CN115324524A - Graded cementing device - Google Patents
Graded cementing device Download PDFInfo
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- CN115324524A CN115324524A CN202210844905.1A CN202210844905A CN115324524A CN 115324524 A CN115324524 A CN 115324524A CN 202210844905 A CN202210844905 A CN 202210844905A CN 115324524 A CN115324524 A CN 115324524A
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- sliding sleeve
- matched
- detachable
- cementing device
- piece
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- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 241000283984 Rodentia Species 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 3
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 28
- 238000003801 milling Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 19
- 239000002002 slurry Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 graded cementing device, which relates to the technical field of well cementation equipment and comprises a cementing device body, wherein the top and bottom ends of the cementing device body are respectively connected with an upper joint and a lower joint, the lower part of the cementing device body is provided with an external pipe packer matched with a well wall, an internal clearance plugging mechanism matched with the cementing device body is arranged inside the cementing device body, a detachable sleeve is provided with a plugging piece matched with a lock and a sliding sleeve assembly, and a propelling piece matched with the plugging piece is arranged right above the plugging piece. Through the unique structural design, the invention does not need to adopt the operation of drilling and removing accessories, thereby effectively solving the problems of large drilling and milling workload and drilling and milling time, further reducing the prolonging of the well completion period, simultaneously effectively avoiding the problems of drilling deviation and drilling leakage of the stage cementing injector, further facilitating the later oil extraction operation and simultaneously facilitating the running of the subsequent construction pipe column.
Description
Technical Field
The invention relates to the field of well cementation equipment, in particular to a staged cementing device.
Background
In the whole drilling engineering of oil and gas wells, well cementation is important operation in the drilling process, the core idea is to put a casing string with a certain size into the well, inject cement slurry around the casing string, fix the casing on the well wall and avoid corrosion of the casing, in other words, well cementation cement needs to be injected into the shaft, and then put a cement plug into the well to extrude the well cementation cement in the shaft into a space between the open hole well wall and the oil pipe. Some special occasions need to adopt a staged cementing process to meet the requirements of field well cementation construction, such as wells with excessive cement injection amount at one time, wells with stratum incapable of bearing excessive liquid column pressure, wells with complex positions needing to be sealed, wells with cementing sections with large temperature difference from top to bottom, and the like, and particularly in the vertical wells, directional wells and horizontal wells for implementing upper well cementation and lower screen pipe well completion operations, including the prior oil field which mainly popularizes and uses the cementing process at the top of the screen pipe of the horizontal well, the staged cementing process also needs to be adopted. Need adopt the stage cementing ware among the stage cementing technology, the inside annex that realizes suppressing pressure and stage cementing that is equipped with of stage cementing ware, present commonly used bores stopper type stage cementing ware, after the cementing, need bore the annex and remove just can realize the pit shaft and link up, has following problem in the use:
the drilling and plugging time is long, the opening sliding sleeve and the closing sliding sleeve of the common hydraulic opening and hydraulic closing stage cementing device are both made of cast aluminum, the inner diameter is smaller, the tool length is large, and meanwhile, the rubber plug seat or the blind plate are both processed by cast aluminum, so that the problems of large drilling and milling workload and long drilling and milling time are caused, the well completion period is prolonged, in addition, the problems of drilling deviation, drilling leakage of the stage cementing device and the like exist, and the later-stage oil extraction operation is greatly influenced; the inner drift diameter is small after drilling and milling, for a 7in casing, drilling and milling construction is usually carried out by adopting a drill bit with the diameter of 152mm, and the drift diameter formed after drilling and plugging is small, so that the running of a subsequent construction pipe column is not facilitated;
in the pressure building process, the opening sliding sleeve and the closing sliding sleeve slide under the action of pressure and collide with the pipe body, so that large vibration is caused, the service life and the sealing property of the pipe body are influenced, and the sliding sleeve is easy to be damaged and closed during plug sweeping; when the drill is pulled out after the plug is swept, the sliding sleeve can be opened and closed, and the defects can cause the sealing failure of the whole tubular column and cause the quality accident of well cementation; poor locking performance between the stage cementing device and the pipe string, and influence on the connection stability of the pipe string
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the stage cementing device which is reasonable in design, safe and reliable.
