CN106522828A - Pressure-adjustable hydraulic thruster - Google Patents
Pressure-adjustable hydraulic thruster Download PDFInfo
- Publication number
- CN106522828A CN106522828A CN201710000513.6A CN201710000513A CN106522828A CN 106522828 A CN106522828 A CN 106522828A CN 201710000513 A CN201710000513 A CN 201710000513A CN 106522828 A CN106522828 A CN 106522828A
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- Prior art keywords
- pressure
- cylinder body
- sai
- mao
- drilling
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- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 10
- 208000031481 Pathologic Constriction Diseases 0.000 claims 1
- 210000001215 vagina Anatomy 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 43
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004577 thatch Substances 0.000 description 2
- 241000167880 Hirundinidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a pressure-adjustable hydraulic thruster, and belongs to the technical field of petroleum drilling tools and machines. The pressure-adjustable hydraulic thruster comprises an upper connector, a core shaft, a middle connector, a first-stage secondary cylinder body, a second-stage secondary cylinder body and a flow plug, wherein a main cylinder body is installed on the core shaft in a sliding mode; one side of the main cylinder body is provided with the first-stage secondary cylinder body and the second-stage secondary cylinder body in a threaded mode through the middle connector; one end of the second-stage secondary cylinder body is connected with the main cylinder body in a threaded mode; an end socket of the first-stage secondary cylinder body is provided with the upper connector in a threaded mode; and the flow plug is arranged on the inner side of the upper connector. By means of the pressure-adjustable hydraulic thruster, the problems that when an existing drilling tool is put down too fast, a liquid cylinder is pressed tightly, and when the drilling tool is put down too slowly, a drill bit is in an idle state, and the drilling efficiency is lowered are solved effectively. The pressure-adjustable hydraulic thruster has the characteristics of being simple in structure and good in practicability. A drilling work operator can guide normal conduction of well drilling by observing the change of the pressure read number of drilling liquid, and the pressure-adjustable hydraulic thruster is particularly suitable for installation and use of drilling wells such as horizontal wells and large-displacement extending wells.
Description
Technical field
The present invention relates to a kind of pressure-adjustable hydrodynamic thrust device, belongs to oil drilling tool field of mechanical technique.
Background technology
In conventional drilling operation, either traditional rotating disk drilling, or downhole motor drilling, all it is by brill
The weight of post applies the pressure of the drill.But, during high angle hole and horizontal well drilling, by hole angle increase, wall friction resistance
The factors such as large and small size drilling tool poor rigidity affect, and dependence drill string weight traditional in conventional drilling has applied the method for the pressure of the drill
Construction needs can not be met well.Subsequently, some downhole tools using flexible hydraulic pressurization, such as 20th century are occurred in that in succession
End, the rich team of Fructus Pruni salicinae of University On The Mountain Of Swallows are designed and have developed the single pass waterpower of one-level and control propeller, and the device is in order to more preferable
Ground vibration damping has loaded onto regulator on its outer tube；And for example at the beginning of 21 century, Southwest Petrol University have developed two grades of a kind of long range
Single pass hydraulic pressurizer, the piston stroke of the device are more much longer than conventional hydraulic thruster, mitigate significantly work people
The amount of labour of member；For another example 20 end of the century, Shengli Oil Field devises the hydraulic thruster of a three-level only one of which stroke, the device
Pushed away plus mechanism by what multiple pistons were constituted, the pressure of the drill for adding can be pushed away than hydraulic thruster before much greater.Above flexibility water
The downhole tool of power pressurization all preferably resolves the pressure of the drill such as horizontal well, extended reach well and is difficult applying problem.Additionally, fluid power
Thruster can also be realized that the pressure of the drill is invariable and uniformly send brill, and improve rate of penetration and protection drilling tool and drill bit, reduction makes a trip
Number of times, can reduce down hole problem and accident to greatest extent, improve work efficiency, mitigate the labor intensity of worker, section
About drilling period etc..Therefore, it is widely used in extended reach well, the drilling well of horizontal well and workover treatment, with good
Development prospect.But, when drilling tool decentralization is too fast, the pressure of mutation will cause hydrodynamic thrust device compacted rapidly, now
Hydrodynamic thrust device will lose the effect of flexible pressurizing, so as to the same with the effect that drill collar pressurizes.In this case, waterpower
Prelum is just easy to damage.And if drilling tool lowering velocity is slow, then drill bit will dally, and cause the wave of drilling efficiency
Take.This is all unfavorable for the normal drilling well work of hydrodynamic thrust device.
