CN110306932B - Local compaction pressurizing compression mechanism for rock debris - Google Patents
Local compaction pressurizing compression mechanism for rock debris Download PDFInfo
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- CN110306932B CN110306932B CN201910519998.9A CN201910519998A CN110306932B CN 110306932 B CN110306932 B CN 110306932B CN 201910519998 A CN201910519998 A CN 201910519998A CN 110306932 B CN110306932 B CN 110306932B
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- 239000011435 rock Substances 0.000 title claims abstract description 94
- 238000007906 compression Methods 0.000 title claims abstract description 32
- 230000006835 compression Effects 0.000 title claims abstract description 31
- 238000005056 compaction Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 title claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims description 86
- 230000007704 transition Effects 0.000 claims description 35
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012634 fragment Substances 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 18
- 238000005520 cutting process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices
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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)
- Actuator (AREA)
Abstract
The invention discloses a rock debris local compaction pressurizing compression mechanism, which comprises a pressing head cylinder (1) and a pressing cylinder (20), wherein the pressing head cylinder (1) is internally provided with a first rock debris channel (17) which can convey rock debris into the front part of the pressing head cylinder (1), the pressing head cylinder (1) is internally provided with a plug rod (3) which can push the rock debris out of the pressing head cylinder (1) forwards, the plug rod (3) can also press the rock debris out of the front part of the pressing head cylinder (1), the pressing cylinder (20) is internally provided with a second rock debris channel (31) which can convey the rock debris into the pressing head cylinder (1), the second rock debris channel (31) is communicated with the first rock debris channel (17), and the pressing cylinder (20) can drive the pressing head cylinder (1) to move forwards. The rock debris local compaction pressurizing compression mechanism can improve the compaction degree of rock debris under the action of relatively lower compression load by adopting a mode of integral compaction and local compaction pressurizing, so as to adapt to the requirement of underground rock debris compression operation.
Description
Technical Field
The invention relates to the technical field of petroleum drilling equipment, in particular to a rock debris local compaction pressurizing compression mechanism.
Background
Drilling is an important means of oil and gas exploration, and mainly comprises a plurality of processes of drilling, logging, well cementation completion and the like, and large-scale equipment such as a drilling machine, a logging truck, a well cementation truck and the like are needed. The equipment and technology used for ocean drilling are more complex, and especially the ocean drilling machine is high in daily cost, and the daily cost of the deep ocean drilling machine of 3000m is counted to be more than 30 ten thousand cents. The drillless drilling technology is a new technology which does not need a driller, and can self-crawl into the stratum by means of a driller, integrates drilling, geophysical prospecting and logging while drilling, and is characterized in that the driller is adopted as the core equipment, and the driller is an 'earth boring robot' provided with various detecting instruments. Because the drilling machine, the drilling fluid and the casing pipe are not needed for well cementation, the operation of drilling, logging and the like can be completed by one set of drilling tools, the real-time detection of the whole drilling process is realized, and personnel and flow are simplified, so that the drilling cost can be obviously reduced. An important core function of a drillless drill is to push cuttings to the end of the drill, compact cuttings over a range of loads and times, and seal the wellbore.
Currently, the compression method adopted abroad is to simply drive the pressure head to compress the rock fragments through the hydraulic cylinder, and the method needs to provide huge compression load to compress and shape the rock fragments. However, because the drill anchor mechanism provides limited support, it is not able to withstand the large counter force generated during compression, and thus it is difficult to compact cuttings downhole using this compression method.
Disclosure of Invention
In order to compact rock debris underground, the invention provides the rock debris local compaction pressurizing compression mechanism, which can improve the rock debris compactness under the action of relatively low compression load by adopting a local compaction pressurizing mode so as to reduce the huge counter force generated during compression, improve the stress state of a drilling machine, improve the reliability of the drilling machine and meet the requirement of the compression operation of the rock debris underground.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a local compaction pressurization compression mechanism of detritus, including the pressure head jar and the extrusion jar that set up around, contain in the pressure head jar can carry the detritus to the first detritus passageway in the pressure head jar front portion, still contain in the pressure head jar and can push out the external cock stem of pressure head jar forward with the detritus, the cock stem can also compress tightly the external detritus of pressure head jar front portion, contain in the extrusion jar and can carry the detritus to the second detritus passageway in the pressure head jar, second detritus passageway and first detritus passageway intercommunication, the extrusion jar can drive the pressure head jar and move forward.
