CN114382414B - Down-the-hole static penetration probe - Google Patents
Down-the-hole static penetration probe Download PDFInfo
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- CN114382414B CN114382414B CN202111508975.1A CN202111508975A CN114382414B CN 114382414 B CN114382414 B CN 114382414B CN 202111508975 A CN202111508975 A CN 202111508975A CN 114382414 B CN114382414 B CN 114382414B
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- drill bit
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- 239000000523 sample Substances 0.000 title claims abstract description 108
- 230000003068 static effect Effects 0.000 title claims abstract description 100
- 230000035515 penetration Effects 0.000 title claims abstract description 80
- 238000005553 drilling Methods 0.000 claims abstract description 139
- 239000002002 slurry Substances 0.000 claims description 55
- 238000001514 detection method Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 48
- 238000013461 design Methods 0.000 abstract description 5
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 141
- 239000010720 hydraulic oil Substances 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 10
- 238000004891 communication Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
- E21B7/124—Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/013—Devices specially adapted for supporting measuring instruments on drill bits
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Remote Sensing (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of offshore exploration, in particular to a down-the-hole static cone penetration tester which comprises a drilling tool outer tube, an openable or closable drill bit, a probe driving piece and a drilling tool driving piece, wherein the inner portion of the drilling tool outer tube is communicated up and down along the axial direction, the probe is arranged at the lower end of the drilling tool outer tube and positioned above the drill bit, the probe driving piece is arranged inside the drilling tool outer tube and drives the probe to move up and down, the drill bit is opened and penetrates through the drill bit when the probe moves down to contact the drill bit, and the drill bit is closed when the probe moves up to leave the drill bit, and the drilling tool driving piece drives the drilling tool outer tube to rotate. The static cone penetration tester and the drilling tool for drilling are combined into a whole, after a single-pass static cone penetration test is completed in the lower hole, the drilling can be directly carried out through the drill bit, the next-pass static cone penetration test is carried out in situ after the drilling is completed, and the circulation is repeated until the design hole depth of the static cone penetration test is reached, so that a large amount of auxiliary time for taking the drilling tool and the static cone penetration tester off can be saved, and the operation efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of offshore exploration, in particular to a down-the-hole static cone penetration tester while drilling.
Background
At present, the static sounding test for the in-situ test of offshore exploration comprises two modes of seabed static sounding and downhole static sounding.
The seabed static sounding is lowered to the seabed through a sea exploration platform or a lifting device on a sea exploration ship, balance sounding counter force is provided through self weight, and a double-wheel or oil cylinder drives a sounding rod to penetrate a probe into a stratum, so that a static sounding test is realized. The seabed static sounding does not need drilling equipment such as a drilling machine, and the like, the double-wheel type static sounding can be continuously penetrated, is simple and convenient to operate, has high operation efficiency, is suitable for single stratum, is only suitable for relatively homogeneous stratum, cannot penetrate through a hard layer when the stratum is soft and hard mutually layers, cannot test the stratum below the hard layer, is easy to break when the probe meets the hard layer, and in addition, a signal cable passes through an axle center hole of each touch sounding rod, so that the touch sounding rod is inconvenient to assemble and disassemble.
The downhole static sounding is that a static sounding device is put down into a drill hole through a drilling machine by using a drill rod (a sleeve), the dead weight of a sea base plate provides balanced sounding counter force, a probe is driven by an oil cylinder to penetrate into a stratum to complete a first single-pass static sounding test, the single-pass penetrating length is about 3 meters, then the static sounding device is put out of the hole, a drilling tool is put into the hole to drill a clear hole of the stratum subjected to the double-pass static sounding test, the drilling length is 2.5 meters, then the drilling tool is put out, and a second single-pass static sounding test is carried out in the lower hole of the static sounding device. And (3) repeating the steps circularly until the designed hole depth is reached, and completing the in-situ static force detection test of the hole. The underground static sounding is applicable to a stratum widely, is not influenced by the hardness of the stratum, can finish the static sounding test with larger hole depth, but each single-cycle static sounding test needs to take up and down the static sounding device and take up and down the drilling tool once respectively, the auxiliary time of the static sounding device and the drilling tool is greatly longer than the time required by the test, and the efficiency is low.
Disclosure of Invention
The invention aims to provide a down-the-hole static cone penetration tester capable of realizing static cone penetration and drilling so as to overcome the defects in the prior art.
The down-the-hole static cone penetration tester comprises a drilling tool outer tube, an openable or closable drill bit, a probe driving piece and a drilling tool driving piece, wherein the interior of the drilling tool outer tube is communicated up and down along the axial direction, the openable or closable drill bit is arranged at the lower end of the drilling tool outer tube, the probe is arranged in the drilling tool outer tube and is positioned above the drill bit, the probe driving piece is arranged in the drilling tool outer tube and drives the probe to move up and down, the probe enables the drill bit to be opened and pass through the drill bit when being in contact with the drill bit in a downward movement, and the drill bit is closed when the probe moves up and away from the drill bit, and the drilling tool driving piece drives the drilling tool outer tube to rotate.
The umbilical cable probe comprises a base pipe, a splitter, a reversing valve, a probe driving piece and a probe driving piece, wherein the base pipe is internally and vertically penetrated along the axial direction, the splitter is arranged in the base pipe, a first oil duct and a second oil duct which are mutually independent are formed in the splitter, the reversing valve is arranged in the base pipe and is provided with an input port for connecting a hydraulic pipe in the umbilical cable, a first interface for connecting the first oil duct and a second interface for connecting the second oil duct, the probe driving piece is a hydraulic cylinder, the hydraulic cylinder comprises a rodless cavity, a rod cavity and a piston rod, the upper end of the piston rod is positioned in the rod cavity, the lower end of the piston rod is connected with a probe, and the rodless cavity and the rod cavity are respectively communicated with the first oil duct and the second oil duct.
Preferably, the diverter comprises a hollow shell and a mandrel which is sleeved in the shell in a circumferential rotation manner, the drilling tool driving piece is arranged in the base pipe and is connected with the upper end of the mandrel, and the lower end of the mandrel is connected with the upper end of the drilling tool outer pipe.
Preferably, the drilling tool driving element is a hydraulic motor, and the reversing valve is further provided with a third interface and a fourth interface which are respectively connected with an oil inlet and an oil outlet of the hydraulic motor.
Preferably, a first oil port connected with the first interface and a second oil port connected with the second interface are formed in the shell, the first oil duct and the second oil duct are both arranged in the mandrel, the upper end of the first oil duct and the upper end of the second oil duct are respectively communicated with the first oil port and the second oil port, and the lower end of the first oil duct and the lower end of the second oil duct are respectively communicated with the rodless cavity and the rod cavity through the lower end face of the mandrel.
