CN220133948U - Pressure limiting valve device for petroleum underground operation - Google Patents
Pressure limiting valve device for petroleum underground operation Download PDFInfo
- Publication number
- CN220133948U CN220133948U CN202321579973.6U CN202321579973U CN220133948U CN 220133948 U CN220133948 U CN 220133948U CN 202321579973 U CN202321579973 U CN 202321579973U CN 220133948 U CN220133948 U CN 220133948U
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- China
- Prior art keywords
- dabber
- mandrel
- wall
- pressure
- joint
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- 239000003208 petroleum Substances 0.000 title claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 3
- 210000002421 cell wall Anatomy 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 22
- 210000002445 nipple Anatomy 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000011010 flushing procedure Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The utility model provides a pressure limiting valve device for petroleum borehole operation, make dabber lower extreme seal cover in the lower clutch, and the cover is and go up the spring lower extreme that is located the spindle is through lower clutch down location, the dabber makes its upper end support on the lower terminal surface of upper clutch under the initial thrust effect of spring, equipartition has a plurality of pressure release holes on the outer circumference wall of urceolus upper end, make on the outer circumference wall of dabber upper end has the annular, and the circumference equipartition has a plurality of bar holes with dabber hole intercommunication on the annular cell wall, the internal pressure of dabber is greater than the dabber when the initial thrust of spring to the dabber down moves pressure release hole and annular intercommunication pressure release. According to the utility model, through optimizing the pressure limiting structure, the potential safety hazard problem caused by overhigh pressure in the pipe column when tools, oil pipes, drill rods and the like are operated underground is solved, the stable reliability of the liquid pressure in the pipe column when the underground operation is ensured, the faults of the practical tool are reduced, the use is stable and reliable, the structure is simplified, the cost is low, the application range is wide, and the operation precision is high and simple.
Description
Technical Field
The utility model belongs to the technical field of well or petroleum underground drilling and repairing tools, and particularly relates to a pressure limiting valve device for petroleum underground operation.
Background
In the production process of an oil-water well, various tools such as testing, fracturing, well flushing and the like are frequently operated, the whole tubular column has larger internal pressure and displacement, and similar devices for protecting the pressure are not arranged in the underground operations such as testing, fracturing, well flushing and the like, so that flow passage closing or tool faults occur to some tools, oil pipes, drill pipes and the like due to the pressure protection under the working state, sudden pressure rise is caused, underground accidents are caused, and potential safety hazards exist.
Disclosure of Invention
The utility model solves the technical problems that: the pressure limiting valve device for the petroleum underground operation solves the potential safety hazard problem that the pressure in a pipe column is too high and the potential safety hazard exists when tools, oil pipes, drill pipes and the like are operated underground through optimizing the pressure limiting structure, ensures the stable reliability of the liquid pressure in the pipe column when the underground operation is performed, reduces the faults of practical tools, and has the advantages of stable and reliable use, simplified structure, low cost, wide application range, high and simple operation precision and wide application prospect.
The utility model adopts the technical scheme that: the utility model provides a petroleum is pressure limiting valve device for borehole operation, includes top connection, urceolus, dabber and lower clutch, top connection lower extreme links firmly with the urceolus upper end is sealed, and urceolus lower extreme links firmly with the lower clutch upper end is sealed, the dabber of tubular structure is equipped with to the urceolus inner sleeve cover, dabber lower extreme sealed suit is in the lower clutch, and the suit and the spring lower extreme of upper positioning in the dabber carries out down the location through the lower clutch, the dabber makes its upper end support under the initial thrust effect of spring on the lower terminal surface of top connection, the equipartition has a plurality of relief holes on the outer circumference wall of urceolus upper end, the system has the annular on the outer circumference wall of dabber upper end, and the circumference equipartition has a plurality of bar holes with dabber hole intercommunication on the annular groove wall, the dabber moves down to relief hole and annular intercommunication when the internal pressure of dabber is greater than the initial thrust of spring to the dabber.
