CN103615575A - High-low pressure test valve of blowout preventer - Google Patents
High-low pressure test valve of blowout preventer Download PDFInfo
- Publication number
- CN103615575A CN103615575A CN201310594324.8A CN201310594324A CN103615575A CN 103615575 A CN103615575 A CN 103615575A CN 201310594324 A CN201310594324 A CN 201310594324A CN 103615575 A CN103615575 A CN 103615575A
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- pressure
- main piston
- channel
- valve body
- passage
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000009434 installation Methods 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 21
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000000740 bleeding effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a high-low pressure test valve of a blowout preventer. The high-low pressure test valve is capable of testing pressure by pressure and by gauge. The high-low pressure test valve comprises a valve body and a lock nut connected with one end of the valve body, a mounting cavity is formed inside the valve body, a main piston and a return spring which are matched with each other are arranged in the mounting cavity, a pressure inlet communicated with the mounting cavity is formed in the valve body, a main piston passage as well as an upper main piston passage and a lower main piston passage both communicated with the main piston passage are arranged in the main piston, a low-pressure pressure gauge connection and a high-pressure pressure gauge connection are arranged on a low-pressure passage and a high-pressure passage respectively, a low-pressure main piston limiting device is arranged on the valve body, an upper pressure-releasing passage structure is arranged between the upper main piston passage and the low-pressure passage, and a lower pressure-releasing passage structure is arranged between the lower main piston passage and the high-pressure passage.
Description
Technical field
The present invention relates to a kind of well control device detection facility, relate in particular to a kind of preventer high low pressure pressure-testing valve.
Background technique
Preventer is the key component of well control device, be mainly used in drilling well, the operations such as oil recovery, control well mouth pressure in operation, therefore on preventer, well must carry out high low pressure leakage test before using, check preventer sealability, to determine whether it can enter the major measure of marching into the arena and using, according to well control requirement, high, low pressure test (LPT) need to separately be carried out, can not share high pressure gauge, original pressure-testing valve can not complete pressure testing in same pressure piping, reading inaccuracy, loosely organized, high low pressure joint number of times is frequent, safety coefficient is poor, test labor intensity large simultaneously, inefficiency.
Summary of the invention
Technical problem to be solved by this invention is: a kind of preventer high low pressure pressure-testing valve that can the pressure testing of dividing potential drop submeter is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: preventer high low pressure pressure-testing valve, comprise: valve body, the lock nut being connected with valve body one end, inside at described valve body is provided with installation cavity, in described installation cavity, be provided with the main piston and the Returnning spring that cooperatively interact with it, one end and the main piston of described Returnning spring offset, the other end and the lock nut of described Returnning spring offset, be arranged on the pressure entrance being connected with installation cavity on valve body, in described main piston, be provided with main piston passage, the main piston upper channel being connected with main piston passage and the main piston lower channel being connected with main piston passage, on described valve body, be provided with low-pressure channel, high-pressure channel, with low-pressure channel, the small piston installation cavity that high-pressure channel is connected and the pressure export being connected with small piston installation cavity, in described small piston installation cavity, be provided with the small piston cooperatively interacting with it, on described low-pressure channel, be provided with low pressure gauge interface, on described high-pressure channel, be provided with high-pressure manometer interface, on described valve body, on described valve body, be provided with low pressure main piston limit stoper, between main piston upper channel and low-pressure channel, be provided with and bleeding off pressure channel design, between main piston lower channel and high-pressure channel, be provided with and transfer pressure passageway structure.
In order to solve the problems of the technologies described above better, the further technological scheme that the present invention adopts is: on described, bleed off pressure channel design and to transfer pressure passageway structure structure identical, its structure comprises: on being connected with main piston upper channel and low-pressure channel, bleed off pressure passage, be arranged on the sealing gasket and the locking nut that bleed off pressure passage outside, be arranged on the sieve plate, sealed steel ball, stuffing box gland and the sealing mounting plate that bleed off pressure in passage, described sealed steel ball is arranged in the stuffing box gland between sieve plate and sealing mounting plate.
