CN117365395A - TCP oil pipe conveying modularized unit perforating gun - Google Patents
TCP oil pipe conveying modularized unit perforating gun Download PDFInfo
- Publication number
- CN117365395A CN117365395A CN202311648809.0A CN202311648809A CN117365395A CN 117365395 A CN117365395 A CN 117365395A CN 202311648809 A CN202311648809 A CN 202311648809A CN 117365395 A CN117365395 A CN 117365395A
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- perforating
- joint
- perforating gun
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- 230000037237 body shape Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 239000002360 explosive Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 238000004880 explosion Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
Abstract
The invention provides a TCP oil pipe conveying modularized unit perforating gun, and belongs to the field of oilfield perforation. The problem that the connection between perforating guns of the existing perforating equipment is time-consuming and labor-consuming, and the integral loss is easy to cause in a series connection mode is solved. It includes a plurality of modules that arrange in order, end to end and structure are the same, and the module includes: the unit gun upper joint is in a hollow revolving body shape as a whole, one end of the unit gun upper joint is a closed end, the other end of the unit gun upper joint is an open end, and a centralizing pipe is coaxially arranged in the open end of the unit gun upper joint; a perforating gun body; the lower joint of the unit gun is arranged at the other end of the perforating gun body and seals the end, and each lower joint of the unit gun is clamped with the upper joint of the unit gun of the adjacent module; the explosion-transmitting bomb is arranged on the bomb frame and close to one end of the lower joint of the unit gun; and each detonating fuse is used for igniting the detonating fuse in the adjacent module centralizing tube after passing through the lower joint of the unit gun and the closed end of the upper joint of the adjacent module unit gun at the corresponding position after being exploded. It is mainly used for perforation of oil field.
Description
Technical Field
The invention belongs to the field of oilfield perforation, and particularly relates to a TCP oil pipe conveying modularized unit perforating gun.
Background
The traditional TCP oil pipe conveying perforation is the main well completion process technology of oil and gas wells of oil fields, and each oil field occupies more than half of perforation operation construction amount in China. The process is characterized in that a string of tubular columns is utilized to complete the perforation operation of all the intervals to be perforated of an oil-gas well. In the technological equipment, the perforating gun and the gun are connected in a screwed way through a middle joint, the perforating gun is connected in series to form a perforating operation pipe column, and then the perforating operation pipe column is conveyed to a geological interval to be perforated through an oil pipe to perform perforating operation. In operation, the perforating gun and gun string are completed by threading at the wellhead. The explosion propagation between guns of the whole perforating tube string is carried out by centralizing and butting detonating cords by centralizing tubes in inner holes of joints between two perforating guns. The perforating gun strings connected in series are communicated with each other, and the following problems exist in the operation of the perforating tubular column:
1. the perforating gun is connected with the gun at the wellhead by screwing through threads, the length of the connecting threads is about 30mm, and the self weight of the perforating gun is large, two operators are generally required to operate on a wellhead platform by using large pipe tongs, the perforating gun is required to be connected and assembled by screwing through threads by using tools such as pipe tongs, and the connecting and assembling process is time-consuming and labor-consuming. In addition, after perforation, the perforating gun is disassembled by screw threads, and the time and the labor are wasted. Therefore, the existing perforation process greatly influences the perforation operation aging due to the reason that threads are used for screwing and unscrewing, and the operation labor intensity is high. So that the work efficiency of the whole process is low.
2. In the aspect of construction quality accidents, due to product quality or illegal operation, the phenomenon of tight buckling between a gun body and a middle joint can happen occasionally, so that construction is stopped in the middle, and the working period is influenced.
3. In the perforating operation process, once explosion accidents occur due to various reasons, the perforating gun barrel strings of the existing perforating process device are communicated, and the perforated perforating gun can fill well liquid into the perforating gun which is not perforated through perforation holes, so that equipment such as non-detonated perforating charges, detonating cords and the like in the perforating gun are scrapped by water, and huge economic loss and construction period delay are caused.
To this end, a perforating gun is designed that can be quickly installed and connected, yet has cell independent characteristics to address these existing problems and process deficiencies.
