CN104847306A - Underground rod pipe safety valve - Google Patents
Underground rod pipe safety valve Download PDFInfo
- Publication number
- CN104847306A CN104847306A CN201510164807.3A CN201510164807A CN104847306A CN 104847306 A CN104847306 A CN 104847306A CN 201510164807 A CN201510164807 A CN 201510164807A CN 104847306 A CN104847306 A CN 104847306A
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- Prior art keywords
- valve body
- wall
- piston
- upper valve
- inwall
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- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000003292 glue Substances 0.000 claims description 41
- 239000003129 oil well Substances 0.000 claims description 4
- 230000002929 anti-fatigue Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 23
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 208000002740 Muscle Rigidity Diseases 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 101100293261 Mus musculus Naa15 gene Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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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)
- Safety Valves (AREA)
Abstract
The invention relates to an underground rod pipe safety valve used for rod driving artificial lifting. An upper joint and an upper valve body are connected through screw threads; the upper valve body and a lower valve body are connected through screw threads; the lower valve body and a lower joint are connected through screw threads; the outer wall of the upper valve body is provided with a lug boss; a threaded hole is formed in the lug boss; the threaded hole is connected with a control pipeline joint; a piston is arranged on the inner wall of the upper valve body in a sleeving way; a pressure spring, a reset spring and a center pipe are arranged in the piston in a sleeving way; the outer wall of the piston is sealed with the upper part of the upper valve body and the lower part of the upper valve body; the inner wall of the piston is sealed with the upper part of the outer wall of the center pipe and the lower part of the outer wall of the center pipe; the piston is fixedly connected with a spherical rubber core sealing assembly; and the spherical rubber core sealing assembly is pushed to move along the spherical inner wall of the upper part of the upper valve body, so that an annular passage formed between a sucker rod and an oil pipe is closed or opened. During the opening, the normal production of an oil field is not influenced; and during the closing, the annular passage formed between the sucker rod and an oil pipe can be sealed. The underground rod pipe safety valve solves the problem that the safety valve cannot be installed during the rod driving artificial lifting.
Description
Technical field
The present invention relates to a kind of down-hole rod tube safety valve driving artificial lift for bar.
Background technology
Environmental protection and safety in production are more and more paid attention in countries in the world; the safety in production of a lot of country to Oil/gas Well has detailed laws and regulations, emphasizes to be positioned at densely populated areas, Important Economic district, ocean and inland waters and blowing may occur or excessive Oil/gas Well all must install storm valve.In the production at sea oil field, in order to ensure the safety of producing, all requiring to enter safety valve under down-hole, so that at something unexpected happened, when well head controls to lose efficacy, the oil discharge passage of oil pipe can be closed in down-hole, ensureing the safety of platform.At present, domestic sea has the Oil/gas Well of blowing ability to be all provided with storm valve, and onshore oil field also uses storm valve more and more in Oil/gas Well.
In the production of current offshore oilfield, used safety valve is only applicable to flowing well and electric immersible pump well, can only close oil pipe passage, for the safety valve or the blank that have the bar of sucker rod to drive artificially lifted well in oil pipe.The bar that existing technology can not meet offshore oilfield drives artificial lift safety in production needs, and lack a kind of down-hole rod tube safety valve, it can close in oil pipe the down-hole passage having sucker rod.
Summary of the invention
The object of the invention is: drive to solve bar the problem that artificial lift system cannot enter down safety valve, change traditional piston cylinder operator or the opening and closing of link mandrel structure adjusting valve plate, use spherical glue core black box to realize pole sealing or zero envelope function, spy provides a kind of and can be used for the down-hole rod tube safety valve that bar drives artificially lifted well.
For achieving the above object, the present invention is by the following technical solutions: a kind of down-hole rod tube safety valve, is made up of control pipeline, top connection, upper valve body, spherical glue core black box, sealing ring, control valve wire terminal, back-moving spring, piston, central tube, lower valve body, stage clip, lower contact, its architectural feature is: top connection upper end is provided with box, be connected with oil pipe, top connection lower end is provided with box, be connected with upper valve body, upper valve body is a cylindrical tube, upper valve body lower end is provided with pin thread, be connected with lower valve body, upper valve body outer wall is provided with boss, upper valve body outer wall boss is provided with screwed hole, screwed hole is connected with control valve wire terminal, control valve wire terminal is connected with control pipeline, upper valve body upper inside wall is provided with step, central tube up stroke can be limited, upper valve body upper inside wall step is arranged with spherical inner wall, upper valve body spherical inner wall contacts with spherical glue core black box, spherical glue core black box can slide along upper valve body spherical inner wall, step is provided with in the middle part of upper valve body inwall, through hole is provided with in upper valve body, through hole one end connects the screwed hole on upper valve body outer wall boss, the other end connects upper valve body inwall, through hole other end opening is positioned under upper valve body inwall middle bench, upper valve body inner chamber cover has piston, upper valve body upper inside wall coordinates with piston outer wall upper gap, piston outer wall top has cannelure, lay sealing ring, upper valve body inner wall lower coordinates with piston outer wall underclearance, piston outer wall bottom has cannelure, lay sealing ring, piston is a cylindrical tube, can slide along upper valve body inwall, piston upper end is fixedly connected with spherical glue core black box, step is provided with in the middle part of piston outer wall, piston outer wall middle bench height is equal with upper valve body inwall middle bench height, piston outer wall middle bench is positioned under upper valve body inwall middle bench, piston outer wall middle bench and upper valve body inwall middle bench, piston outer wall, upper valve body inwall forms annulus post chamber, annulus post chamber communicates with upper valve body inner via hole, piston inner wall upper end is provided with boss, boss is arranged with back-moving spring, back-moving spring is enclosed within piston, piston inner wall bottom is provided with boss, boss is arranged with stage clip, boss and central tube outer wall matched in clearance, boss inwall has cannelure, lay sealing ring, piston barrel has through hole, through hole one end connects piston outer wall middle bench and upper valve body inwall middle bench, piston outer wall, the annulus post chamber that upper valve body inwall is formed, the through hole other end connects piston inner wall, through hole other end opening is in piston inner wall lower boss upper end, central tube is a cylindrical tube, boss is provided with in the middle part of central tube outer wall, support back-moving spring lower end on boss in the middle part of central tube outer wall, in the middle part of central tube outer wall, boss height is equal with piston inner wall lower boss height, boss and piston inner wall matched in clearance in the middle part of central tube outer wall, in the middle part of central tube outer wall, boss has cannelure, lay sealing ring, boss and piston inner wall lower boss in the middle part of central tube outer wall, piston inner wall, central tube outer wall forms annulus post chamber, annulus post chamber communicates with the through hole on piston barrel, lower valve interior wall is provided with two steps, upper step support stage clip, and can limited piston down stroke, lower step can limit central tube down stroke, lower valve interior wall coordinates with central tube outer wall lower gap, lower valve interior wall has cannelure, lay sealing ring, lower valve body lower end is provided with pin thread, be connected with lower contact, lower end is provided with pin thread, be connected with oil pipe.
The invention has the beneficial effects as follows: (1) safety valve can close the down-hole passage of annular space between sucker rod and oil pipe, solve marine bar and drive the problem that artificial lift cannot enter down safety valve.(2) larger inside latus rectum can be formed when this safety valve is opened, not affect the normal work of underground sucker rod.(3), when this safety valve is closed, pole sealing or zero envelope function can be realized.(4) this safety valve adopts hydraulic driving mode, and down-hole controls simple and reliable.
Accompanying drawing explanation
Working state schematic representation when Fig. 1 is a kind of down-hole of the present invention rod tube safety valve shut-in well;
Working state schematic representation when Fig. 2 is the rod tube safety valve oil recovery of a kind of down-hole of the present invention;
Partial enlarged drawing when Fig. 3 is a kind of down-hole of the present invention rod tube safety valve shut-in well;
Partial enlarged drawing when Fig. 4 is the rod tube safety valve oil recovery of a kind of down-hole of the present invention;
Spherical glue core black box generalized section when Fig. 5 is a kind of down-hole of the present invention rod tube safety valve shut-in well;
Spherical glue core black box generalized section when Fig. 6 is the rod tube safety valve oil recovery of a kind of down-hole of the present invention;
Fig. 7 is spherical glue core black box outside drawing;
In figure: 1. control pipeline, 2. top connection, 3. upper valve body, 4. spherical glue core black box, 5. sealing ring, 6. control valve wire terminal, 7. back-moving spring, 8. piston, 9. central tube, 10. sealing ring, 11. sealing rings, 12. sealing rings, 13. times valve bodies, 14. stage clips, 15. sealing rings, 16. lower contacts, 17. rubber seals, 18. elastic skeletons
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of down-hole of the present invention rod tube safety valve, comprises and controls pipeline 1, top connection 2, upper valve body 3, spherical glue core black box 4, sealing ring 5, control valve wire terminal 6, back-moving spring 7, piston 8, central tube 9, sealing ring 10, sealing ring 11, sealing ring 12, lower valve body 13, stage clip 14, sealing ring 15, lower contact 16, its architectural feature is: top connection 2 upper end is provided with box, be connected with oil pipe, top connection 2 lower end is provided with box, be connected with upper valve body 3, upper valve body 3 is a cylindrical tube, upper valve body 3 lower end is provided with pin thread, be connected with lower valve body 13, upper valve body 3 outer wall is provided with boss, upper valve body 3 outer wall boss is provided with screwed hole, screwed hole is connected with control valve wire terminal 6, control valve wire terminal 6 is connected with control pipeline 1, upper valve body 3 upper inside wall is provided with step 3a, central tube 9 up stroke can be limited, upper valve body 3 upper inside wall step 3a is arranged with spherical inner wall, upper valve body 3 spherical inner wall contacts with spherical glue core black box 4, spherical glue core black box 4 can slide along upper valve body 3 spherical inner wall, step 3c is provided with in the middle part of upper valve body 3 inwall, through hole 3b is provided with in upper valve body 3, through hole 3b one end connection control pipe joint 6, the other end connects upper valve body 3 inwall, through hole 3b other end opening is positioned under upper valve body 3 inwall middle bench 3c, upper valve body 3 inner chamber cover has piston 8, upper valve body 3 upper inside wall coordinates with piston 8 outer wall upper gap, piston 8 outer wall top has cannelure, lay sealing ring 5, upper valve body 3 inner wall lower coordinates with piston 8 outer wall underclearance, piston 8 outer wall bottom has cannelure, lay sealing ring 11, piston 8 is a cylindrical tube, can slide along upper valve body 3 inwall, piston 8 upper end is fixedly connected with spherical glue core black box 4, step 8b is provided with in the middle part of piston 8 outer wall, piston 8 outer wall middle bench 8b height is highly equal with upper valve body 3 inwall middle bench 3c, piston 8 outer wall middle bench 8b is positioned under upper valve body 3 inwall middle bench 3c, piston 8 outer wall middle bench 8b and upper valve body 3 inwall middle bench 3c, piston 8 outer wall, upper valve body 3 inwall forms annulus post chamber 3d, annulus post chamber 3d communicates with upper valve body 3 inner via hole 3b, piston 8 inwall upper end is provided with boss, boss is arranged with back-moving spring 7, back-moving spring 7 is enclosed within piston 8, piston 8 inner wall lower is provided with boss 8d, boss 8d is arranged with stage clip 14, boss 8d and central tube 9 outer wall matched in clearance, boss 8d inwall has cannelure, lay sealing ring 12, piston 8 barrel has through hole 8a, through hole 8a one end connects piston 8 outer wall middle bench 8b and upper valve body 3 inwall middle bench 3c, piston 8 outer wall, the annulus post chamber 3d that upper valve body 3 inwall is formed, the through hole 8a other end connects piston 8 inwall, through hole 8a other end opening is in piston 8 inner wall lower boss 8d upper end, central tube 9 is a cylindrical tube, boss is provided with in the middle part of central tube 9 outer wall, support back-moving spring 7 lower end on boss in the middle part of central tube 9 outer wall, in the middle part of central tube 9 outer wall, boss height is highly equal with piston 8 inner wall lower boss 8d, boss and piston 8 inwall matched in clearance in the middle part of central tube 9 outer wall, in the middle part of central tube 9 outer wall, boss has cannelure, lay sealing ring 10, boss and piston 8 inner wall lower boss 8d in the middle part of central tube 9 outer wall, piston 8 inwall, central tube 9 outer wall forms annulus post chamber 8c, annulus post chamber 8c communicates with the through hole 8a on piston 8 barrel, lower valve body 13 inwall is provided with two steps, upper step 13a support stage clip 14, and can limited piston 8 down stroke, lower step 13b can limit central tube 9 down stroke, lower valve body 13 inwall coordinates with central tube 9 outer wall lower gap, lower valve body 13 inwall has cannelure, lay sealing ring 15, lower valve body 13 lower end is provided with pin thread, be connected with lower contact 16, lower contact 16 lower end is provided with pin thread, be connected with oil pipe.
