CN210033359U - Lower catcher and blowout preventer comprising same - Google Patents
Lower catcher and blowout preventer comprising same Download PDFInfo
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- CN210033359U CN210033359U CN201920916419.XU CN201920916419U CN210033359U CN 210033359 U CN210033359 U CN 210033359U CN 201920916419 U CN201920916419 U CN 201920916419U CN 210033359 U CN210033359 U CN 210033359U
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- blowout preventer
- pressure
- catcher
- assembly
- casing
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- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 25
- 230000002265 prevention Effects 0.000 claims description 7
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 2
- 230000000740 bleeding effect Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a lower trapper reaches blowout preventer including lower trapper, this time trapper include the casing, the side direction of casing is provided with the bypass interface, bypass interface intercommunication installation pressure switch valve for connect the pressure line to water injection pressurization in the blowout preventer or discharge the liquid in the blowout preventer, realize that the pump goes into the tee bend function. The utility model discloses in with quick pressure testing subassembly and/or pump go into three-way function integration under on a part of trapper, reduced well head mounting height and the operation degree of difficulty, safe risk, work load and intensity of labour, improved the operating efficiency, simplified the configuration of blowout preventer, reduced blowout preventer and made and use cost.
Description
Technical Field
The utility model relates to an oil field cable, steel wire area press operation technical field, especially relate to a blowout preventer of trapper and configuration this time trapper down.
Background
In the traditional cable/steel wire pressure operation of an oil and gas field, the blowout preventer is wellhead operation equipment which must be used, and a main body pressure-bearing component which is vertically connected and installed on a wellhead mainly comprises a sealing head, an upper catcher, a plurality of blowout preventers, a rapid pressure test assembly, a pumping tee joint, a lower catcher, a blowout preventer, a conversion flange (conversion joint) and the like. The rapid pressure test assembly is used for performing pressure self-test by injecting water and pressurizing to the wellhead of the whole blowout preventer before opening a wellhead valve, maintaining or replacing a downhole instrument or tool after downhole operation is completed, rapidly testing pressure only from a narrow gap between two sealing rings from a disassembly part after the blowout preventer is decompressed, disassembled and re-assembled, and replacing the whole water injection and pressurization self-test process of the blowout preventer again by detecting the sealing performance of the two sealing rings, and greatly improving the operation efficiency of the wellhead particularly in multi-section perforating and fracturing operation of a pumping cable bridge plug of a horizontal well; the main function of the lower catcher is to prevent the instrument string (or the tool string) from falling into the well when the instrument string (or the tool string) is lifted from the well to the top end of the lubricator due to the fact that cables/steel wires are pulled apart or pulled off from the rope cap head for various reasons; the main function of the pumping tee is to fill water into the blowout preventer from the bypass port to pressurize or discharge liquid in the blowout preventer during operation.
At present, when a cable/steel wire operates under pressure, a pressure-bearing component of the whole set of blowout preventer needs to be connected, and then the whole set of blowout preventer is hoisted and installed on a wellhead with a certain height. However, as shown in fig. 1, after the lower catcher 11, the rapid pressure testing assembly 12 and the pumping tee 13 are connected, the height is usually high, especially for large-scale equipment with large drift diameter and high pressure, and the installation, disassembly and operation difficulty of operators at a high wellhead is large; in addition, the whole set of equipment has the defects of more independent components, high wellhead connecting and mounting height, time and labor consumption in connection and disassembly, large workload, low operation efficiency, high labor intensity, more frequent connection and disassembly parts, more potential pressure leakage points, high cost (manufacturing cost, acquisition cost, use cost and maintenance cost) of the whole set of equipment, large workload of maintenance and pressure testing, large occupied space of transportation dragging pry and the like.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect or not enough, an object of the utility model is to provide a blowout preventer of trapper under this is down caught and configuration, go into quick pressure testing subassembly and/or pump into three-way function integration under on a part of trapper, reduce blowout preventer's well head and connect the mounting height, reduce operation personnel well head installation and dismantle and the operation degree of difficulty, the safety risk, work load and intensity of labour and equipment cost (manufacturing cost, acquisition cost, use cost, maintenance cost), improve operating efficiency and maintenance efficiency, optimize blowout preventer configuration and structure.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a lower trap, comprising: the casing, the side direction of casing is provided with the bypass interface, bypass interface intercommunication installation pressure switch valve for connect the pressure pipeline to the internal water injection pressurization of blowout preventer or discharge the liquid in the blowout preventer, realize the pump into tee bend function.
Optionally, the lower catcher further comprises: casing upper portion attach fitting and special upper joint subassembly, the special upper joint subassembly lower part is provided with twice sealing washer, with the sealed face cooperation of casing upper portion attach fitting hole forms the pressure seal space seted up a pressure measurement aperture between the sealed fitting surface twice sealing washer of casing upper portion attach fitting hole, outside threaded connection connects and the needle valve, injects liquid through connecting high-pressure pump and hydraulic pressure pipeline and detects the leakproofness of twice sealing washer for the gap between the twice sealing washer to realize the function of pressure testing subassembly.
Optionally, the lower catcher further comprises: the hydraulic control device comprises a blocking fork assembly, a hydraulic cylinder and a hydraulic control device, wherein the blocking fork assembly is arranged in an eccentric inner cavity in the middle of a shell, the outer side of the shell is connected with an operating handle which synchronously acts and an external indicating rod which indicates the state of the blocking fork, and the hydraulic cylinder arranged on the outer side of the shell is used for realizing hydraulic control of the operating handle; when a tool string or an instrument string in a well is lifted to the position of the stop fork assembly from the well, the tool string or the instrument string automatically pushes the stop fork assembly to enter the blowout prevention pipe, and after the tool string or the instrument string completely passes through the stop fork assembly, the stop fork assembly automatically resets to a horizontal state by a spring to prevent the tool string or the instrument string from being collided at the top end of the blowout prevention pipe to fall into the well, so that the function that the lower catcher per se blocks the instrument or the tool from falling into the well is realized; wherein the cocking of the catch fork assembly opens the lower trap path by manual or hydraulic operated external operating handle.
Optionally, the lower catcher further comprises: the upper end of the lower union connecting joint is in threaded connection with the shell and sealed by a sealing ring, and the lower end of the lower catcher is connected with a blowout preventer or a blowout preventer pressure-bearing member through the union.
Optionally, the upper connecting joint of the shell is in screw connection with the shell and is sealed by a sealing ring.
Optionally, the upper connecting joint of the housing and the housing are of an integral structure.
Optionally, the upper end of the special upper joint assembly is connected with a lubricator or a pressure-bearing member of a blowout preventer through a union, and the lower end of the special upper joint assembly is in threaded connection with the upper connecting joint of the shell through a union nut.
Optionally, the shortest length of the special upper joint component is used for connecting the upper part and the lower part, and the longest length of the special upper joint component is used for replacing the lubricator.
Optionally, the bypass interface is integral with the housing.
A blowout preventer including a lower trap having any of the features described above.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a blowout preventer of trapper under and configuration should, through go into tee bend and/or quick pressure testing subassembly function integration under on a part of trapper with the pump, and cancelled the pump into tee bend and/or these two independent parts of quick pressure testing subassembly in a whole set of blowout preventer, make blowout preventer's well head connect mounting height, operation personnel well head installation and dismantlement and the operation degree of difficulty, the safety risk, work load and intensity of labour have consequently reduced a lot, it often connects dismantlement position and latent probably lets out leakage point and part quantity to have reduced equipment simultaneously, blowout preventer configuration and structure have been optimized, equipment manufacturing cost has been reduced, user acquisition cost, use cost and maintenance cost, personnel's operation convenience has been improved, installation and dismantlement efficiency and maintenance efficiency. In addition, the occupied space in the transportation drag pry can be reduced, and the transportation drag pry can be designed to be smaller, lighter and lower in cost.
Drawings
FIG. 1 is a schematic diagram showing the connection of three components of a lower catcher, a rapid pressure test assembly and a pumping tee in the prior art;
FIG. 2 is a schematic view of the lower catcher of the present invention;
fig. 3 is a schematic structural diagram of the special upper joint assembly of the present invention.
In the figure, 1 — dedicated top joint assembly; 2, connecting a joint at the upper part of the shell; 3-joints and needle valves; 4, a shell; 5-a bypass interface; 6-pressure switch valve; 7, connecting the lower union with a joint; 8, sealing rings; 9-a pressure measuring small hole; 10-a fork assembly; 11-a rapid pressure test component; 12-lower catcher; 13-pump in the tee.
Detailed Description
The present invention will be described in detail with reference to the drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on embodiment in the utility model and all other relevant embodiments, all belong to the protection scope of the utility model.
As shown in fig. 2 and 3, the utility model provides a lower trapper can realize down trapper and pump into tee bend and/or quick pressure testing subassembly function, specifically includes: the hydraulic control device comprises a shell 4, wherein a fork assembly 10 is installed in the middle of the shell, the fork assembly 10 is installed in an eccentric inner cavity in the middle of the shell, an operating handle and/or a fork state external indicating rod which synchronously act is connected to the outside, and a hydraulic control operating handle can be realized by installing an external hydraulic cylinder. When a tool string or an instrument string in a well is lifted to the position of the stop fork assembly from the well, the tool string or the instrument string automatically pushes the stop fork assembly to enter the blowout prevention pipe, and after the tool string or the instrument string completely passes through the stop fork assembly, the stop fork assembly automatically resets to be in a horizontal state through a spring, so that the tool string or the instrument string is prevented from being collided at the top end of the blowout prevention pipe and falling into the well, and the function that the lower catcher per se stops the instrument or the tool from falling into the well is realized. Cocking the fork assembly opens the lower trap path may be accomplished by manually or hydraulically operating an external operating handle.
The side outlet of the shell 4 is provided with a large-diameter bypass connector 5 which is used for being connected with a pressure switch valve 6 and can be connected with a pressure pipeline to quickly inject water and pressurize or discharge liquid in the blowout preventer, so that the function of pumping into a tee joint is realized. Alternatively, the bypass connection 5 and the housing 4 can be designed as one piece.
The upper portion of casing is connected with attach fitting 2 and special top connection subassembly 1, special top connection subassembly lower part is provided with twice sealing washer 8, with the sealed face cooperation of casing upper portion attach fitting hole forms the pressure seal space seted up a pressure measurement aperture 9 between the sealed face twice sealing washer of attach fitting hole, outside threaded connection connects and needle valve 3, injects high-pressure liquid into the leakproofness that detects twice sealing washer through connecting high-pressure pump and hydraulic pressure pipeline for the narrow and small gap between twice sealing washer to this replaces the pressure self-checking of the inside water injection pressurization of whole set of blowout preventer well head pressure-bearing spare, realizes the function of quick pressure testing subassembly.
The lower part of the shell 4 is connected with a lower union connecting joint 7 through threaded connection and a sealing ring in a sealing mode, and the lower end of the lower union connecting joint is connected with a blowout preventer or other blowout preventer pressure-bearing components through a union.
The shell 4 is connected with the shell upper part connecting joint 2 through screws and sealed by a sealing ring. Alternatively, the two can be designed as one piece.
The upper end of the special upper joint component 1 is connected with a blowout prevention pipe or other blowout preventer pressure-bearing components through a union, and the lower end of the special upper joint component is in threaded connection with a connecting joint at the upper part of the shell through a union nut. Optionally, the length of the special upper joint component is shortest to play a role in connecting the upper part and the lower part, and the length of the special upper joint component is longest to play a role in replacing the lubricator, namely, the length of the special upper joint component is shortest to be the most compact size, the length of the special upper joint component can be the longest length of the lubricator, and the special upper joint component can also have a role of the lubricator.
In the embodiment, the functions of the pumping tee joint and/or the rapid pressure test assembly are integrated on one component of the lower catcher, and two independent components of the pumping tee joint and/or the rapid pressure test assembly are cancelled in the whole blowout preventer, so that the wellhead connection and installation height of the blowout preventer, the wellhead installation, disassembly and operation difficulty of operators, safety risks, workload and labor intensity are greatly reduced, meanwhile, the number of frequently-connected and disassembled parts and potential possible leakage points and component quantity of equipment are reduced, the configuration and structure of the blowout preventer are optimized, the equipment manufacturing cost is reduced, the user purchase cost, the use cost and the maintenance cost are reduced, the operation convenience of personnel is improved, and the installation, disassembly and maintenance efficiency are improved. In addition, the occupied space in the transportation drag pry can be reduced, and the transportation drag pry can be designed to be smaller, lighter and lower in cost.
The utility model also provides a blowout preventer, including above-mentioned trapper down.
In particular, the blowout preventer is a cable/wire blowout preventer.
The utility model discloses a lower trapper is in the course of the work, injects high-pressure liquid through high-pressure pump and hydraulic pressure pipeline for the narrow and small gap between the special top connection twice sealing washer, replaces through the leakproofness that detects twice sealing washer and pressurizes for a whole set of blowout preventer water injection once more and realize quick pressure testing function, can be through external hose or hard tube pipeline for the interior water injection pressurization of blowout preventer or the liquid of releasing, realizes that the pump goes into the three-way function. The whole set of blowout preventer directly cancels two parts of a pumping tee joint and a rapid pressure test assembly, and integrates and designs the three parts of the prior pumping tee joint, the rapid pressure test assembly and a lower catcher into one part of the lower catcher with the functions of the rapid pressure test assembly and the pumping tee joint. Therefore, the wellhead connecting and mounting height of the whole set of blowout preventer, the wellhead mounting, dismounting and operating difficulty of operators, safety risks, workload and labor intensity are greatly reduced, the number of frequently connected and dismounted parts and potential possible leakage points and parts of equipment is reduced, the configuration and structure of the blowout preventer are optimized, the manufacturing cost of the equipment, the purchase cost of users, the use cost and the maintenance cost are reduced, and the operating convenience, the mounting, dismounting efficiency and the maintenance efficiency of the operators are improved. In addition, the occupied space in the transportation drag pry can be reduced, and the transportation drag pry can be designed to be smaller, lighter and lower in cost.
It should be apparent to those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and therefore, the modifications and changes that can be made by those skilled in the art to some parts of the present invention still embody the principles of the present invention, and the objects of the present invention are achieved, all falling within the scope of the present invention.
Claims (10)
1. A lower trap, comprising:
casing (4), the side direction of casing (4) is provided with bypass interface (5), bypass interface (5) intercommunication installation pressure switch valve (6) for connect the pressure pipeline to the interior water injection pressurization of blowout preventer or the liquid in the blowout preventer of bleeding, realize going into the tee bend function.
2. The lower catcher as claimed in claim 1, further comprising:
casing upper portion attach fitting (2) and special upper joint subassembly (1), special upper joint subassembly (1) lower part is provided with twice sealing washer (8), with the sealed face cooperation of casing upper portion attach fitting (2) hole forms pressure seal space casing upper portion attach fitting (2) hole seal fitting surface has seted up a pressure measurement aperture (9) between twice sealing washer (8), and outside threaded connection connects and needle valve (3), injects liquid for the gap between twice sealing washer (8) through connecting high-pressure pump and hydraulic pressure pipeline and detects the leakproofness of twice sealing washer (8) to realize the function of pressure testing subassembly.
3. The lower catcher as claimed in claim 1, further comprising:
the hydraulic control device comprises a fork assembly (10), wherein the fork assembly (10) is installed in an eccentric inner cavity in the middle of a shell (4), an operating handle and an external indicating rod are connected to the outer side of the shell (4), the operating handle and the external indicating rod are synchronously operated, the external indicating rod indicates the state of a fork, and a hydraulic cylinder installed on the outer side of the shell (4) is used for realizing hydraulic control of the operating handle; when a tool string or an instrument string in a well is lifted to the position of the stop fork assembly from the well, the tool string or the instrument string automatically pushes the stop fork assembly (10) to enter the blowout prevention pipe, and after the tool string or the instrument string completely passes through the stop fork assembly (10), the stop fork assembly (10) automatically resets to be in a horizontal state by virtue of a spring, so that the tool string or the instrument string is prevented from being collided at the top end of the blowout prevention pipe and falling into the well, and the function that the lower catcher per se blocks the instrument or the tool from falling into the well is realized; wherein opening of the lower catcher path of the cocking yoke assembly (10) is achieved by manual or hydraulic operated external operating handle.
4. The lower catcher as claimed in claim 1, further comprising:
the upper end of the lower union connecting joint (7) is in threaded connection with the shell (4) and is sealed by a sealing ring, and the lower end of the lower catcher is connected with a blowout preventer or a blowout preventer pressure-bearing component by the union.
5. The lower trap according to claim 2 wherein the housing upper connection fitting (2) is screwed and sealed with the housing (4).
6. The lower catcher as claimed in claim 2, characterized in that the housing upper connecting joint (2) is of one-piece construction with the housing (4).
7. The lower catcher as claimed in claim 2, characterized in that the upper end of the special upper joint assembly (1) is connected to a lubricator or blowout preventer pressure-bearing member by union, and the lower end of the special upper joint assembly (1) is screwed to the upper housing connection joint (2) by union nut.
8. The lower catcher as claimed in claim 2, characterized in that the length of the special upper joint assembly (1) is the shortest to function as a connecting upper and lower parts, and the length of the special upper joint assembly (1) is the longest to function as a substitute for the lubricator.
9. The lower trap as claimed in claim 1 wherein the bypass interface (5) is of unitary construction with the housing (4).
10. A blowout preventer comprising the lower trap of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916419.XU CN210033359U (en) | 2019-06-18 | 2019-06-18 | Lower catcher and blowout preventer comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916419.XU CN210033359U (en) | 2019-06-18 | 2019-06-18 | Lower catcher and blowout preventer comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033359U true CN210033359U (en) | 2020-02-07 |
Family
ID=69348238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920916419.XU Active CN210033359U (en) | 2019-06-18 | 2019-06-18 | Lower catcher and blowout preventer comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033359U (en) |
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2019
- 2019-06-18 CN CN201920916419.XU patent/CN210033359U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 721306 Gaoxin 19 Road, Baoji high tech Development Zone, Shaanxi Province Patentee after: Baoji Saifu Petroleum Machinery Co.,Ltd. Country or region after: China Address before: 721306 Gaoxin 19 Road, Baoji high tech Development Zone, Shaanxi Province Patentee before: BAOJI SAFE PETROLEUM MACHINERY Co.,Ltd. Country or region before: China |