Disclosure of Invention
In view of the above, the invention aims to provide a TCP oil pipe conveying modularized unit perforating gun, so as to solve the problems that the connection between perforating guns of the existing perforating equipment is time-consuming and labor-consuming, and the integral loss is easy to cause in the connection form of series connection.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a TCP tubing conveyed modular unit perforating gun comprising a plurality of sequentially disposed, end-to-end and structurally identical modules comprising:
the unit gun upper joint is in a hollow revolving body shape as a whole, one end of the unit gun upper joint is a closed end, the other end of the unit gun upper joint is an open end, and a centralizing pipe is coaxially arranged in the open end of the unit gun upper joint;
the perforating gun body is integrally hollow and rotary, one end of the perforating gun body is coaxially connected to the opening end of the upper joint of the unit gun, a bullet rack is coaxially arranged in the perforating gun body, and a plurality of perforating bullets are axially and alternately arranged on the bullet rack;
the lower unit gun connectors are arranged at the other end of the perforating gun body and seal the end, and each lower unit gun connector is clamped with the upper unit gun connector of the adjacent module;
the explosion-transmitting bomb is arranged on the bomb frame and close to one end of the lower joint of the unit gun;
one end of the detonating cord is inserted into the centralizing tube, the other end of the detonating cord is sequentially coupled with the detonating hole of each perforating bullet and then is connected with the detonating hole of the detonating bullet, and each detonating bullet is used for igniting the detonating cord in the centralizing tube of the adjacent module after penetrating through the lower joint of the unit gun and the closed end of the upper joint of the unit gun of the adjacent module at the corresponding position after being exploded;
the unit gun upper joint comprises an upper joint body, a first baffle plug, first arc-shaped bosses, a plugboard groove and a clamping groove, wherein the upper joint body is a hollow revolving body, the outer wall of the upper joint body is provided with a clamping part, a limiting part and a connecting part which are sequentially connected, the first baffle plug is arranged in an opening at one end of the clamping part, a plurality of first arc-shaped bosses are uniformly distributed on the circumference of the clamping part, at least two clamping grooves are uniformly distributed on the circumference of the end face of one side of the limiting part, which is close to the clamping part, the plugboard groove is formed in the circumference of the limiting part, and the connecting part is connected with a perforating gun body;
the bullet rack comprises an upper positioning disk, a bullet rack pipe and a lower positioning disk assembly which are sequentially connected, wherein the upper positioning disk and the lower positioning disk assembly are both connected with the inner wall of the perforating gun body, and the lower positioning disk assembly is used for accommodating the explosion-transmitting bullet;
the unit rifle lower clutch includes second baffle shutoff, safety card locking piece, second arc boss and lower clutch body, the lower clutch body sets up the second baffle shutoff for cavity solid of revolution and one side opening in, lower clutch body opposite side opening suits with the block portion of upper clutch body, lower clutch body keeps away from second baffle shutoff one side terminal surface and sets up a plurality of second arc bosses with first arc boss one-to-one, safety card locking piece be provided with a plurality of and set up with the draw-in groove one-to-one, every safety card locking piece passes through the torsional spring to be connected on lower clutch body keeps away from second baffle shutoff one side terminal surface, every safety card locking piece is used for the lower clutch body opposite side opening to block into corresponding draw-in groove when the block portion of upper clutch body matches.
Further, the connecting part is in threaded connection with the perforating gun body.
Further, a sealing ring is arranged between the upper joint body and the first partition board plug.
Further, the upper positioning disk is connected with the other end of the corresponding centralizing pipe.
Still further, lower locating plate assembly includes lower locating plate assembly body, pressing cable ware upper cap, bolt axle, spring and circlip, be provided with the holding chamber on the lower terminal surface of locating plate assembly body towards unit rifle lower connector one side down, be provided with the circlip on the holding chamber open end lateral wall, bolt axle one end is echelonment and sliding connection at the holding intracavity, the bolt axle other end links to each other with pressing cable ware upper cap, the spring cover is established on the bolt axle and both ends link to each other with holding chamber diapire, the big one end of bolt axle echelonment respectively, pressing cable ware upper cap pushes against on the lateral wall of lower locating plate assembly body one side of keeping away from the holding chamber when the spring is relaxed, the booster sets up in the holding intracavity between bolt axle and circlip, the bolt axle is used for pressing the one end of detonating cable on the hole of booster.
Furthermore, a sealing ring is arranged between the second baffle plate plug and the safety card locking block.
Furthermore, the number of the safety card locking blocks is two, and the sections of the safety card locking blocks are distributed in a splayed shape.
Compared with the prior art, the invention has the beneficial effects that:
1. when the perforation gun is independent of each other, once explosion breaking accidents occur, the undeployed modules can ensure integrity, liquid is not filled, equipment is not damaged, the whole perforation gun can be continuously used after being recycled, and due to the modularized design, the perforation gun can be reworked and produced again after simple adjustment, so that the misoperation and production loss caused by explosion breaking can be reduced to the minimum. Particularly, the loss of vulnerable parts such as perforating charges, detonating cords and the like can be basically reduced to zero, and the economic benefit is better;
2. the perforating gun has the advantages that the defect of the traditional threaded connection mode can be overcome through the mode of clamping connection between each module, the labor cost of assembly and disassembly is reduced, the connection of the perforating gun is quicker, simpler and more convenient during operation, the operation work efficiency is greatly improved, the labor intensity of operation workers is reduced, and the adaptability and the safety performance of the perforating gun to the working condition environment are also improved through the independent modules and the sealing structure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a half-sectional view of a module of a TCP tubing conveyed modular unit perforating gun of the present invention;
FIG. 2 is a half cross-sectional view of the top joint of the unit gun according to the invention;
FIG. 3 is a side view of the top sub of the unit gun of the present invention;
FIG. 4 is a schematic view of the structure of the spring frame according to the present invention;
FIG. 5 is a cross-sectional view of a lower puck assembly according to the present invention;
FIG. 6 is a cross-sectional view of a lower joint of a unit gun according to the invention;
FIG. 7 is a side view of the lower joint of the unit gun according to the invention;
fig. 8 is a connection state diagram of two modules according to the present invention.
A unit gun upper joint 1; an upper joint body 101; a first separator plug 102; a first arcuate boss 103; a card slot 104; a card slot 105; a righting tube 2; a perforating gun body 3; a spring frame 4; an upper puck 401; a spring holder tube 402; a lower puck assembly 403; lower puck assembly body 4031; a cable presser upper cap 4032; a peg 4033; a spring 4034; circlip 4035; a perforating charge 5; detonating cord 6; a booster bomb 7; a unit gun lower joint 8; a second separator plug 801; a security card lock 802; a second arcuate boss 803; a lower connector body 804.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
It should be noted that, the descriptions of the directions of "left", "right", "upper", "lower", "top", "bottom", and the like of the present invention are defined based on the relation of orientations or positions shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the structures must be constructed and operated in a specific orientation, and thus, the present invention should not be construed as being limited thereto. In the description of the present invention, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to the drawings for illustrating the embodiment, a TCP oil pipe conveying modularized unit perforating gun comprises a plurality of modules which are arranged in sequence, connected end to end and have the same structure, wherein the modules comprise:
the unit gun upper joint 1 is in a hollow revolving body shape as a whole, one end of the unit gun upper joint is a closed end, the other end of the unit gun upper joint is an open end, and a centralizing pipe 2 is coaxially arranged in the open end of the unit gun upper joint 1;
the perforating gun body 3 is integrally hollow and rotary, one end of the perforating gun body is coaxially connected to the opening end of the connector 1 on the unit gun, a bullet frame 4 is coaxially arranged in the perforating gun body 3, and a plurality of perforating bullets 5 are axially arranged on the bullet frame 4 at intervals;
a unit gun lower joint 8 arranged at the other end of the perforating gun body 3 and closing the end, wherein each unit gun lower joint 8 is clamped with the unit gun upper joint 1 of the adjacent module;
the booster bomb 7 is arranged at one end of the bomb frame 4 close to the lower joint 8 of the unit gun;
one end of the detonating cord 6 is inserted into the centralizing tube 2, the other end of the detonating cord 6 is sequentially coupled with the detonating hole of each perforating bullet 5 and then is connected with the detonating hole of the detonating bullet 7, and each detonating bullet 7 is used for igniting the detonating cord 6 in the centralizing tube 2 of the adjacent module after penetrating through the lower joint 8 of the unit gun and the closed end of the upper joint 1 of the unit gun of the corresponding position after being exploded. The assembly of each module can be finished in advance in an assembly workshop, and then the module is transported to a well site for operation and construction in a finished product form.
In this embodiment, unit rifle top connection 1 includes top connection body 101, first baffle shutoff 102, first arc boss 103, picture peg groove 104 and draw-in groove 105, top connection body 101 is cavity solid of revolution and outer wall for the joint portion, spacing portion and the connecting portion of connecting in order, be provided with first baffle shutoff 102 in the opening of joint portion one end, circumference equipartition sets up a plurality of first arc boss 103 on the joint portion perisporium, circumference equipartition sets up two at least draw-in grooves 105 on the spacing portion is close to joint portion one side terminal surface, set up picture peg groove 104 on the spacing portion perisporium, the connecting portion links to each other with perforating rifle body 3. The arrangement of the first partition plug 102 can help the upper joint body 101 form a closed end so that two adjacent modules are independent of each other and do not affect each other. And at the same time, the novel first baffle plug 102 can be repeatedly installed for use as a wearing part.
In this embodiment, the connection is threaded with the perforating gun body 3.
In this embodiment, a sealing ring is disposed between the upper joint body 101 and the first partition board plug 102. The sealing performance of connection is improved, and good isolation effect on adjacent modules can be guaranteed under the non-use state.
In this embodiment, the bullet rack 4 includes an upper positioning plate 401, a bullet rack tube 402 and a lower positioning plate assembly 403, which are sequentially connected, where the upper positioning plate 401 and the lower positioning plate assembly 403 are both connected to the inner wall of the perforating gun body 3, and the lower positioning plate assembly 403 is used to accommodate the booster bullet 7. The upper positioning disc 401 is the same as the upper positioning disc of a conventional bullet holder, and is provided with positioning keys which can position the phases of the bullet holders 4 and ensure the alignment of the perforating bullets 5 and blind holes on the perforating gun bodies. The carrier tube 402 is machined by laser cutting to the engineering design of the perforating gun.
In this embodiment, the upper positioning plate 401 is connected to the other end of the corresponding straightening tube 2. The upper positioning plate 401 can play a role in fixing the righting tube 2.
In this embodiment, the lower positioning disc assembly 403 includes a lower positioning disc assembly body 4031, an upper cap 4032 of the rope pressing device, a bolt shaft 4033, a spring 4034 and a circlip 4035, a receiving cavity is disposed on an end face of one side of the lower positioning disc assembly body 4031 facing the lower joint 8 of the unit gun, a circlip 4035 is disposed on a side wall of an opening end of the receiving cavity, one end of the bolt shaft 4033 is stepped and slidingly connected in the receiving cavity, the other end of the bolt shaft 4033 is connected with the upper cap 4032 of the rope pressing device, the spring 4034 is sleeved on the bolt shaft 4033, two ends of the spring 4034 are respectively connected with a bottom wall of the receiving cavity and a stepped larger end of the bolt shaft 4033, when the spring 4034 is relaxed, the upper cap 4032 of the rope pressing device is pushed against a side wall of one side of the lower positioning disc assembly body 4031, which is far away from the receiving cavity, the booster 7 is disposed in the receiving cavity between the bolt shaft 4033 and the circlip 4035, and the bolt shaft 4033 is used for pressing one end of the detonating rope 6 on the jack 7. The circlip 4035 is provided to limit the explosive charge 7. The specific installation method of the detonating primer 7 is that the upper cap 4032 of the detonating primer is lifted firstly, the bolt 4033 is lifted to vacate the space for inserting the detonating primer, the lower positioning disc assembly body 4031 is provided with an opening which is communicated with the accommodating cavity, so that the detonating primer can be smoothly inserted from the opening, then the upper cap 4032 of the detonating primer is loosened, the bolt 4033 falls under the rebound action of the spring 4034 to press the detonating primer 6, and the wire trunk of the detonating primer 6 is closely contacted with the detonating hole of the detonating primer 7. After the explosion-propagation bullet 7 and the detonating cord 6 are filled and installed, the perforating bullet is filled from one end of the lower positioning disc assembly 403, the specific filling of the perforating bullet is strictly carried out according to the perforation construction design number and the hole site, the centralizing tube 2 is finally installed at the end of the upper positioning disc 401, the length of the detonating cord 6 is cut and the explosion-propagation tube is installed, and the detonating tube is inserted into the inner hole of the centralizing tube and fixed by a jackscrew, so that the assembly of the perforating bullet frame assembly is completed. The bullet rack 4 is assembled well and is filled into the perforating gun body 3, the bullet rack 4 is rotated again to enable the positioning keys of the upper positioning disc 401 to fall into the key grooves in the upper port of the perforating gun body 3, and the bullet rack is stabilized so that the jet flow direction of each perforating bullet 5 is opposite to the blind hole outside the perforating gun body.