In order to solve the problems of the technologies described above better, the further technological scheme that the present invention adopts is: the structure of described low pressure main piston limit stoper comprises: spacing steel ball installation cavity, be arranged on the spacing steel ball of spacing steel ball installation cavity inside, in the spacing steel ball installation cavity in described spacing steel ball outside, be provided with limit spring and the caging bolt cooperatively interacting with it, one end and the caging bolt of described limit spring offset, and the other end of described limit spring and spacing steel ball offset.
In order to solve the problems of the technologies described above better, the further technological scheme that the present invention adopts is: between described valve body and lock nut, be provided with the first seal ring, between described valve body and main piston, be provided with the second seal ring, between described valve body and small piston, be provided with the 3rd seal ring.
Advantage of the present invention is: above-mentioned preventer high low pressure pressure-testing valve, can be according to well control requirement, high and low pressure test is separately carried out, dividing meter reading is accurate, in same pressure piping, dividing potential drop submeter completes pressure testing, and compact structure is not worried the potential safety hazard that high low pressure joint number of times frequently brings, the labor intensity that has reduced test, has improved working efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of preventer high low pressure pressure-testing valve of the present invention.
Fig. 2 is the structural representation of preventer high low pressure pressure-testing valve low pressure pressure testing state of the present invention.
Fig. 3 is the structural representation of preventer high low pressure pressure-testing valve high pressure pressure testing state of the present invention.
In figure: 1, valve body, 2, lock nut, 3, installation cavity, 4, main piston, 5, Returnning spring, 6, pressure entrance, 7, main piston passage, 8, main piston upper channel, 9, main piston lower channel, 10, low-pressure channel, 11, high-pressure channel, 12, small piston installation cavity, 13, pressure export, 14, small piston, 15, low pressure gauge interface, 16, high-pressure manometer interface, 17, on bleed off pressure passage, 18, sealing gasket, 19, locking nut, 20, sieve plate, 21, sealed steel ball, 22, stuffing box gland, 23, sealing mounting plate, 24, spacing steel ball installation cavity, 25, spacing steel ball, 26, limit spring, 27, caging bolt, 28, the first seal ring, 29, the second seal ring, 30, the 3rd seal ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, describe in detail particular content of the present invention.
As Fig. 1, Fig. 2, shown in Fig. 3, preventer high low pressure pressure-testing valve, comprise: valve body 1, the lock nut 2 being connected with valve body 1 one end, in the inside of described valve body 1, be provided with installation cavity 3, in described installation cavity 3, be provided with the main piston 4 and the Returnning spring 5 that cooperatively interact with it, one end of described Returnning spring 5 and main piston 4 offset, the other end of described Returnning spring 5 and lock nut 2 offset, be arranged on the pressure entrance 6 being connected with installation cavity 3 on valve body 1, in described main piston 4, be provided with main piston passage 7, the main piston upper channel 8 being connected with main piston passage 7 and the main piston lower channel 9 being connected with main piston passage 7, on described valve body 1, be provided with low-pressure channel 10, high-pressure channel 11, with low-pressure channel 10, the small piston installation cavity 12 that high-pressure channel 11 is connected and the pressure export 13 being connected with small piston installation cavity 12, in described small piston installation cavity 12, be provided with the small piston 14 cooperatively interacting with it, on described low-pressure channel 10, be provided with low pressure gauge interface 15, on described high-pressure channel 11, be provided with high-pressure manometer interface 16, on described valve body 1, on described valve body 1, be provided with low pressure main piston limit stoper, between main piston upper channel 8 and low-pressure channel 10, be provided with and bleed off pressure channel design, between main piston lower channel 9 and high-pressure channel 11, be provided with and transfer pressure passageway structure.
