CN219912625U - Impurity-proof detachable oil extraction and gas resin injection valve - Google Patents
Impurity-proof detachable oil extraction and gas resin injection valve Download PDFInfo
- Publication number
- CN219912625U CN219912625U CN202321031921.5U CN202321031921U CN219912625U CN 219912625 U CN219912625 U CN 219912625U CN 202321031921 U CN202321031921 U CN 202321031921U CN 219912625 U CN219912625 U CN 219912625U
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- Prior art keywords
- hole
- sealing
- section
- sealing cover
- grease
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- 238000002347 injection Methods 0.000 title claims abstract description 77
- 239000007924 injection Substances 0.000 title claims abstract description 77
- 239000011347 resin Substances 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 title claims abstract description 18
- 238000000605 extraction Methods 0.000 title abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 136
- 239000004519 grease Substances 0.000 claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000004576 sand Substances 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 16
- 230000001050 lubricating effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Valve Housings (AREA)
Abstract
The utility model relates to an impurity-proof detachable oil and gas production resin injection valve, which comprises: a valve body having a grease injection hole penetrating both ends thereof; a one-way sealing mechanism located in the grease injection hole and allowing grease to be injected into the grease injection hole in one way and blocking the grease of the grease injection hole from flowing out of the grease injection hole in a direction opposite to the injection direction; the first sealing cover is detachably connected with the valve main body and is provided with a pressure relief hole penetrating through the first sealing cover, and one end of the pressure relief hole can be connected with the grease injection hole; the second sealing cover is detachably connected with the first sealing cover, and the second sealing cover plugs the other end of the pressure relief hole in a state of being connected with the first sealing cover. The impurity-proof detachable oil and gas extraction resin injection valve can prevent sand and dust and other impurities from entering the resin injection valve during resin injection, so that the oil and gas extraction resin injection valve has better sealing performance and can prevent leakage.
Description
Technical Field
The utility model relates to the field of well control of oil and gas wells, in particular to an impurity-proof detachable oil and gas production resin injection valve.
Background
In the oil gas exploitation process, the production tree is an important well control device, the most important component of the production tree is a flat gate valve, lubricating grease is required to be injected into the gate valve through a grease injection valve according to well control implementation rules at regular intervals, and on one hand, the lubrication effect and on the other hand, the sealing effect are achieved. The grease injection valve is a one-way valve, and under normal conditions, only grease is allowed to enter the valve body, and oil gas is not allowed to leak to the outside. The grease injection valve is provided with a valve cap, if the grease injection valve leaks, higher pressure exists in the grease injection hole, and for safety, the pressure of the grease injection hole needs to be relieved before grease injection, so that the valve cap is provided with a pressure relief hole. Because the oil field is mostly in the desert area, the sand wind is strong, sand dust very easily gets into between valve cap and the valve body through the pressure release hole of valve cap, thereby pile up around the fat injection hole of annotating the fat valve, when annotating fat next time, if post staff's mishandling does not clear up sand dust impurity around the fat injection hole, then the impurity very easily gets into the fat injection downthehole and then gets into the valve body along with the lubricating grease, this leads to the scene to annotate the fat valve and often appear inefficacy leakage condition, the oil gas spouts from annotating the fat valve, can be changed after the pressure release through closing the inboard valve to some outboard valve annotate the fat valve, but to inboard valve annotate the fat valve and must wait to the back of closing the well and can be changed, annotate the inefficacy leakage of fat valve has influenced the normal notes of valve on the one hand, normal production has been influenced, well control risk has been increased, on the one hand leaked oil gas and high concentration hydrogen sulfide also have constituted the threat to post staff personal safety.
Disclosure of Invention
The utility model provides an impurity-proof detachable oil and gas extraction resin injection valve, which can prevent impurities such as sand dust and the like from entering the oil and gas extraction valve during oil injection, so that the oil and gas extraction resin injection valve has better sealing performance and can prevent leakage.