Preferably, the upper end of the outer pipe of the drilling tool is provided with a drilling tool joint for sealing the upper end of the outer pipe of the drilling tool, and the lower end of the mandrel penetrates through the drilling tool joint and is fixedly connected with the drilling tool joint.
Preferably, the reversing valve, the drilling tool driving piece and the shell are all provided with a spacing space with the base pipe, the shell is provided with a slurry inlet, a slurry channel is arranged in the mandrel, the upper end of the slurry channel is communicated with the slurry inlet, the lower end of the slurry channel penetrates through the lower end face of the mandrel, and the probe driving piece, the probe and the drill bit are all provided with spacing spaces with the drilling tool outer pipe.
Preferably, the inside detecting part that is used for detecting the displacement of piston rod that is equipped with of drilling tool outer tube, detecting part connection detection signal cable, the sliding ring is installed to the lower extreme of dabber, the sliding ring include respectively with dabber along circumference sliding fit and fixed complex stiff end and rotatory end, detection signal cable connection rotatory end, the signal cable in the umbilical cable is connected to the stiff end.
Preferably, the lower end of the base pipe is provided with a lower joint for sealing the lower end of the base pipe, the mandrel can be penetrated in the lower joint in a circumferential rotation manner, the slip ring is positioned between the lower end of the shell and the lower joint, and a cable channel for a detection signal cable to penetrate is arranged in the mandrel.
Preferably, the upper end of the base pipe is provided with an upper joint for sealing the upper end of the base pipe, and the upper joint is provided with a jack for passing through the umbilical cable.
Compared with the prior art, the invention has obvious progress:
The down-the-hole static cone penetration tester combines the static cone penetration tester with the drilling tool, after a single-round static cone penetration test is completed in a lower hole, the static cone penetration tester and the lower drilling tool are not required to be put forward, the stratum of the round static cone penetration test can be directly drilled through a drill bit, the next round static cone penetration test is carried out in situ after the drilling is completed, and the repeated circulation is carried out until the design hole depth of the static cone penetration test is reached, the defect that the static cone penetration tester and the drilling tool need to be repeatedly put out and put down from the hole in the existing down-hole static cone penetration test is overcome, a large amount of auxiliary time for lifting and putting down the drilling tool and lifting up and putting down the static cone penetration tester can be saved, and the operation efficiency is greatly improved.
Drawings
FIG. 1 is a schematic partial cross-sectional view of a downhole static cone while drilling according to an embodiment of the invention.
Fig. 2 is an enlarged schematic view of the portion a in fig. 1.
Fig. 3 is an enlarged schematic view of the portion b in fig. 1.
Fig. 4 is an enlarged schematic view of the portion c in fig. 1.
Fig. 5 is a schematic cross-sectional view at A-A in fig. 3.
Fig. 6 is a schematic cross-sectional view at B-B in fig. 3.
Fig. 7 is a schematic cross-sectional view at C-C in fig. 3.
Fig. 8 is a schematic cross-sectional view at D-D in fig. 3.
Fig. 9 is a schematic cross-sectional view at E-E in fig. 3.
Fig. 10 is a schematic cross-sectional view at F-F in fig. 4.
FIG. 11 is a schematic illustration of the use of a downhole static cone while drilling probe according to an embodiment of the present invention.
Wherein reference numerals are as follows:
100. first oil pipe joint of down-the-hole while-drilling static cone penetration tester 11
1. Second tubing of outer tube 12 of drilling tool
2. Second oil pipe joint of drill bit 13
201. Wing 14 third oil pipe
3. Fourth oil pipe of probe 15
4. Probe driving piece 16 drilling tool joint
41. Piston rod 17 detection signal cable
42. Flange seat 18 slip ring
43. Bolt 181 fixing end
44. Flange 182 rotary end
45. Lower joint of communication hole 19
5. Base sleeve of drilling tool driving piece 20
6. Base pipe 21 screw
7. First sealing ring of diverter 22
701. First oil duct 23 second seal ring
702. Second oil duct 24 third sealing ring
703. Slurry channel 25 fourth sealing ring
704. Cable channel 26 connector
71. Air-filled joint of outer casing 27
711. First oil port 28 upper joint
712. Second oil port 29 cable
713. Pulp inlet 01 controller
72. Mandrel 02 base plate
720. Mandrel end cap 03 sleeve chuck
721. First annular groove 04 sleeve
722. Second annular groove 05 seabed foundation bed
723. Third annular groove 06 drill rod
73. Bearing 07 wave compensation drilling machine power head
8. Reversing valve 08 drill pipe chuck
81. Input port 09 umbilical cable winch
82. First interface 010 hydraulic power system control cabinet
83. Second interface 011 wave compensation drilling machine winch
84. Third interface 012 mud pump
85. Fourth interface 013 mud pit
9. Umbilical 014 exploration ship
10. First oil pipe 015 borehole wall
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1-11, one embodiment of a downhole static cone while drilling device of the present invention.
Referring to fig. 1 to 4, the down-the-hole static cone penetration tester 100 of the present embodiment includes a tool outer tube 1, a drill bit 2, a probe 3, a probe driver 4, and a tool driver 5. Inner edge of outer tube 1 of drilling tool is penetrated up and down in the axial direction. The drill bit 2 is an openable or closable drill bit, the drill bit 2 is arranged at the lower end of the outer tube 1 of the drilling tool, and the drill bit 2 is fixedly connected with the lower end of the outer tube 1 of the drilling tool through threaded fit. The probe 3 is arranged inside the outer tube 1 of the drill and above the drill bit 2. The probe driving part 4 is arranged inside the outer tube 1 of the drilling tool and drives the probe 3 to move up and down. The downward movement of the probe 3 contacts the drill bit 2 causing the drill bit 2 to open and pass through the drill bit 2 and the upward movement of the probe 3 away from the drill bit 2 causes the drill bit 2 to close. The drilling tool driving piece 5 drives the drilling tool outer tube 1 to rotate, and the drilling tool outer tube 1 drives the drill bit 2 to synchronously rotate along with the drilling tool outer tube.
When the static penetration test device is used, the probe 3 is driven to move downwards through the probe driving part 4, so that the probe 3 can prop up the drill bit 2 and penetrate through the drill bit 2, the probe 3 can be penetrated into a stratum to realize the static penetration test, after one static penetration test is finished, the probe 3 is driven to move upwards through the probe driving part 4, the probe 3 is retracted into the outer pipe 1 of the drilling tool and leaves the drill bit 2, the drill bit 2 can be restored to be closed, the outer pipe 1 of the drilling tool is driven by the drilling tool driving part 5 to drive the drill bit 2 to rotate, meanwhile, the down-the-hole static penetration tester 100 is integrally lowered, the drill bit 2 can be rotated downwards, the drilling tool driving part 5 stops driving the outer pipe 1 of the drilling tool and the drill bit 2 to rotate after one drilling is finished, the probe driving part 4 drives the probe 3 to move downwards again to carry out the next static penetration test, and the circulation is repeated until the design hole depth of the static penetration test is reached.
