CN215718654U - Tail control short joint device for combined operation of bridge plug setting and perforation of oil and gas well - Google Patents
Tail control short joint device for combined operation of bridge plug setting and perforation of oil and gas well Download PDFInfo
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- CN215718654U CN215718654U CN202121586076.9U CN202121586076U CN215718654U CN 215718654 U CN215718654 U CN 215718654U CN 202121586076 U CN202121586076 U CN 202121586076U CN 215718654 U CN215718654 U CN 215718654U
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Abstract
The utility model discloses a tail control pup joint device for the combined operation of bridge plug setting and perforation of an oil-gas well, which mainly solves the problems of complex operation and assembly and high cost of the traditional tail control pup joint. The method comprises the following steps: the outer shell, the setting tool igniter assembly and the setting tool matching adapter are arranged on the outer shell; wherein, the outer shell is provided with a double-path cartridge clip connector, a double-path explosion-proof module, a tail control unit fixing body, a tail control unit and a single-path explosion-proof module, and the middle position of the outer shell is provided with a pressing cap screw; the right-hand member of shell body matches the connector with the seat instrument and is connected, the left end is equipped with the connector that matches with the device outside perforating gun barrel to realize linking up between first order perforating gun and the bridging plug seat instrument. The tail control selective firing control circuit is combined with the intermediate joint to complete bridge plug setting and detonation operation of the first-stage perforating gun, high pressure generated during detonation is isolated, later-stage maintenance is facilitated, and installation and operation are simple; the method can effectively improve the operation efficiency and reduce the operation cost in oil and gas exploitation.
Description
Technical Field
The utility model belongs to the technical field of oil and gas exploitation, and further relates to intelligent control over a bridge plug and a perforation, in particular to a tail control pup joint device for the combined action of bridge plug setting and perforation of an oil and gas well, which can be used for the operation of bridge plug setting and perforation in a well.
Background
In the oil and gas exploitation process, usually, after drilling, a casing is put in, cement is injected for well cementation, and after well cementation, a connecting passage between an oil and gas reservoir and the casing is opened through perforation and fracturing operations. The combination of the bridge plug and the perforation is the most widely used perforation completion mode for the development of unconventional oil and gas reservoirs, and the single well yield can be effectively improved.
The perforating string, typically carrying a plurality of perforating guns, is lowered into the cased hole to a location where one or more hydrocarbon reservoirs in the subterranean formation reside. The perforating gun is internally provided with the shaped perforating bullet, and the shaped perforating bullet can sequentially penetrate through a perforating gun barrel, a sleeve and a cement pouring layer after being detonated, so that hydrocarbon can flow into the sleeve. Once the gun reaches the specified location, the surface instrumentation issues an ignition signal, the kill-switch initiates the detonator within the gun, and in turn, the detonating cord, which detonates the shaped charge to pierce the barrel, casing, and cement layer, thereby allowing formation fluids to flow into the production string.
At present, a bridge plug setting tool is generally connected to the lower end of a first-stage gun and is divided into a gunpowder setting tool and an electric setting tool, and the gunpowder setting tool needs a selective ignition switch to ignite a slow-burning gunpowder after an igniter is fired; the electric setting tool needs a selective switch to provide continuous electric energy. Two selective firing switches can be installed in a bullet rack of a traditional bridge plug setting and perforation combined tool string first gun: one is used for setting and bridging, and the other is used for detonating a detonator for perforation. The assembly of the perforating gun further requires multiple parts, typically including at least the barrel, the carrier, the wired detonator, the fuse, the shaped charge, the trigger switch, the intermediate sub, and the pressure-bearing line guide. At least two wires need to be manually connected between the wired detonator and the selective-sending switch, the selective-sending switch and the bullet rack, the pressure-bearing wire passing device or other selective-sending switches also need to be connected through the wires, and the field manual wiring workload is huge. The existing disadvantages are that: the assembly parts are more, the field device installation process is complicated, the control circuit is positioned in the perforating gun and is easy to damage, and the middle joint is long in length and heavy in weight.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a tail control pup joint device for the combined action of bridge plug setting and perforation of an oil-gas well. The device combines a tail control selective firing control circuit with an intermediate joint, realizes the connection between a first-stage perforating gun and a bridge plug setting tool, can complete the detonation operation of bridge plug setting and the first-stage perforating gun, and isolates high-pressure impact generated when the bridge plug setting and the perforating gun are detonated and static pressure of high-pressure liquid at the bottom of a well; therefore, compared with the prior art, the device has the advantages that the connecting part and the installation operation are simplified, the device is convenient to maintain and low in cost, and meanwhile, the structural improvement has a protection effect on the control circuit, the detonating perforating detonator and the igniter.
To achieve the above object, the present invention comprises: the device comprises a double-circuit cartridge clip connector 1, a double-circuit explosion-proof module 3, an outer shell 4, a tail control unit fixing body 6, a tail control unit 7, a single-circuit explosion-proof module 9, a cap pressing screw 10, a setting tool igniter assembly 11 and a setting tool matching adapter 12;
inner holes at the left end and the right end of the outer shell 4 are provided with three-stage inner steps; the right end of the outer shell 4 is connected with a setting tool matching adapter 12, and the left end is provided with a connecting port matched with a perforating gun barrel outside the device; a cap pressing screw 10 is arranged at the middle position of the outer shell 4 from outside to inside;
the tail control unit 7 is fixed in the tail control unit fixing body 6; the tail control unit fixing body 6 comprises a single-core alloy elastic jack, a double-core alloy elastic jack, a selective control unit fixing groove, an alloy bracket, an insulating sleeve A8 and an insulating sleeve B5; the tail control unit fixing body 6 is provided with three stages of outer steps, and the outer step with the largest outer diameter of the tail control unit fixing body 6 is matched with the inner step with the deepest left side of the outer shell 4; wherein the first-stage outer step is the thinnest, an insulating sleeve A8 is embedded in the first-stage outer step, and a single-core alloy elastic jack is wrapped in the insulating sleeve A8; the outer layer of the middle first-stage outer step is an external thread of M18, and the second-stage outer step is a selective control unit fixing groove; the third-stage outer step is thickest, an insulating sleeve B5 is embedded in the third-stage outer step, and a twin-core alloy elastic jack is wrapped in the insulating sleeve B5; is limited in the outer shell 4; the thin end of the tail control unit fixing body 6 is inserted into the outer shell 4 and locked by a fastening nut;
the double-circuit explosion-proof module 3 is a double-core high-temperature and high-pressure resistant sealed connector and is arranged in a second-stage inner step at the left end of the outer shell 4, and a double-core contact pin at the right end of the double-circuit explosion-proof module 3 is inserted into the double-core alloy elastic jack;
the double-circuit cartridge clip connector 1 comprises a thin-core high-temperature wire, a thick-core high-temperature wire, an alloy shell B and an insulating sleeve D2, and the double-circuit cartridge clip connector 1 is arranged in a first-stage inner step at the left end of the outer shell 4 and is positioned at the right end of a first-stage cartridge frame; wherein the thin-core high-temperature lead is connected with a through wire in the cartridge clip, and the thick-core high-temperature lead is connected with a detonating wire of the detonator;
the single-path explosion-proof module 9 is a single-core high-temperature and high-pressure resistant sealed connector and is arranged in a second-stage inner step at the right end of the outer shell 4, and a single-core contact pin at the left end of the single-path explosion-proof module 9 is inserted into a single-core alloy elastic jack;
the igniter assembly 11 of the setting tool comprises a metal shell, an insulating sheath and a conductive spring thimble, the igniter assembly 11 of the setting tool is installed in the matching adapter 12 of the setting tool and is located at the left end of the setting tool, and the left end of the conductive spring thimble is closely matched with the right end of the one-way explosion-proof module 9 and used for transmitting a detonation signal to the setting tool.
Further, the single-path explosion-proof module 9 and the double-path explosion-proof module 3 are processed by a sintering process.
Further, the tail control unit 7 is a tail control selective firing control circuit integrated by two intelligent selective firing switches, and is used for realizing bridge plug setting and detonation operation of a first-stage perforating gun; the input end of the tail control selective-sending control circuit is connected to the thin core of the double-core alloy elastic jack, and the thick core of the double-core alloy elastic jack is connected with the detonator initiation output end; the output end of which is connected to the pogo pin of the setting tool igniter assembly 11.
Further, the double-circuit cartridge clip connector 1 is arranged in a first-stage inner step at the left end of the outer shell 4, is screwed and fixed on a cartridge carrier through threads, and is connected to the double-circuit explosion-proof module 3 along with the screwing operation of a perforating gun barrel and the outer shell;
furthermore, the single-core alloy elastic jack is sleeved on a right-end contact pin of the single-path explosion-proof module 9, and the double-core alloy elastic jack is sleeved on a left-end contact pin of the double-path explosion-proof module 3, which are realized in the screwing process of threads;
further, the right end of the outer shell 4 is connected with a setting tool matching adapter 12 in a threaded connection mode;
further, the cap pressing screw 10 is an access hole and is normally in a closed state; when the internal maintenance is needed, the tail control unit 7 is exposed by the opening device.
Compared with the prior art, the utility model has the following advantages:
firstly, the tail control short section provided by the utility model can be repeatedly used after being simply maintained, so that the oil and gas exploitation cost is reduced, and the operation time is saved;
secondly, the tail control and selective firing control circuit is combined with the intermediate joint, the circuit integrates two functions of bridge plug setting control and perforating gun detonation, the bridge plug setting and the first-stage perforating gun detonation operation can be completed, and the first-stage perforating gun is connected with a bridge plug setting tool by combining with the intermediate joint, so that the first-stage perforating gun and the bridge plug setting tool are connected more simply and conveniently;
thirdly, the double-core pressure-bearing explosion-proof module is designed in the device, so that high-pressure impact generated when the perforating gun is detonated and static pressure of high-pressure liquid at the bottom of a well can be isolated, and a tail control selective firing control circuit, a detonating perforating detonator and an igniter are protected from being damaged easily due to high pressure;
fourthly, the device adopts the gold-plated copper crown spring nests with different outer diameters as the connection mode of the double-core connector, thereby effectively avoiding a plurality of faults caused by wiring between rotating parts, being convenient for field installation and use and reducing the dependence of construction links on manual operation proficiency;
fifth, because the intermediate joint is optimally designed, compared with the traditional joint, the utility model does not need an external thread sliding sleeve structure, and a tail control selecting and sending circuit installation bin, a pressure-bearing explosion-proof module fixing position and the like are integrated in the intermediate joint, so that the connection length between the perforating gun and the bridge plug setting tool is shortened, the weight of the joint is reduced, and the utility model has the characteristics of convenience for later maintenance and simplicity and convenience in construction operation.
Drawings
FIG. 1 is a schematic axial sectional view of the present invention;
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a specific structure of a tail control short section device for bridge launching combined operation of an oil and gas well, and the device specifically comprises: the device comprises a double-circuit cartridge clip connector 1, a double-circuit explosion-proof module 3, an outer shell 4, a tail control unit fixing body 6, a tail control unit 7, a single-circuit explosion-proof module 9, a cap pressing screw 10, a setting tool igniter assembly 11 and a setting tool matching adapter 12;
inner holes at the left end and the right end of the outer shell 4 are provided with three-stage inner steps; the right end of the outer shell 4 is connected with a setting tool matching adapter 12, and the left end is provided with a connecting port matched with a perforating gun barrel outside the device; the middle position of the outer shell 4 is provided with a pressing cap screw 10 from outside to inside, the pressing cap screw is an access hole and is normally in a closed state, and when internal maintenance is needed, the screw is opened, so that the opening device exposes the tail control unit 7, and the maintenance of an internal circuit is realized. The right end of the outer shell 4 is connected with a setting tool matching adapter 12, and the embodiment preferably adopts a threaded connection mode, and can also adopt other screwing and fixing modes.
The tail control unit 7 is fixed in the tail control unit fixing body 6; the tail control unit fixing body 6 comprises a single-core alloy elastic jack, a double-core alloy elastic jack, a selective control unit fixing groove, an alloy bracket, an insulating sleeve A8 and an insulating sleeve B5; the tail control unit fixing body 6 is provided with three stages of outer steps, and the outer step with the largest outer diameter of the tail control unit fixing body 6 is matched with the inner step with the deepest left side of the outer shell 4; wherein the first-stage outer step is the thinnest, an insulating sleeve A8 is embedded in the first-stage outer step, and a single-core alloy elastic jack is wrapped in the insulating sleeve A8; the outer layer of the middle first-stage outer step is an external thread of M18, and the second-stage outer step is a selective control unit fixing groove; the third-stage outer step is thickest, an insulating sleeve B5 is embedded in the third-stage outer step, and a twin-core alloy elastic jack is wrapped in the insulating sleeve B5; is limited in the outer shell 4; the thin end of the tail control unit fixing body 6 is inserted into the outer shell 4 and locked by using a fastening nut. In this embodiment, the tail control unit 7 adopts a tail control selective firing control circuit integrated by two intelligent selective firing switches, which is used for realizing bridge plug setting and detonation operation of the first-stage perforating gun, and of course, other integrated circuits can be used to realize the function; connecting the input end of the tail control selective-sending control circuit to the thin core of the double-core alloy elastic jack, and connecting the detonation output end of the detonator to the thick core of the double-core alloy elastic jack; the output of the tail control and selection control circuit is connected to the pogo pin of the setting tool igniter assembly 11.
The double-circuit explosion-proof module 3 is a double-core high-temperature-resistant high-pressure-sealed connector and is arranged in the second-stage inner step at the left end of the outer shell 4, and a double-core contact pin at the right end of the double-circuit explosion-proof module 3 is inserted into the double-core alloy elastic jack and is realized in the screwing process of threads.
The double-circuit cartridge clip connector 1 comprises a thin-core high-temperature wire, a thick-core high-temperature wire, an alloy shell B and an insulating sleeve D2, and the double-circuit cartridge clip connector 1 is installed in a first-stage inner step at the left end of an outer shell 4, is screwed and fixed on a cartridge frame through threads, and is connected to the double-circuit explosion-proof module 3 along with the screwing operation of a perforating gun barrel and the outer shell; and it is located at the right end of the first-stage bullet rack; wherein the thin-core high-temperature lead is connected with a through wire in the cartridge clip, and the thick-core high-temperature lead is connected with a detonating wire of the detonator.
The one-way explosion-proof module 9 is a single-core high-temperature and high-pressure resistant sealed connector and is arranged in a second-level inner step at the right end of the outer shell 4, and a single-core contact pin at the left end of the one-way explosion-proof module 9 is inserted into a single-core alloy elastic jack and is realized in the screwing process of threads.
The single-path explosion-proof module 9 and the double-path explosion-proof module 3 are processed by a sintering process.
The igniter assembly 11 of the setting tool comprises a metal shell, an insulating sheath and a conductive spring thimble, the igniter assembly 11 of the setting tool is installed in the matching adapter 12 of the setting tool and is located at the left end of the setting tool, and the left end of the conductive spring thimble is closely matched with the right end of the one-way explosion-proof module 9 and used for transmitting a detonation signal to the setting tool.
The device leads the input end of a tail control selective-sending control circuit and the detonation output end of a detonator out of the left end of a middle joint, the input end of the tail control selective-sending control circuit is connected to a thin core of a double-core jack, the detonation output end of the detonator is connected to a thick core of the double-core jack, the electric energy output end of a bridge plug setting tool of the tail control selective-sending control circuit is led out of the right end of the middle joint, the electric energy output end of the bridge plug setting tool of the tail control selective-sending control circuit is connected to a spring thimble of an igniter assembly 11 of the setting tool, the thin core of the double-core jack and the core of a single-core jack both adopt a conductive ring spring jack of 3mm, and the thick core of the double-core jack adopts a crown spring jack of 10 mm. The left end of the intermediate joint realizes the leading-out and high-voltage isolation of the line by using a double-core pressure-bearing wire passing module, and the left end of the intermediate joint realizes the leading-out and high-voltage isolation of the line by using a single-core pressure-bearing wire passing module; the circuit led out from the left end is connected with a double-core bullet rack connector, and the output end of the double-core bullet rack connector is connected with a lead in a detonator bullet rack; the setting tool matching adapter 12 is connected with the setting tool. The functions of connecting the first-stage perforating gun and the bridge plug setting tool, isolating high-pressure impact generated during bridge plug setting and static pressure of high-pressure liquid at the bottom of a well, protecting and protecting the selective firing control circuit, the detonating perforating detonator and the igniter are realized. The device is convenient for later maintenance, installation easy operation, and the cost is lower, can effectively promote the operating efficiency in the practical application of oil gas exploitation, reduces the operating cost.
The utility model has not been described in detail in part of the common general knowledge of those skilled in the art.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (9)
1. The utility model provides a tail accuse nipple joint device that is used for oil gas well bridge plug to set up and carries out with perforation antithetical couplet, its characterized in that includes: the device comprises a double-circuit cartridge clip connector (1), a double-circuit explosion-proof module (3), an outer shell (4), a tail control unit fixing body (6), a tail control unit (7), a single-circuit explosion-proof module (9), a cap pressing screw (10), a setting tool igniter assembly (11) and a setting tool matching adapter (12);
inner holes at the left end and the right end of the outer shell (4) are provided with three-stage inner steps; the right end of the outer shell (4) is connected with a setting tool matching adapter (12), and the left end of the outer shell is provided with a connecting port matched with a gun barrel of a perforating gun outside the device; a cap pressing screw (10) is arranged at the middle position of the outer shell (4) from outside to inside;
the tail control unit (7) is fixed in the tail control unit fixing body (6); the tail control unit fixing body (6) comprises a single-core alloy elastic jack, a double-core alloy elastic jack, a selective control unit fixing groove, an alloy support, an insulating sleeve A (8) and an insulating sleeve B (5); the tail control unit fixing body (6) is provided with three stages of outer steps, and the outer step with the largest outer diameter of the tail control unit fixing body (6) is matched with the inner step with the deepest stage on the left side of the outer shell (4); wherein the first-stage outer step is the thinnest, an insulating sleeve A (8) is embedded in the first-stage outer step, and a single-core alloy elastic jack is wrapped in the insulating sleeve A (8); the outer layer of the middle first-stage outer step is an external thread of M18, and the second-stage outer step is a selective control unit fixing groove; the third-stage outer step is thickest, an insulating sleeve B (5) is embedded in the third-stage outer step, and a double-core alloy elastic jack is wrapped in the insulating sleeve B (5); is limited in the outer shell (4); the thin end of the tail control unit fixing body (6) is inserted into the outer shell (4) and locked by a fastening nut;
the double-circuit explosion-proof module (3) is a double-core high-temperature and high-pressure resistant sealed connector and is arranged in a second-stage inner step at the left end of the outer shell (4), and a double-core contact pin at the right end of the double-circuit explosion-proof module (3) is inserted into the double-core alloy elastic jack;
the double-circuit cartridge clip connector (1) comprises a thin-core high-temperature wire, a thick-core high-temperature wire, an alloy shell B and an insulating sleeve D (2), and the double-circuit cartridge clip connector (1) is arranged in a first-stage inner step at the left end of the outer shell (4) and is positioned at the right end of the first-stage cartridge frame; wherein the thin-core high-temperature lead is connected with a through wire in the cartridge clip, and the thick-core high-temperature lead is connected with a detonating wire of the detonator;
the single-path explosion-proof module (9) is a single-core high-temperature and high-pressure resistant sealed connector and is arranged in a second-stage inner step at the right end of the outer shell (4), and a single-core contact pin at the left end of the single-path explosion-proof module (9) is inserted into the single-core alloy elastic jack;
the igniter assembly (11) of the setting tool comprises a metal shell, an insulating sheath and a conductive spring thimble, the igniter assembly (11) of the setting tool is installed in a matching adapter (12) of the setting tool and is located at the left end of the setting tool, and the left end of the conductive spring thimble is closely matched with the right end of the one-way explosion-proof module (9) and used for transmitting a detonation signal to the setting tool.
2. The apparatus of claim 1, wherein: the single-path explosion-proof module (9) and the double-path explosion-proof module (3) are processed by a sintering process.
3. The apparatus of claim 1, wherein: the tail control unit (7) is a tail control selective firing control circuit integrated by two intelligent selective firing switches and used for realizing bridge plug setting and detonation operation of the first-stage perforating gun.
4. The apparatus of claim 3, wherein: the input end of the tail control selective-sending control circuit is connected to the thin core of the double-core alloy elastic jack, and the thick core of the double-core alloy elastic jack is connected with the detonator initiation output end; the output end of the spring is connected to the conductive spring thimble of the setting tool igniter assembly (11).
5. The apparatus of claim 1, wherein: the double-circuit cartridge clip connector (1) is arranged in a first-stage inner step at the left end of the outer shell (4), is screwed and fixed on the cartridge frame through threads, and is connected to the double-circuit explosion-proof module (3) along with the screwing operation of a perforating gun barrel and the outer shell.
6. The apparatus of claim 1, wherein: the single-core alloy elastic jack is sleeved on a right end contact pin of the single-path explosion-proof module (9) and is realized in the screwing process of the thread.
7. The apparatus of claim 1, wherein: the double-core alloy elastic jack is sleeved on a left-end contact pin of the double-circuit explosion-proof module (3) and is realized in the screwing process of threads.
8. The apparatus of claim 1, wherein: the right end of the outer shell (4) is connected with a setting tool matching adapter (12) in a threaded connection mode.
9. The apparatus of claim 1, wherein: the cap pressing screw (10) is an access hole and is normally in a closed state; when the interior needs to be overhauled, the tail control unit (7) is exposed when the device is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121586076.9U CN215718654U (en) | 2021-07-13 | 2021-07-13 | Tail control short joint device for combined operation of bridge plug setting and perforation of oil and gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121586076.9U CN215718654U (en) | 2021-07-13 | 2021-07-13 | Tail control short joint device for combined operation of bridge plug setting and perforation of oil and gas well |
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| Publication Number | Publication Date |
|---|---|
| CN215718654U true CN215718654U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121586076.9U Active CN215718654U (en) | 2021-07-13 | 2021-07-13 | Tail control short joint device for combined operation of bridge plug setting and perforation of oil and gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215718654U (en) |
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2021
- 2021-07-13 CN CN202121586076.9U patent/CN215718654U/en active Active
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