CN210068031U - Automatic flow plug used in oil well casing - Google Patents
Automatic flow plug used in oil well casing Download PDFInfo
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- CN210068031U CN210068031U CN201920455211.2U CN201920455211U CN210068031U CN 210068031 U CN210068031 U CN 210068031U CN 201920455211 U CN201920455211 U CN 201920455211U CN 210068031 U CN210068031 U CN 210068031U
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- connecting pipe
- well casing
- oil well
- choke
- flow blocking
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Abstract
The utility model discloses an automatic spoiler for in oil well casing, include: the first connecting pipe, the flow blocking device and the second connecting pipe; the flow resisting device is sleeved and fixedly connected outside the first connecting pipe; the outer wall of the flow blocking device is provided with an annular groove, and a sealing sleeve is sleeved in the groove; the flow blocking device is provided with flow blocking holes penetrating through the upper surface and the lower surface of the flow blocking device, and a sealing device for sealing the flow blocking holes is arranged at the bottom end orifice of the flow blocking holes; the second connecting pipe is fixedly connected to the bottom end of the first connecting pipe and communicated with the first connecting pipe. The utility model is not only simple in structure, low cost, can also effectually prevent the outflow of liquid and gas in the oil well, cause the pollution to the environment, and do not influence oil well-flushing, test etc..
Description
Technical Field
The utility model discloses oil development equipment technical field, more specifically the saying so relates to a be used for the interior automatic spoiler of oil well casing.
Background
In order to facilitate the testing and recording of various underground data, part of oil wells adopt eccentric wellhead structures in the production process of oil fields, so that the purpose of testing tools underground is facilitated. And a large amount of gas is contained in the oil well casing, and oil liquid flows out of the oil well casing, so that not only is resource waste caused, but also the environment is polluted.
However, in the prior art, due to the special structure of the eccentric wellhead, the choke cannot well prevent liquid and other materials from flowing out, and the choke is easy to cause inconvenience to well washing, liquid level testing and the like of an oil well.
Therefore, the technical personnel in the field need to solve the problem of how to provide an automatic choke in an oil well casing, which has a simple structure and low cost, effectively prevents the liquid and gas in an oil well from flowing out, and does not influence the well washing, the testing and the like of the oil well.
Disclosure of Invention
In view of this, the utility model provides a simple structure, low cost effectively prevent the automatic spoiler of sleeve pipe of the outflow of liquid and gas in the oil well.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic choke for use within an oil well casing, comprising:
a first connecting pipe;
the flow blocking device is sleeved and fixedly connected outside the first connecting pipe; the outer wall of the flow blocking device is provided with an annular groove, and a sealing sleeve is sleeved in the groove; the flow blocking device is provided with flow blocking holes penetrating through the upper surface and the lower surface of the flow blocking device, and a sealing device for sealing the flow blocking holes is arranged at an orifice at the bottom end of the flow blocking hole;
a second connecting pipe; the second connecting pipe is fixedly connected to the bottom end of the first connecting pipe and communicated with the first connecting pipe.
The utility model has the advantages that: the utility model discloses automatic choke is vertical arranges the position about 10 meters apart from oil well head below in, and it sets up in the oil well cover to the last oil pipe in first connecting pipe intercommunication oil well cover, the lower oil pipe in second connecting pipe intercommunication oil well cover, choke device cover establish and fixed connection in outside the first connecting pipe, and choke device's seal cover closely laminates with the oil well sleeve pipe. When the gas in the oil well casing is excessive and flows upwards from the bottom, the sealing device on the choke hole prevents the gas from flowing out, so that the environment is prevented from being polluted.
Further, the sealing device comprises a fixing piece and a sealing cover, the fixing piece is located below the flow blocking device and fixedly mounted on the lower surface of the flow blocking device, a sliding hole is formed in the fixing piece, the sealing cover is rotatably connected with the fixing piece through the sliding hole between the first position and the second position, and the sealing cover covers the flow blocking hole at the second position.
Furthermore, the included angle between the connecting line between the central point of the flow blocking hole and the central point of the wellhead and the vertical direction is less than or equal to 27 degrees.
Further, the outer surface of the sealing cover is covered with a foam plastic layer.
Further, the outer surface of the sealing cover is set to be an arc-shaped surface.
Further, the outer surface of the sealing cover is adapted to the shape of the second connecting pipe.
The further beneficial effects are as follows: when the gas in the oil well casing is excessive and flows upwards from the bottom, great impact force is generated when the gas quantity is large, so that the sealing cover rotates to the second position to cover the flow blocking hole, and the gas is prevented from flowing out to pollute the environment; or when oil flows out of the oil well casing, the upward flow causes huge buoyancy, the sealing cover is rotated to the second position to cover the flow blocking hole, and the liquid can be prevented from flowing out to cause environmental pollution.
Further, a liquid retention zone is arranged at the top of the flow blocking device.
Further, the first connecting pipe is a tubing coupling.
Further, the second connecting pipe is an oil pipe short section.
Further, the inner surface of the first connecting pipe is provided with threads.
Further, the outer surface of the second connecting pipe is provided with threads.
According to the technical solution, compared with the prior art, the utility model discloses an automatic choke for use in oil well casing. The utility model discloses automatic choke is vertical arranges the position about 10 meters apart from oil well head below in, and it sets up in the oil well cover to the last oil pipe in first connecting pipe intercommunication oil well cover, the lower oil pipe in second connecting pipe intercommunication oil well cover, choke device cover establish and fixed connection in outside the first connecting pipe, and choke device's seal cover closely laminates with the oil well sleeve pipe.
When the gas in the oil well casing is excessive and flows upwards from the bottom, the sealing device on the choke hole prevents the gas from flowing out, so that the environment is prevented from being polluted. Obviously, the utility model is used for the automatic spoiler in the oil well sleeve pipe, simple structure, low cost not only, and can effectually prevent that gas and liquid in the oil well sleeve pipe from flowing, cause the pollution to the environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the bottom view of the automatic choke in the casing of the oil well according to the present invention;
fig. 2 is a schematic diagram illustrating a top view of an automatic choke for use in an oil well casing according to the present invention.
FIG. 3 is a schematic structural diagram of an automatic choke for use in an oil well casing according to the present invention;
FIG. 4 is a schematic structural diagram of an automatic choke for use in an oil well casing according to the present invention;
FIG. 5 is an exploded view of the sealing device of the present invention used in an automatic choke in an oil well casing;
FIG. 6 is a schematic structural diagram of a sealing device for an automatic choke in an oil well casing according to the present invention;
in the drawings: 1. a first connecting pipe; 2. a flow blocking device; 21. a groove; 22. sealing sleeves; 23. a choke hole; 24. a sealing device; 241. a fixing member; 242. a sealing cover; 243. a slide hole; 25. a body stagnation zone; 3. a second connecting pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, the present embodiment is an automatic choke for use in a well casing, comprising:
a first connecting pipe 1;
the flow blocking device 2 is sleeved and fixedly connected outside the first connecting pipe 1; an annular groove 21 is formed in the outer wall of the flow blocking device 2, and a sealing sleeve 22 is sleeved in the groove 21; a choke hole 23 penetrating through the upper surface and the lower surface of the choke device 2 is formed in the choke device 2, and a sealing device 24 for sealing the choke hole 23 is arranged at the bottom end orifice of the choke hole 23;
a second connection pipe 3; the second connecting pipe 3 is fixedly connected to the bottom end of the first connecting pipe 1 and is communicated with the first connecting pipe 1.
The utility model discloses automatic choke is vertical arranges the position about 10 meters apart from oil well head below in, and it sets up in the oil well cover to the last oil pipe in first connecting pipe intercommunication oil well cover, the lower oil pipe in second connecting pipe intercommunication oil well cover, choke device cover establish and fixed connection in outside the first connecting pipe, and choke device's seal cover closely laminates with the oil well sleeve pipe. When the gas in the oil well casing is excessive and flows upwards from the bottom, the sealing device on the choke hole prevents the gas from flowing out, so that the environment is prevented from being polluted.
As shown in fig. 5 and 6, the sealing device 24 includes a fixing member 241 and a sealing cover 242, the fixing member 241 is located below the choke device 2 and fixedly mounted on the lower surface of the choke device 2, a sliding hole 243 is provided on the fixing member 241, the sealing cover 242 is rotatably connected with the fixing member 241 through the sliding hole 243 between a first position and a second position, and the sealing cover 242 covers the choke hole 23 in the second position.
Advantageously, the outer surface of the sealing cover 242 is provided as an arc-shaped face; the arc-shaped surface is adapted to the shape of the outer surface of the oil pipe in the oil well casing which is connected by the second connecting pipe 3 in a threaded manner.
After the installation, the outer surface of the sealing cover is matched with the outer surface shape of the oil pipe in the oil well casing which is connected by the second connecting pipe 3 in a threaded mode. When the gas in the well casing is excessive and flows upward from the bottom, the gas generates an impulse that causes the sealing cap 242 to flip upward, covering the choke hole 23. When oil in the well casing leaks out and flows upward from the bottom, the oil produces buoyancy which causes the cap 242 to flip upward, covering the choke hole 23.