As shown in Figure 2 and Figure 4, a kind of down-hole of the present invention rod tube safety valve is when oil well is normally produced, control to be connected with hydraulic oil in pipeline 1, hydraulic oil enters upper valve body 3 along controlling pipeline 1, then annulus post chamber 3d is entered along through hole 3b, enter piston 8 inner via hole 8a again, finally enter annulus post chamber 8c, piston 8 comes downwards on lower valve body 13 upper inside wall step 13a, central tube 9 struts spherical glue core black box 4, go upward to upper valve body 3 upper inside wall step 3a, spherical glue core black box 4 does not seal, safety valve central tube is through, ensure the normal oil discharge passage of oil well production.
As shown in figures 1 and 3, a kind of down-hole of the present invention rod tube safety valve is when shunting in a well, control pipeline 1 release, central tube is under the effect of back-moving spring elastic force, go downwards to lower valve interior wall lower step 13b, piston 8 moves up under the effect of stage clip 14 elastic force, promotes spherical glue core black box 4 locking sucker rod, oil discharge passage between R a T is closed, and ensures field produces safety.
As shown in Fig. 5, Fig. 6, Fig. 7, the spherical glue core black box 4 of a kind of down-hole of the present invention rod tube safety valve is combined by rubber seal 17, elastic skeleton 18, spherical glue core black box 4 lower end is an annulus post, upper end by 12 glue cores along the circumferential direction 360 degree uniform, spherical glue core black box 4 outside wall surface is sphere.
The operating principle of a kind of down-hole of the present invention rod tube safety valve is: the present invention be connected on oil pipe, down to design attitude, then other instrument is transferred the completion that puts in place, the general lower position to down-hole 200-300 rice, connect control pipeline, and be connected with control head, when a kind of down-hole of the present invention rod tube safety valve need be opened, control to be connected with hydraulic oil in pipeline 1, piston is subject to two annulus post chamber 3b, the downward hydraulic coupling that 8c produces, stage clip 14 and back-moving spring 7 elastic force upwards, the frictional force upwards that central tube 9 outer wall produces piston 8, the frictional force upwards that upper valve body 3 inwall produces piston 8, hydraulic coupling is greater than spring force and frictional force summation, piston 8 moves downward, central tube 9 is subject to hydraulic coupling upwards, back-moving spring 7 elastic force upwards, the frictional force that piston 8 pairs of central tube 9 outer walls produce, hydraulic coupling is greater than spring force and frictional force summation, central tube 9 moves upward, back-moving spring 7 ratio of rigidity stage clip 14 rigidity is large, piston 8 first comes downwards to stroke end, namely piston 8 support is on lower valve body 13 inwall step 13a, central tube 9 continues up, strut spherical glue core black box 4, be up to stroke end, i.e. upper valve body 3 inwall step 3a place, spherical glue core black box 4 is expanded to outside central tube 9, safety valve central tube is through, spherical glue core black box 4 does not seal, ensure the normal oil discharge passage of oil well production, when a kind of down-hole of the present invention rod tube safety valve chance emergency need be closed, from ground cut-out pressure, control pipeline 1 release, central tube 9 is subject to the downward elastic force of back-moving spring 7, the downward frictional force that spherical glue core black box 4 produces, lower valve body 13 inwall frictional force upwards, the downward elastic force of back-moving spring 7 is greater than frictional force sum total upwards, central tube 9 goes downwards to stroke end, namely central tube 9 support is on lower valve body 13 inwall step 13b, piston 8 is subject to stage clip 14 elastic force upwards, the downward frictional force that upper valve body 3 inwall produces, central tube 9 acts on the frictional force of spherical glue core black box 4, stage clip 14 upwards elastic force is greater than downward frictional force summation, piston 8 is up, spherical glue core black box 4 is driven to slide along upper valve body 3 spherical inner wall, realize pole sealing or zero envelope function.