In the pressure head cylinder, the front end of a pressure head front cylinder barrel of the pressure head cylinder is connected with a pressure head front end cover, and the rear end of the pressure head front cylinder barrel is connected with a pressure head rear cylinder barrel; the piston of the pressure head is sleeved in the front cylinder barrel of the pressure head, the front end of the piston of the pressure head is connected with a plurality of plug rods, and each plug rod is respectively inserted into a corresponding plug rod through hole on the front end cover of the pressure head; the pressure head dabber passes the centre bore of pressure head piston, and the inner chamber of pressure head front end housing is inserted to the front end of pressure head dabber, and the pressure head rear end housing cover is located outside the rear portion of pressure head dabber, and pressure head rear end housing can make the pressure head dabber fixed for pressure head rear cylinder, and the rear end of pressure head dabber is equipped with the adapter sleeve outward.
A first displacement sensor is connected between the pressure head mandrel and the pressure head piston, the body of the first displacement sensor is positioned in a first mounting hole of the pressure head mandrel, and a measuring rod of the first displacement sensor passes through a first cursor in the pressure head piston and is inserted into the first guide hole; a material dividing cone is arranged in the inner cavity of the front end cover of the pressure head.
The first rock debris channel is located the pressure head dabber, still be provided with first cable channel in the pressure head dabber, first signal line passageway, first oil circuit passageway and second oil circuit passageway, first rock debris passageway leads to the inner chamber of pressure head front end housing, the stopper rod through-hole axial link up pressure head front end housing, first cable channel leads to the cable release mouth of pressure head front end housing through cable seal cover, lock nut, first signal line passageway leads to first mounting hole, first oil circuit passageway leads to pressure head jar front chamber, second oil circuit passageway leads to pressure head jar rear chamber.
In the extrusion cylinder, the front end of the extrusion cylinder is connected with the extrusion front end cover, and the rear end of the extrusion cylinder is connected with the extrusion rear end cover; the extrusion piston is sleeved in the extrusion cylinder barrel, the front end of the extrusion piston extends out of the extrusion front end cover, the front end of the extrusion piston is in butt joint with the pressing head mandrel, the body of the second displacement sensor is positioned in the second mounting hole of the extrusion rear end cover, and the measuring rod of the second displacement sensor penetrates through the second cursor in the extrusion piston and is inserted into the second guide hole.
The second rock debris channel is located in the extrusion piston, a second cable channel, a second signal line channel, a third oil channel, a fourth oil channel and a fifth oil channel are further arranged in the extrusion piston, a first transition joint is inserted between the second rock debris channel and the first rock debris channel at the joint of the extrusion piston and the mandrel of the pressure head, a second transition joint is inserted between the second cable channel and the first cable channel, a third transition joint is inserted between the second signal line channel and the first signal line channel, a fourth transition joint is inserted between the third oil channel and the first oil channel, and a fifth transition joint is inserted between the fourth oil channel and the second oil channel.
And at the rear end of the extrusion piston, a third rock debris channel of the extrusion rear end cover is in butt joint with a second rock debris channel of the extrusion piston, a port of a second cable channel is connected with the first follow-up plunger, a port of a second signal line channel is connected with the second follow-up plunger, a port of a third oil channel is connected with the third follow-up plunger, a port of a fourth oil channel is connected with the fourth follow-up plunger, and a port of a fifth oil channel is connected with the fifth follow-up plunger.
The extrusion rear end cover is internally provided with a third rock debris channel, a third cable channel, a third signal line channel, a fourth signal line channel, a sixth oil channel, a seventh oil channel, an eighth oil channel and a ninth oil channel, wherein the third rock debris channel is communicated with the second rock debris channel through a rock debris pipe, the fourth signal line channel is communicated with a second mounting hole of the extrusion rear end cover, the ninth oil channel is communicated with a rear cavity of the extrusion cylinder, a first follow-up plunger is inserted in the third cable channel, a second follow-up plunger is inserted in the third signal line channel, a third follow-up plunger is inserted in the sixth oil channel, a fourth follow-up plunger is inserted in the seventh oil channel, and a fifth follow-up plunger is inserted in the eighth oil channel.