Therefore, the down-the-hole static cone penetration tester 100 of the embodiment combines the static cone penetration tester and the drilling tool into one, after a single-round static cone penetration test is completed in a lower hole, the static cone penetration tester and the lower drilling tool do not need to be put forward, the stratum of the round static cone penetration test can be directly drilled through the drill bit 2, the next round static cone penetration test is carried out in situ after the drilling is completed, and the repeated circulation is carried out until the design hole depth of the static cone penetration test is reached, the defect that the static cone penetration tester and the drilling tool need to be repeatedly put out and put down from the hole in the existing down-hole static cone penetration test is overcome, a large amount of auxiliary time for lifting, lowering the drilling tool and lifting and lowering the static cone penetration tester can be saved, and the operation efficiency is greatly improved.
In this embodiment, referring to fig. 4, the drill bit 2 may include two fins 201 that can be opened or closed relatively, the upper ends of the two fins 201 are hinged to the bit body of the drill bit 2, the lower ends of the two fins 201 are arranged relatively, and the lower ends of the two fins 201 are kept in a butt-closed state by the elastic force of an elastic structure (such as a spring), so as to form a full-section drilling drill bit. When the probe 3 moves downwards to contact the drill bit 2, the lower ends of the two fins 201 can be pushed against the elasticity of the elastic structure to butt against the closed ends, so that the drill bit 2 is opened and passes through the drill bit 2 from between the two fins 201, and when the probe 3 moves upwards to leave the drill bit 2, the lower ends of the two fins 201 automatically recover and keep the butt against closed state under the action of the elasticity of the elastic structure.
Referring to fig. 1-4, the downhole static cone penetration assembly 100 of the present embodiment preferably further comprises a base pipe 6, a diverter 7, and a diverter valve 8. The inside of the base pipe 6 is penetrated up and down in the axial direction. The flow divider 7 is provided inside the base pipe 6, and a first oil passage 701 and a second oil passage 702 which are independent of each other are formed inside the flow divider 7. The reversing valve 8 is provided inside the base pipe 6, the reversing valve 8 has an input port 81 for connecting a hydraulic pipe in the umbilical 9, a first port 82 for connecting the first oil passage 701, and a second port 83 for connecting the second oil passage 702, the reversing valve 8 further has an oil return port (not shown in the figure) connected to the hydraulic pipe in the umbilical 9, the input port 81 can be communicated with the first port 82 and the oil return port can be communicated with the second port 83 by reversing the reversing valve 8, or the input port 81 can be communicated with the second port 83 and the oil return port can be communicated with the first port 82, so that hydraulic oil supplied from the hydraulic pipe in the umbilical 9 can be supplied to the first oil passage 701 or the second oil passage 702. The reversing valve 8 may preferably be a solenoid reversing valve. The probe driving piece 4 is a hydraulic cylinder, the hydraulic cylinder comprises a rodless cavity, a rod cavity and a piston rod 41, the upper end of the piston rod 41 is positioned in the rod cavity, and the lower end of the piston rod 41 is connected with the probe 3. In this embodiment, the probe 3 and the hydraulic cylinder are preferably both coaxially disposed inside the outer tube 1 of the drill and the hydraulic cylinder is located above the probe 3, and the rodless cavity of the hydraulic cylinder is located above the rod cavity. The outer peripheral surface of the hydraulic cylinder can be provided with a flange 44, the inner wall of the outer pipe 1 of the drilling tool can be provided with a flange seat 42, the flange 44 is fixedly connected with the flange seat 42 through bolts 43, so that the hydraulic cylinder is fixedly arranged on the inner wall of the outer pipe 1 of the drilling tool, and when the outer pipe 1 of the drilling tool is driven to rotate by the drilling tool driving piece 5, the hydraulic cylinder and the probe 3 synchronously rotate along with the outer pipe. The rodless cavity and the rod cavity of the hydraulic cylinder are respectively communicated with the first oil duct 701 and the second oil duct 702, when oil comes in the first oil duct 701, hydraulic oil enters the rodless cavity of the hydraulic cylinder, the piston rod 41 is pushed to move downwards, so that the probe 3 is driven to move downwards, at the moment, the hydraulic oil in the rod cavity of the hydraulic cylinder returns to a hydraulic pipe in the umbilical 9 through the second oil duct 702, the second interface 83 and the oil return port of the reversing valve 8, and when oil comes in the second oil duct 702, the hydraulic oil enters the rod cavity of the hydraulic cylinder, the piston rod 41 is pushed to move upwards, so that the probe 3 is driven to move upwards, and at the moment, the hydraulic oil in the rodless cavity of the hydraulic cylinder returns to the hydraulic pipe in the umbilical 9 through the first interface 82 and the oil return port of the reversing valve 8 of the first oil duct 701. In this embodiment, referring to fig. 4, the rodless cavity of the hydraulic cylinder is communicated with the first oil duct 701 through the first oil duct 10, the first oil duct 10 and the first oil duct 701 can be connected through the first oil duct joint 11, the rod cavity of the hydraulic cylinder is communicated with the second oil duct 702 through the second oil duct 12, and the second oil duct 12 and the second oil duct 702 can be connected through the second oil duct joint 13. A space is formed between the hydraulic cylinder and the outer pipe 1 of the drilling tool, and a first oil pipe joint 11, a first oil pipe 10, a second oil pipe joint 13 and a second oil pipe 12 are arranged in the space between the hydraulic cylinder and the outer pipe 1 of the drilling tool.
Referring to fig. 3, the flow divider 7 preferably includes a housing 71 having a hollow interior and a spindle 72 rotatably fitted in the housing 71 in the circumferential direction, the spindle 72 being rotatably supported on the inner wall of the housing 71 preferably by a bearing 73. The drill driving member 5 is disposed inside the base pipe 6 and connected to the upper end of the mandrel 72, and the lower end of the mandrel 72 is connected to the upper end of the drill outer pipe 1. The mandrel 72 is driven by the drill driving member 5 to rotate relative to the housing 71, and the drill outer tube 1 is driven by the mandrel 72 to synchronously rotate. Thus, the housing 71 of the base tube 6 and the diverter 7 does not rotate when the drill drive 5 drives the drill outer tube 1 and the drill bit 2 for rotary drilling.
Preferably, referring to fig. 2 and 3, in this embodiment, the drill driving member 5 is a hydraulic motor, the reversing valve 8 further has a third interface 84 and a fourth interface 85 respectively connected to an oil inlet and an oil outlet of the hydraulic motor, the reversing valve 8 can be used for reversing to enable the input port 81 of the reversing valve 8 to be communicated with the third interface 84 and the oil return port of the reversing valve 8 to be communicated with the fourth interface 85, hydraulic oil is delivered to the hydraulic motor through the input port 81 and the third interface 84, so that the mandrel 72 is driven by the hydraulic motor to rotate the drill outer tube 1, and oil return of the hydraulic motor returns to the hydraulic tube in the umbilical 9 through the fourth interface 85 and the oil return port.
In this embodiment, referring to fig. 2 and 3, the drill driver 5 and the diverter 7 are coaxially disposed within the base pipe 6, and the drill driver 5 is located above the diverter 7. The reversing valve 8 is arranged inside the base pipe 6 and above the drill driving member 5, and the reversing valve 8 is fixedly supported on the inner wall of the base pipe 6.
In this embodiment, referring to fig. 3, a base sleeve 20 is disposed in the base tube 6, the base sleeve 20 is fixedly connected with the inner wall of the base tube 6 by screw-fit, and the inside of the base sleeve 20 is penetrated up and down along the axial direction. The upper end of the shell 71 of the shunt 7 is sleeved outside the lower end of the base sleeve 20, a mandrel end cap 720 is sleeved outside the upper end of the mandrel 72 of the shunt 7, the mandrel end cap 720 is fixedly connected with the upper end of the mandrel 72 through threaded fit, a gap is reserved between the mandrel end cap 720 and the base sleeve 20, a bearing 73 is arranged at the upper end of the mandrel 72 and below the mandrel end cap 720, the lower end of the drilling tool driving member 5 is sleeved inside the upper end of the base sleeve 20, the output shaft of the drilling tool driving member 5 is fixedly connected with the upper end of the mandrel 72, and the output shaft of the drilling tool driving member 5 can be connected with the upper end of the mandrel 72 through keys. The housing 71, the base sleeve 20 and the drill driver 5 are fixed in connection by means of screws 21, whereby the mounting of the drill driver 5 and the flow divider 7 in the base tube 6 is achieved.
Preferably, referring to fig. 2 and 3, in the present embodiment, a first oil port 711 and a second oil port 712 are formed on the housing 71 of the flow divider 7. The first port 711 is connected to the first port 82 of the reversing valve 8, and the first port 82 of the reversing valve 8 may communicate with the first port 711 on the housing 71 through the third oil pipe 14. The second port 712 is connected to the second port 83 of the reversing valve 8, and the second port 83 of the reversing valve 8 may be connected to the second port 712 on the housing 71 through the fourth oil pipe 15. Referring to fig. 5, 6 and 7, in the present embodiment, the casing 71 of the drill driver 5 and the diverter 7 has a space between the base pipe 6, the base sleeve 20 and the base pipe 6 also have a space between them, and the third oil pipe 14 and the fourth oil pipe 15 are disposed in the space between the drill driver 5, the base sleeve 20 and the casing 71 and the base pipe 6. To adapt the contour of the housing 71 and the base pipe 6, the third oil pipe 14 and the fourth oil pipe 15 are preferably elliptical pipes. The first oil passage 701 and the second oil passage 702 are both disposed in the mandrel 72, and the first oil passage 701 and the second oil passage 702 extend in the axial direction of the mandrel 72, and the upper ends of the first oil passage 701 and the second oil passage 702 are respectively communicated with a first oil port 711 and a second oil port 712 on the casing 71, so as to respectively connect the first port 82 and the second port 83 of the reversing valve 8. Referring to fig. 3 and 6, a first annular groove 721 extending in the circumferential direction of the mandrel 72 is provided on the outer peripheral surface of the mandrel 72 at the upper end of the first oil passage 701, the upper end of the first oil passage 701 communicates with the first annular groove 721, and a first oil port 711 on the housing 71 is located on the outer peripheral side of the first annular groove 721 and communicates with the first annular groove 721 so as to communicate with the upper end of the first oil passage 701. Referring to fig. 3 and 7, a second annular groove 722 extending in the circumferential direction of the spool 72 is provided on the outer peripheral surface of the spool 72 at the upper end of the second oil passage 702, the upper end of the second oil passage 702 communicates with the second annular groove 722, and a second oil port 712 on the housing 71 is located on the outer peripheral side of the second annular groove 722 and communicates with the second annular groove 722 so as to communicate with the upper end of the second oil passage 702. Thus, when the spindle 72 rotates relative to the housing 71, the first port 711 of the housing 71 is in communication with the upper end of the first oil passage 701 through the first annular groove 721, and the second port 712 is in communication with the upper end of the second oil passage 702 through the second annular groove 722. The lower end of the first oil passage 701 and the lower end of the second oil passage 702 both penetrate the lower end face of the mandrel 72 and communicate with the rodless cavity and the rod cavity of the probe driving member 4 (hydraulic cylinder), respectively. Referring to fig. 4, the lower end of the first oil passage 701 may be communicated to the rodless cavity of the probe driving member 4 through the first oil pipe joint 11 and the first oil pipe 10, and the lower end of the second oil passage 702 may be communicated to the rod cavity of the probe driving member 4 through the second oil pipe joint 13 and the second oil pipe 12.
In this embodiment, referring to fig. 3, the upper end of the outer tube 1 of the drilling tool is provided with a drilling tool joint 16 for closing the upper end of the outer tube 1 of the drilling tool, and the drilling tool joint 16 and the upper end of the outer tube 1 of the drilling tool can be fixedly connected through screw thread fit. The lower end of the mandrel 72 penetrates through the drill collar 16 and is fixedly connected with the drill collar 16, and the lower end of the mandrel 72 and the drill collar 16 can be fixedly connected through threaded fit. The mandrel 72 rotates to drive the drill joint 16 to rotate along with the mandrel, and the drill joint 16 drives the drill outer tube 1 to synchronously rotate. The lower end of the mandrel 72 penetrates the tool joint 16 so that the lower end of the first oil passage 701 and the lower end of the second oil passage 702, which penetrate the lower end face of the mandrel 72, are respectively communicated to the rodless chamber and the rod-containing chamber of the probe driver 4 (hydraulic cylinder).