The content of the invention
It is an object of the invention to：A kind of the pressure of the drill that effectively can be adjusted when drilling tool transfers too fast or excessively slow is provided；To solve
Certainly existing drilling tool is transferred drill free when letting slip slow under too fast or drilling tool and reduces the pressure-adjustable hydrodynamic thrust of drilling efficiency problem
Device.
The technical scheme is that：
A kind of pressure-adjustable hydrodynamic thrust device, including top connection, mandrel, transition joint, one-level subsidiary cylinder, two grades of subsidiary cylinders and choked flow
Mao Sai, it is characterised in that：Master cylinder body is slidably fitted with mandrel, Master cylinder body side is provided with one-level pair by transition joint screw thread
Cylinder body and two grades of subsidiary cylinders, one end of two grades of subsidiary cylinders are threadedly coupled with Master cylinder body, and the ends screw of one-level subsidiary cylinder is provided with
Top connection, inside top connection are provided with choked flow Mao Sai；Choked flow thatch is equipped with auxiliary piston bar by block ring beyond the Great Wall；Lead on auxiliary piston bar
Cross positive stop lug boss and pressure cap A is equipped with auxiliary piston；Pass through pressure cap B on the mandrel of auxiliary piston bar side and jump ring is equipped with main piston, it is main
Piston is slidably connected with two grades of subsidiary cylinders.
Described auxiliary piston bar is slidably connected with transition joint.
Described auxiliary piston is slidably connected with one-level subsidiary cylinder.
Described choked flow Mao Sai is tubular body, and one end termination of choked flow Mao Sai is provided with fitting flange, the circle of fitting flange
Screw thread is provided with week, liquid opening is evenly equipped with the end face of fitting flange, on the body of choked flow Mao Sai, annular groove is provided with.
Described choked flow Mao Sai is threadedly coupled with one-level subsidiary cylinder by the screw thread on fitting flange.
The pipe diameter at described choked flow Mao Sai annular grooves two ends is corresponding with block ring diameter of bore.
Liquid flow hole is respectively arranged with described one-level subsidiary cylinder and two grades of subsidiary cylinders.
Defining flange is provided with described mandrel, Master cylinder body is connected with defining flange contact.
The beneficial effects of the present invention is：
In the pressure-adjustable hydrodynamic thrust device course of work, block ring can axially move with piston, transfer when drilling tool is run into
Can mutually coincide with the body at choked flow lance plug groove two ends when too fast or excessively slow, the overflow section of drilling fluid is accumulated and can be become suddenly
It is little, pressure drop is thus produced, increases axial thrust.Fluid cylinder and brill are compressed so as to effectively solve when existing drilling tool transfers too fast
When letting slip slow under tool, drill free reduces the problem of drilling efficiency.The pressure-adjustable hydrodynamic thrust device simple structure, practicality are good
Feature, drillng operation operator can instruct being normally carried out for drilling well by the change of the pressure registration of observation drilling fluid；It is special
Not Shi Yongyu the drilling well such as horizontal well, extended reach well install and use.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 be Fig. 1 in A A to cross section structure schematic diagram；
Fig. 3 be Fig. 1 in B B to cross section structure schematic diagram；
Fig. 4 is the structural representation of the choked flow lance plug of the present invention；
End face structure schematic diagrams of the Fig. 5 for Fig. 4.
In figure：1st, top connection, 2, one-level subsidiary cylinder, 3, choked flow Mao Sai, 4, block ring, 5, auxiliary piston, 6, auxiliary piston bar, 7,
Transition joint, 8, pressure cap B, 9, main piston, 10, jump ring, 11, Master cylinder body, 12, mandrel, 13, two grades of subsidiary cylinders, 14, assemble convex
Edge, 15, liquid opening, 16, annular groove, 17, positive stop lug boss, 18, pressure cap A, 19, liquid flow hole, 20, defining flange；21st, hydraulic pressure
Hole.
Specific embodiment
The pressure-adjustable hydrodynamic thrust device, including top connection 1, mandrel 12, transition joint 7, the secondary cylinder of 2, two grades of one-level subsidiary cylinder
Body 13 and choked flow Mao Sai 3.Master cylinder body 11 is slidably fitted with mandrel 12,11 side of Master cylinder body is installed by 7 screw thread of transition joint
There are one-level subsidiary cylinder 2 and two grades of subsidiary cylinders 13, one end of two grades of subsidiary cylinders 13 is threadedly coupled with Master cylinder body 11.
The ends screw of one-level subsidiary cylinder 2 is provided with top connection 1, and choked flow Mao Sai 3 is provided with the inside of top connection 1；Choked flow thatch
4 are filled in for tubular body, one end termination of choked flow Mao Sai 4 is provided with fitting flange 14, and the provided circumferentially about of fitting flange 14 has screw thread,
Liquid opening 15 is evenly equipped with the end face of fitting flange 14, annular groove 16 on the body of choked flow Mao Sai, is provided with；Choked flow Mao Sai 4
It is threadedly coupled with one-level subsidiary cylinder 2 by the screw thread on fitting flange 14.
Block ring 4 is set with choked flow Mao Sai 3, screw thread is provided with auxiliary piston bar 6 on block ring 4；Auxiliary piston bar 6 and centre
It is to be slidably connected between joint 7.The pipe diameter at 3 annular grooves of choked flow Mao Sai, 16 two ends is corresponding with the diameter of bore of block ring 4.
That is block ring 4 slidably to the body at 16 two ends of annular groove, so as to form sealing.
Pass through positive stop lug boss 17 on auxiliary piston bar 6 and pressure cap A18 is equipped with auxiliary piston 5；Auxiliary piston 5 and one-level subsidiary cylinder 2 it
Between to be slidably connected.Pass through pressure cap B8 and jump ring 10 on the mandrel 12 of 16 side of auxiliary piston bar and main piston 9 be housed, main piston 9 with
Two grades of subsidiary cylinders 13 are slidably connected.
Liquid flow hole 19 is respectively arranged with the one-level subsidiary cylinder 2 and two grades of subsidiary cylinders 13 of the pressure-adjustable hydrodynamic thrust device.Core
Defining flange 20 is provided with axle 11, one end and the defining flange of Master cylinder body 11 connect 20 and touch and be connected.
The block ring 4 of the pressure-adjustable hydrodynamic thrust device, can be with auxiliary piston by being threadably mounted on the inwall of auxiliary piston bar 6
Bar 6 is axially moved together；Coupled by rectangular spline between mandrel 12 and Master cylinder body 11, axial phase can be done between the two
To motion.
When the pressure-adjustable hydrodynamic thrust device works, top connection 1 is that NC50 joints are used to connect tubing string；Mandrel 12 is used to connect
Drill bit；In the course of work；Run into drilling tool decentralization it is too fast when, it is a part of Jing choked flows Mao Sai 3 of drilling fluid that entered by top connection 1, secondary
Piston rod 6, the central through hole of mandrel 12 are acted on drill bit, wherein there is part to enter by the hydraulic pressure hole 21 on auxiliary piston bar 6
To the toroidal cavity between auxiliary piston bar 6 and two grades of subsidiary cylinders 13, and act on main piston 9, so as to realize broken rock moment of torsion
Transmission.
Another part drill-in fluid is entered between one-level subsidiary cylinder 2 and choked flow Mao Sai 3 by the liquid opening 15 of choked flow Mao Sai 3
Toroidal cavity in, and act on auxiliary piston 5, so as to promoting auxiliary piston 5 and driving auxiliary piston bar 6 to move downward；This mistake
Cheng Zhong, when block ring 4 departs from the sealing state of 16 left end body of annular groove and runs to 16 sections of annular groove, acts on
Drill-in fluid on auxiliary piston 5 is flowed out by the gap between block ring 4 and annular groove 16, and leads to interior drill-in fluid remittance with center
Collection, realizes the purpose to drill bit pressurization.
When block ring 4 is run to the body of 16 right-hand member of annular groove, i.e. the body of block ring 4 and 16 right-hand member of annular groove
When mutually coinciding, the overflow section product of drilling fluid can diminish suddenly, so as to produce pressure drop, make pressure of the drilling fluid to auxiliary piston 5
Increase and act on drill bit, thus improve the efficiency of drillng operation.
Run in the course of work when letting slip slow under drilling tool, borehole pressure is entered in the thruster by liquid flow hole 19, while
Under drill string effect, 12 versus primary subsidiary cylinder 2 of auxiliary piston bar 6 and mandrel, transition joint 7, two grades of subsidiary cylinders 13 and master cylinders are made
Body 11 is moved, when block ring 4 is run to the body of 16 left end of annular groove, i.e. the pipe of block ring 4 and 16 left end of annular groove
When body mutually coincides, the overflow section product of drilling fluid can diminish again suddenly, and operator can pass through the change of observation registration again
It is secondary to suppress, so as to effectively can solve the problems, such as drilling tool decentralization it is too fast or slow when drill free reduce drilling efficiency.
The pressure-adjustable hydrodynamic thrust device simple structure, the characteristics of practicality is good, drillng operation operator can be by observation
The change of the pressure registration of drilling fluid is instructing being normally carried out for drilling well；It is particularly well-suited to the brill such as horizontal well, extended reach well
Well is installed and used.