The utility model relates to an impurity-proof detachable oil and gas production resin injection valve, which comprises:
a valve body having a grease injection hole penetrating both ends thereof;
a one-way sealing mechanism located in the grease injection hole and allowing grease to be injected into the grease injection hole in one way and blocking the grease of the grease injection hole from flowing out of the grease injection hole in a direction opposite to the injection direction;
the first sealing cover is detachably connected with the valve main body and is provided with a pressure relief hole penetrating through the first sealing cover, and one end of the pressure relief hole can be connected with the grease injection hole;
the second sealing cover is detachably connected with the first sealing cover, and the second sealing cover plugs the other end of the pressure relief hole in a state of being connected with the first sealing cover.
Preferably, the first sealing cover comprises a cover top and a cover cylinder positioned on one side of the cover top, the cross section of the inner wall of the cover cylinder is round, the inner wall of the cover cylinder is provided with internal threads, and one end of the valve main body connected with the first sealing cover is cylindrical and is provided with external threads which can be matched with the internal threads of the cover cylinder.
Preferably, the first sealing cover is further provided with a cylindrical protrusion located at the other side of the cover top, the pressure relief hole comprises a first hole section and a second hole section communicated with the first hole section, the first hole section extends along the axial direction, the second hole section is provided with an opening at the side wall of the protrusion, and one end of the first hole section is connected with the grease injection hole in a state that the first sealing cover is connected with the valve main body.
Preferably, the second bore section is perpendicular to the first bore section.
Preferably, the second sealing cover comprises a cover top and a cover cylinder positioned at one side of the cover top, the bulge of the first sealing cover is provided with external threads, the cross section of the inner wall of the cover cylinder of the second sealing cover is round, the inner wall of the cover cylinder of the second sealing cover is provided with internal threads matched with the external threads of the bulge, and in the state that the first sealing cover is matched with the second sealing cover, the inner wall of the cover cylinder of the second sealing cover blocks the opening of the second hole section of the pressure relief hole, which is formed in the side wall of the bulge of the first sealing cover.
Preferably, the grease injecting hole comprises a first hole section and a second hole section which are communicated, the diameter of the first hole section is smaller than that of the second hole section, a sealing step is formed at the joint of the first hole section and the second hole section, the unidirectional sealing mechanism comprises a sealing body, a spring and a spring bracket which are positioned in the second hole section, the spring bracket is detachably connected with the valve main body, one end of the spring abuts against the spring bracket, and the other end of the spring pushes the sealing body towards the direction of the sealing step to enable the sealing body and the sealing step to form sealing fit.
Preferably, the second hole section of the grease injection hole is provided with an internal thread, the spring bracket is cylindrical, the outer wall of the spring bracket is provided with an external thread matched with the internal thread of the second hole section, and the spring bracket is provided with an axially extending oil through hole for grease in the second hole section to pass through.
Preferably, the sealing body is spherical, the unidirectional sealing mechanism further comprises a sealing body bracket, the sealing body bracket is provided with a shape matched with the outer wall of the sealing body, and the other end of the spring abuts against the sealing body bracket.
Preferably, the cross section of the outer wall of the middle part of the valve main body, the cross section of the outer wall of the first sealing cover and the cross section of the outer wall of the second sealing cover are coaxial regular polygons.
Compared with the prior art, the utility model has the following beneficial effects: when the impurity-proof detachable oil and gas extraction resin injection valve is used for injecting grease, the connection between the first sealing cover and the valve main body is firstly released, after the grease injection is completed, the first sealing cover is installed, and the lubricating grease in the grease injection hole is extruded into the pressure release hole under the action of pressure in the process of installing the first sealing cover, so that the pressure of the lubricating grease is released, and if excessive lubricating grease exists, the lubricating grease can flow out of the pressure release hole. Then connect second sealed lid and first sealed lid, the pressure release hole is plugged up to the second sealed lid, can prevent sand and dust from getting into the pressure release hole, so sand and dust also can't reach around the notes fat hole, consequently, in the time of annotating fat not having sand and dust entering notes fat valve.
Drawings
Fig. 1 is a schematic top view of an impurity-proof detachable oil and gas production resin injection valve according to an embodiment of the utility model.
FIG. 2 is a schematic view of a detachable impurity-proof oil and gas production resin injection valve according to an embodiment of the present utility model, taken along line A-A in FIG. 1.
Reference numerals
1 valve body, 11 grease injection hole, 111 first hole section, 112 second hole section, 113 sealing step;
2 one-way sealing mechanism, 21 sealing body, 22 sealing body bracket, 23 spring, 24 spring bracket;
3 a first sealing cover, 31 a pressure relief hole, 311 a first hole section, 312 a second hole section, 32 a cover top, 33 a cover cylinder, 34 a bulge
4 second sealing cover, 41 cover top, 42 cover cylinder.
Detailed Description
The utility model provides an impurity-proof detachable oil and gas production resin injection valve, which is shown in fig. 1 and 2, and comprises a valve main body 1, a one-way sealing mechanism, a first sealing cover 3 and a second sealing cover 4, wherein the valve main body 1 is provided with a resin injection hole 11 penetrating through two ends of the valve main body, as shown in fig. 2. The unidirectional sealing mechanism is located in the grease injecting hole 11 to allow the grease to be injected into the grease injecting hole 11 in one direction and to block the grease of the grease injecting hole 11 from flowing out of the grease injecting hole 11 in the direction opposite to the injection direction. The first sealing cover 3 is detachably connected with the valve main body 1, the first sealing cover 3 is provided with a pressure relief hole 31 penetrating through the first sealing cover 3, and one end of the pressure relief hole 31 can be connected with the grease injecting hole 11. The second sealing cover 4 is detachably connected with the first sealing cover 3, and the second sealing cover 4 blocks the other end of the pressure relief hole 31 in a state of being connected with the first sealing cover 3.
When the impurity-proof detachable oil and gas extraction resin injection valve is used for injecting grease, the second sealing cover 4 is rotated firstly to expose the pressure release hole 31, the grease injection valve is decompressed, after the fact that the grease injection valve is not leaked is confirmed, the second sealing cover 4 is rotated reversely to enable the pressure release hole 31 to be plugged again, sand and dust are prevented from entering the pressure release hole 31, the connection between the first sealing cover 3 and the valve main body 1 is relieved to expose the grease injection hole 11, grease is injected through the grease pump, and after grease injection is completed, the first sealing cover 3 is installed. This prevents sand from entering the pressure release hole 31, and the sand cannot reach the periphery of the grease injection hole 11, so that no sand enters the grease injection valve during grease injection.
As shown in fig. 2, the first sealing cover 3 includes a cover top 32 and a cover barrel 33 located at one side of the cover top 32, the cross section of the inner wall of the cover barrel 33 is circular, the inner wall of the cover barrel 33 has internal threads, one end of the valve body 1 connected with the first sealing cover 3 is cylindrical and has external threads which can be matched with the internal threads of the cover barrel 33, and the first sealing cover 3 is detachably connected with the valve body 1 through threaded connection.
The first sealing cap 3 further includes a cylindrical protrusion 34 on the other side of the cap top 32, and in this embodiment, the cap top 32, the cap barrel 33 and the protrusion 34 are integrally formed. The pressure relief hole 31 comprises a first hole section 311 and a second hole section 312 communicated with the first hole section 311, the first hole section 311 extends along the axial direction of the cover cylinder 33 of the first sealing cover 3, the second hole section 312 is provided with an opening on the side wall of the bulge 34, namely, an included angle is formed between the second hole section 312 and the first hole section 311, so that sand and dust are more difficult to reach the grease injection hole 11 through the pressure relief hole 31. In this embodiment, the second hole section 312 is perpendicular to the first hole section 311.