In this embodiment, the unit gun lower connector 8 includes a second partition board plug 801, a safety locking block 802, a second arc boss 803 and a lower connector body 804, the lower connector body 804 is a hollow revolving body, a second partition board plug 801 is disposed in an opening at one side of the lower connector body 804, an opening at the other side of the lower connector body 804 is adapted to a clamping portion of the upper connector body 101, a plurality of second arc bosses 803 corresponding to the first arc bosses 103 one to one are disposed on an end surface of the lower connector body 804, the safety locking block 802 is disposed in a plurality of second arc bosses 803 corresponding to the clamping grooves 105 one to one, each safety locking block 802 is connected to an end surface of the lower connector body 804, which is far away from the second partition board plug 801, through a torsion spring, and each safety locking block 802 is used for being clamped into a corresponding clamping groove 105 when an opening at the other side of the lower connector body 804 is matched with the clamping portion of the upper connector body 101. The setting of second baffle shutoff 801 can carry out effective isolation adjacent module, can guarantee again when the explosion of passing explosive cartridge 7, can pass behind first baffle shutoff 102 and the second baffle shutoff 801 and ignite the detonating cord 6 in the adjacent module righting tube 2 for the next module can carry out normal detonation perforation.
In this embodiment, a sealing ring is disposed between the second partition plug 801 and the safety catch block 802. The sealing performance of the second partition board plugging 801 and the safety card locking block 802 is improved, and effective isolation is ensured in a non-use state.
In this embodiment, the number of the safety card locking pieces 802 is two, the sections of the safety card locking pieces are distributed in a splayed shape, and the orientation of the opening at the large end of the splayed shape is the same as the orientation of the opening at the other side of the lower connector body 804, so that the safety card locking pieces 802 do not interfere in the process of inserting the upper connector 1 of the unit gun into the opening at the other side of the lower connector body 804, and the safety card locking pieces 802 can be blocked into the clamping groove 105 to form effective limit after the upper connector 1 of the unit gun rotates for 90 degrees.
When carrying out TCP perforation operation on the well, use special short instrument to go into the well head with first module, insert the picture peg in picture peg groove 104, lift the second module again, with the unit rifle top connection 1 of first module with the unit rifle sub-head 8 of second module just insert, insert lean on, specifically penetrate the block portion of unit rifle top connection 1 and first arc boss 103 from the space between each second arc boss 803 on the unit rifle sub-head 8 then with second module overall rotation 90 for every first arc boss 103 and every second arc boss 803 counterpoint articulates, every safety card locking piece 802 just blocks into the draw-in groove 105 of corresponding position this moment, can accomplish the connection work of two modules. The whole connection process is quick and convenient. And because the safety card locking piece 802 can continuously ensure stable connection with the clamping groove 105 under the action of the torsion spring, the condition of connection failure can not occur. The bearing capacity of the upper and lower connector hanging structure of the modularized unit gun can reach 50t, and the operation and construction requirements of longer perforating gun strings can be met. The hanging structure of the upper connector and the lower connector of the modularized unit gun is that the upper connector 1 of the unit gun is a male connector, and the lower connector 8 of the unit gun is a female connector.
After perforation, the perforating gun is disassembled simply and conveniently, when the upper module is lifted out of the wellhead, the perforating gun barrel column is fixed on the wellhead by inserting the inserting plate card into the inserting plate groove 104 of the next module, the safety clamping locking block 802 is pried up from the clamping groove 105 by using a special tool, the axial locking of the upper connector and the lower connector of the unit gun is released, the upper module is rotated by 90 degrees, the upper module is lifted, the two modules are separated from each other to complete the disassembly, and the whole perforating gun is sequentially operated to complete the disassembly. The connecting gun operation can be completed through one insertion and one rotation among the modules, so that the operation intensity is greatly reduced in labor force, and the work efficiency is improved by times compared with the original threaded connection mode.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (7)
1. A TCP tubing conveyed modular unit perforating gun comprising a plurality of sequentially disposed, end-to-end, and structurally identical modules comprising:
the unit gun upper joint (1) is in a hollow revolving body shape as a whole, one end of the unit gun upper joint is a closed end, the other end of the unit gun upper joint is an open end, and a centralizing pipe (2) is coaxially arranged in the open end of the unit gun upper joint (1);
the perforating gun body (3) is integrally hollow in a revolving body shape, one end of the perforating gun body is coaxially connected to the opening end of the upper joint (1) of the unit gun, a bullet frame (4) is coaxially arranged in the perforating gun body (3), and a plurality of perforating bullets (5) are axially arranged on the bullet frame (4) at intervals;