Claims (8)
1. a kind of pressure-adjustable hydrodynamic thrust device, including top connection（1）, mandrel（12）, transition joint（7）, one-level subsidiary cylinder（2）、
Two grades of subsidiary cylinders（13）With choked flow Mao Sai（3）, it is characterised in that：Mandrel（12）On be slidably fitted with Master cylinder body（11）, Master cylinder body
（11）Side passes through transition joint（7）Screw thread is provided with one-level subsidiary cylinder（2）With two grades of subsidiary cylinders（13）, two grades of subsidiary cylinders（13）
One end and Master cylinder body（11）Threaded connection, one-level subsidiary cylinder（2）Ends screw top connection is installed（1）, top connection（1）It is interior
Side is provided with choked flow Mao Sai（3）；Choked flow Mao Sai（3）It is upper to pass through block ring（4）Equipped with auxiliary piston bar（6）；Auxiliary piston bar（6）It is upper logical
Cross positive stop lug boss（17）With pressure cap A（18）Equipped with auxiliary piston（5）；Auxiliary piston bar（6）The mandrel of side（12）It is upper to pass through pressure cap B
（8）And jump ring（10）Equipped with main piston（9）, main piston（9）With two grades of subsidiary cylinders（13）It is slidably connected.
2. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described auxiliary piston bar（6）With
Transition joint（7）It is slidably connected.
3. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described auxiliary piston（5）With one
Level subsidiary cylinder（2）It is slidably connected.
4. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described choked flow Mao Sai（3）For
Tubular body, choked flow Mao Sai（3）One end termination be provided with fitting flange（14）, fitting flange（14）Provided circumferentially about have spiral shell
Stricture of vagina, fitting flange（14）End face on be evenly equipped with liquid opening（15）, choked flow Mao Sai（3）Body on be provided with annular groove
（16）.
5. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1 or 4, it is characterised in that：Described choked flow Mao Sai（3）
By fitting flange（14）On screw thread and one-level subsidiary cylinder（2）Threaded connection.
6. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described choked flow Mao Sai（3）Ring
Connected in star（16）The pipe diameter and block ring at two ends（4）Diameter of bore correspondence.
7. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described one-level subsidiary cylinder（2）
With two grades of subsidiary cylinders（13）On be respectively arranged with liquid flow hole（19）.
8. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described mandrel（12）Upper setting
Limited location flange（20）, Master cylinder body（11）With defining flange（20）Contact connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000513.6A CN106522828A (en) | 2017-01-03 | 2017-01-03 | Pressure-adjustable hydraulic thruster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000513.6A CN106522828A (en) | 2017-01-03 | 2017-01-03 | Pressure-adjustable hydraulic thruster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106522828A true CN106522828A (en) | 2017-03-22 |
Family
ID=58336823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000513.6A Pending CN106522828A (en) | 2017-01-03 | 2017-01-03 | Pressure-adjustable hydraulic thruster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522828A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021516C (en) * | 1991-11-19 | 1993-07-07 | 石油勘探开发研究院机械研究所 | Underground hydraulic pressure propeller |
| WO2007056732A2 (en) * | 2005-11-07 | 2007-05-18 | Mohawk Energy Ltd. | Method and apparatus for downhole tubular expansion |
| CN204920843U (en) * | 2015-09-21 | 2015-12-30 | 长江大学 | Oil and gas drilling pushes away feeder apparatus with multistage hydraulic |
| CN105937373A (en) * | 2016-05-26 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Dead point location indicating type damping thruster |
| CN206299339U (en) * | 2017-01-03 | 2017-07-04 | 长江大学 | A kind of pressure-adjustable hydrodynamic thrust device |
-
2017
- 2017-01-03 CN CN201710000513.6A patent/CN106522828A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021516C (en) * | 1991-11-19 | 1993-07-07 | 石油勘探开发研究院机械研究所 | Underground hydraulic pressure propeller |
| WO2007056732A2 (en) * | 2005-11-07 | 2007-05-18 | Mohawk Energy Ltd. | Method and apparatus for downhole tubular expansion |
| CN204920843U (en) * | 2015-09-21 | 2015-12-30 | 长江大学 | Oil and gas drilling pushes away feeder apparatus with multistage hydraulic |
| CN105937373A (en) * | 2016-05-26 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Dead point location indicating type damping thruster |
| CN206299339U (en) * | 2017-01-03 | 2017-07-04 | 长江大学 | A kind of pressure-adjustable hydrodynamic thrust device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |