CN105201435A - Explosion releasing and releasing method for cable transportation clustering perforation operation - Google Patents
Explosion releasing and releasing method for cable transportation clustering perforation operation Download PDFInfo
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- CN105201435A CN105201435A CN201510596421.XA CN201510596421A CN105201435A CN 105201435 A CN105201435 A CN 105201435A CN 201510596421 A CN201510596421 A CN 201510596421A CN 105201435 A CN105201435 A CN 105201435A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004880 explosion Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 230000037452 priming Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005474 detonation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a cable transportation clustering perforation operation explosion releasing and releasing method, which comprises the following steps: a. sequentially connecting a fishing spear, a weighting device, a magnetic positioner, a conversion joint, an electromechanical release device, a multi-stage perforating gun string and a bridge plug tool, wherein the pipe string is connected with a cable and is lowered into a well; b. if the perforating gun string needs to be discarded when the perforating gun string is blocked in the construction process, an electric signal is sent to the selecting and sending block, a detonator and a detonating cord in the electromechanical releasing device are detonated, the weak point on the weak point explosion rod is exploded, well liquid enters an inner cavity of the electromechanical releasing device through a through hole in an explosion bypass, a piston rod is pushed to move downwards, the claw end of a releasing claw is recovered, and the releasing sleeve and the perforating gun string are released under the action of the self gravity of the pipe string or the external cable pulling force, so that the releasing and releasing are realized. The invention can increase the tension of the cable weak point, and can ensure that the weight of the cable and the tool string in the well is not less than the pressure load of the well mouth under the condition of releasing the clamp and releasing the hand, thereby ensuring the safety of the cable.
Description
Technical field
The present invention relates to a kind of cable transfer sub-clustering perforating job blast unfreezing to give up method, belong to conventional and unconventionaloil pool well development technical field.
Background technology
Sub-clustering perforating technology has been hidden in exploration and development at unconventionaloil pool and has been obtained sizable application, and this technique needs to carry out wellheadpressure operation, needs the weight increasing downhole pipe string during operation, ensures that pipe string can run by means of deadweight in straight well section.
Sub-clustering perforation is at the straight well of complex hole condition, in horizontal well operation process, the casing deformation of straight well on the one hand, or the formation sand production of pumpdown horizontal well, chemical sediment precipitation and shaft deformation, the reasons such as well track is irregular, when on the other hand cable sets bridging plug, weakness such as not to be slipped out of the hand at the factor, often can run into pipe string in operation and meet card phenomenon, pipe string cannot be tripped out in well, need to apply drag load by ground winch to cable cable is pulled from the weakness arranged, but due to wellheadpressure, once cable deadweight and well head pressure load imbalance, cable will be told outward fast under the effect of well head pressure, cause cable curling and generation is scrapped, even produce secondary engineering accident.In addition, the weakness pulling force arranging cable in perforating job is less than cable body pulling force, is unfavorable for that card accident is met in process down-hole.
Although prior art discloses some releasing devices, as China Patent Publication No. 204252892U discloses the dynamo-electric releasing device of a kind of cable transmission perforation, publication date is 2015-04-08, for another example China Patent Publication No. 204252891U discloses a kind of electromechanics and to give up device of escaping, publication date is 2015-04-08, but the problems referred to above still do not solve.
Summary of the invention
The object of the invention is to the problems referred to above overcoming the existence of existing sub-clustering perforating technology, a kind of cable transfer sub-clustering perforating job unfreezing of exploding is provided to give up method, the present invention can increase cable weakness pulling force, the weight that can ensure to go into the well the unfreezing situation of slipping out of the hand inner cable adds tool string is not less than well head pressure load and ensures cable security, under pipe string meets card situation, realize ground publish control, avoid secondary engineering accident.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of cable transfer sub-clustering perforating job blast unfreezing is given up method, it is characterized in that, comprises the steps:
A, connect fishing spear successively, increase the weight of, magnetic locator, crossover sub, dynamo-electric releasing device, multi-stage perforator rifle string and bridging plug instrument, the pipe string after connection is connected with cable, goes into the well;
If meet card in b work progress need lose perforating gun string, the signal of telecommunication is sent to publishing block, ignite the detonator in dynamo-electric releasing device and detonating fuse, weakness on weakness loading pole is blown up, well liquid enters dynamo-electric releasing device inner chamber by the through hole in blast bypass, promotes piston rod and moves downward, and the pawl end playing pawl of slipping out of the hand reclaims, sleeve of giving up is released under the effect of pipe string self gravitation or external cable pulling force together with perforating gun string, realizes unfreezing and gives up.