The technical scheme adopted by the invention for solving the technical problem is as follows: a graded cementing device comprises a cementing device body, wherein an upper joint and a lower joint are respectively connected to the top end and the bottom end of the cementing device body, an external pipe packer matched with a well wall is arranged on the lower portion of the cementing device body, an internal clearance plugging mechanism matched with the cementing device body is arranged inside the cementing device body, a body circulation hole is formed in the cementing device body, an external fixing component is arranged on the upper portion of the cementing device body, and the external fixing component is located right above the circulation hole; the cementing device body comprises a detachable sleeve, a groove matched with the internal clearance plugging mechanism is formed in the inner wall of the detachable sleeve, the internal clearance plugging mechanism comprises an upper sliding sleeve assembly matched with the external fixing assembly, a sliding sleeve circulating hole matched with the body circulating hole is formed in the upper sliding sleeve assembly, the upper sliding sleeve assembly is connected with a lock and a sliding sleeve assembly matched with the plugging piece, and the bottom end of the lock and the sliding sleeve assembly is connected with a lower sliding sleeve assembly matched with the external pipe packer; the detachable sleeve is provided with a plugging piece matched with the lock and the sliding sleeve assembly, and a pushing piece matched with the plugging piece is arranged right above the plugging piece.
In view of the existing resource conditions, especially the oil field resource storage, generally speaking, oil field wells are deeper and deeper, and for a well cementing structure, generally speaking, a staged cementing device is adopted to pour cement slurry to the outer side of the whole pipeline, and when cement is poured in stages, because the poured cement generates a large amount of pressure, great requirements are provided for a high-performance liner hanger on the ground, especially in a shaft well stage, the weight of the laid pipeline is ensured, the pressure of the cement slurry during pouring is also required to be considered, and gravity generated by the cement slurry due to universal gravitation, so that high requirements are often provided for the liner hanger in the well cementing equipment, and in addition, during the staged pouring, a drilling and milling device is generally used for drilling the whole rubber plug and a plug seat matched with the rubber plug, the rubber plug can generate chips, a certain scratch is caused to the inner wall of the pipeline, the service life of the liner is influenced, a certain vibration can be generated to the cement ring outside the casing, the stable setting of the external fixing component is specially arranged, so that the external fixing component is specially arranged in the well wall, the well is not beneficial to improving the stability of the whole pipeline in the well wall and the stability of the well wall, and the well cementing structure, and is not beneficial to the improvement of the whole casing in the well wall, and the improvement of the well wall, and the stability of the well wall can be improved in the well cementing structure.
Furthermore, the external fixing component comprises a fixed round block arranged on the upper portion of the detachable sleeve, a round groove is uniformly formed in the fixed round block along the circumferential direction of the detachable sleeve, telescopic steel rod pieces are respectively arranged in the round groove, a trigger piece matched with the telescopic steel rod pieces is arranged on the detachable sleeve, and a trigger part matched with the upper sliding sleeve component is arranged on the trigger piece.
Furthermore, the external fixing component comprises a fixed round block arranged on the upper portion of the detachable sleeve, a round groove is uniformly formed in the fixed round block along the circumferential direction of the detachable sleeve, telescopic steel rod pieces are respectively arranged in the round groove, a trigger piece matched with the telescopic steel rod pieces is arranged on the detachable sleeve, and a trigger part matched with the upper sliding sleeve component is arranged on the trigger piece.
Furthermore, go up the sliding sleeve subassembly include with detachable sleeve pipe sliding fit's closing cover, closing the cover seted up with body circulation hole complex sliding sleeve circulation hole, the top of closing the cover be provided with external fixation subassembly complex conflict portion, the bottom department of closing the cover be provided with the connecting portion that lock and sliding sleeve subassembly are connected.
Further, the lower sliding sleeve assembly comprises a movable sleeve in sliding fit with the detachable sleeve, an installation part connected with the lock and the sliding sleeve assembly is arranged at the top end of the movable sleeve, a reset part is arranged at the bottom end of the movable sleeve, and a signal transmitting part matched with the external pipe packer is arranged at the bottom end of the movable sleeve.
Furthermore, the lock and sliding sleeve assembly comprises an outer tube, a first annular plate is arranged at the top end of the outer tube, first round teeth are arranged at the bottom end of the first annular plate, an inner tube is arranged in the outer tube, a second annular plate opposite to the first annular plate is arranged at the bottom end of the inner tube, second round teeth opposite to the first round teeth are arranged on the second annular plate, a plurality of rotating gears are uniformly arranged on the inner wall of the outer tube along the circumferential direction of the outer tube, and the rotating gears are respectively matched with the first round teeth and the second round teeth;
the inner tube is followed the circumference direction of inner tube evenly sets up a plurality of flexible grooves, be provided with flexible piece in the flexible groove, flexible piece flexible direction with the radial direction of inner tube is unanimous, the inner tube begins to have the annular, be provided with in the annular with flexible piece one-by-one transmission complex drive gear group, drive gear group with the cooperation of rotating gear rodent.