Claims (4)
1. a down-hole rod tube safety valve, it comprises control pipeline (1), top connection (2), upper valve body (3), spherical glue core black box (4), sealing ring (5), control valve wire terminal (6), back-moving spring (7), piston (8), central tube (9), sealing ring (10), sealing ring (11), sealing ring (12), lower valve body (13), stage clip (14), sealing ring (15), lower contact (16), its architectural feature is: top connection (2) upper end is provided with box, be connected with oil pipe, top connection (2) lower end is provided with box, be connected with upper valve body (3), upper valve body (3) is a cylindrical tube, upper valve body (3) lower end is provided with pin thread, be connected with lower valve body (13), upper valve body (3) outer wall is provided with boss, upper valve body (3) outer wall boss is provided with screwed hole, screwed hole is connected with control valve wire terminal (6), control valve wire terminal (6) is connected with control pipeline (1), upper valve body (3) upper inside wall is provided with step (3a), central tube (9) up stroke can be limited, upper valve body (3) upper inside wall step (3a) is arranged with spherical inner wall, upper valve body (3) spherical inner wall contacts with spherical glue core black box (4), spherical glue core black box (4) can be slided along upper valve body (3) spherical inner wall, step (3c) is provided with in the middle part of upper valve body (3) inwall, through hole (3b) is provided with in upper valve body (3), through hole (3b) one end connection control pipe joint (6), the other end connects upper valve body (3) inwall, through hole (3b) other end opening is positioned under upper valve body (3) inwall middle bench (3c), upper valve body (3) inner chamber cover has piston (8), upper valve body (3) upper inside wall coordinates with piston (8) outer wall upper gap, piston (8) outer wall top has cannelure, lay sealing ring (5), upper valve body (3) inner wall lower coordinates with piston (8) outer wall underclearance, piston (8) outer wall bottom has cannelure, lay sealing ring (11), piston (8) is a cylindrical tube, can slide along upper valve body (3) inwall, piston (8) upper end is fixedly connected with spherical glue core black box (4), step (8b) is provided with in the middle part of piston (8) outer wall, piston (8) outer wall middle bench (8b) height is highly equal with upper valve body (3) inwall middle bench (3c), piston (8) outer wall middle bench (8b) is positioned under upper valve body (3) inwall middle bench (3c), piston (8) outer wall middle bench (8b) and upper valve body (3) inwall middle bench (3c), piston (8) outer wall, upper valve body (3) inwall forms annulus post chamber (3d), annulus post chamber (3d) communicates with upper valve body (3) inner via hole (3b), piston (8) inwall upper end is provided with boss, boss is arranged with back-moving spring (7), back-moving spring (7) is enclosed within piston (8), piston (8) inner wall lower is provided with boss (8d), boss (8d) is arranged with stage clip (14), boss (8d) and central tube (9) outer wall matched in clearance, boss (8d) inwall has cannelure, lay sealing ring (12), piston (8) barrel has through hole (8a), through hole (8a) one end connects piston (8) outer wall middle bench (8b) and upper valve body (3) inwall middle bench (3c), piston (8) outer wall, the annulus post chamber (3d) that upper valve body (3) inwall is formed, through hole (8a) other end connects piston (8) inwall, through hole (8a) other end opening is in piston (8) inner wall lower boss (8d) upper end, central tube (9) is a cylindrical tube, boss is provided with in the middle part of central tube (9) outer wall, support back-moving spring (7) lower end on boss in the middle part of central tube (9) outer wall, in the middle part of central tube (9) outer wall, boss height is highly equal with piston (8) inner wall lower boss (8d), boss and piston (8) inwall matched in clearance in the middle part of central tube (9) outer wall, in the middle part of central tube (9) outer wall, boss has cannelure, lay sealing ring (10), boss and piston (8) inner wall lower boss (8d) in the middle part of central tube (9) outer wall, piston (8) inwall, central tube (9) outer wall forms annulus post chamber (8c), annulus post chamber (8c) communicates with the through hole (8a) on piston (8) barrel, lower valve body (13) inwall is provided with two steps, upper step (13a) support stage clip (14), and can limited piston (8) down stroke, lower step (13b) can limit central tube (9) down stroke, lower valve body (13) inwall coordinates with central tube (9) outer wall lower gap, lower valve body (13) inwall has cannelure, lay sealing ring (15), lower valve body (13) lower end is provided with pin thread, be connected with lower contact (16), lower contact (16) lower end is provided with pin thread, be connected with oil pipe.