As shown in Figure 1, Figure 2, Figure 3 shows, in this example, in order to make to bleed off pressure, can normally carry out, on described, bleed off pressure channel design and to transfer pressure passageway structure structure identical, its structure comprises: on being connected with main piston upper channel 8 and low-pressure channel 10, bleed off pressure passage 17, be arranged on the sealing gasket 18 and the locking nut 19 that bleed off pressure passage 17 outsides, be arranged on the sieve plate 20, sealed steel ball 21, stuffing box gland 22 and the sealing mounting plate 23 that bleed off pressure in passage 17, described sealed steel ball 21 is arranged in the stuffing box gland 22 between sieve plate 20 and sealing mounting plate 23.
As shown in Figure 1, Figure 2, Figure 3 shows, in this example, for main piston 4 can accurately be located, the structure of described low pressure main piston limit stoper comprises: spacing steel ball installation cavity 24, be arranged on the spacing steel ball 25 of spacing steel ball installation cavity 24 inside, in the spacing steel ball installation cavity 24 in described spacing steel ball 25 outsides, be provided with limit spring 26 and the caging bolt 27 cooperatively interacting with it, one end of described limit spring 26 and caging bolt 27 offset, and the other end of described limit spring 26 and spacing steel ball 25 offset.
As shown in Figure 1, Figure 2, Figure 3 shows, in this example, in order to reach good sealing effect, between described valve body 1 and lock nut 2, be provided with the first seal ring 28, between described valve body 1 and main piston 4, be provided with the second seal ring 29, between described valve body 1 and small piston 14, be provided with the 3rd seal ring 30.
During use, described pressure entrance 6 joins and is connected with pressure testing machine pressure piping interface, described pressure export 13 is connected with the preventer interface by pressure testing, described low pressure gauge interface 15 joins with low pressure gauge, described high-pressure manometer interface and high-pressure manometer join, and check that pipeline connection, pressure gauge connection and sealing situation start to suppress after intact simultaneously.
In using process, pressure enters in the installation cavity 3 and main piston passage 7 in valve body 1 from pressure entrance 6, main piston passage 7 is now sealing state, pressure enters main piston upper channel 8 and main piston lower channel 9, now main piston upper channel 8 with on bleed off pressure structure and be connected, thereby pressure promotes sealed steel ball 21 through sieve plate 20 to be squeezed mutually and makes to bleed off pressure structure formation channel seal with sealing mounting plate 23, in like manner, main piston lower channel 9 with transfer laminated structure and be connected, transfer laminated structure and also form channel seal, under pressure, described Returnning spring 5 is compressed, main piston 4 slides interior beginning of installation cavity 3, under 1-2.5MPa pressure, main piston 4 slides into the limit point place of spacing steel ball 25, now low-pressure channel 10 is connected with main piston passage 7, pressure enters low-pressure channel 10, through the aobvious number of low pressure gauge, under pressure continuation effect, small piston 14 is pushed in small piston installation cavity 12, pressure is entered in preventer by pressure export 13, voltage stabilizing in required time, after finishing, voltage stabilizing bleeds off pressure, pressure An Yuan returns on road, Returnning spring 5 promotes main piston 4 and sets back, now main piston passage 7 is no longer communicated with low-pressure channel 10, and main piston upper channel 8 with on bleed off pressure structure and be connected, main piston lower channel 9 with transfer laminated structure and be connected, under the effect of pressure, on bleed off pressure sealed steel ball 21 in structure and from formation, bleed off pressure passage with sealing mounting plate 23, the sealed steel ball 21 of transferring in laminated structure squeezes mutually and forms channel seal with sealing mounting plate 23, pressure by bleed off pressure structure, main piston 4, pressure entrance 6 returns to pressure testing machine.