Advantageously, the included angle between the connecting line between the central point of the choke hole and the central point of the wellhead and the vertical direction is less than or equal to 27 degrees.
Advantageously, the outer surface of the sealing cover 242 is covered with a layer of foam plastic. When the gas in the oil well casing is excessive and flows upwards from the bottom, great impact force is generated when the gas quantity is large, so that the sealing cover rotates to the second position to cover the flow blocking hole, and the gas is prevented from flowing out to pollute the environment; or when oil flows out of the oil well casing, the upward flow causes huge buoyancy, the sealing cover is rotated to the second position to cover the flow blocking hole, and the liquid can be prevented from flowing out to cause environmental pollution.
Advantageously, the top of the flow-obstructing means 2 is provided with a liquid stagnation zone 25. The liquid can be slowed down to flow upwards.
Advantageously, the first connection pipe 1 is a tubing coupling.
Advantageously, the second connection pipe 3 is a tubing nipple.
Advantageously, the inner surface of the first connection pipe 1 is provided with a thread.
Advantageously, the outer surface of the second connection pipe 3 is provided with a thread. The oil pipe in the casing can be connected.
The utility model discloses, test in 8000 mouthful of oil well, the effect that obtains:
1. the liquid level test and the well washing of the oil well are not influenced;
2. the pressure measurement is not affected: the test method is characterized in that the instrument actually penetrates smoothly on the ground, and the eccentric pressure gauge is used for entering the well for verification, so that the instrument can smoothly get up and down without obstruction.
3. The gas and liquid in the oil well casing can be effectively prevented from overflowing, so that resource waste and environmental pollution are avoided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An automatic flow resistor for use in an oil well casing, comprising:
a first connecting pipe (1);
the flow blocking device (2) is sleeved and fixedly connected outside the first connecting pipe (1); an annular groove (21) is formed in the outer wall of the flow blocking device (2), and a sealing sleeve (22) is sleeved in the groove (21); a choke hole (23) penetrating through the upper surface and the lower surface of the choke device (2) is formed in the choke device (2), and a sealing device (24) for sealing the choke hole (23) is arranged at the bottom end orifice of the choke hole (23);
a second connecting pipe (3); the second connecting pipe (3) is fixedly connected to the bottom end of the first connecting pipe (1) and communicated with the first connecting pipe (1).
2. An automatic flow plug for use in a well casing according to claim 1, characterized in that the sealing means (24) comprises a fixed member (241) and a sealing cover (242), the fixed member (241) being located below the flow blocking means (2) and being fixedly mounted on the lower surface of the flow blocking means (2), the fixed member (241) being provided with a sliding hole (243), the sealing cover (242) being rotatably connected to the fixed member (241) via the sliding hole (243) between a first position and a second position, the sealing cover (242) covering the flow blocking hole (23) in the second position.
3. An automatic flow plug for use in an oil well casing according to claim 2, characterized in that the outer surface of the sealing cover (242) is covered with a foam layer.
4. An automatic flow plug for use in a well casing according to claim 3, wherein the outer surface of the sealing cap (242) is provided as an arcuate surface.
5. An automatic choke for use in a well casing according to claim 1, characterised in that the top of the choke means (2) is provided with a liquid retention zone (25).
6. An automatic flow plug for use in a well casing according to claim 1, characterized in that the first connection pipe (1) is a tubing coupling.
7. An automatic flow plug for use in an oil well casing according to claim 1, characterized in that the second connection pipe (3) is a tubing nipple.
8. An automatic flow plug for use in a well casing according to claim 1, characterized in that the inner surface of the first connection pipe (1) is provided with a thread.
9. An automatic flow plug for use in a well casing according to claim 1, characterized in that the outer surface of the second connection pipe (3) is provided with a thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455211.2U CN210068031U (en) | 2019-04-04 | 2019-04-04 | Automatic flow plug used in oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455211.2U CN210068031U (en) | 2019-04-04 | 2019-04-04 | Automatic flow plug used in oil well casing |
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| Publication Number | Publication Date |
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| CN210068031U true CN210068031U (en) | 2020-02-14 |
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| CN201920455211.2U Active CN210068031U (en) | 2019-04-04 | 2019-04-04 | Automatic flow plug used in oil well casing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005353A (en) * | 2019-04-04 | 2019-07-12 | 大庆市富隆达石油工程机械设备有限公司 | A kind of automatic flow plug in oil well casing |
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2019
- 2019-04-04 CN CN201920455211.2U patent/CN210068031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005353A (en) * | 2019-04-04 | 2019-07-12 | 大庆市富隆达石油工程机械设备有限公司 | A kind of automatic flow plug in oil well casing |
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