Further, the last coaxial rotation bevel gear that is provided with of rotating gear, drive gear group include with rotation bevel gear tooth complex drive gear, drive gear's axis with the axis parallel arrangement of inner tube, just drive gear sets up on the second crown plate of inner tube, drive gear is coaxial to be provided with the worm, worm tooth complex drive gear, bottom on the flexible piece be provided with drive gear tooth cooperation drive rack.
Further, bevel gear shaft meshing cooperation has the scroll bar, the coaxial drive gear that is provided with of scroll bar, the tail end of flexible piece be provided with drive gear rodent complex drive rack.
Further, the shutoff piece is including fixed skeleton, the bottom of fixed skeleton be provided with lock and sliding sleeve subassembly complex butt joint portion, be provided with rubber portion on the top of fixed skeleton, rubber portion with detachable sleeve pipe internal diameter clearance fit, just be provided with the negative pressure recess on the top surface of rubber portion.
Through the unique structural design, the invention does not need to adopt the operation of drilling and removing accessories, thereby effectively solving the problems of large drilling and milling workload and drilling and milling time, further reducing the prolonging of the well completion period, simultaneously effectively avoiding the problems of drilling deviation and drilling leakage of the stage cementing injector, further facilitating the later oil extraction operation and simultaneously facilitating the running of the subsequent construction pipe column.
According to the invention, through the unique matching of the external fixing component, the internal clearance plugging mechanism and the external pipe packer, the whole conveying pipeline can be effectively stabilized on the oil well wall, the annular space between the conveying pipeline and the oil well wall is plugged through the external pipe packer, the conveying pipeline is plugged through the internal clearance plugging mechanism, and meanwhile, the whole conveying pipeline is stably fixed through the whole external fixing component, so that the connection relation among the conveying pipeline, the external cement ring of the casing and the oil well wall can be enhanced, and the stability of the whole well wall is further improved.
According to the invention, through the unique external fixing component, before the outer annular space of the casing is poured, the connection between the conveying pipeline and the wall of the oil well can be effectively strengthened, so that the requirement on a suspension structure of a wellhead device is reduced, and meanwhile, in the pouring process of the outer annular space of the casing, the connection among the pipeline, the outer cement ring of the casing and the wall of the oil well can be effectively strengthened, so that the stability of the whole conveying pipeline is improved.
The invention realizes the expansion of the expansion block in the expansion groove by the unique internal clearance plugging mechanism in cooperation with the pushing piece and the plugging piece, particularly realizes the removal of the opening plug seat by the structure of the unique lock and the sliding sleeve component, further realizes the operation without drilling and removing accessories, further ensures the uniform inner diameter of the conveying pipeline and is convenient for the subsequent construction to pay attention to the running.
Drawings
FIG. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;
FIG. 2 is an overall elevational view of the present invention;
FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of the present invention;
FIG. 4 is a schematic three-dimensional structure of the removal sleeve of the present invention;
FIG. 5 is a front view of the removal sleeve of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line B-B of the present invention;
FIG. 7 is a schematic cross-sectional view taken at A of the present invention;
FIG. 8 is a schematic cross-sectional view of the present invention at B;
FIG. 9 is a schematic view of the closure, pusher, lock and sliding sleeve assembly of the present invention;
FIG. 10 is a schematic top view of an explosive structure of a closure, pusher, lock and sliding sleeve assembly of the present invention;
FIG. 11 is a schematic elevational view of an explosive structure of the closure, pusher, lock and sleeve assembly of the present invention;
figure 12 is a front three-dimensional block diagram of an explosive structure of the lock and sliding sleeve assembly of the present invention;
FIG. 13 is a schematic cross-sectional view taken at C of the present invention;
FIG. 14 is a bottom three-dimensional block diagram of the explosive structure of the lock and slide sleeve assembly of the present invention;
wherein the figures are identified as: 1. a cementing device body; 11. a body circulation hole; 2. an external pipe packer; 3. an external fixation assembly; 4. an upper sliding sleeve assembly; 41. a sliding sleeve circulation hole; 42. closing the sleeve; 43. a collision part; 44. a connecting portion; 5. a lock and sliding sleeve assembly; 51. an outer tube; 511. a first ring plate; 512. a first circular tooth; 52. an inner tube; 521. a second ring plate; 522. a second circular tooth; 523. a telescopic groove; 53. a rotating gear; 54. a telescopic block; 55. rotating the bevel gear; 6. a lower sliding sleeve assembly; 61. moving the sleeve; 62. an installation part; 63. a reset member; 64. a signal transmitting section; 7. a blocking member; 71. fixing the framework; 72. a rubber part; 721. a negative pressure groove; 8. a pusher member; 81. propelling the support cylinder; 82. a rubber block; 9. a drive gear set; 91. a transmission gear; 92. a worm; 93. a drive gear; 94. the rack is driven.