Referring to fig. 2 and 3, in the present embodiment, the reversing valve 8, the drill driver 5 and the casing 71 of the diverter 7 have a space between them and the base pipe 6, the base sleeve 20 and the base pipe 6 also have a space between them, and the reversing valve 8, the drill driver 5, the base sleeve 20 and the space between the casing 71 and the base pipe 6 are mutually communicated to form a passage through which mud can pass. Referring to fig. 4, the probe driver 4, the probe 3 and the drill bit 2 each have a space therebetween with the drill outer tube 1, and the probe driver 4, the probe 3 and the drill bit 2 communicate with the space therebetween with the drill outer tube 1. Referring to fig. 4 and 10, in this embodiment, a flange 44 on the probe driving member 4 and a flange seat 42 on the inner wall of the outer tube 1 of the drilling tool are provided with a communication hole 45, and the communication hole 45 communicates the space between the probe driving member 4 and the outer tube 1 of the drilling tool and the space between the probe 3 and the outer tube 1 of the drilling tool to form a channel through which mud can pass. Referring to fig. 3 and 8, a slurry inlet 713 is formed in the casing 71, a slurry channel 703 is formed in the mandrel 72, the slurry channel 703 extends along the axial direction of the mandrel 72, and the slurry channel 703, the first oil channel 701 and the second oil channel 702 are independent from each other, and the slurry channel 703 is a slurry channel. The upper end of the slurry channel 703 communicates with a slurry inlet 713 on the housing 71 and thus with the reversing valve 8, the drill drive 5 and the space between the housing 71 and the base pipe 6. A third annular groove 723 extending in the circumferential direction of the spindle 72 is provided on the outer peripheral surface of the spindle 72 at the upper end of the pulp passage 703, the upper end of the pulp passage 703 communicates with the third annular groove 723, and a pulp inlet 713 on the housing 71 is located on the outer peripheral side of the third annular groove 723 and communicates with the third annular groove 723 so as to communicate with the upper end of the pulp passage 703. Thus, when spindle 72 rotates relative to housing 71, slurry inlet 713 on housing 71 is in communication with the upper end of slurry channel 703. The lower end of the slurry channel 703 penetrates through the lower end face of the mandrel 72, and the lower end of the mandrel 72 penetrates through the drill joint 16, so that the lower end of the slurry channel 703 is communicated with a spacing space between the probe driving piece 4 in the drill outer tube 1 and the drill outer tube 1, a channel in the base tube 6 through which slurry can pass is communicated with a channel in the drill outer tube 1 through which slurry can pass by the slurry channel 703, the slurry in the slurry pool can enter the drill outer tube 1 from the base tube 6 through the slurry channel 703 and reach the drill bit 2, when the drill bit 2 rotates and drills, the slurry reaching the drill bit 2 can carry away earth scraps and rock scraps formed by the drill bit 2 rotating and drilling in the stratum from the bottom of the drill bit 2, and returns upwards to the slurry pool through the periphery of the drill outer tube 1, so as to complete a hole bottom clearance hole, and the slurry can form protection to the hole wall when passing through the hole wall of a naked hole along the path, so that the hole wall is prevented from collapsing.
Referring to fig. 3, in this embodiment, preferably, in order to ensure the tightness of the diverter 7, a first sealing ring 22 is disposed between the lower end of the drill driver 5 and the upper end of the base sleeve 20, between the upper end of the housing 71 and the lower end of the base sleeve 20, and between the lower end of the housing 71 and the mandrel 72, so that the sealing fit is achieved between the lower end of the drill driver 5 and the upper end of the base sleeve 20, between the upper end of the housing 71 and the lower end of the base sleeve 20, and between the lower end of the housing 71 and the mandrel 72. Second sealing rings 23 are respectively arranged between the shell 71 and the mandrel 72 on the upper and lower sides of the first oil port 711 and the first annular groove 721, on the upper and lower sides of the second oil port 712 and the second annular groove 722, and on the upper and lower sides of the slurry inlet 713 and the third annular groove 723, so as to ensure the tightness of the first oil duct 701, the second oil duct 702 and the slurry duct 703 in the flow divider 7.
Referring to fig. 3 and 4, in this embodiment, preferably, a detecting member (not shown in the drawings) is disposed inside the outer tube 1 of the drilling tool, the detecting member is used for detecting displacement of the piston rod 41 of the probe driving member 4, the detecting member is connected with the detection signal cable 17, the sliding ring 18 is mounted at the lower end of the mandrel 72 of the shunt 7, the sliding ring 18 includes a fixed end 181 and a rotating end 182 rotatable relative to the fixed end 181, signal connection is performed between the fixed end 181 and the rotating end 182 of the sliding ring 18, the fixed end 181 of the sliding ring 18 is slidably matched with the mandrel 72 in the circumferential direction, and the rotating end 182 of the sliding ring 18 is fixedly matched with the mandrel 72 in the circumferential direction. The detection signal cable 17 is connected to the rotating end 182 of the slip ring 18, the fixed end 181 of the slip ring 18 is connected to the signal cable in the umbilical 9, and the fixed end 181 of the slip ring 18 may be connected to the signal cable in the umbilical 9 through the cable 29. When the mandrel 72 rotates relative to the casing 71 of the shunt 7, the fixed end 181 of the slip ring 18 is fixed without moving along with the rotation of the mandrel 72, the cable 29 and the umbilical cable 9 connected with the fixed end 181 of the slip ring 18 also do not rotate along with the mandrel 72, the rotating end 182 of the slip ring 18 rotates synchronously along with the mandrel 72, the detection signal cable 17 connected with the rotating end 182 of the slip ring 18 rotates along with the mandrel, so that the drilling tool driving member 5 drives the mandrel 72 to drive the drilling tool outer tube 1 to rotate along with the probe driving member 4 and the probe 3, and when the probe driving member 4 and the probe 3 rotate synchronously along with the mandrel, the detection member and the detection signal cable 17 connected with the detection member can also rotate synchronously along with the mandrel, and detection signals of the detection member can be transmitted to the signal cable in the umbilical cable 9 through the detection signal cable 17, the slip ring 18 and the cable 29, so that the umbilical cable 9 can be transmitted to the controller, and real-time display, recording and storage of detection signals of the detection member can be realized. When the probe 3 is driven to move downwards by the piston rod 41 of the probe driving member 4 and the probe 3 is penetrated into the stratum for static penetration test, the penetration amount of the probe 3 can be measured by detecting the displacement of the piston rod 41 of the probe driving member 4 by the detecting member. Preferably, the detecting member may employ a laser range finder, which may be installed at the bottom of the probe driving member 4 (hydraulic cylinder).
In this embodiment, the probe 3 may also be connected to a probe signal cable, which may be polymerized with the detection signal cable 17 after passing through the piston rod 41 and the rodless cavity of the probe driving member 4 (hydraulic cylinder), and commonly connected to the rotating end 182 of the slip ring 18.
In this embodiment, referring to fig. 3 and 9, the lower end of the base pipe 6 is provided with a lower joint 19 closing the lower end of the base pipe 6, and the lower joint 19 and the lower end of the base pipe 6 can be fixedly connected by screw-fit. The mandrel 72 is rotatably arranged on the lower joint 19 along the circumferential direction, the mandrel 72 penetrates through the drill joint 16 after penetrating through the lower joint 19 and is fixedly connected with the drill joint 16, and the lower joint 19 is positioned above the drill joint 16 and has a spacing distance from the drill joint 16. The slip ring 18 is arranged inside the outer tube 1 of the drilling tool and between the lower end of the housing 71 of the shunt 7 and the lower joint 19, and a cable channel 704 through which the detection signal cable 17 passes is arranged in the mandrel 72. When the spindle 72 rotates relative to the housing 71, the rotation end 182 of the detection signal cable 17 and the slip ring 18 passing through the cable passage 704 rotates synchronously with the spindle 72, and the lower joint 19 and the base pipe 6 are fixed. In this embodiment, the detection signal cable 17 and the probe signal cable connected to the bottom of the probe 3 are all connected to the rotating end 182 of the slip ring 18 in common through the cable passage 704, and the detection signal cable 17 and the probe signal cable are in sealing engagement with the side wall of the cable passage 704.