The outer contour of the mandrel is of a ladder-shaped structure, the outer diameter of the upper end of the ladder-shaped structure is larger than that of the lower end of the ladder-shaped structure, the large-diameter section of the upper end of the mandrel is sealed in the outer cylinder through two groups of sealing rings, the inner hole opening of the pressure relief hole is positioned between the two groups of sealing rings, and the sealing rings used for being in contact sealing with the inner wall of the lower joint are arranged on the outer wall of the lower end of the mandrel.
Further, an adjusting gasket positioned below the spring is sleeved on the mandrel, the lower end of the spring is positioned downwards through the cooperation of the adjusting gasket and the lower joint, and the initial thrust of the spring to the mandrel is adjusted by changing the position of the adjusting gasket on the mandrel; the step surface formed by the large-diameter section and the small-diameter section of the mandrel is positioned upwards to face the spring.
Further, the flow area formed by the plurality of strip-shaped holes is larger than that of the inner hole of the mandrel.
Further, the external thread at the lower end of the upper joint is fixedly connected with the screw hole at the upper end of the outer cylinder in an adapting way, and the outer wall of the lower end of the upper joint is provided with a sealing ring which is contacted with the inner wall of the upper end of the outer cylinder and is positioned below the threaded connection position of the upper joint and the outer cylinder.
Further, a screw hole at the lower end of the outer cylinder is fixedly connected with the upper end of the lower joint through threads, and a sealing ring which is in contact with the inner wall of the lower end of the outer cylinder and is positioned above the threaded connection position of the lower joint and the outer cylinder is arranged on the outer wall of the upper end of the lower joint.
Further, the upper end of the outer cylinder is in threaded connection with an upper anti-loosening screw plug of which the inner end part is matched with the guide groove on the outer wall of the upper joint, and the upper anti-loosening screw plug is positioned above the connecting position of the outer cylinder and the upper joint thread; the lower end of the outer cylinder is in threaded connection with a lower anti-loosening screw plug of which the inner end is adapted to the guide groove on the outer wall of the lower joint, and the lower anti-loosening screw plug is positioned below the connecting position of the outer cylinder and the upper joint.
Compared with the prior art, the utility model has the advantages that:
1. according to the technical scheme, through optimizing the pressure limiting structure, the potential safety hazard problem caused by overhigh pressure in the pipe column when a tool, an oil pipe, a drill rod and the like are operated underground is solved, the stable reliability of the liquid pressure in the pipe column when the tool works underground is ensured, and the faults of the practical tool are reduced;
2. according to the technical scheme, the position of the adjusting gasket on the mandrel is changed by rotating the upper joint and the lower joint, so that the initial thrust of the spring to the mandrel is adjusted, the internal pressure in the mandrel is adjusted, the use requirements of different internal pressure ranges are met, the application range is wide, and the internal pressure limiting range is convenient to adjust;
3. the technical scheme has the advantages of stable and reliable use, simplified structure, low cost, wide application range, automatic triggering when reaching preset pressure, high and simple operation precision and wide application prospect.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
fig. 2 is a schematic diagram of the novel structure used in the present utility model.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1-2 of the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
1-2, the pressure limiting valve device for petroleum underground operation comprises an upper joint 1, an outer barrel 2, a mandrel 3 and a lower joint 6, wherein the lower end of the upper joint 1 is fixedly connected with the upper end of the outer barrel 2 in a sealing way, the lower end of the outer barrel 2 is fixedly connected with the upper end of the lower joint 6 in a sealing way, the mandrel 3 with a tubular structure is sleeved in the lower joint 6 in a sealing way, the lower end of a spring 4 sleeved and positioned on the mandrel 3 is positioned downwards through the lower joint 6, the upper end of the mandrel 3 is abutted against the lower end face of the upper joint 1 under the action of the initial thrust of the spring 4, a plurality of pressure relief holes 7 are uniformly distributed on the outer circumferential wall of the upper end of the outer barrel 2, a circular groove 8 is formed in the outer circumferential wall of the upper end of the mandrel 3, a plurality of strip-shaped holes 9 communicated with the inner holes of the mandrel 3 are uniformly distributed on the circular groove wall of the circular groove 8, and the pressure of the mandrel 3 is larger than that when the spring 4 pushes the mandrel 3 downwards to the initial thrust of the mandrel 3; in the structure, through optimizing the pressure limiting structure, the potential safety hazard problem caused by overhigh pressure in the pipe column when a tool, an oil pipe, a drill rod and the like are operated underground is solved, the stable reliability of the liquid pressure in the pipe column when the underground operation is ensured, and the faults of the practical tool are reduced;
the specific structure of the mandrel 3 is as follows: the outer contour of the mandrel 3 is of a ladder-shaped structure, the outer diameter of the upper end of the ladder-shaped structure is larger than that of the lower end of the ladder-shaped structure, the large-diameter section of the upper end of the mandrel 3 is sealed in the outer cylinder 2 through two groups of sealing rings 10, the inner hole opening of the pressure relief hole 7 is positioned between the two groups of sealing rings 10, and the sealing rings 10 used for being in contact sealing with the inner wall of the lower joint 6 are arranged on the outer wall of the lower end of the mandrel 3.