In using process, pressure enters in the installation cavity 3 and main piston passage 7 in valve body 1 from pressure entrance 6, main piston passage 7 is now sealing state, pressure enters main piston upper channel 8 and main piston lower channel 9, now main piston upper channel 8 with on bleed off pressure structure and be connected, thereby pressure promotes sealed steel ball 21 through sieve plate 20 to be squeezed mutually and makes to bleed off pressure structure formation channel seal with sealing mounting plate 23, in like manner, main piston lower channel 9 with transfer laminated structure and be connected, transfer laminated structure and also form channel seal, under pressure, described Returnning spring 5 is compressed, main piston 4 slides interior beginning of installation cavity 3, be greater than under 2.5MPa pressure, limit spring 26 is compressed, when pressure increases to 4MPa, main piston 4 incoming terminals, now high-pressure channel 11 is connected with main piston passage 7, pressure enters high-pressure channel 11, through the aobvious number of high pressure pressure pressure table, under pressure continuation effect, small piston 14 is pushed in small piston installation cavity 12, pressure is entered in preventer by pressure export 13, voltage stabilizing in required time, after finishing, voltage stabilizing bleeds off pressure, pressure An Yuan returns on road, Returnning spring 5 promotes main piston 4 and sets back, now main piston passage 7 is no longer communicated with high-pressure channel 11, and main piston upper channel 8 with on bleed off pressure structure and be connected, main piston lower channel 9 with transfer laminated structure and be connected, under the effect of pressure, on bleed off pressure sealed steel ball 21 in structure and squeeze mutually and form channel seal with sealing mounting plate 23, the sealed steel ball 21 of transferring in laminated structure bleeds off pressure passage with sealing mounting plate 23 from formation, pressure is by transferring laminated structure, main piston 4, pressure entrance 6 returns to pressure testing machine.
Claims (4)
1. preventer high low pressure pressure-testing valve, it is characterized in that: comprising: valve body (1), the lock nut (2) being connected with valve body (1) one end, in the inside of described valve body (1), be provided with installation cavity (3), in described installation cavity (3), be provided with the main piston (4) and the Returnning spring (5) that cooperatively interact with it, one end of described Returnning spring (5) and main piston (4) offset, the other end of described Returnning spring (5) and lock nut (2) offset, be arranged on the upper pressure entrance (6) being connected with installation cavity (3) of valve body (1), in described main piston (4), be provided with main piston passage (7), the main piston upper channel (8) being connected with main piston passage (7) and the main piston lower channel (9) being connected with main piston passage (7), on described valve body (1), be provided with low-pressure channel (10), high-pressure channel (11), with low-pressure channel (10), the small piston installation cavity (12) that high-pressure channel (11) is connected and the pressure export (13) being connected with small piston installation cavity (12), in described small piston installation cavity (12), be provided with the small piston (14) cooperatively interacting with it, on described low-pressure channel (10), be provided with low pressure gauge interface (15), on described high-pressure channel (11), be provided with high-pressure manometer interface (16), at the upper low pressure main piston limit stoper that is provided with on described valve body (1) of described valve body (1), between main piston upper channel (8) and low-pressure channel (10), be provided with and bleed off pressure channel design, between main piston lower channel (9) and high-pressure channel (11), be provided with and transfer pressure passageway structure.
2. according to preventer high low pressure pressure-testing valve claimed in claim 1, it is characterized in that: on described, bleed off pressure channel design and to transfer pressure passageway structure structure identical, its structure comprises: on being connected with main piston upper channel (8) and low-pressure channel (10), bleed off pressure passage (17), be arranged on the sealing gasket (18) and the locking nut (19) that bleed off pressure passage (17) outside, be arranged on the sieve plate (20) bleeding off pressure in passage (17), sealed steel ball (21), stuffing box gland (22) and sealing mounting plate (23), described sealed steel ball (21) is arranged in the stuffing box gland (22) between sieve plate (20) and sealing mounting plate (23).
3. according to the preventer high low pressure pressure-testing valve described in claim 1 or 2, it is characterized in that: the structure of described low pressure main piston limit stoper comprises: spacing steel ball installation cavity (24), be arranged on the inner spacing steel ball (25) of spacing steel ball installation cavity (24), in the spacing steel ball installation cavity (24) in described spacing steel ball (25) outside, be provided with limit spring (26) and the caging bolt (27) cooperatively interacting with it, one end of described limit spring (26) and caging bolt (27) offset, and the other end of described limit spring (26) and spacing steel ball (25) offset.