The rear end of the extrusion rear end cover is provided with a rock debris interface, a cable interface, a first signal interface, a second signal interface, a first oil path interface, a second oil path interface, a third oil path interface and a fourth oil path interface; the rock chip interface sequentially passes through a third rock chip channel, a rock chip pipe, a second rock chip channel, a first transition joint, a first rock chip channel, an inner cavity of a front end cover of the pressure head and a plug rod through hole to form a first through channel; the cable interface sequentially passes through the third cable channel, the first follow-up plunger, the second cable channel, the second transition joint, the first cable channel, the cable sealing sleeve and the cable release port to form a second penetrating channel; the first signal interface sequentially passes through a third signal line channel, a second follow-up plunger, a second signal line channel, a third transition joint and the first signal line channel to form a third through channel; the second signal interface is communicated with the second displacement sensor through a fourth signal line channel in sequence; the first oil way interface is communicated with the front cavity of the pressure head cylinder through a sixth oil way channel, a third follow-up plunger, a third oil way channel, a fourth transition joint and the first oil way channel in sequence to form a fourth through channel; the second oil way interface is communicated with the rear cavity of the pressure head cylinder through a seventh oil way channel, a fourth follow-up plunger, a fourth oil way channel, a fifth transition joint and a second oil way channel in sequence to form a fifth through channel; the third oil way interface is communicated with the front cavity of the extrusion cylinder through an eighth oil way channel, a fifth follow-up plunger and a fifth oil way channel in sequence to form a sixth penetrating channel; the fourth oil way interface is communicated with the rear cavity of the extrusion cylinder through the ninth oil way channel in sequence to form a seventh penetrating channel.
The front cavity of the pressure head cylinder is sealed and isolated from the rear cavity of the pressure head cylinder, the front cavity of the extrusion cylinder is sealed and isolated from the rear cavity of the extrusion cylinder, and the head of the plug rod is a flat head, a ball head, a step head, a conical head or a bullet head.
The beneficial effects of the invention are as follows: by means of integral extrusion and local extrusion compaction, the compactness of the rock debris can be improved under the action of relatively low compression load, so that the rock debris compression operation requirement in the pit can be met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is an overall cross-sectional view of a rock debris partial compaction and pressurization compression mechanism according to the present invention.
Fig. 2 is a cross-sectional view of the ram cylinder of fig. 1.
Fig. 3 is a cross-sectional view of the extrusion cylinder of fig. 1.
Fig. 4 is a front view of the ram cylinder.
Fig. 5 is a left side view of the ram cylinder.
Fig. 6 is a right side view of the ram cylinder.
Fig. 7 is a cross-sectional view taken along A-A in fig. 5.
Fig. 8 is a sectional view taken along the direction B-B in fig. 5.
Fig. 9 is a front view of the squeeze cylinder.
Fig. 10 is a left side view of the squeeze cylinder.
Fig. 11 is a right side view of the squeeze cylinder.
Fig. 12 is a cross-sectional view taken along the direction C-C in fig. 10.
Fig. 13 is a sectional view taken along the direction D-D in fig. 10.
Fig. 14 is a sectional view taken along the direction E-E in fig. 10.
Fig. 15 is a schematic view of the stem head with the stem head flat.
Fig. 16 is a schematic view of the stem head as a ball head.
Fig. 17 is a schematic view of the stopper rod head as a stepped head.
Fig. 18 is a schematic view of the stem head being a conical head.
Fig. 19 is a schematic view of the stem head as a bullet.