Detailed Description
Referring to fig. 1 to 14, a staged cementing device comprises a cementing device body 1, wherein an upper joint and a lower joint are respectively connected to two ends of the top and bottom of the cementing device body 1, an external pipe packer 2 matched with a well wall is arranged at the lower part of the cementing device body, an internal gap plugging mechanism matched with the cementing device body is arranged inside the cementing device body 1, a body circulation hole 11 is formed in the cementing device body 1, an external fixing component 3 is arranged at the upper part of the cementing device body 1, and the external fixing component 3 is located right above the body circulation hole 11; the cementing device body 1 comprises a detachable sleeve, the inner wall of the detachable sleeve is provided with a groove matched with the internal clearance plugging mechanism, the internal clearance plugging mechanism comprises an upper sliding sleeve component 4 matched with the external fixing component, the upper sliding sleeve component 4 is provided with a sliding sleeve circulating hole 41 matched with the body circulating hole 11, the upper sliding sleeve component 4 is connected with a lock and a sliding sleeve component 5 matched with a plugging piece, and the bottom end of the lock and sliding sleeve component 5 is connected with a lower sliding sleeve component 6 matched with the external pipe packer 2; the detachable sleeve is provided with a plugging piece 7 matched with the lock and the sliding sleeve component 5, and a pushing piece 8 matched with the plugging piece 7 is arranged right above the plugging piece 7.
In view of the existing resource conditions, especially the oil field resource storage, generally speaking, oil field wells are deeper and deeper, and for a well cementing structure, generally speaking, a staged cementing device is adopted to pour cement slurry to the outer side of the whole pipeline, and during staged pouring, a large amount of pressure is generated due to pouring, so that great requirements are put on a high-performance liner hanger positioned on the ground, especially during a shaft well stage, the weight of the laid pipeline is ensured, the pressure of the cement slurry during pouring is also required to be considered, and the gravity generated by the cement slurry due to the universal gravitation, so that the great requirements are put on the liner hanger in a well cementing device, and in addition, during the staged pouring, a drilling and milling device is generally used to drill the whole rubber plug and a plug seat matched with the rubber plug, which can generate chips, cause certain scratches on the inner wall of the pipeline, influence the service life of the liner, and generate certain vibration on a cement ring outside the casing, which is not beneficial to the stable solidification of the cement ring outside the casing, and therefore, the external fixing component is specially arranged in order to stably support the pipeline, and can be used for improving the stability of the whole casing and for the well wall of the well and the well wall, and the whole casing, and the well cementing structure, and can be used for improving the stability of the well wall and for the well wall.
Further, the external fixing component 3 comprises a fixing round block 31 arranged on the upper portion of the detachable sleeve, round grooves 32 are evenly formed in the fixing round block 31 along the circumferential direction of the detachable sleeve, telescopic steel rod pieces 33 are respectively arranged in the round grooves 32, a trigger piece matched with the telescopic steel rod pieces is arranged on the detachable sleeve, and a trigger portion matched with the upper sliding sleeve component is arranged on the trigger piece.
Further, the external fixing component 3 comprises a fixing round block 31 arranged on the upper portion of the detachable sleeve, round grooves 32 are evenly formed in the fixing round block 31 along the circumferential direction of the detachable sleeve, telescopic steel rod pieces 33 are respectively arranged in the round grooves 32, a trigger piece matched with the telescopic steel rod pieces is arranged on the detachable sleeve, and a trigger portion matched with the upper sliding sleeve component is arranged on the trigger piece.
Furthermore, the trigger part comprises an electric control pulse hydraulic pump, the telescopic direction of the electric control pulse hydraulic pump is consistent with the radial direction of the detachable sleeve, and the hydraulic drill rod is positioned at the moving end of the electric control hydraulic pump.
Furthermore, the trigger piece includes a compressed air tank, the detachable sleeve is provided with a gas path channel for communicating the compressed air tank with the circular groove, a one-way valve is arranged in the gas path channel, a trigger control valve is arranged in the gas path channel and matched with the trigger control valve, and a plugging head part in clearance fit with the circular groove is arranged at the tail end of the telescopic steel drill rod piece.