The mandrel 3 is sleeved with an adjusting gasket 5 positioned below the spring 4, the lower end of the spring 4 is positioned downwards through the cooperation of the adjusting gasket 5 and the lower joint 6, and the initial thrust of the spring 4 to the mandrel 3 is adjusted by changing the position of the adjusting gasket 5 on the mandrel 3; the step formed by the large-diameter section and the small-diameter section of the mandrel 3 faces the spring 4 to be positioned upwards; specifically, the flow area formed by the plurality of strip-shaped holes 9 is larger than the flow area of the inner hole of the mandrel 3.
The screw thread fixing and connecting structure of the upper joint 1 and the outer cylinder 2 is specifically as follows: the external thread at the lower end of the upper joint 1 is fixedly connected with the screw hole at the upper end of the outer cylinder 2 in an adapting way, and the outer wall of the lower end of the upper joint 1 is provided with a sealing ring 10 which is contacted with the inner wall of the upper end of the outer cylinder 2 and is positioned below the threaded connection position of the upper joint 1 and the outer cylinder 2.
The sealing and fixedly connecting structure of the outer cylinder 2 and the lower joint 6 is as follows: the screw hole at the lower end of the outer barrel 2 is fixedly connected with the upper end of the lower joint 6 through threads, and the outer wall of the upper end of the lower joint 6 is provided with a sealing ring 10 which is contacted with the inner wall of the lower end of the outer barrel 2 and is positioned above the threaded connection position of the lower joint 6 and the outer barrel 2.
In order to loosen the threaded connection of the outer cylinder 2 with the upper joint 1 and the lower joint 6, an upper anti-loosening screw plug 11 with an inner end part matched with a guide groove on the outer wall of the upper joint 1 is specially connected with the upper end of the outer cylinder 2 in a threaded manner, and the upper anti-loosening screw plug 11 is positioned above the connecting position of the outer cylinder 2 and the upper joint 1; the lower end of the outer cylinder 2 is in threaded connection with a lower anti-loosening screw plug 12, the inner end part of the lower anti-loosening screw plug is adapted to the guide groove on the outer wall of the lower joint 6, and the lower anti-loosening screw plug 12 is positioned below the connecting position of the outer cylinder 2 and the upper joint 1; in the structure, the position of the adjusting gasket 5 on the mandrel 3 is changed by rotating the upper connector 1 and the lower connector 6, so that the initial thrust of the spring 4 on the mandrel 2 is adjusted, the adjustment of the internal pressure of the mandrel 2 is achieved, the use requirements of different internal pressure ranges are met, the application range is wide, the internal pressure limiting range is convenient to adjust, the guide grooves on the outer wall of the upper connector 1 and the guide grooves on the outer wall of the lower connector 6 are annular structures, when the upper connector 1 and the lower connector 6 are adjusted, the upper connector 1 and the lower connector 6 are rotated again, the position of the adjusting gasket 5 on the mandrel 3 is indirectly adjusted for adjusting the distance between the upper connector 1 and the lower connector 6, the adjustment of the initial compression of the spring 4 is achieved, and the adjustment of different values of the internal pressure of the mandrel 3 is completed.
Working principle: the spring 4 is used for pushing the mandrel 3 upwards in a free state, when the internal pressure acts on a group of pressure difference surfaces on the mandrel 3 (namely, the annular surface acted on the annular groove 8 through a plurality of strip-shaped holes 9) to generate thrust force which is larger than that of the spring 4 acting on the mandrel 3, the spring 4 is continuously compressed, the mandrel 3 descends, when the mandrel 3 moves downwards to the annular groove 8 to be communicated with the pressure relief hole 7 on the outer cylinder 2, the mandrel 3 is communicated with the outside of the outer cylinder 2, the internal pressure is released, and as the pressure is released, the mandrel 3 moves upwards by virtue of the pressure difference to reduce the thrust force generated by the mandrel 3, and when the thrust force is smaller than that of the spring 4 acting on the mandrel 3, the pressure relief hole 7 on the outer cylinder 2 is closed, so that the reciprocating cycle is used for controlling the internal pressure; the adjusting gasket 5 is used for adjusting the initial thrust of the spring 4 to the mandrel 3 so as to control the internal pressure; the lower end of the lower joint 6 is provided with a drill rod buckle male thread, and the upper end is connected with the outer cylinder 2, and the diameter is full.
Taking flushing head flushing as an example, the well is cleared by a well-logging gauge in front of the well, the upper end is connected with a releasing tool, the lower end is connected with the flushing head, the flushing head is arranged at a preset position, the fluid circulation is conducted, the inner diameter of the sleeve is flushed by means of the impact force of the throttling differential pressure jet flow generated by the flushing head, the discharge capacity is continuously increased at the moment, the pressure is increased, and when the pressure set by the pressure limiting valve is reached, the pressure limiting valve is triggered to work.
Examples: the flushing operation is carried out by adopting a flushing head, the flushing head is 12 holes, the diameter of the flushing head is a jet hole of 2.5mm, the pressure limiting valve is used for assisting operation, the pressure limiting valve is set to be 35MPa, a high-pressure pump truck and a hydraulic truck are positioned, a phi 118mm multiplied by 1.0mm drift diameter gauge is used for checking the well diameter, then the well diameter is reduced to a preset 2700m, circulating liquid is pumped into the drift diameter, the discharge capacity is 200L/min, a throttling pressure difference of 1.89MPa is generated, the flushing head is continuously pressurized to 800L/min, a throttling pressure difference of 30MPa is generated, when the flushing head is added to 860L/min, the pressure limiting valve is triggered to work at the moment, the pressure is rapidly discharged, the discharge capacity is repeatedly increased to 860L/min, the pressure is rapidly discharged, and the design of the pressure limiting valve achieves the expected effect.
The technical scheme has the advantages of stable and reliable use, simplified structure, low cost, wide application range, automatic triggering when reaching preset pressure, high and simple operation precision and wide application prospect.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a pressure limiting valve device for petroleum borehole operation, includes top connection (1), urceolus (2), dabber (3) and lower clutch (6), top connection (1) lower extreme is sealed to be linked firmly with urceolus (2) upper end, and urceolus (2) lower extreme is sealed to be linked firmly with lower clutch (6) upper end, dabber (3) of tubular structure are equipped with to seal in urceolus (2), its characterized in that: the utility model discloses a pressure relief device for the inner pressure of the mandrel, including dabber (3), annular groove (8) are made on the outer circumference wall of dabber (3), and the suit is gone up and is located spring (4) lower extreme on dabber (3) in lower joint (6), the lower extreme of dabber (3) is gone up and is passed through lower joint (6) and is fixed a position down, dabber (3) make its upper end support on the lower terminal surface of nipple (1) under the initial thrust effect of spring (4), equipartition has a plurality of relief holes (7) on the outer circumference wall of urceolus (2), system has annular (8) on the outer circumference wall of dabber (3), and the circumference equipartition has a plurality of bar hole (9) with dabber (3) hole intercommunication on annular (8) cell wall, dabber (3) internal pressure is greater than dabber (3) move down to relief hole (7) and annular (8) intercommunication pressure release when spring (4) to the initial thrust of dabber (3).