1. A ram cylinder; 2. a front end cover of the pressure head; 3. a plug rod; 4. a front cylinder of the pressure head; 5. a ram piston; 6. a cylinder barrel behind the pressure head; 7. a pressure head mandrel; 8. a pressure head rear end cover; 9. connecting sleeves; 10. a cable gland; 11. sealing in a combined way; 12. a lock nut; 13. a gland; 14. a seal ring; 15. a plug rod through hole; 16. a material dividing cone; 17. a first cuttings passage; 18. a first cable channel; 19. a clamp; 20. an extrusion cylinder; 21. extruding the front end cover; 22. extruding the cylinder barrel; 23. extruding the piston; 24. extruding the rear end cover; 25. a second transition joint; 26. a second cable channel; 27. a first follower plunger; 28. a third cable pathway; 29. a cable interface; 30. a first transition joint; 31. a second cuttings passage; 32. a cuttings pipe; 33. a third cuttings passage; 34. a cuttings interface; 35. a first displacement sensor; 36. a first cursor; 37. a first guide hole; 38. a first mounting hole; 39. a first signal line channel; 40. a ram cylinder front cavity; 41. a first oil passage; 42. a ram cylinder rear cavity; 43. a second oil path; 44. a cable release port; 45. a fourth transition joint; 46. a third oil passage; 47. a third follower plunger; 48. a sixth oil passage; 49. a first oil path interface; 50. a rear cavity of the extrusion cylinder; 51. a ninth oil passage; 52. a fourth oil path interface; 53. extruding a front cavity of the cylinder; 54. a fifth oil passage; 55. a fifth follower plunger; 56. an eighth oil passage; 57. a third oil path interface; 58. a fifth transition joint; 59. a fourth oil passage; 60. a fourth follower plunger; 61. a seventh oil passage; 62. a second oil path interface; 63. a third transition joint; 64. a second signal line channel; 65. a second follower plunger; 66. a third signal line channel; 67. a first signal interface; 68. a second displacement sensor; 69. a second cursor; 70. a second guide hole; 71. a second mounting hole; 72. a fourth signal line channel; 73. a second signal interface; 74. extruding the surface; 75. the flat head is formed; 76. ball head; 77. a step head; 78. a conical head; 79. bullet heads.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a local compaction pressurization compression mechanism of detritus, including the pressure head jar 1 and the extrusion jar 20 of connection around, contain in the pressure head jar 1 can carry the detritus to the first detritus passageway 17 in the pressure head jar 1 front portion, still contain in the pressure head jar 1 can push out the external cock stem 3 of pressure head jar 1 forward with the detritus, the external detritus of pressure head jar 1 front portion can also be pressed to the cock stem 3, in order to realize carrying out local compaction pressurization to the detritus, contain in the extrusion jar 20 can carry the second detritus passageway 31 in the pressure head jar 1 with the detritus, second detritus passageway 31 and first detritus passageway 17 intercommunication, the extrusion jar 20 can drive pressure head jar 1 and move forward, in order to realize compressing the detritus, as shown in fig. 1 to 3.
In the pressure head cylinder 1, the front end of a pressure head front cylinder barrel 4 of the pressure head cylinder 1 is fixedly connected with a pressure head front end cover 2, and the rear end of the pressure head front cylinder barrel 4 is fixedly connected with a pressure head rear cylinder barrel 6; the pressure head piston 5 is arranged in the pressure head front cylinder barrel 4, the pressure head piston 5 is cylindrical, the front end of the pressure head piston 5 is connected with a plurality of plug rods 3, and each plug rod 3 is respectively inserted into a corresponding plug rod through hole 15 on the pressure head front end cover 2; the front end of the pressure head mandrel 7 is placed into the pressure head front cylinder 4 from the pressure head rear cylinder 6, the pressure head mandrel 7 penetrates through the center hole of the pressure head piston 5 and then is inserted into the inner cavity of the pressure head front end cover 2, the pressure head rear end cover 8 is sleeved from the rear end of the pressure head mandrel 7, the pressure head rear end cover 8 is connected with the pressure head rear cylinder 6 and props against the pressure head mandrel 7, the pressure head mandrel 7 is fixed relative to the pressure head rear cylinder 6, the connecting sleeve 9 is arranged at the rear end of the pressure head mandrel 7, and the clamping hoop 19 or the steel ball is arranged between the pressure head mandrel 7 and the connecting sleeve 9.
The body of the first displacement sensor 35 is arranged on a first mounting hole 38 of the ram mandrel 7, and a measuring rod of the first displacement sensor 35 passes through a first cursor 36 on the ram piston 5 and then is inserted into a first guide hole 37; a material dividing cone 16 is arranged in the inner cavity of the pressure head front end cover 2, a sealing ring 14 is sleeved on the outermost circle of the pressure head front end cover 2, and the sealing ring 14 is pressed by a pressing cover 13. The first rock debris channel 17, the first cable channel 18, the first signal line channel 39, the first oil channel 41 and the second oil channel 43 are arranged in the ram mandrel 7, the first rock debris channel 17 is led to the inner cavity of the ram front end cover 2, the plug rod through hole 15 is led to the extrusion surface 74 (namely the front end surface of the ram front end cover 2), the first cable channel 18 is led to the cable release port 44 of the ram front end cover 2 through the cable gland 10 and the lock nut 12, the combined seal 11 is arranged in the cable gland 10, the first signal line channel 39 is led to the first mounting hole 38, and the first oil channel 41 and the second oil channel 43 are led to the ram cylinder front cavity 40 and the ram cylinder rear cavity 42 respectively, as shown in fig. 4 to 8.
In the extrusion cylinder 20, the front end of an extrusion cylinder 22 of the extrusion cylinder 20 is fixedly connected with an extrusion front end cover 21, and the rear end of the extrusion cylinder 22 is fixedly connected with an extrusion rear end cover 24; the extrusion piston 23 is placed in the extrusion cylinder 22, the second rock debris channel 31 is located in the extrusion piston 23, the extrusion piston 23 is of an integrated structure composed of a piston body and a rod body, the rod body of the extrusion piston 23 extends out of the extrusion front end cover 21, and the end of the rod body of the extrusion piston 23 is in butt joint with the pressure head mandrel 7 and screwed through the connecting sleeve 9. A plurality of hollow follower plungers (such as a first follower plunger 27) are fixedly mounted at the end of the piston body of the extrusion piston 23, the follower plungers are of a circular tubular structure, and each follower plunger is respectively inserted into a corresponding plunger hole on the extrusion rear end cover 24.
The body of the second displacement sensor 68 is mounted in a second mounting hole 71 in the squeeze rear end cap 24, and the measuring rod of the second displacement sensor 68 is inserted into a second guide hole 70 after passing through a second cursor 69 on the squeeze piston 23. The extrusion piston 23 is provided therein with the second cuttings passage 31, the second cable passage 26, the second signal line passage 64, the third oil passage 46, the fourth oil passage 59, and the fifth oil passage 54. At the junction of the rod body of the extrusion piston 23 and the ram mandrel 7, a first transition joint 30 is inserted between the second rock debris channel 31 and the first rock debris channel 17, a second transition joint 25 is inserted between the second cable channel 26 and the first cable channel 18, a third transition joint 63 is inserted between the second signal line channel 64 and the first signal line channel 39, a fourth transition joint is inserted between the third oil channel 46 and the first oil channel 41, and a fifth transition joint 58 is inserted between the fourth oil channel 59 and the second oil channel 43.
At the end of the piston body of the extruding piston 23, the rock chip tube 32 mounted and fixed on the extruding rear end cover 24 is inserted into the second rock chip channel 31, the port of the second cable channel 26 is connected with the first follower plunger 27, the port of the second signal line channel 64 is connected with the second follower plunger 65, and the ports of the third oil channel 46, the fourth oil channel 59 and the fifth oil channel 54 are respectively connected with the third follower plunger 47, the fourth follower plunger 60 and the fifth follower plunger 55 in a one-to-one correspondence.
The extrusion rear end cover 24 is internally provided with a third rock chip passage 33, a third cable passage 28, a third signal line passage 66, a fourth signal line passage 72, a sixth oil passage 48, a seventh oil passage 61, an eighth oil passage 56 and a ninth oil passage 51, the third rock chip passage 33 is communicated with the rock chip tube 32, the fourth signal line passage 72 is communicated with a second mounting hole 71 of the extrusion rear end cover 24, the ninth oil passage 51 is communicated with the extrusion cylinder rear cavity 50, and the first follower plunger 27, the second follower plunger 65, the third follower plunger 47, the fourth follower plunger 60 and the fifth follower plunger 55 are inserted in one-to-one correspondence respectively in the third cable passage 28, the third signal line passage 66, the sixth oil passage 48, the seventh oil passage 61 and the eighth oil passage 56.
The rear end of the squeeze rear end cap 24 is provided with the cuttings interface 34, the cable interface 29, the first signal interface 67, the second signal interface 73, the first oil path interface 49, the second oil path interface 62, the third oil path interface 57, and the fourth oil path interface 52.
The rock chip interface 34 is communicated with the extrusion surface 74 through the third rock chip channel 33, the rock chip pipe 32, the second rock chip channel 31, the first transition joint 30, the first rock chip channel 17, the inner cavity of the pressure head front end cover 2 and the plug rod through hole 15 in sequence to form a first through channel; the cable interface 29 sequentially passes through the third cable channel 28, the first follow-up plunger 27, the second cable channel 26, the second transition joint 25, the first cable channel 18 and the cable sealing sleeve 10 to be communicated with a cable release port 44 of the front end cover 2 of the pressure head to form a second penetrating channel; the first signal interface 67 is communicated with the first displacement sensor 35 through the third signal line channel 66, the second follower plunger 65, the second signal line channel 64, the third transition joint 63 and the first signal line channel 39 in sequence to form a third through channel; the second signal interface 73 is communicated with the second displacement sensor 68 through the fourth signal line channel 72 in sequence; the first oil passage interface 49 is communicated with the front cavity 40 of the pressure head cylinder through a sixth oil passage 48, a third follow-up plunger 47, a third oil passage 46, a fourth transition joint 45 and the first oil passage 41 in sequence to form a fourth penetrating passage; the second oil path interface 62 is communicated with the pressure head cylinder rear cavity 42 through a seventh oil path channel 61, a fourth follow-up plunger 60, a fourth oil path channel 59, a fifth transition joint 58 and a second oil path channel 43 in sequence to form a fifth through channel; the third oil path interface 57 is communicated with the extrusion cylinder front cavity 53 through the eighth oil path channel 56, the fifth follow-up plunger 55 and the fifth oil path channel 54 in sequence to form a sixth penetrating channel; the fourth oil passage port 52 communicates with the cylinder rear chamber 50 sequentially through the ninth oil passage 51 to form a seventh through passage, as shown in fig. 9 to 14.
Sealing and isolation are required between the ram cylinder front cavity 40 and the ram cylinder rear cavity 42 and between the two cavities and the external environment. The front cavity 53 of the extrusion cylinder and the rear cavity 50 of the extrusion cylinder are sealed from the external environment. Sealing and isolation are needed between all channels and between the channels and the external environment. The head of the ram cylinder 1 stem 3 may be constructed with a flat head 75, a ball head 76, a stepped head 77, a conical head 78 or a bullet head 79 as shown in fig. 15 to 19.
The working process of the rock debris local compaction pressurizing compression mechanism is described below.
During compression, rock debris is pumped to the inner cavity of the front end cover 2 of the pressure head and the position of the plug rod through hole 15 through the second rock debris channel 31 and the first rock debris channel 17 from the rock debris interface 34; then the second oil way connector 62 supplies oil to the rear cavity 42 of the ram cylinder, the ram piston 5 pushes the ram 3 to extend forwards (move upwards in fig. 1), and the rock fragments in the ram through hole 15 are pushed onto the extrusion surface 74; the first signal interface 67 receives the first displacement sensor 35 signal to detect the displacement of the stopper rod 3, and stops when the head (i.e., the front end) of the stopper rod 3 extends to be flush with the pressing surface 74; then the fourth oil way interface 52 supplies oil to the rear cavity 50 of the extrusion cylinder, the extrusion piston 23 pushes the whole pressure head cylinder 1 to extend forwards through the rod body, and the rock fragments on the extrusion surface 74 are pushed towards the upper sealed well hole so as to compress the rock fragments; the second signal interface 73 receives the signal of the second displacement sensor 68, detects the displacement of the ram cylinder 1, and when the compression displacement is stable, the second oil way interface 62 continues to supply oil to the rear cavity 42 of the ram cylinder, and the ram piston 5 continues to push the ram 3 to extend forwards (move upwards in fig. 1), so that the head of the ram 3 is inserted into the rock debris to realize local compression compaction; when the displacement of the plug rod 3 is stabilized, oil is supplied to the ram cylinder front chamber 40 and the ram cylinder front chamber 53 by the first oil passage interface 49 and the third oil passage interface 57, respectively, and the plug rod 3 and the ram cylinder 1 are retracted to the initial positions, and then the above compression process is repeated.
The built-in cable of the drill passes out of the cable connector 29 and then out of the cable release port 44 of the ram front end cap 2, is buried in the ground and is led to the ground, and is connected with a ground system.
In the present invention, "front" is the upper direction in fig. 1, and "rear" is the lower direction in fig. 1.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical characteristics, the technical characteristics and technical scheme and the technical scheme can be freely combined for use.
Claims (4)
1. The rock debris local compaction pressurizing compression mechanism is characterized by comprising a pressure head cylinder (1) and a compression cylinder (20) which are arranged front and back, wherein the pressure head cylinder (1) is internally provided with a first rock debris channel (17) which can convey rock debris into the front part of the pressure head cylinder (1), the pressure head cylinder (1) is internally provided with a plug rod (3) which can push the rock debris out of the pressure head cylinder (1) forwards, the plug rod (3) can also press the rock debris out of the front part of the pressure head cylinder (1), the compression cylinder (20) is internally provided with a second rock debris channel (31) which can convey the rock debris into the pressure head cylinder (1), the second rock debris channel (31) is communicated with the first rock debris channel (17), and the compression cylinder (20) can drive the pressure head cylinder (1) to move forwards;
in the pressure head cylinder (1), the front end of a pressure head front cylinder barrel (4) of the pressure head cylinder (1) is connected with a pressure head front end cover (2), and the rear end of the pressure head front cylinder barrel (4) is connected with a pressure head rear cylinder barrel (6); the pressing head piston (5) is sleeved in the pressing head front cylinder barrel (4), the front end of the pressing head piston (5) is connected with a plurality of plug rods (3), and each plug rod (3) is respectively inserted into a corresponding plug rod through hole (15) on the pressing head front end cover (2); the pressing head mandrel (7) penetrates through a central hole of the pressing head piston (5), the front end of the pressing head mandrel (7) is inserted into an inner cavity of the pressing head front end cover (2), the pressing head rear end cover (8) is sleeved outside the rear part of the pressing head mandrel (7), the pressing head rear end cover (8) can enable the pressing head mandrel (7) to be fixed relative to the pressing head rear cylinder barrel (6), and a connecting sleeve (9) is arranged outside the rear end of the pressing head mandrel (7);
A first displacement sensor (35) is connected between the pressure head mandrel (7) and the pressure head piston (5), the body of the first displacement sensor (35) is positioned in a first mounting hole (38) of the pressure head mandrel (7), and a measuring rod of the first displacement sensor (35) passes through a first cursor (36) in the pressure head piston (5) and is inserted into a first guide hole (37); a material dividing cone (16) is arranged in the inner cavity of the front end cover (2) of the pressure head;
The first rock debris channel (17) is positioned in the pressure head mandrel (7), a first cable channel (18), a first signal line channel (39), a first oil way channel (41) and a second oil way channel (43) are further arranged in the pressure head mandrel (7), the first rock debris channel (17) is led to the inner cavity of the pressure head front end cover (2), the plug rod through hole (15) axially penetrates through the pressure head front end cover (2), the first cable channel (18) is led to a cable release port (44) of the pressure head front end cover (2) through the cable sealing sleeve (10) and the locking nut (12), a combined seal (11) is arranged in the cable sealing sleeve (10), the first signal line channel (39) is led to the first mounting hole (38), the first oil way channel (41) is led to the pressure head cylinder front cavity (40), and the second oil way channel (43) is led to the pressure head cylinder rear cavity (42);
In the extrusion cylinder (20), the front end of the extrusion cylinder barrel (22) is connected with the extrusion front end cover (21), and the rear end of the extrusion cylinder barrel (22) is connected with the extrusion rear end cover (24); the extrusion piston (23) is sleeved in the extrusion cylinder barrel (22), the front end of the extrusion piston (23) extends out of the extrusion front end cover (21), the front end of the extrusion piston (23) is in butt joint with the pressure head mandrel (7), the body of the second displacement sensor (68) is positioned in a second mounting hole (71) of the extrusion rear end cover (24), and a measuring rod of the second displacement sensor (68) penetrates through a second vernier (69) in the extrusion piston (23) and is inserted into the second guide hole (70);
The second rock debris channel (31) is positioned in the extrusion piston (23), a second cable channel (26), a second signal line channel (64), a third oil channel (46), a fourth oil channel (59) and a fifth oil channel (54) are further arranged in the extrusion piston (23), a first transition joint (30) is inserted between the second rock debris channel (31) and the first rock debris channel (17) at the butt joint position of the extrusion piston (23) and the press head mandrel (7), a second transition joint (25) is inserted between the second cable channel (26) and the first cable channel (18), a third transition joint (63) is inserted between the second signal line channel (64) and the first signal line channel (39), a fourth transition joint (45) is inserted between the third oil channel (46) and the first oil channel (41), and a fifth transition joint (58) is inserted between the fourth oil channel (59) and the second oil channel (43);
At the rear end of the extrusion piston (23), a third rock debris channel (33) of the extrusion rear end cover (24) is in butt joint with a second rock debris channel (31) of the extrusion piston (23), a port of a second cable channel (26) is connected with a first follow-up plunger (27), a port of a second signal line channel (64) is connected with a second follow-up plunger (65), a port of a third oil channel (46) is connected with a third follow-up plunger (47), a port of a fourth oil channel (59) is connected with a fourth follow-up plunger (60), and a port of a fifth oil channel (54) is connected with a fifth follow-up plunger (55).
2. The rock chip local compaction pressurizing compression mechanism according to claim 1, wherein a third rock chip channel (33), a third cable channel (28), a third signal line channel (66), a fourth signal line channel (72), a sixth oil line channel (48), a seventh oil line channel (61), an eighth oil line channel (56) and a ninth oil line channel (51) are arranged in the compaction rear end cover (24), the third rock chip channel (33) is communicated with the second rock chip channel (31) through a rock chip pipe (32), the fourth signal line channel (72) is communicated with a second mounting hole (71) of the compaction rear end cover (24), the ninth oil line channel (51) is communicated with the compaction cylinder rear cavity (50), a first follower plunger (27) is inserted in the third cable channel (28), a second follower plunger (65) is inserted in the third signal line channel (66), a third follower plunger (47) is inserted in the sixth oil line channel (48), a fourth follower plunger (60) is inserted in the seventh oil line channel (61), and a fifth follower plunger (55) is inserted in the eighth oil line channel (56).
3. The rock debris local compaction pressurizing compression mechanism according to claim 2, wherein the rear end of the compaction rear end cover (24) is provided with a rock debris interface (34), a cable interface (29), a first signal interface (67), a second signal interface (73), a first oil path interface (49), a second oil path interface (62), a third oil path interface (57) and a fourth oil path interface (52);
The rock chip interface (34) sequentially passes through the third rock chip channel (33), the rock chip pipe (32), the second rock chip channel (31), the first transition joint (30), the first rock chip channel (17), the inner cavity of the pressure head front end cover (2) and the plug rod through hole (15) to form a first penetrating channel; the cable interface (29) sequentially passes through the third cable channel (28), the first follow-up plunger (27), the second cable channel (26), the second transition joint (25), the first cable channel (18), the cable gland (10) and the cable release port (44) to form a second through channel; the first signal interface (67) sequentially passes through the third signal line channel (66), the second follow-up plunger (65), the second signal line channel (64), the third transition joint (63) and the first signal line channel (39) to form a third through channel; the second signal interface (73) is communicated with the second displacement sensor (68) through a fourth signal line channel (72) in sequence; the first oil way interface (49) is communicated with the front cavity (40) of the pressure head cylinder through a sixth oil way channel (48), a third follow-up plunger (47), a third oil way channel (46), a fourth transition joint (45) and the first oil way channel (41) in sequence to form a fourth penetrating channel; the second oil way interface (62) is communicated with the pressure head cylinder rear cavity (42) through a seventh oil way channel (61), a fourth follow-up plunger (60), a fourth oil way channel (59), a fifth transition joint (58) and a second oil way channel (43) in sequence to form a fifth through channel; the third oil way interface (57) is communicated with the extrusion cylinder front cavity (53) through an eighth oil way channel (56), a fifth follow-up plunger (55) and a fifth oil way channel (54) in sequence to form a sixth through channel; the fourth oil way interface (52) is communicated with the rear cavity (50) of the extrusion cylinder through a ninth oil way channel (51) in sequence to form a seventh penetrating channel.
4. A rock fragment partial compaction and pressurization compression mechanism according to claim 3, wherein the front cavity (40) of the ram cylinder is sealed and isolated from the rear cavity (42) of the ram cylinder, the front cavity (53) of the ram cylinder is sealed and isolated from the rear cavity (50) of the ram cylinder, and the head of the plug rod (3) is a flat head (75), a ball head (76), a step head (77), a conical head (78) or a bullet head (79).
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|---|---|---|---|---|
| EP0022865A1 (en) * | 1978-12-15 | 1981-01-28 | Furukawakogyo Co.Ltd | Hydraulically-driven downhole drill |
| CN203257327U (en) * | 2013-07-12 | 2013-10-30 | 中国石油大学(华东) | Threaded rod reversing underground hydraulic pressurizing well drilling device |
| CN210714467U (en) * | 2019-06-17 | 2020-06-09 | 中国石油天然气集团有限公司 | Rock debris local compaction pressurization compression mechanism |
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| CN102536121B (en) * | 2012-02-08 | 2013-12-18 | 中国石油大学(北京) | Pulse type underground pressurization jet flow drilling method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0022865A1 (en) * | 1978-12-15 | 1981-01-28 | Furukawakogyo Co.Ltd | Hydraulically-driven downhole drill |
| CN203257327U (en) * | 2013-07-12 | 2013-10-30 | 中国石油大学(华东) | Threaded rod reversing underground hydraulic pressurizing well drilling device |
| CN210714467U (en) * | 2019-06-17 | 2020-06-09 | 中国石油天然气集团有限公司 | Rock debris local compaction pressurization compression mechanism |
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