In this embodiment, referring to fig. 3, the inner wall of the base pipe 6 is provided with a connecting member 26 penetrating up and down in the axial direction at a position corresponding to the lower end of the housing 71 of the flow divider 7, the connecting member 26 is welded to the inner wall of the base pipe 6, and the lower end of the housing 71 is sleeved inside the connecting member 26. A third sealing ring 24 is arranged between the lower end of the housing 71 and the connecting piece 26, and a fourth sealing ring 25 is arranged between the mandrel 72 and the lower joint 19, so that a sealing annular cavity is formed among the mandrel 72, the base pipe 6, the connecting piece 26 and the lower joint 19, the slip ring 18 is arranged in the sealing annular cavity, a cable 29 connected with the fixed end 181 of the slip ring 18 passes through the connecting piece 26 to be connected to a signal cable in the umbilical 9, and the cable 29 is in sealing fit with the connecting piece 26. The upper end of the first oil passage 701, the upper end of the second oil passage 702 and the upper end of the slurry passage 703 are all located above the connecting member 26, that is, the first oil port 711, the second oil port 712 and the slurry inlet 713 on the housing 71 are all located above the connecting member 26, so that the slurry in the slurry tank can enter the slurry passage 703 after entering the base pipe 6, but not enter the sealed annular cavity where the slip ring 18 is located.
Referring to fig. 3, preferably, the lower connector 19 may be provided with an inflation connector 27, after the assembly and debugging of the down-the-hole static cone penetration tester 100 in this embodiment are completed, the inflation connector 27 may be used to inflate the sealed annular cavity where the slip ring 18 is located, so as to perform a pressure-proof test, and after the test is completed, the inflation connector 27 needs to be replaced by a plug, so that the sealed annular cavity where the slip ring 18 is located can be used after the plug is sealed.
In this embodiment, referring to fig. 2, the upper end of the base pipe 6 is provided with an upper joint 28 closing the upper end of the base pipe 6, and the upper joint 28 and the upper end of the base pipe 6 can be fixedly connected by screw-fit. The inside of the upper joint 28 is penetrated up and down in the axial direction so as to communicate with the inside of the base pipe 6, and is used for feeding mud into the inside of the base pipe 6. The upper joint 28 is provided with a jack through which the umbilical cable 9 passes, the reversing valve 8 is positioned below the upper joint 28, after the umbilical cable 9 passes through the jack on the upper joint 28, a hydraulic pipe in the umbilical cable 9 is connected to an input port 81 of the reversing valve 8, a signal cable connection cable 29 in the umbilical cable 9, and the cable 29 passes through the reversing valve 8, the drilling tool driving member 5, the base sleeve 20, and a space between the housing 71 and the base pipe 6, and is connected to a fixed end 181 of the slip ring 18 through the connecting member 26.
Referring to fig. 11, the use of the downhole static cone penetration tool 100 of the present embodiment sequentially includes the following steps.
Step one, assembling and debugging the down-the-hole static cone penetration tester 100, namely assembling all parts of the down-the-hole static cone penetration tester 100, after the assembly is completed, enabling one end of an umbilical cable 9 to pass through an insertion hole on an upper joint 28, connecting a hydraulic pipe in the umbilical cable 9 to an input port 81 and an oil return port of a reversing valve 8, connecting a signal cable in the umbilical cable 9 to a cable 29, connecting the other end of the umbilical cable 9 to a hydraulic power system control cabinet 010 and a controller 01 through an umbilical cable winch 09, wherein the hydraulic pipe in the umbilical cable 9 is connected to the hydraulic power system control cabinet 010, the hydraulic power system control cabinet 010 is composed of a hydraulic oil tank, a hydraulic oil pump, a reversing valve and the like, providing hydraulic power for the down-the-hole static cone penetration tester 100 through the umbilical cable 9, connecting the signal cable in the umbilical cable 9 to the controller 01, and connecting the reversing valve 8 of the down-the hole static cone penetration tester 100 to the controller 01. Wherein both the controller 10 and the hydraulic power system control cabinet 010 can employ the prior art controller and hydraulic station. Then, the rotary drilling of the drill bit 2, the penetration of the probe 3, the signal transmission and other actions are operated and debugged until the design requirements are met.
And step two, a waterproof pressure-resistant test, namely after the down-the-hole static cone penetration tester 100 is assembled and debugged, inflating the sealed annular cavity where the slip ring 18 is positioned through the inflation connector 27, performing the pressure-resistant test, and maintaining the inflation pressure for 8 hours under the inflation pressure of 0.7-1.5 MPa, wherein if no pressure is released, the test is completed. After the test is completed, the inflation connector 27 is replaced by a plug, the sealing annular cavity where the slip ring 18 is located is sealed, and the rear part is available.
Step three, on-site installation, namely installing and fixing a sleeve 04 on a base plate 02 through a sleeve chuck 03 on the base plate 02, lowering the sleeve 04 onto a seabed foundation bed 05 along with the base plate 02, placing a down-the-hole static cone penetration tester 100 into the sleeve 04, connecting an upper joint 28 of the down-the-hole static cone penetration tester 100 with a drill rod 06, lowering the down-the-hole static cone penetration tester 100 with the down-the-hole and an umbilical 9 into a preset position in a hole by means of the drill rod 06, connecting a wave compensation drilling machine power head 07 at the upper end of the drill rod 06, connecting the wave compensation drilling machine power head 07 with a wave compensation drilling machine winch 011, and installing the drill rod chuck 08 at the orifice end at the upper end of the sleeve 04. In addition, the input port of the slurry pump 012 is connected to the slurry tank 013, the output port of the slurry pump 012 is connected to the water joint on the wave compensation drilling machine power head 07, the inside of the drill pipe 06 is vertically penetrated along the axial direction, the water joint on the wave compensation drilling machine power head 07 is connected to the inside of the upper joint 28 of the down-the-hole static cone penetration tester 100 through the inside of the drill pipe 06, and the upper end of the sleeve pipe 04 is provided with an opening communicated with the slurry tank 013. The mud pump 012 is in signal connection with the controller 01. The mud pit 013, the mud pump 012, the wave compensation drill winch 011, the umbilical winch 09, the hydraulic power system control cabinet 010 and the controller 01 are all arranged on the exploration vessel 014.