In the present embodiment, the diameter of the projection 34 is smaller than the inner diameter of the cap barrel 33 of the first seal cap 3. The second sealing cover 4 comprises a cover top 41 and a cover cylinder 42 extending from the cover top 41 of the second sealing cover 4 to one side of the cover top, the protrusion 34 of the first sealing cover 3 is provided with external threads, the cross section of the inner wall of the cover cylinder 42 of the second sealing cover 4 is circular, the inner wall of the cover cylinder 42 of the second sealing cover 4 is provided with internal threads matched with the external threads of the protrusion 34, and the inner diameter of the cover cylinder 42 of the second sealing cover 4 is smaller than the inner diameter of the cover cylinder 33 of the first sealing cover 3. Through threaded connection, the first sealing cover 3 and the second sealing cover 4 realize detachable connection, and in the state that the first sealing cover 3 is matched with the second sealing cover 4, the inner wall of the cover cylinder 42 of the second sealing cover 4 blocks the opening of the second hole section 112 of the pressure relief hole 31 formed on the side wall of the protrusion 34 of the first sealing cover 3.
The grease injecting hole 11 comprises a first hole section 111 and a second hole section 112 which are communicated, the first hole section 111 and the second hole section 112 are coaxial, the diameter of the first hole section 111 is smaller than that of the second hole section 112, a sealing step 113 is formed at the joint of the first hole section 111 and the second hole section 112, the one-way sealing mechanism comprises a sealing body 21, a spring 23 and a spring bracket 24 which are positioned in the second hole section 112, the spring bracket 24 is detachably connected with the valve main body 1, one end of the spring 23 is abutted against the spring bracket 24, and the other end pushes the sealing body 21 towards the direction of the sealing step 113 so that the sealing body 21 and the sealing step 113 can form sealing fit. When injecting grease, the grease pushes the sealing body 21 to leave the sealing step 113 against the force of the spring 23 under the action of the pressure of the oil pump, the unidirectional sealing mechanism is opened, and the grease enters the second hole section 112 from the first hole section 111. After the grease injection is finished, the sealing body 21 is restored to the position matched with the sealing step 113 under the action of the spring 23, and the unidirectional sealing mechanism is closed.
The second hole section 112 of the grease injecting hole 11 is provided with an internal thread, the spring bracket 24 is cylindrical, the outer wall of the spring bracket 24 is provided with an external thread matched with the internal thread of the second hole section 112, and the spring bracket 24 is provided with an axially extending oil through hole for the grease in the second hole section 112 to pass through. The spring bracket 24 is detachable, and the spring bracket 24 can be detached to replace the sealing ball or the spring 23 when overhauling. In this embodiment, the spring bracket 24 is a socket head cap screw having an axial oil hole.
The sealing body 21 is spherical, the grease injection valve further comprises a sealing body bracket 22, the sealing body bracket 22 is provided with a shape matched with the outer wall of the sealing body 21, and the other end of the spring 23 is propped against the sealing body bracket 22. The seal carrier 22 provides a stable support for the seal 21, thereby stabilizing the force of the spring 23 against the seal 21.
As shown in fig. 1, the cross section of the outer wall of the middle part of the valve main body 1, the cross section of the outer wall of the first sealing cover 3 and the cross section of the outer wall of the second sealing cover 4 are coaxial regular polygons, in this embodiment, regular hexagons, so that a force for rotating the valve main body by a wrench can be applied thereto. Meanwhile, the other end of the valve body 1 is cylindrical and is provided with external threads, and can be connected with a flat gate valve of a christmas tree through the threads. The middle part of the valve body 1 protrudes radially outwards with respect to the cylindrical shape at both ends thereof, facilitating gripping by a wrench.
The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent substitutions of the utility model will occur to those skilled in the art, which are within the spirit and scope of the utility model.