a unit gun lower joint (8) which is arranged at the other end of the perforating gun body (3) and seals the end, wherein each unit gun lower joint (8) is clamped with a unit gun upper joint (1) of an adjacent module;
the explosion-transmitting bomb (7) is arranged at one end, close to the lower joint (8) of the unit gun, of the bomb frame (4);
one end of the detonating cord (6) is inserted into the centralizing tube (2), the other end of the detonating cord is sequentially coupled with the detonating holes of each perforating bullet (5) and then is connected with the detonating holes of the detonating bullet (7), and each detonating bullet (7) is used for igniting the detonating cord (6) in the centralizing tube (2) of the adjacent module after penetrating through the lower joint (8) of the unit gun and the closed end of the upper joint (1) of the unit gun of the adjacent module after being exploded;
the unit gun upper joint (1) comprises an upper joint body (101), a first baffle plug (102), first arc-shaped bosses (103), a plugboard groove (104) and a clamping groove (105), wherein the upper joint body (101) is a hollow revolving body, the outer wall of the upper joint body is a clamping part, a limiting part and a connecting part which are sequentially connected, the first baffle plug (102) is arranged in an opening at one end of the clamping part, a plurality of first arc-shaped bosses (103) are uniformly distributed on the circumference of the clamping part, at least two clamping grooves (105) are uniformly distributed on the circumference of the end face of the limiting part, which is close to one side of the clamping part, of the limiting part, the plugboard groove (104) is formed in the circumference of the limiting part, and the connecting part is connected with the perforating gun body (3);
the bullet rack (4) comprises an upper positioning disc (401), a bullet rack tube (402) and a lower positioning disc assembly (403) which are sequentially connected, wherein the upper positioning disc (401) and the lower positioning disc assembly (403) are connected with the inner wall of the perforating gun body (3), and the lower positioning disc assembly (403) is used for accommodating the explosion-transmitting bullet (7);
the utility model provides a unit rifle lower clutch (8) includes second baffle shutoff (801), safety card locking piece (802), second arc boss (803) and lower clutch body (804), set up second baffle shutoff (801) in lower clutch body (804) are cavity solid of revolution and one side opening, lower clutch body (804) opposite side opening suits with the block portion of upper clutch body (101), lower clutch body (804) keep away from second baffle shutoff (801) one side terminal surface set up a plurality of second arc boss (803) with first arc boss (103) one-to-one, safety card locking piece (802) are provided with a plurality of and set up with draw-in groove (105) one-to-one, every safety card locking piece (802) are connected on lower clutch body (804) keep away from second baffle shutoff (801) one side terminal surface through the torsional spring, every safety card locking piece (802) are used for in lower clutch body (804) opposite side opening and block portion cooperation time block into corresponding draw-in groove (105) of upper clutch body (101).
2. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: the connecting part is in threaded connection with the perforating gun body (3).
3. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: a sealing ring is arranged between the upper joint body (101) and the first partition board plug (102).
4. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: the upper positioning disc (401) is connected with the other end of the corresponding centralizing tube (2).
5. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: the lower positioning disk assembly (403) comprises a lower positioning disk assembly body (4031), an upper rope pressing device cap (4032), a bolt shaft (4033), a spring (4034) and an elastic retainer ring (4035), wherein a containing cavity is formed in one side end face of the lower positioning disk assembly body (4031) towards a lower unit gun joint (8), the elastic retainer ring (4035) is arranged on the side wall of the opening end of the containing cavity, one end of the bolt shaft (4033) is in a stepped shape and is in sliding connection in the containing cavity, the other end of the bolt shaft (4033) is connected with the upper rope pressing device cap (4032), the spring (4034) is sleeved on the bolt shaft (4033) and two ends of the spring are respectively connected with the bottom wall of the containing cavity and the stepped larger end of the bolt shaft (4033), the upper rope pressing device cap (4032) pushes against the side wall of one side of the lower positioning disk assembly body (4031) away from the containing cavity when the spring (4034) is released, and the elastic carrier (7) is arranged between the bolt shaft (4033) and the elastic retainer ring (4032) and is used for pressing the explosive carrier hole (6) in the explosive carrier hole (4033).
6. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: and a sealing ring is arranged between the second partition board plug (801) and the safety clamping locking block (802).
7. A TCP tubing conveyed modular unit perforating gun as recited in claim 1, wherein: the number of the safety card locking blocks (802) is two, and the sections of the safety card locking blocks are distributed in a splayed mode.
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| CN202311648809.0A CN117365395B (en) | 2023-12-05 | 2023-12-05 | TCP oil pipe conveying modularized unit perforating gun |
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| CN202311648809.0A CN117365395B (en) | 2023-12-05 | 2023-12-05 | TCP oil pipe conveying modularized unit perforating gun |
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| CN117365395B CN117365395B (en) | 2024-03-08 |
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