2. The pressure limiting valve device for petroleum downhole operations of claim 1, wherein: the outer contour of the mandrel (3) is of a ladder-shaped structure with the outer diameter of the upper end being larger than that of the lower end, the large-diameter section of the upper end of the mandrel (3) is sealed in the outer cylinder (2) through two groups of sealing rings (10), the inner hole opening of the pressure relief hole (7) is positioned between the two groups of sealing rings (10), and the sealing rings (10) used for being in contact with and sealing with the inner wall of the lower joint (6) are arranged on the outer wall of the lower end of the mandrel (3).
3. The pressure limiting valve device for petroleum downhole operations of claim 2, wherein: an adjusting gasket (5) positioned below the spring (4) is sleeved on the mandrel (3), the lower end of the spring (4) is positioned downwards through the matching of the adjusting gasket (5) and the lower joint (6), and the spring (4) adjusts the initial thrust of the mandrel (3) by changing the position of the adjusting gasket (5) on the mandrel (3); the step surface formed by the large-diameter section and the small-diameter section of the mandrel (3) is positioned upwards to face the spring (4).
4. A pressure limiting valve apparatus for petroleum downhole operations as defined in claim 3, wherein: the flow area formed by the plurality of strip-shaped holes (9) is larger than that of the inner hole of the mandrel (3).
5. The pressure limiting valve apparatus for petroleum downhole operations according to any one of claims 1 to 4, wherein: the external thread at the lower end of the upper joint (1) is fixedly connected with the screw hole at the upper end of the outer barrel (2) in an adapting way, and the outer wall of the lower end of the upper joint (1) is provided with a sealing ring (10) which is contacted with the inner wall of the upper end of the outer barrel (2) and is positioned below the threaded connection position of the upper joint (1) and the outer barrel (2).
6. The pressure limiting valve device for petroleum downhole operations of claim 5, wherein: screw holes at the lower end of the outer cylinder (2) are fixedly connected with the upper end of the lower joint (6) through threads, and a sealing ring (10) which is in contact with the inner wall of the lower end of the outer cylinder (2) and is positioned above the threaded connection position of the lower joint (6) and the outer cylinder (2) is arranged on the outer wall of the upper end of the lower joint (6).
7. The pressure limiting valve apparatus for petroleum downhole operations of claim 6, wherein: an upper anti-loosening screw plug (11) with an inner end part matched with the guide groove on the outer wall of the upper joint (1) is connected with the upper end of the outer barrel (2) in a threaded manner, and the upper anti-loosening screw plug (11) is positioned above the connecting position of the outer barrel (2) and the upper joint (1) in a thread manner; the lower end of the outer cylinder (2) is in threaded connection with a lower anti-loosening screw plug (12) of which the inner end part is adapted to the guide groove on the outer wall of the lower joint (6), and the lower anti-loosening screw plug (12) is positioned below the connecting position of the outer cylinder (2) and the upper joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321579973.6U CN220133948U (en) | 2023-06-20 | 2023-06-20 | Pressure limiting valve device for petroleum underground operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321579973.6U CN220133948U (en) | 2023-06-20 | 2023-06-20 | Pressure limiting valve device for petroleum underground operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220133948U true CN220133948U (en) | 2023-12-05 |
Family
ID=88964174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321579973.6U Active CN220133948U (en) | 2023-06-20 | 2023-06-20 | Pressure limiting valve device for petroleum underground operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220133948U (en) |
-
2023
- 2023-06-20 CN CN202321579973.6U patent/CN220133948U/en active Active
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