The present invention also comprises step c: realize after unfreezing gives up, arranging, carry out next step salvage according to construction.
Described dynamo-electric releasing device comprises blast bypass, slipping out of the hand plays pawl, bullet pawl overcoat, give up sleeve and relay pipe nipple, described blast bypass is provided with through hole, slip out of the hand play pawl one end with blast bypass be sealedly and fixedly connected, the sealing of bullet pawl overcoat being fixedly installed on to slip out of the hand and playing on pawl, sleeve of giving up is spacing is connected to the bullet pawl other end of slipping out of the hand, give up sleeve one end with play pawl overcoat and be sealed and matched, the other end and relay pipe nipple are sealedly and fixedly connected; Be provided with blast connectivity structure in blast bypass, slipping out of the hand to play in pawl is provided with solution card structure.
Described blast connectivity structure comprises publishes block, detonator, detonating fuse and weakness loading pole, publish block be connected with cable and be fixedly installed on weakness loading pole outer wall, detonating fuse is arranged in weakness loading pole endoporus, and detonating fuse is connected with detonator, detonator with publish block and be connected, weakness loading pole is arranged in blast bypass, weakness loading pole two ends coordinate with blast bypass inner wall sealing, on weakness loading pole, corresponding through hole is provided with weakness, when the weakness on weakness loading pole is blown up, well liquid enters weakness loading pole endoporus by the through hole in blast bypass.
Described solution card structure comprises the piston rod being arranged on and slipping out of the hand in bullet pawl, and before unfreezing, piston rod outer wall coordinates sleeve of giving up spacing with the pawl end playing pawl of slipping out of the hand; When well liquid enters weakness loading pole endoporus by the through hole in blast bypass, promote piston rod and move downward, the pawl end playing pawl of slipping out of the hand reclaims, and bullet pawl of slipping out of the hand is separated with sleeve of giving up.
Described piston rod one end is provided with sealed guide post, and sealed guide post is fixed in piston rod cavity by insulated enclosure plug, and the input of sealed guide post is connected with the output line publishing block, and the sealed guide post other end is connected to be published in block input line.
Described piston rod other end end is provided with the annular protrusion that the pawl end of slipping out of the hand bullet pawl is extended out, give up on sleeve lining and be provided with annular groove, before unfreezing, the pawl end playing pawl of slipping out of the hand is expanded outwardly by the annular protrusion on piston rod, is embedded in and gives up in the annular groove of sleeve; When the pawl end that piston rod moves downwardly to bullet pawl of slipping out of the hand is positioned at above annular protrusion, the pawl end recovery playing pawl of slipping out of the hand is separated with annular groove, and bullet pawl of slipping out of the hand is separated with sleeve of giving up.
Described blast bypass is annularly arranged four through holes, the corresponding through hole of weakness is arranged ringwise.
Employing the invention has the advantages that:
One, the present invention is detonated in the face of releasing tool powers to publish by ground, and the energy that priming system detonation is formed blows up weakness, and guide well liquid entering tool inner, realize hydraulic-driven and give up, cost is low.
Two, instant invention overcomes the weakness that the perforate of electronics fuse cutout needs dedicated ground power supply unit and fuse cutout, with existing instrument and equip compatible strong.
Three, the present invention can connect enough increasing the weight of, and realizes and well head pressure counterweight balance, and after preventing from slipping out of the hand, cable is curling.
Four, bullet pawl of slipping out of the hand in the present invention trips out well head with cable, and bullet pawl of giving up after domestic releasing device before overcoming drops in well the risk being unfavorable for salvaging.
Five, give up in the present invention to play more than pawl can to connect and increase the weight of, increase the weight of the shortcoming stayed in well before overcoming, compensate for pipe string and meet card and pipe string cannot be salvaged, reduce the economic loss increased the weight of.
Six, fishing socket of the present invention can be easy to salvaged instrument and catches, and applicability is strong, and milling operation pipe string can not rotate.