Further, the trigger part comprises an injector, the injection direction of the injector is consistent with the radial direction of the pipeline, the telescopic channel of the injector is communicated with the circular groove, the telescopic steel drill rod part is positioned in the injector, and the trigger part of the injector is in clearance fit with the upper sliding sleeve assembly.
Furthermore, the telescopic drill rod piece comprises a fixing ring arranged in the circular groove and a fixed drill rod which is positioned in the fixing ring and is in rotating fit with the fixing ring, the fixed drill rod piece is in threaded connection with a drill rod head, the trigger piece comprises a fixing frame positioned at the tail end of the fixed drill rod, a rotating gear set which is in rotating fit with the drill rod head is arranged on the fixing frame,
go up the sliding sleeve subassembly include with the rack of rotation gear train complex, trigger portion including be located drive gear train and with rack complex trigger gear.
Preferably, set up in the detachable sheathed tube pipe wall with rack complex fixed recess, be provided with on the detachable sheathed tube pipe wall and accomodate the recess, accomodate the tail end department that the recess is located the circular slot, the mount on be provided with accomodate the expanding spring of recess inner wall connection, just the length direction of fixed recess is unanimous with detachable sheathed tube axial direction, and expanding spring's flexible direction with detachable sheathed tube radial direction is unanimous, just fixed recess runs through accomodate the recess, just the rack runs through change gear set.
Further, go up sliding sleeve subassembly 4 include with detachable sleeve pipe sliding fit's closing sleeve 42, closing sleeve 42 seted up with body circulation hole 11 complex sliding sleeve circulation hole 41, the top of closing sleeve 42 be provided with outside fixed subassembly complex conflict portion 43, the bottom department of closing sleeve be provided with the connecting portion 44 that lock and sliding sleeve subassembly are connected.
When whole go up the sliding sleeve subassembly and descend to certain height under the drive of shutoff piece, and it can drive whole rack whereabouts, make the rack slowly fall, and then drive the gear train and carry out work, make dry drill rod head rotate, then the drill rod head is outstanding from fixed cylinder, make the drill rod head bore into on the wall of a well, at this moment, the rack is taken out from whole mount, under expanding spring's drive, make the mount be arranged in accomodating the recess, and when last sliding sleeve subassembly resets, because the mount has been taken in to receiving a case groove, therefore, the drill rod head also need not to take in to the cylinder groove at this moment.
Specifically, connecting portion with lock and sliding sleeve subassembly normal running fit, the top of closing the cover is provided with the connection annular, be provided with rolling bearing in the connection annular, rolling bearing's outer lane with the closing cover is connected, the rolling bearing inner circle with lock and sliding sleeve subassembly are connected.
Further, lower sliding sleeve subassembly 6 include with detachable casing price sliding fit's removal cover 61, the top of removing cover 61 be provided with the installation department 62 that lock and sliding sleeve subassembly 5 are connected, the bottom of removing cover 61 is provided with resets 63, the bottom of removing cover 61 be provided with outer pipe packer 2 complex signal emission portion 64.
Specifically, the mounting part is in running fit with the lock and the sliding sleeve component, the top end of the moving sleeve is provided with a connecting circular groove, a connecting bearing is arranged in the connecting circular groove, the outer ring of the connecting bearing is connected with the moving sleeve, the inner ring of the connecting bearing is connected with the lock and the sliding sleeve component,
further, the lock and sliding sleeve assembly 5 includes an outer tube 51, a first annular plate 511 is disposed at the top end of the outer tube 51, a first circular tooth 512 is disposed at the bottom end of the first annular plate 511, an inner tube 52 is disposed in the outer tube 51, a second annular plate 521 opposite to the first annular plate 511 is disposed at the bottom end of the inner tube 52, a second circular tooth 522 opposite to the first circular tooth 512 is disposed on the second annular plate 521, a plurality of rotating gears 53 are uniformly disposed on the inner wall of the outer tube 51 along the circumferential direction of the outer tube, and the rotating gears 53 are respectively engaged with the first circular tooth 512 and the second circular tooth 522;
the inner tube 52 is followed the circumferential direction of inner tube evenly sets up a plurality of flexible grooves 523, be provided with flexible piece 54 in the flexible groove, flexible piece 54 flexible direction with the radial direction of inner tube 52 is unanimous, inner tube 52 begins to have the annular, be provided with in the annular with flexible piece 54 one-by-one transmission gear group 9, transmission gear group 9 with the cooperation of transmitting gear 53 rodent.
Further, the last coaxial rotation bevel gear 55 that is provided with of rotation gear, drive gear set 9 include with rotation bevel gear 55 rodent complex drive gear 91, drive gear 91's axis with the axis parallel arrangement of inner tube 52, just drive gear 91 sets up on the second crown plate 521 of inner tube, drive gear 91 is coaxial to be provided with worm 92, worm 92 rodent complex drive gear 93, the bottom on the flexible piece 54 be provided with drive gear rodent cooperation drive rack 94.
Further, bevel gear shaft meshing cooperation has the scroll bar, the coaxial drive gear that is provided with of scroll bar, the tail end of flexible piece be provided with drive gear rodent complex drive rack.
Further, shutoff piece 7 is including fixed skeleton 71, the bottom of fixed skeleton 71 be provided with lock and sliding sleeve subassembly 5 complex butt joint portion, be provided with rubber portion 72 on the top of fixed skeleton 71, rubber portion 72 with detachable sleeve pipe internal diameter clearance fit, just be provided with negative pressure recess 721 on the top surface of rubber portion 72.
Furthermore, a butt joint groove is formed in the butt joint portion, and the butt joint groove and the telescopic block are arranged.
Further, for further shutoff piece with the butt joint effect of lock and sliding sleeve subassembly, be provided with on the butt joint portion of fixed skeleton with flexible piece complex flexible ejector pad, be provided with expanding spring on the flexible ejector pad, expanding spring's flexible direction with detachable sheathed tube radial direction is unanimous, just expanding spring is provided with flexible ejector pad, the shape of flexible ejector pad is the wedge, the flexible piece set up to with flexible ejector pad clearance fit's wedge.
Further, the internal diameter of going up the sliding sleeve subassembly with the internal diameter of detachable sleeve pipe is unanimous, just the internal diameter of lock and sliding sleeve subassembly with detachable sleeve pipe internal diameter is unanimous, and the internal diameter of lower sliding sleeve subassembly with detachable sleeve pipe internal diameter is unanimous.
When the cementing device is used specifically, the whole stage cementing device is installed in a conveying pipeline through an upper connector and a lower connector, then the whole conveying pipeline is conveyed into an oil field well by using a wellhead control device, when the conveying pipeline is conveyed to an expected position, when the first stage cementing is required to be carried out, then the whole plugging piece is placed in the conveying pipeline, and the whole plugging piece is extruded into the stage cementing device under the drive of the whole drilling fluid.
Specifically, under the driving of the whole drilling fluid, the bottom end of the whole pushing member is in contact with the telescopic block of the lock and the sliding sleeve assembly, then the whole lock and the sliding sleeve assembly are driven to move towards the lower end, then the upper sliding sleeve assembly and the lower sliding sleeve assembly which are connected with the lock and the sliding sleeve assembly correspondingly move, and under the driving of the upper sliding sleeve assembly, the external fixing assembly is driven to perform related work, so that the steel rod member in the circular groove is driven by the trigger member, the conveying pipeline is fixedly connected with the well wall, and under the driving of the lower sliding sleeve assembly, the steel rod member is in contact with the external pipe packer, so that the external pipe packer is expanded.
Then the whole sliding sleeve circulation hole that closes the cover is linked together with detachable sheathed tube body circulation hole, drilling fluid flows through body circulation hole, and wash whole wall of a well, later carry the mixed mud liquid of concrete through whole wellhead equipment through pipeline, make it under the drilling fluid slow transportation, slowly transport to the annular space between pipeline and the oil field well in advance through body circulation hole, later place the propulsion piece directly over whole section grout liquid, under the pressure of propulsion piece, make the grout liquid in the pipeline also can slowly rise in the annular space, until the propulsion piece contacts with the shutoff piece item and utilize the negative pressure suction disc spare on the recommendation piece to contact with the negative pressure recess of shutoff piece, make it produce the negative pressure, and then make both adsorb, because the shutoff of the propulsion piece, and then suppress the annular space, after waiting to get the grout and solidify.