2. down-hole according to claim 1 rod tube safety valve, it is characterized in that: described central tube (9) up stroke is limited by upper valve body (3) upper step (3a), and down stroke is limited by lower valve body (13) lower step (13b); Described piston (8) down stroke is limited by lower valve body (13) lower step (13a), and up stroke is limited by upper valve body (13) inwall middle bench (3c).
3. down-hole according to claim 1 rod tube safety valve, it is characterized in that: described spherical glue core black box (4) is by rubber seal (17), elastic skeleton (18) combines, spherical glue core black box (4) lower end is an annulus post, upper end by 12 glue cores along the circumferential direction 360 degree uniform, spherical glue core black box (4) outside wall surface is sphere, spherical glue core black box has stable movable sealing, the performance of anticorrosive and antifatigue, meet Oil/gas Well instructions for use, the form of pressurizeing by controlling pipeline (1) realizes mobile unlatching, the oil discharge passage realized between R a T by controlling the reset of pipeline (1) back lash spring is closed.
4. down-hole according to claim 1 rod tube safety valve, it is characterized in that: when safety valve is opened, described central tube (9) is up, piston (8) drives spherical glue core black box (4) descending, central tube (9) struts spherical glue core black box (4), spherical glue core black box (4) does not seal, and safety valve central tube (9) is through, ensures the normal oil discharge passage of oil well production; When safety valve cuts out, described central tube (9) is descending, and piston (8) drives spherical glue core black box (4) up, and spherical glue core black box (4) is moved along upper valve body (3) spherical inner wall, close up glue core, realize sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164807.3A CN104847306B (en) | 2015-04-09 | 2015-04-09 | A kind of underground rod tube safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164807.3A CN104847306B (en) | 2015-04-09 | 2015-04-09 | A kind of underground rod tube safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104847306A true CN104847306A (en) | 2015-08-19 |
| CN104847306B CN104847306B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510164807.3A Expired - Fee Related CN104847306B (en) | 2015-04-09 | 2015-04-09 | A kind of underground rod tube safety valve |
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| CN (1) | CN104847306B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700031592A1 (en) * | 2017-03-22 | 2018-09-22 | Fore S R L | SAFETY VALVE |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
| CN113915385A (en) * | 2020-07-10 | 2022-01-11 | 中国海洋石油集团有限公司 | Valve plate sealing device of high-temperature underground safety valve of sucker-rod pump and working method of valve plate sealing device |
| CN110821438B (en) * | 2019-12-09 | 2024-04-05 | 天津轻工职业技术学院 | Blowout preventer for rod-driven screw pump oil extraction system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700031592A1 (en) * | 2017-03-22 | 2018-09-22 | Fore S R L | SAFETY VALVE |
| WO2018172946A1 (en) | 2017-03-22 | 2018-09-27 | Fore S.R.L. | Safety valve |
| US11047217B2 (en) * | 2017-03-22 | 2021-06-29 | Fore S.R.L. | Safety valve |
| CN110821438B (en) * | 2019-12-09 | 2024-04-05 | 天津轻工职业技术学院 | Blowout preventer for rod-driven screw pump oil extraction system |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111101893B (en) * | 2019-12-28 | 2021-12-14 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN111561295B (en) * | 2020-05-20 | 2024-05-10 | 大庆丹诺石油科技开发有限公司 | Double-channel underwater safety valve for hydraulic oil production of ocean oil well |
| CN113915385A (en) * | 2020-07-10 | 2022-01-11 | 中国海洋石油集团有限公司 | Valve plate sealing device of high-temperature underground safety valve of sucker-rod pump and working method of valve plate sealing device |
| CN113915385B (en) * | 2020-07-10 | 2023-07-28 | 中国海洋石油集团有限公司 | Valve plate sealing device of high-temperature underground safety valve of rod pump and working method of valve plate sealing device |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
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|---|---|
| CN104847306B (en) | 2018-04-06 |
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