Step four, The static sounding test comprises the steps of operating a sleeve chuck 03 and a drill rod chuck 08 to clamp a sleeve 04 and a drill rod 06 respectively, fixing the sleeve 04 and the drill rod 06 to provide supporting counter force for penetration of a probe 3 of a down-the-hole static sounding device 100 while drilling, pressing a start button on a hydraulic power system control cabinet 010, starting the hydraulic power system control cabinet 010 to work, conveying hydraulic oil to an input port 81 of a reversing valve 8 through an umbilical cable winch 09 and an umbilical cable 9, and controlling the reversing valve 8 to communicate the input port 81 of the reversing valve 8 with a first interface 82 and communicate an oil return port with a second interface 83 by the controller 01, wherein the hydraulic oil sequentially passes through the first interface 82, The third oil pipe 14, the first oil port 711, the first annular groove 721, the first oil passage 701, the first oil pipe joint 11 and the first oil pipe 10 enter a rodless cavity of the probe driving piece 4 (hydraulic cylinder), the piston rod 41 is pushed to move downwards, so that the probe 3 is driven to move downwards, at this time, hydraulic oil in the rod cavity of the probe driving piece 4 (hydraulic cylinder) returns to a hydraulic pipe in the umbilical cable 9 through the second oil pipe 12, the second oil pipe joint 13, the second oil passage 702, the second annular groove 722, the second oil port 712, the fourth oil pipe 15, the second interface 83 and an oil return port of the reversing valve 8 in sequence, and the probe 3 moves downwards to push up two opposite-joint-closed fins 201 of the drill bit 2, penetrates the drill bit 2 from between the two fins 201 and penetrates into a stratum, and performs a first-time static sounding test. The reaction force of the probe 3 when moving down into the formation is transmitted up through the drill pipe 06 to the drill pipe chuck 08, through the drill pipe chuck 08 to the casing 04, through the casing 04 to the casing chuck 03, through the casing chuck 03 to the base plate 02. During penetration of the probe 3 into the formation, the measurement signals of the probe 3 are transmitted to the slip ring 18 through the probe signal cable and the displacement signals of the piston rod 41 of the probe driving member 4 detected by the detecting member (laser range finder) through the detecting signal cable 17, and are transmitted to the controller 01 through the slip ring 18 and the signal cable 29 and the umbilical cable 9, and the controller 01 receives the signals and displays, records and stores the received signals in real time. After the static cone penetration test of the first time is completed, the controller 01 controls the reversing valve 8 to reverse, the input port 81 of the reversing valve 8 is communicated with the second interface 83, and the oil return port is communicated with the first interface 82, so that hydraulic oil sequentially passes through the second interface 83, the fourth oil pipe 15, the second oil port 712, the second annular groove 722, the second oil duct 702, the second oil pipe joint 13 and the second oil pipe 12 to enter a rod cavity of the probe driving member 4 (hydraulic cylinder), the piston rod 41 is pushed to move upwards, and the probe 3 is driven to move upwards, and at the moment, the hydraulic oil in a rodless cavity of the probe driving member 4 (hydraulic cylinder) sequentially passes through the first oil pipe 10, The first oil pipe joint 11, the first oil duct 701, the first annular groove 721, the first oil port 711, the third oil pipe 14, the first interface 82 and the oil return port of the reversing valve 8 return to the hydraulic pipe in the umbilical 9, and when the probe 3 moves upwards to leave the drill bit 2, the lower ends of the two fins 201 of the drill bit 2 automatically recover and keep the butt-joint closed state under the elastic force of the elastic structure, and the full-section drilling drill bit is recovered. So far, the static cone penetration test of the first round is finished. Then, according to the drilling depth and the length requirement of the drill rod 06, a drill rod 06 is added below the power head 07 of the wave compensation drilling machine, the drill rod chuck 08 is operated to loosen the drill rod 06, so that the drill rod 06 can move up and down freely, and the drilling preparation is performed for the down-the-hole static cone penetration tester 100 while drilling.
And fifthly, drilling and cleaning holes, namely controlling the reversing valve 8 to reverse by the controller 01, communicating an input port 81 of the reversing valve 8 with a third interface 84, communicating an oil return port of the reversing valve 8 with a fourth interface 85, enabling hydraulic oil to enter a drilling tool driving member 5 (hydraulic motor) through the third interface 84, enabling oil return in the driving member 5 (hydraulic motor) to return to a hydraulic pipe in an umbilical cable 9 through the third interface 84 and the oil return port, enabling the drilling tool driving member 5 to rotate and transmitting torque to a drill bit 2 through a mandrel 72 of a shunt 7, a drilling tool joint 16 and a drilling tool outer pipe 1 in sequence, enabling the drill bit 2 to rotate, enabling the rotating drill bit 2 to rotate at a uniform speed under the dead weight of a down-hole static penetration detector 100, a drill pipe 06 and the wave compensation drilling tool power head 07, and enabling the drilling depth of a stratum through which is penetrated by a probe 3 in a first static penetration test to be smaller than the penetration test depth of the static penetration test by 0.5 m. In the process of downwards and uniformly revolving drilling the drill bit 2, the controller 01 controls the slurry pump 012 to start, the slurry pump 012 sucks slurry from the slurry tank 013 and outputs the slurry with a certain pressure, the slurry sequentially passes through the water joint on the wave compensation drilling machine power head 07, the inside of the drill rod 06 and the inside of the upper joint 28, enters the inside of the base pipe 6, sequentially passes through the reversing valve 8, the drilling tool driving piece 5, the base sleeve 20 and the interval space between the shell 71 and the base pipe 6, enters the slurry inlet 713 on the shell 71 and the slurry channel 703 in the mandrel 72, enters the inside of the drilling tool outer pipe 1 through the slurry channel 703, sequentially passes through the interval space between the probe driving piece 4 and the drilling tool outer pipe 1, the communication hole 45 on the flange 44 on the probe driving piece 4 and the flange seat 42 on the inner wall of the drilling tool outer pipe 1, the interval space between the probe 3 and the drill bit 2 and the drilling tool outer pipe 1, the bottom of the drill bit 2 is reached, the mud carries away earth and rock scraps formed by rotary drilling of the drill bit 2 in the stratum from the bottom of the drill bit 2, and the earth and rock scraps sequentially pass through a gap between the outer peripheral side of the down-the-hole static cone penetration tester 100 and a borehole wall 015, a gap between the outer peripheral side of a drill rod 06 and the borehole wall 015, a gap between the outer peripheral side of the drill rod 06 and a sleeve 04 and an opening communicated with a mud pit 013 at the upper end of the sleeve 04, and return to the mud pit 013 upwards, so that hole bottom cleaning is completed, and as the mud continuously enters the hole bottom from the mud pit 013 and returns to the mud pit 013 upwards, the hole wall can be protected when the mud passes through the borehole wall 015 along the way, and the hole wall is prevented from collapsing. After the first drilling and hole cleaning is completed, the controller 01 controls the slurry pump 012 to be turned off, and the slurry pump 012 stops delivering slurry.