Seven, the present invention is applicable to cable transmission operation, and explosion energy is large, application hydraulic-driven, reliable in function of giving up.
Eight, the present invention is applicable to cable transmission sub-clustering perforation use, releasing tool wherein can be adapted to other cable transmission perforation operations in routine, unconventionaloil pool exploration and development process, this releasing method of giving up is safe and reliable, without the need to presetting weakness for cable of going into the well, enhance cable tensile strength, for high-tensile body is reserved in follow-up salvage, strong safety technics guarantee can be provided for cable transfer sub-clustering perforating job.
To sum up, the present invention combines firer and to explode principle, sub-clustering perforating job principle, adopt blast weakness, hydraulic drive and play the structural principle of pawl resilience, as the one-level that ground firing panel in cable transfer sub-clustering perforation pipe string also can control separately, card etc. can be met at pipe string in particular cases to start, realization is given up unfreezing, also lays a solid foundation for follow-up salvage simultaneously.
Accompanying drawing explanation
Fig. 1 is the pipe string syndeton schematic diagram in the present invention
Fig. 2 is the dynamo-electric releasing device structural representation in the present invention
Be labeled as in figure: 1, cable, 2, fishing spear, 3, increase the weight of, 4, magnetic locator, 5, crossover sub, 6, dynamo-electric releasing device, 7, multi-stage perforator rifle string, 8, bridging plug instrument, 9, publish block, 10, detonator, 11, detonating fuse, 12, weakness loading pole, 13, blast bypass, 14, sealed guide post, 15, bullet pawl of slipping out of the hand, 16, piston rod, 17, pawl overcoat is played, 18, sleeve of giving up, 19, relay pipe nipple.
Detailed description of the invention
embodiment 1
A kind of cable transfer sub-clustering perforating job blast unfreezing is given up method, comprises the steps:
A, connect fishing head 2 successively, increase the weight of 3, magnetic locator 4, crossover sub 5, dynamo-electric releasing device 6, multi-stage perforator rifle string 7 and bridging plug instrument 8, the pipe after connection was ganged up and was connected with cable 1, went into the well;
If meet card in b work progress need lose perforating gun string, the signal of telecommunication is sent to publishing block 9, ignite the detonator 10 in dynamo-electric releasing device 6 and detonating fuse 11, weakness on weakness loading pole 12 is blown up, well liquid enters dynamo-electric releasing device 6 inner chamber by the through hole in blast bypass 13, promotes piston rod 16 and moves downward, and the pawl end playing pawl 15 of slipping out of the hand reclaims, sleeve 18 of giving up is released under the effect of pipe string self gravitation or external cable pulling force together with perforating gun string, realizes unfreezing and gives up.
The present invention also comprises step c: realize after unfreezing gives up, arranging, carry out next step salvage according to construction.
In the present embodiment, described dynamo-electric releasing device 6 comprises blast bypass 13, slipping out of the hand plays pawl 15, bullet pawl overcoat 17, give up sleeve 18 and relay pipe nipple 19, described blast bypass 13 is provided with through hole, slip out of the hand play pawl 15 one end with blast bypass 13 be sealedly and fixedly connected, the sealing of bullet pawl overcoat 17 being fixedly installed on to slip out of the hand and playing on pawl 15, sleeve 18 of giving up is spacing is connected to bullet pawl 15 other end of slipping out of the hand, and sleeve 18 one end of giving up is sealed and matched with bullet pawl overcoat 17, and the other end and relay pipe nipple 19 are sealedly and fixedly connected; Be provided with blast connectivity structure in blast bypass 13, slipping out of the hand to play in pawl 15 is provided with solution card structure.
In the present embodiment, described blast connectivity structure comprises publishes block 9, detonator 10, detonating fuse 11 and weakness loading pole 12, the cable core of the input line and cable of publishing block 9 is connected and is fixedly installed on weakness loading pole 12 outer wall, detonating fuse 11 1 sections is arranged in weakness loading pole 12 endoporus, detonating fuse 11 exposes a section of weakness loading pole 12 endoporus and is connected with detonator 10, the wire of detonator 10 one end is connected with the detonator line publishing block 9, weakness loading pole 12 is arranged in blast bypass 13, weakness loading pole 12 two ends coordinate with blast bypass 13 inner wall sealing, on weakness loading pole 12, corresponding through hole is provided with weakness, when the weakness on weakness loading pole 12 is blown up, well liquid enters weakness loading pole 12 endoporus by the through hole in blast bypass 13.
In the present embodiment, described solution card structure comprises the piston rod 16 being arranged on and slipping out of the hand in bullet pawl 15, and before unfreezing, piston rod 16 outer wall coordinates sleeve 18 of giving up spacing with the pawl end playing pawl 15 of slipping out of the hand; When well liquid enters weakness loading pole 12 endoporus by the through hole in blast bypass 13, promote piston rod 16 and move downward, the pawl end playing pawl 15 of slipping out of the hand reclaims, and bullet pawl 15 of slipping out of the hand is separated with sleeve 18 of giving up.
In the present embodiment, described piston rod 16 one end is provided with sealed guide post 14, sealed guide post 14 is fixed in piston rod 16 inner chamber by insulated enclosure plug, the input of sealed guide post 14 is connected with the output line publishing block 9, sealed guide post 14 other end is connected to be published in block 9 input line, then enters the sub-clustering perforating job of multi-stage perforator rifle string.
In the present embodiment, described piston rod 16 other end end is provided with the annular protrusion that the pawl end of slipping out of the hand bullet pawl 15 is extended out, give up on sleeve 18 inwall and be provided with annular groove, before unfreezing, the pawl end playing pawl 15 of slipping out of the hand is expanded outwardly by the annular protrusion on piston rod 16, is embedded in and gives up in the annular groove of sleeve 18; When the pawl end that piston rod 16 moves downwardly to bullet pawl 15 of slipping out of the hand is positioned at above annular protrusion, the pawl end recovery playing pawl 15 of slipping out of the hand is separated with annular groove, and bullet pawl 15 of slipping out of the hand is separated with sleeve 18 of giving up.
In the present embodiment, described blast bypass 13 is annularly arranged four through holes, the corresponding through hole of weakness is arranged ringwise.
In the present embodiment, except dynamo-electric releasing device, miscellaneous equipment all can adopt prior art.
embodiment 2
As shown in Figure 2, its number of assembling steps of dynamo-electric releasing device in the present invention is: bullet pawl 15 one end of 1) slipping out of the hand is connected with blast bypass 13, and the other end is connected with bullet pawl overcoat 17; 2) sleeve 18 one end press-in of giving up plays pawl overcoat 17; 3) sealed guide post 14 is pressed in piston rod 16, involves two ends wire, then press-in gives up sleeve 18 until enter bullet pawl overcoat 17 inner chamber; 4) the relay pipe nipple 19 connected with first order perforating gun is connected; 5) connect and publish block 9 and detonator 10 and detonating fuse 11, then be connected with the lead-in wire of sealed guide post 14 one end, embed weakness loading pole 12, finally overallly load bypass 13 of exploding.
Unfreezing of exploding during cable transfer sub-clustering perforating job is given up concrete implementation step: 1) connect fishing spear 2 successively, increase the weight of 3, magnetic locator 4, crossover sub 5, dynamo-electric releasing device 6, multi-stage perforator rifle string 7, bridging plug instrument 8; 2) the pipe string after connecting is connected with cable 1, goes into the well.If meet card in work progress need lose perforating gun string, in the corresponding dynamo-electric releasing device of sub-clustering perforation ground IGNITION CONTROL panel, publish block 9 send the signal of telecommunication, detonating primer 10 and detonating fuse 11, on weakness loading pole 12, weakness is blown up, well liquid enters dynamo-electric releasing device inner chamber by the through hole in blast bypass 13, promote piston rod 16 to move downward, slip out of the hand and play the recovery of pawl 15 pawl end, sleeve 18 of giving up is released under the effect of pipe string self gravitation or external cable pulling force together with perforating gun string, realizes unfreezing and gives up.Arrange according to construction, carry out next step salvage.
embodiment 3
Dynamo-electric releasing device in the present invention comprises weakness loading pole 12, blast bypass 13, piston rod 16, insulated enclosure plug, slipping out of the hand plays pawl 15, give up sleeve 18 and rifle string jointing.
Weakness loading pole 12 designs annular weakness, through hole, the built-in priming system of weakness loading pole 12 and wire, priming system adopts screw spacing, weakness two ends design hermetically-sealed construction, through hole is between two hermetically-sealed constructions, it is inner that weakness loading pole 12 is placed in blast bypass 13, and weakness loading pole 12 has resistance to compression 105MPa function.
Blast bypass 13 annular design 4 through holes, annular weakness and lead to the hole site are just in time consistent, and box one end is connected with igniter head; Insulated enclosure plug has flexible piston rods 16 insulation function, can realize normal power supply, signal transfer functions, is arranged on flexible piston rods 16 upper end.Piston rod 16 upper end and insulated enclosure plug entirety possess sealing function, and the spacing bullet pawl of slipping out of the hand in lower end, intermediate throughholes penetrated wire, under hydraulic drive, can move down.
Slip out of the hand to play and pawl 15 designs 6-10 sheet have flexible bullet pawl, tensile strength reaches more than 10 tons, design sealing function, slips out of the hand to play pawl 15 and give up to have convex-concave between sleeve 18 and assemble, flexible piston rods 16 spacing under just in time realize pull transfer.
Sleeve 18 indoor design of giving up can hold the space of flexible piston rods 16 and wire, and lower end connects rifle string jointing, and rifle string jointing can be connected with sub-clustering perforating gun string; Bullet pawl 15 of slipping out of the hand mates with sleeve 18 of giving up and is connected, and slipping out of the hand, it is spacing to it by flexible piston rods 16 to play pawl 15, ensures that relay is reliable, has radial unbending.
Described dynamo-electric releasing device before startup blast unfreezing, there is sealing function and make well liquid can not entering tool inner, and there is pull transfer function and can not slip out of the hand in advance; Once pipe string meets card, surface power supply detonating primer, detonator detonation priming system, weakness loading pole is blown up by priming system energy, and well liquid enters weakness loading pole endoporus from the through hole of blast bypass, flexible piston rods and insulated enclosure plug entirety promote and fall into give up in sleeve downwards by hydraulic pressure, slip out of the hand and play the inner infinite place of pawl and convex position elasticity is recovered, depart from sleeve recess of giving up, upper portable cable, cable drives sleeve of giving up to be released together with perforating gun string, realizes unfreezing and gives up.
Claims (8)
1. cable transfer sub-clustering perforating job blast unfreezing is given up a method, it is characterized in that, comprises the steps:
A, connect fishing spear successively, increase the weight of, magnetic locator, crossover sub, dynamo-electric releasing device, multi-stage perforator rifle string and bridging plug instrument, the pipe string after connection is connected with cable, goes into the well;
If meet card in b work progress need lose perforating gun string, the signal of telecommunication is sent to publishing block, ignite the detonator in dynamo-electric releasing device and detonating fuse, weakness on weakness loading pole is blown up, well liquid enters dynamo-electric releasing device inner chamber by the through hole in blast bypass, promotes piston rod and moves downward, and the pawl end playing pawl of slipping out of the hand reclaims, sleeve of giving up is released under the effect of pipe string self gravitation or external cable pulling force together with perforating gun string, realizes unfreezing and gives up.
2. cable transfer sub-clustering perforating job according to claim 1 blast unfreezing is given up method, it is characterized in that, also comprises step c: realize after unfreezing gives up, arranging, carry out next step salvage according to construction.
3. cable transfer sub-clustering perforating job according to claim 1 and 2 blast unfreezing is given up method, it is characterized in that: described dynamo-electric releasing device comprises blast bypass (13), slip out of the hand and play pawl (15), play pawl overcoat, to give up sleeve (18) and relay pipe nipple (19), described blast bypass (13) is provided with through hole, slip out of the hand play pawl (15) one end with blast bypass (13) be sealedly and fixedly connected, the sealing of bullet pawl overcoat being fixedly installed on to slip out of the hand and playing on pawl (15), sleeve (18) of giving up is spacing is connected to bullet pawl (15) other end of slipping out of the hand, give up sleeve (18) one end with play pawl overcoat and be sealed and matched, the other end and relay pipe nipple (19) are sealedly and fixedly connected, be provided with blast connectivity structure in blast bypass (13), slipping out of the hand to play in pawl (15) is provided with solution card structure.
4. cable transfer sub-clustering perforating job according to claim 3 blast unfreezing is given up method, it is characterized in that: described blast connectivity structure comprises publishes block (9), detonator (10), detonating fuse (11) and weakness loading pole (12), publish block (9) be connected with cable and be fixedly installed on weakness loading pole (12) outer wall, detonating fuse (11) is arranged in weakness loading pole (12) endoporus, and detonating fuse (11) is connected with detonator (10), detonator (10) with publish block (9) and be connected, weakness loading pole (12) is arranged in blast bypass (13), weakness loading pole (12) two ends coordinate with blast bypass (13) inner wall sealing, the upper corresponding through hole of weakness loading pole (12) is provided with weakness, when the weakness on weakness loading pole (12) is blown up, well liquid enters weakness loading pole (12) endoporus by the through hole in blast bypass (13).
5. cable transfer sub-clustering perforating job according to claim 4 blast unfreezing is given up method, it is characterized in that: described solution card structure comprises the piston rod (16) being arranged on and slipping out of the hand in bullet pawl (15), before unfreezing, piston rod (16) outer wall coordinates sleeve (18) of giving up spacing with the pawl end playing pawl (15) of slipping out of the hand; When well liquid enters weakness loading pole (12) endoporus by the through hole in blast bypass (13), promote piston rod (16) and move downward, the pawl end playing pawl (15) of slipping out of the hand reclaims, and bullet pawl (15) of slipping out of the hand is separated with sleeve of giving up (18).
6. cable transfer sub-clustering perforating job according to claim 5 blast unfreezing is given up method, it is characterized in that: described piston rod (16) one end is provided with sealed guide post (14), sealed guide post (14) is fixed in piston rod (16) inner chamber by insulated enclosure plug, the input of sealed guide post (14) is connected with the output line publishing block (9), and sealed guide post (14) other end is connected to be published in block (9) input line.
7. cable transfer sub-clustering perforating job according to claim 6 blast unfreezing is given up method, it is characterized in that: described piston rod (16) other end end is provided with the annular protrusion that the pawl end of slipping out of the hand bullet pawl (15) is extended out, give up on sleeve (18) inwall and be provided with annular groove, before unfreezing, the pawl end playing pawl (15) of slipping out of the hand is expanded outwardly by the annular protrusion on piston rod (16), is embedded in the annular groove of sleeve of giving up (18); When the pawl end that piston rod (16) moves downwardly to bullet pawl (15) of slipping out of the hand is positioned at above annular protrusion, the pawl end recovery playing pawl (15) of slipping out of the hand is separated with annular groove, and bullet pawl (15) of slipping out of the hand is separated with sleeve of giving up (18).
8. cable transfer sub-clustering perforating job according to claim 7 blast unfreezing is given up method, and it is characterized in that: described blast bypass (13) annularly arranges four through holes, the corresponding through hole of weakness is arranged ringwise.
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| CN201510596421.XA CN105201435B (en) | 2015-09-18 | 2015-09-18 | Explosion releasing and releasing method for cable transportation clustering perforation operation |
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| CN201510596421.XA CN105201435B (en) | 2015-09-18 | 2015-09-18 | Explosion releasing and releasing method for cable transportation clustering perforation operation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109098678A (en) * | 2018-10-19 | 2018-12-28 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN109899013A (en) * | 2019-02-11 | 2019-06-18 | 中国石油天然气股份有限公司 | Sand jam prevention device and method for horizontal well cable transmission hydraulic pumping tool |
| CN112196476A (en) * | 2020-09-09 | 2021-01-08 | 中国石油天然气股份有限公司 | Horizontal well cable clustering perforating gun string safety release device |
| CN112576202A (en) * | 2020-12-14 | 2021-03-30 | 西安威尔格德能源技术有限公司 | Physical isolation release nipple joint for perforation tool string |
| CN112780204A (en) * | 2019-11-07 | 2021-05-11 | 中国石油天然气股份有限公司 | Releasing device and releasing method |
| CN114517653A (en) * | 2020-11-20 | 2022-05-20 | 中国石油化工股份有限公司 | Slotted pipe suspension device and composite leakage blocking method |
| CN118361215A (en) * | 2024-06-19 | 2024-07-19 | 西南石油大学 | Automatic cable-free type perforator of gun throwing |
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Effective date of registration: 20200915 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |