CN216043689U - Blowout preventer on-site pressure testing system - Google Patents
Blowout preventer on-site pressure testing system Download PDFInfo
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- CN216043689U CN216043689U CN202122302418.6U CN202122302418U CN216043689U CN 216043689 U CN216043689 U CN 216043689U CN 202122302418 U CN202122302418 U CN 202122302418U CN 216043689 U CN216043689 U CN 216043689U
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Abstract
The utility model discloses an on-site pressure test system of a blowout preventer, which comprises an oil extraction cross joint, a full-seal flashboard blowout preventer and a half-seal flashboard blowout preventer, wherein the bottom of the half-seal flashboard blowout preventer is provided with a connecting flange, the top of the oil extraction cross joint is provided with an oil extraction cross joint flange, a pressure test flange is fixedly arranged between the oil extraction cross joint flange and the connecting flange through bolts, the middle part of the pressure test flange is provided with a through hole which is communicated up and down, the pressure test flange is provided with a pressurization hole and a pressure relief hole, wellhead steel rings are respectively arranged between the pressure test flange and the oil extraction cross joint flange as well as between the pressure test flange and the connecting flange for sealing, an oil pipe hanger is arranged at the upper end opening part of the oil extraction cross joint, a screw plug is arranged in the oil pipe hanger, and the upper space of the pressure test flange is sealed by the oil pipe hanger and the screw plug. The blowout preventer site pressure testing system is convenient to install, does not need to be disassembled, greatly reduces the labor intensity of site pressure testing of the blowout preventer full-seal flashboard, and improves the operation efficiency.
Description
Technical Field
The utility model relates to well control pressure test equipment in the technical field of petroleum well workover, in particular to a blowout preventer field pressure test system.
Background
The well control equipment on the well repairing operation site is a well head pressure control system which is composed of a plurality of groups of well control equipment such as ram blowout preventers, annular blowout preventers or cylindrical blowout preventers, and the number of equipment components is different according to different well conditions. At present, the well head pressure control is generally carried out by adopting a double ram type blowout preventer combining a full-seal ram type blowout preventer and a half-seal ram type blowout preventer.
According to the requirements of industrial management standards of well control equipment, the blowout preventer assembly needs to be tested periodically to ensure the sealing performance of the blowout preventer assembly in a high-pressure state. The existing field pressure test system adopts a special tubular pressure test nipple with a closed bottom end and a side hole arranged on an oil pipe hanger of a Christmas tree to realize the field pressure test work of a blowout preventer, and the existing field pressure test system can only realize the pressure test of a blowout preventer assembly in a well in a pipe column state under a non-fully-closed state, namely the pressure test of a semi-closed flashboard, a semi-closed cylindrical blowout preventer and an annular blowout preventer under a semi-closed state, and cannot realize the field pressure test of the fully-closed flashboard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a blowout preventer on-site pressure testing system which can realize on-site pressure testing of semi-closed and fully-closed flashboards of a blowout preventer, is convenient to install, does not need to be disassembled, greatly reduces the labor intensity and improves the operation efficiency.
The technical problem to be solved by the utility model is realized by the following technical scheme:
the utility model provides an on-spot pressure testing system of preventer, includes oil recovery cross, totally enclosed ram preventer, half closed ram preventer, totally enclosed ram preventer and half closed ram preventer from last to combined mounting in oil recovery cross upper portion down, half closed ram preventer bottom system has flange, oil recovery cross top system has oil recovery cross flange, its characterized in that: the special pressure test flange is fixedly installed between the oil production four-way flange and the connecting flange through bolts, a through hole which is communicated from top to bottom is formed in the middle of the pressure test flange, a pressure boosting hole and a pressure relief hole are formed in the pressure test flange, wellhead steel rings are installed between the pressure test flange and the oil production four-way flange and between the pressure test flange and the connecting flange for sealing, an oil pipe hanger is installed at the upper end opening of the oil production four-way, a plug is installed in the oil pipe hanger, and the upper space of the pressure test flange is sealed through the oil pipe hanger and the plug.
And a tubular column fixed joint is arranged at the upper part of the screwed plug, a pressure test short section is connected to the tubular column fixed joint, and the upper part of the pressure test short section is inserted into the semi-seal flashboard blowout preventer.
And a plurality of hanging pieces are fixedly connected between the pressure test flange and the connecting flange, the lower parts of the hanging pieces are fixedly installed on the side wall of the pressure test flange by screws, and the upper parts of the hanging pieces are hung on the edge of the connecting flange.
The utility model has the advantages and beneficial effects that:
1. according to the blowout preventer on-site pressure testing system, the pressure testing flange is connected and installed between the semi-seal flashboard blowout preventer and the oil extraction cross, the pressure testing flange is made into a structure with a through middle part, the oil pipe hanger and the screwed plug are installed at the upper end of the oil extraction cross to form a pressure testing closed space, the pressure testing flange is provided with the pressure boosting hole and the pressure relief hole, the pressure boosting hole is connected and installed with the pressure boosting pump through a pipeline, liquid is pumped into the semi-seal flashboard blowout preventer and the full-seal flashboard blowout preventer through the pressure boosting pump to carry out pressure testing, after the pressure testing is finished, the pressure relief can be carried out through the pressure relief hole, the through inner through hole in the middle part of the pressure testing flange is enough to pass through the oil pipe hanger, the pressure testing flange does not need to be detached, the labor intensity is greatly reduced, and the on-site pressure testing working efficiency is improved.
2. According to the blowout preventer field pressure test system, the pipe column fixed joint is arranged at the upper part of the screw plug, the pressure test short section is connected to the pipe column fixed joint, the semi-closed ram blowout preventer is inserted into the upper part of the pressure test short section, when the semi-closed ram blowout preventer is subjected to pressure test, the semi-closed ram blowout preventer is closed, the semi-closed ram blowout preventer is made to tightly hold the pressure test short section, and then the pressure test is carried out through the pressurizing hole; when carrying out the pressure testing to totally enclosed flashboard preventer, open half-seal flashboard preventer, take out the pressure testing nipple joint, close totally enclosed flashboard preventer flashboard, carry out the pressurization test through the pressure boost hole and can carry out the pressure testing to totally enclosed flashboard preventer to realize the pressure testing step by step of preventer subassembly.
3. According to the blowout preventer on-site pressure testing system, the pressure testing flange and the connecting flange are fixedly connected through the hanging pieces, the lower portions of the hanging pieces are fixedly installed on the side wall of the pressure testing flange through screws, the upper portions of the hanging pieces are hung on the edge of the connecting flange, the pressure testing flange is fixedly connected with the blowout preventer flange through the hanging pieces, even if the blowout preventer is dismounted and carried, the pressure testing flange and the blowout preventer flange can be guaranteed to be fixedly installed all the time, and accessories are prevented from being lost or damaged.
4. The blowout preventer on-site pressure testing system has the advantages of compact structure, scientific and reasonable design, convenience in installation, no need of disassembly in the midway of use, great reduction in labor intensity of on-site pressure testing of the totally-enclosed flashboards of the blowout preventer, and improvement in operation efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the pressure test flange of the present invention.
In the figure:
1-oil extraction cross, 2-oil pipe hanger, 3-plug, 4-pipe column fixed joint, 5-pressure test flange, 6-pressure test short section, 7-connecting flange, 8-semi-seal ram blowout preventer, 9-full-seal ram blowout preventer, 10-bolt, 11-second wellhead steel ring, 12-hanging piece, 13-bolt, 14-first wellhead steel ring, 15-oil extraction cross flange, 16-through hole, 17-steel ring mounting groove, 18-pressurizing hole and 19-pressure relief hole.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the utility model.
Referring to fig. 1-2, the blowout preventer field pressure test system comprises an oil extraction cross 1, a full-seal ram blowout preventer 9 and a half-seal ram blowout preventer 8, wherein the full-seal ram blowout preventer 9 and the half-seal ram blowout preventer 8 are combined from top to bottom and are arranged on the upper part of the oil extraction cross 1, a connecting flange 7 is arranged at the bottom of the half-seal ram blowout preventer 8, and an oil extraction cross flange 15 is arranged at the top of the oil extraction cross 1. The innovation point is as follows: a pressure test flange 5 is fixedly installed between an oil extraction four-way flange 15 and a connecting flange 7 through a plurality of bolts 10 which are arranged at intervals, the pressure test flange 5 is made into a ring shape, a through hole 16 which is communicated up and down is formed in the middle of the pressure test flange 5, a pressurizing hole 18 and a pressure relief hole 19 are formed in the pressure test flange 5, the pressurizing hole 18 is connected with a pressurizing pump through a pipeline, a high-pressure stop valve is installed on the pressure relief hole 19, steel ring installation grooves 17 are formed in the upper end face and the lower end face of the pressure test flange 5, steel ring installation grooves 17 are correspondingly formed in the upper end face of the oil extraction four-way flange 15 and the lower end face of the connecting flange 7, a first wellhead steel ring 14 is installed between the pressure test flange 5 and the oil extraction four-way flange 15, and a second wellhead steel ring 11 is installed between the pressure test flange 5 and the connecting flange 7, and sealing is achieved. An oil pipe hanger 2 is arranged at the upper port part of the oil extraction four-way joint 1, a plug 3 is arranged in the oil pipe hanger 2, and the oil pipe hanger 2 and the plug 3 seal the upper space of a pressure test flange 5.
The pressure test flange 5 and the connecting flange 7 are fixedly connected through a plurality of hanging pieces 12, the lower portions of the hanging pieces are fixedly mounted on the side wall of the pressure test flange 5 through screws 13, and the upper portions of the hanging pieces are hung on the edge of the connecting flange 7. The pressure test flange 5 is fixedly connected with the blowout preventer flange through the hanging piece, and when the blowout preventer is disassembled and carried, the pressure test flange can be always fixedly installed with the blowout preventer flange, so that the fittings are prevented from being lost or damaged.
The upper part of the plug 3 is provided with a pipe column fixed joint 4, the pipe column fixed joint 4 is connected with a pressure test short section 6, and the upper part of the pressure test short section 6 is inserted into a semi-closed ram blowout preventer 8.
The working principle of the blowout preventer site pressure testing system is as follows:
installing a pressure test system: and a full-closed ram blowout preventer 9 and a half-closed ram blowout preventer 8 are connected with the pressure test flange 5 and the oil extraction cross 1 through bolts 10, and sealing is realized through a first well mouth sealing steel ring and a second well mouth sealing steel ring. And (3) connecting the pressurizing hole 18 of the pressure test flange 5 with an upper pressurizing pump, installing a high-pressure stop valve for pressure relief at the pressure relief hole 19, and closing the high-pressure stop valve.
The pressure test process is as follows: firstly, the totally-enclosed ram blowout preventer 9 and the semi-enclosed ram blowout preventer 8 are in an open state, the cavity is filled with clean water, and each group of blowout prevention assemblies are closed step by step from bottom to top and pressure testing is carried out.
The totally enclosed ram blowout preventer 9 can directly carry out the pressure testing, closes totally enclosed ram blowout preventer, starts the booster pump and carries out the pressure testing, and the booster pump passes through pressure boost hole 18 pump into pressure testing subassembly cavity to carry out steady voltage detection as required, detect the completion after, open the high pressure stop valve of connecting in pressure release hole 19 department and carry out the pressure release, show pressure to be zero until the pressure testing pump.
Carry out the pressure testing to half-seal flashboard preventer 8, need put into in oil recovery cross 1 before closing the blowout prevention subassembly and correspond plug 3 with the pressure testing subassembly structure, tubular column fixed joint 4 and pressure testing nipple joint 6, be connected pressure testing nipple joint 6 through screw thread and tubular column fixed joint 4, prevent that pressure testing in-process pressure testing nipple joint 6 from being pushed out the cavity by high pressure, close half-seal flashboard preventer 8, make it hold pressure testing nipple joint 6 tightly and realize sealedly, start the pressure boost pressure testing pump and carry out the pressure testing, the booster pump is with high-pressure liquid through the 18 pump income half-seal flashboard preventer 8 cavities of pressure boost hole, and carry out steady voltage detection as required. After the detection is finished, the high-pressure stop valve at the pressure relief hole 19 is opened to relieve the pressure until the pressure displayed by the pressure test pump is zero. And completing pressure test detection of the semi-closed ram blowout preventer 8 and the fully-closed ram blowout preventer 9 step by step.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (3)
1. The utility model provides a preventer on-spot pressure testing system, includes oil recovery cross (1), totally enclosed ram preventer (9), half ram preventer (8), totally enclosed ram preventer (9) and half ram preventer (8) from last to down the combination mounting in oil recovery cross (1) upper portion, half ram preventer (8) bottom system has flange (7), oil recovery cross (1) top system has oil recovery cross flange (15), its characterized in that: the pressure test flange (5) is fixedly installed between the oil extraction four-way flange (15) and the connecting flange (7) through bolts (10), a through hole (16) which is through from top to bottom is formed in the middle of the pressure test flange (5), a pressurizing hole (18) and a pressure relief hole (19) are formed in the pressure test flange (5), a wellhead steel ring is installed between the pressure test flange (5) and the oil extraction four-way flange (15) and between the pressure test flange and the connecting flange (7) to seal, an oil pipe hanger (2) is installed at an upper end opening of the oil extraction four-way (1), a plug (3) is installed in the oil pipe hanger (2), and the upper space of the pressure test flange (5) is sealed through the oil pipe hanger (2) and the plug (3).
2. The blowout preventer site pressure testing system of claim 1, wherein: the upper part of the pipe plug (3) is provided with a pipe column fixed joint (4), the pipe column fixed joint (4) is connected with a pressure test short section (6), and the upper part of the pressure test short section (6) is inserted into a semi-closed ram blowout preventer (8).
3. The blowout preventer site pressure testing system of claim 1, wherein: adopt a plurality of lacing films (12) to be connected fixedly between pressure testing flange (5) and flange (7), lacing film (12) lower part adopts screw (13) and pressure testing flange (5) lateral wall fixed mounting, lacing film (12) upper portion is hung and is adorned in the edge of flange (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122302418.6U CN216043689U (en) | 2021-09-23 | 2021-09-23 | Blowout preventer on-site pressure testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122302418.6U CN216043689U (en) | 2021-09-23 | 2021-09-23 | Blowout preventer on-site pressure testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216043689U true CN216043689U (en) | 2022-03-15 |
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ID=80538463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122302418.6U Active CN216043689U (en) | 2021-09-23 | 2021-09-23 | Blowout preventer on-site pressure testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216043689U (en) |
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2021
- 2021-09-23 CN CN202122302418.6U patent/CN216043689U/en active Active
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