Claims (9)
1. An impurity-proof detachable oil and gas production resin injection valve, which is characterized by comprising:
a valve body having a grease injection hole penetrating both ends thereof;
a one-way sealing mechanism located in the grease injection hole and allowing grease to be injected into the grease injection hole in one way and blocking the grease of the grease injection hole from flowing out of the grease injection hole in a direction opposite to the injection direction;
the first sealing cover is detachably connected with the valve main body and is provided with a pressure relief hole penetrating through the first sealing cover, and one end of the pressure relief hole can be connected with the grease injection hole;
the second sealing cover is detachably connected with the first sealing cover, and the second sealing cover plugs the other end of the pressure relief hole in a state of being connected with the first sealing cover.
2. The grease injection valve according to claim 1, wherein the first sealing cap comprises a cap top and a cap barrel located on one side of the cap top, the cross section of the inner wall of the cap barrel is circular, the inner wall of the cap barrel is provided with internal threads, and the end of the valve body connected with the first sealing cap is cylindrical and is provided with external threads which can be matched with the internal threads of the cap barrel.
3. The grease injection valve according to claim 2, wherein the first sealing cap is further provided with a cylindrical protrusion located at the other side of the cap top, the pressure release hole comprises a first hole section and a second hole section communicated with the first hole section, the first hole section extends along the axial direction, the second hole section is provided with an opening at the side wall of the protrusion, and one end of the first hole section is connected with the grease injection hole in a state that the first sealing cap is connected with the valve main body.
4. A grease injection valve according to claim 3, wherein the second bore section is perpendicular to the first bore section.
5. A grease injection valve according to claim 3, wherein the second sealing cover comprises a cover top and a cover barrel positioned at one side of the cover top, the protrusion of the first sealing cover is provided with external threads, the cross section of the inner wall of the cover barrel of the second sealing cover is circular, the inner wall of the cover barrel of the second sealing cover is provided with internal threads matched with the external threads of the protrusion, and the inner wall of the cover barrel of the second sealing cover blocks the opening formed in the side wall of the protrusion of the first sealing cover by the second hole section of the pressure relief hole in the state that the first sealing cover is matched with the second sealing cover.
6. The grease injection valve of any one of claims 1-5, wherein the grease injection hole comprises a first hole section and a second hole section which are communicated, the diameter of the first hole section is smaller than that of the second hole section, a sealing step is formed at the joint of the first hole section and the second hole section, the unidirectional sealing mechanism comprises a sealing body positioned in the second hole section, a spring and a spring bracket, the spring bracket is detachably connected with the valve body, one end of the spring is propped against the spring bracket, and the other end of the spring pushes the sealing body towards the sealing step so that the sealing body and the sealing step can form sealing fit.
7. The grease injection valve of claim 6, wherein the second bore section of the grease injection bore is provided with internal threads, the spring carrier is cylindrical, the outer wall of the spring carrier is provided with external threads which mate with the internal threads of the second bore section, and the spring carrier has an axially extending oil passage bore through which grease within the second bore section passes.
8. The grease injection valve of claim 6, wherein the seal is spherical and the unidirectional seal mechanism further comprises a seal carrier having a shape that fits against an outer wall of the seal, the other end of the spring abutting the seal carrier.
9. The fat injection valve defined in any one of claims 1-5, wherein the cross-section of the outer wall of the central portion of the valve body, the cross-section of the outer wall of the first seal cap and the cross-section of the outer wall of the second seal cap are coaxial regular polygons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321031921.5U CN219912625U (en) | 2023-05-04 | 2023-05-04 | Impurity-proof detachable oil extraction and gas resin injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321031921.5U CN219912625U (en) | 2023-05-04 | 2023-05-04 | Impurity-proof detachable oil extraction and gas resin injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219912625U true CN219912625U (en) | 2023-10-27 |
Family
ID=88424662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321031921.5U Active CN219912625U (en) | 2023-05-04 | 2023-05-04 | Impurity-proof detachable oil extraction and gas resin injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219912625U (en) |
-
2023
- 2023-05-04 CN CN202321031921.5U patent/CN219912625U/en active Active
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