And step six, repeating the step four and the step five until the depth of the designed hole of the static cone penetration test is reached.
In summary, the down-the-hole static cone penetration tester 100 of the present embodiment has the following advantages:
(1) The static cone penetration test efficiency can be greatly improved.
(2) Can adapt to soft and hard interbedded strata.
(3) The static penetration test can be frequently performed by shortening the drilling clear Kong Hui cm-10 cm/time when the static penetration tester for the hard stratum cannot penetrate, namely shortening the drilling set depth of single time, and avoiding missing the stratum capable of performing the static penetration test due to overlarge drilling clear hole penetration.
(4) Can be suitable for static cone penetration test with larger hole depth.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (7)
1. A downhole static penetration tester while drilling, comprising:
the inner part of the outer pipe (1) of the drilling tool is communicated up and down along the axial direction;
an openable or closable drill bit (2) arranged at the lower end of the outer tube (1) of the drilling tool;
the probe (3) is arranged in the outer pipe (1) of the drilling tool and is positioned above the drill bit (2);
a probe driving part (4) which is arranged in the outer pipe (1) of the drilling tool and drives the probe (3) to move up and down, the probe (3) opens the drill bit (2) and passes through the drill bit (2) when being moved down to contact with the drill bit (2), the drill bit (2) is closed when the probe (3) is moved up to leave the drill bit (2), and
A drill driving member (5) for driving the drill outer tube (1) to rotate;
A base pipe (6) which penetrates up and down in the axial direction;
the diverter (7) is arranged inside the base pipe (6), and a first oil duct (701) and a second oil duct (702) which are mutually independent are formed inside the diverter (7);
A reversing valve (8) arranged inside the base pipe (6), wherein the reversing valve (8) is provided with an input port (81) for connecting a hydraulic pipe in an umbilical (9), a first interface (82) for connecting the first oil duct (701) and a second interface (83) for connecting the second oil duct (702);
The probe driving piece (4) is a hydraulic cylinder, the hydraulic cylinder comprises a rodless cavity, a rod cavity and a piston rod (41), the upper end of the piston rod is positioned in the rod cavity, the lower end of the piston rod is connected with the probe (3), and the rodless cavity and the rod cavity are respectively communicated with the first oil duct (701) and the second oil duct (702);
The diverter (7) comprises a hollow shell (71) and a mandrel (72) which is sleeved in the shell (71) in a circumferential rotating manner, the drilling tool driving piece (5) is arranged in the base pipe (6) and is connected with the upper end of the mandrel (72), and the lower end of the mandrel (72) is connected with the upper end of the drilling tool outer pipe (1);
The shell (71) is provided with a first oil port (711) connected with the first interface (82) and a second oil port (712) connected with the second interface (83), the first oil duct (701) and the second oil duct (702) are all arranged in the mandrel (72), the upper end of the first oil duct (701) and the upper end of the second oil duct (702) are respectively communicated with the first oil port (711) and the second oil port (712), and the lower end of the first oil duct (701) and the lower end of the second oil duct (702) are respectively communicated with the lower end face of the mandrel (72) and are respectively communicated with the rodless cavity and the rod-shaped cavity.
2. The downhole static cone penetration tool according to claim 1, wherein the drill drive (5) is a hydraulic motor, the reversing valve (8) further having a third interface (84) and a fourth interface (85) connecting an oil inlet and an oil outlet of the hydraulic motor, respectively.
3. The down-the-hole static cone penetration tester as claimed in claim 1, wherein the upper end of the outer drill pipe (1) is provided with a drill joint (16) for sealing the upper end of the outer drill pipe (1), and the lower end of the mandrel (72) penetrates through the drill joint (16) and is fixedly connected with the drill joint (16).
4. A downhole static penetration tester according to claim 3, wherein the reversing valve (8), the drill driving member (5) and the casing (71) are provided with a spacing space between the base pipe (6), the casing (71) is provided with a slurry inlet (713), the mandrel (72) is internally provided with a slurry channel (703), the upper end of the slurry channel (703) is communicated with the slurry inlet (713), the lower end of the slurry channel (703) penetrates through the lower end face of the mandrel (72), and the probe driving member (4), the probe (3) and the drill bit (2) are provided with a spacing space between the drill outer pipe (1).
5. The down-the-hole static cone penetration tester as claimed in claim 1, wherein a detection member for detecting the displacement of the piston rod (41) is arranged inside the outer pipe (1) of the drilling tool, the detection member is connected with a detection signal cable (17), a slip ring (18) is arranged at the lower end of the mandrel (72), the slip ring (18) comprises a fixed end (181) and a rotating end (182) which are respectively in sliding fit and fixed fit with the mandrel (72) along the circumferential direction, the detection signal cable (17) is connected with the rotating end (182), and the fixed end (181) is connected with a signal cable in the umbilical cable (9).
6. The down-the-hole static cone penetration tester as claimed in claim 5, wherein a lower joint (19) closing the lower end of the base pipe (6) is provided at the lower end of the base pipe (6), the mandrel (72) is rotatably inserted into the lower joint (19) along the circumferential direction, the slip ring (18) is located between the lower end of the housing (71) and the lower joint (19), and a cable channel (704) through which the detection signal cable (17) passes is provided in the mandrel (72).
7. The down-the-hole static cone penetration tester as claimed in claim 1, wherein an upper joint (28) for closing the upper end of the base pipe (6) is arranged at the upper end of the base pipe (6), and a jack for the umbilical cable (9) to pass through is arranged on the upper joint (28).
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| CN114382414B true CN114382414B (en) | 2025-02-18 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912221A (en) * | 2014-04-22 | 2014-07-09 | 铁道第三勘察设计院集团有限公司 | Casing pipe drill bit and application thereof to rock fixed-depth static sounding |
| CN113431492A (en) * | 2021-08-10 | 2021-09-24 | 江西科技学院 | Drilling device for geotechnical engineering investigation and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60207520T2 (en) * | 2002-01-29 | 2006-08-10 | Ingenjörsfirman Geotech AB | Probing device with microwave transmission |
| CN1766276B (en) * | 2005-10-10 | 2010-11-03 | 吉林大学 | DTH hammer double-tube drilling equipment and drilling method thereof |
| JP5410867B2 (en) * | 2009-03-27 | 2014-02-05 | 大王製紙株式会社 | Household thin paper storage container |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912221A (en) * | 2014-04-22 | 2014-07-09 | 铁道第三勘察设计院集团有限公司 | Casing pipe drill bit and application thereof to rock fixed-depth static sounding |
| CN113431492A (en) * | 2021-08-10 | 2021-09-24 | 江西科技学院 | Drilling device for geotechnical engineering investigation and using method |
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