Under the pushing extrusion of propelling part, carry out the rotation of minizone simultaneously, make the butt joint recess that is located the shutoff piece with the flexible piece of lock and sliding sleeve subassembly cooperatees, utilize the butt joint of setting at the propelling part to draw the piece to drive and rotate in the propelling part at last, drive the shutoff piece afterwards and rotate, and then drive the inner tube and rotate, the rotation of inner tube makes the running gear who is located between inner tube and the outer tube rotate, and under running gear rotates, it can drive the rotation of transmission gear group, make and drive flexible piece indentation to flexible groove, and at this moment, under the drive of the piece that resets of whole lower sliding sleeve subassembly, whole lock and sliding sleeve subassembly can reset, and then the closure cover continues to reset, body circulation hole with sliding sleeve circulation hole dislocation, and then prevent the refluence of cement.
When the transmission gear set works, as the rotating bevel gear is coaxially arranged with the rotating gear, the rotating gear can drive the rotating bevel gear to rotate, and the rotating bevel gear can be meshed with the transmission gear arranged on the inner pipe, the transmission gear can rotate under the meshing of the plurality of bevel gears, the rotation of the transmission gear can drive the coaxially arranged turbine, and the turbine can drive the driving gear to rotate and then drive the telescopic block to stretch and retract.
And then repeating the steps to perform the next stage of well cementation.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a hierarchical cementer, includes cementer body (1), its characterized in that: the top and bottom ends of the cementing device body (1) are respectively connected with an upper joint and a lower joint, the lower part of the cementing device body is provided with an external pipe packer (2) matched with a well wall, an internal clearance plugging mechanism matched with the cementing device body is arranged inside the cementing device body (1), the cementing device body (1) is provided with a body circulation hole (11), the upper part of the cementing device (1) is provided with an external fixing component (3), and the external fixing component (3) is positioned right above the body circulation hole (11);
the cementing device body (1) comprises a detachable sleeve, a groove matched with the internal clearance plugging mechanism is formed in the inner wall of the detachable sleeve, the internal clearance plugging mechanism comprises an upper sliding sleeve component (4) matched with the external fixing component, a sliding sleeve circulating hole (41) matched with the body circulating hole (11) is formed in the upper sliding sleeve component (4), the upper sliding sleeve component (4) is connected with a lock and sliding sleeve component (5) matched with a plugging piece, and the bottom end of the lock and sliding sleeve component (5) is connected with a lower sliding sleeve component (6) matched with the external pipe packer (2);
the detachable sleeve is provided with a plugging piece (7) matched with the lock and the sliding sleeve component (5), and a pushing piece (8) matched with the plugging piece (7) is arranged right above the plugging piece (7).
2. The staged cementing device of claim 1, wherein: the outer packer of pipe (2) is established including the cover packing element (21) in the detachable sheathed tube outside, the packing element with be provided with the expanded seal chamber of chargeable liquid formula between the detachable sleeve pipe, be provided with on the detachable sleeve pipe with packing element (21) complex annotates liquid spare, it is in through setting up annotate liquid passageway in the detachable sleeve pipe with the seal chamber cooperation to annotate the liquid spare, be provided with the check valve in the notes liquid passageway, be provided with pressure trigger pipe wall valve in the notes liquid passageway, annotate be provided with on the gas spare with down sliding sleeve subassembly complex pressure trigger spare.
3. The staged cementing apparatus according to claim 1, wherein: the external fixation assembly (3) comprises a fixed round block (31) arranged on the upper portion of the detachable sleeve, round grooves (32) are evenly formed in the fixed round block (31) along the circumferential direction of the detachable sleeve, telescopic steel bar pieces (33) are respectively arranged in the round grooves (32), and a trigger piece matched with the telescopic steel bar pieces is arranged on the detachable sleeve and provided with a trigger portion matched with the upper sliding sleeve assembly.
4. The staged cementing device of claim 1, wherein: go up sliding sleeve subassembly (4) include with detachable sleeve pipe sliding fit's closing cover (42), closing cover (42) seted up with body circulation hole (11) complex sliding sleeve circulation hole (41), the top of closing cover (42) be provided with outside fixed subassembly complex conflict portion (43), the bottom department of closing the cover be provided with connecting portion (44) that lock and sliding sleeve subassembly are connected.
5. The staged cementing apparatus according to claim 2, wherein: lower sliding sleeve subassembly (6) include with detachable sleeve price sliding fit's removal cover (61), the top of removing cover (61) be provided with installation department (62) that lock and sliding sleeve subassembly (5) are connected, the bottom of removing cover (61) is provided with resets (63), the bottom of removing cover (61) be provided with outside of tubes packer (2) complex signal transmission portion (64).
6. The staged cementing apparatus according to claim 1, wherein: the lock and sliding sleeve assembly (5) comprises an outer pipe (51), a first annular plate (511) is arranged at the top end of the outer pipe (51), first circular teeth (512) are arranged at the bottom end of the first annular plate (511), an inner pipe (52) is arranged in the outer pipe (51), a second annular plate (521) opposite to the first annular plate (511) is arranged at the bottom end of the inner pipe (52), second circular teeth (522) opposite to the first circular teeth (512) are arranged on the second annular plate (521), a plurality of rotating gears (53) are uniformly arranged on the inner wall of the outer pipe (51) along the circumferential direction of the outer pipe, and the rotating gears (53) are respectively matched with the first circular teeth (512) and the second circular teeth (522);
inner tube (52) are followed the circumferential direction of inner tube evenly sets up a plurality of flexible grooves (523), be provided with flexible piece (54) in the flexible groove, flexible direction of flexible piece (54) with the radial direction of inner tube (52) is unanimous, inner tube (52) begin to have the annular, be provided with in the annular with flexible piece (54) one-by-one transmission complex drive gear group (9), drive gear group (9) with running gear (53) rodent cooperation.
7. The staged cementing device of claim 6, wherein: the last coaxial rotation bevel gear (55) that is provided with of rotating gear, drive gear group (9) include with rotation bevel gear (55) rodent complex drive gear (91), the axis of drive gear (91) with the axis parallel arrangement of inner tube (52), just drive gear (91) set up on the second crown plate (521) of inner tube, drive gear (91) coaxial be provided with worm (92), worm (92) rodent complex drive gear (93), the bottom on flexible piece (54) be provided with drive gear rodent cooperation drive rack (94).
8. The staged cementing apparatus according to claim 1, wherein: the shutoff piece (7) is including fixed skeleton (71), the bottom of fixed skeleton (71) be provided with lock and sliding sleeve subassembly (5) complex butt joint portion, be provided with rubber portion (72) on the top of fixed skeleton (71), rubber portion (72) with detachable cover internal diameter clearance fit, just be provided with negative pressure recess (721) on the top surface of rubber portion (72).
9. The staged cementing apparatus according to claim 8, wherein: the propelling part (8) comprises a propelling supporting cylinder (81), a rubber block (82) is arranged at the bottom end of the propelling supporting cylinder, the rubber block is provided with a negative pressure sucking disc part (83) matched with the negative pressure groove, and a butt joint pulling part is arranged at the tail end of the propelling straight descending cylinder.
10. The staged cementing device of claim 1, wherein: the inner diameter of the upper sliding sleeve component is consistent with the inner diameter of the detachable sleeve, the inner diameters of the lock and the sliding sleeve component are consistent with the inner diameter of the detachable sleeve, and the inner diameter of the lower sliding sleeve component is consistent with the inner diameter of the detachable sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844905.1A CN115324524B (en) | 2022-07-18 | 2022-07-18 | Stage cementing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210844905.1A CN115324524B (en) | 2022-07-18 | 2022-07-18 | Stage cementing device |
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| CN115324524A true CN115324524A (en) | 2022-11-11 |
| CN115324524B CN115324524B (en) | 2023-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816296A (en) * | 2023-07-10 | 2023-09-29 | 德州隆科石油装备有限公司 | Single-plug clamp fast-assembling cement head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738171A (en) * | 1997-01-09 | 1998-04-14 | Halliburton Company | Well cementing inflation packer tools and methods |
| CN201292816Y (en) * | 2008-11-24 | 2009-08-19 | 中国石油集团长城钻探工程有限公司 | Self-pouring sliding bush closing type cementing machine |
| CN109869114A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | A kind of packing formula stage cementing device and its operational method |
| CN111827922A (en) * | 2020-07-17 | 2020-10-27 | 江苏赛维斯石油科技有限公司 | Drilling-free stage cementing device |
-
2022
- 2022-07-18 CN CN202210844905.1A patent/CN115324524B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738171A (en) * | 1997-01-09 | 1998-04-14 | Halliburton Company | Well cementing inflation packer tools and methods |
| CN201292816Y (en) * | 2008-11-24 | 2009-08-19 | 中国石油集团长城钻探工程有限公司 | Self-pouring sliding bush closing type cementing machine |
| CN109869114A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | A kind of packing formula stage cementing device and its operational method |
| CN111827922A (en) * | 2020-07-17 | 2020-10-27 | 江苏赛维斯石油科技有限公司 | Drilling-free stage cementing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816296A (en) * | 2023-07-10 | 2023-09-29 | 德州隆科石油装备有限公司 | Single-plug clamp fast-assembling cement head |
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| CN115324524B (en) | 2023-12-26 |
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