4. according to preventer high low pressure pressure-testing valve claimed in claim 3, it is characterized in that: between described valve body (1) and lock nut (2), be provided with the first seal ring (28), between described valve body (1) and main piston (4), be provided with the second seal ring (29), between described valve body (1) and small piston (14), be provided with the 3rd seal ring (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594324.8A CN103615575B (en) | 2013-11-14 | 2013-11-14 | High-low pressure test valve of blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594324.8A CN103615575B (en) | 2013-11-14 | 2013-11-14 | High-low pressure test valve of blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103615575A true CN103615575A (en) | 2014-03-05 |
| CN103615575B CN103615575B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310594324.8A Active CN103615575B (en) | 2013-11-14 | 2013-11-14 | High-low pressure test valve of blowout preventer |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928693A (en) * | 2016-04-25 | 2016-09-07 | 西南石油大学 | Test device for detecting blowout preventer turn-off performance |
| CN107630696A (en) * | 2017-09-11 | 2018-01-26 | 中国石油化工股份有限公司 | Downhole pressure test device and pressure test method for ground blowout preventer |
| CN111456660A (en) * | 2020-04-15 | 2020-07-28 | 盐城市大冈石油工具厂有限责任公司 | Balanced type full-bore high-pressure control valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720116Y (en) * | 2004-06-30 | 2005-08-24 | 辽河石油勘探局 | Pressure-testing tool for shut-in well device |
| US20100200225A1 (en) * | 2007-10-31 | 2010-08-12 | Downhole And Design International Corp. | Multi-functional completion tool |
| CN201650194U (en) * | 2010-04-02 | 2010-11-24 | 景忠峰 | Rapid pressure-testing tool for well mouth |
| CN202832484U (en) * | 2012-08-31 | 2013-03-27 | 天津汇铸石油设备科技有限公司 | Well mouth pressure testing device |
| CN102996535A (en) * | 2012-12-20 | 2013-03-27 | 丰士俊 | Pressure testing hydraulic-pressurizing device |
| CN203532866U (en) * | 2013-11-14 | 2014-04-09 | 盐城市大冈石油工具厂有限责任公司 | High-low pressure test valve of blowout preventer |
-
2013
- 2013-11-14 CN CN201310594324.8A patent/CN103615575B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720116Y (en) * | 2004-06-30 | 2005-08-24 | 辽河石油勘探局 | Pressure-testing tool for shut-in well device |
| US20100200225A1 (en) * | 2007-10-31 | 2010-08-12 | Downhole And Design International Corp. | Multi-functional completion tool |
| CN201650194U (en) * | 2010-04-02 | 2010-11-24 | 景忠峰 | Rapid pressure-testing tool for well mouth |
| CN202832484U (en) * | 2012-08-31 | 2013-03-27 | 天津汇铸石油设备科技有限公司 | Well mouth pressure testing device |
| CN102996535A (en) * | 2012-12-20 | 2013-03-27 | 丰士俊 | Pressure testing hydraulic-pressurizing device |
| CN203532866U (en) * | 2013-11-14 | 2014-04-09 | 盐城市大冈石油工具厂有限责任公司 | High-low pressure test valve of blowout preventer |
Non-Patent Citations (1)
| Title |
|---|
| 梁明熙: "海上高温高压井测试技术", 《天然气工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928693A (en) * | 2016-04-25 | 2016-09-07 | 西南石油大学 | Test device for detecting blowout preventer turn-off performance |
| CN107630696A (en) * | 2017-09-11 | 2018-01-26 | 中国石油化工股份有限公司 | Downhole pressure test device and pressure test method for ground blowout preventer |
| CN111456660A (en) * | 2020-04-15 | 2020-07-28 | 盐城市大冈石油工具厂有限责任公司 | Balanced type full-bore high-pressure control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103615575B (en) | 2016-01-06 |
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