CN214836233U

CN214836233U - Wellhead leakage-proof device for oil extraction

Info

Publication number: CN214836233U
Application number: CN202120099648.4U
Authority: CN
Inventors: 胡伟; 张蕾; 汤强
Original assignee: Shandong Tianhou Petroleum Technology Co ltd
Current assignee: Shandong Tianhou Petroleum Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-11-23
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a well head leak protection device for oil extraction, which comprises a top cover, a bottom box, an external sealing ring, a sealing cover, a sealing top plate, an overhead leak protection hole and a bottom leak protection hole, wherein the bottom outer wall of the top cover is fixedly connected with the bottom box for a circle, the bottom box is fixedly connected with a well body close to the middle inner wall for a circle, the well body is provided with an oil cavity for a circle, the top end of the well body is fixedly connected with a discharge pipe, the middle section of the discharge pipe is fixedly connected with the top cover, the top end of the top cover is fixedly connected with the sealing cover through the outer wall of the discharge pipe for a circle, the top end of the sealing cover is fixedly connected with the external sealing ring through the outer wall of the discharge pipe for a circle, the top end of the inner wall of the top cover is fixedly connected with the sealing top plate, the left side and the right side of the top end of the top cover are sequentially provided with the overhead leak protection hole, relating to the technical field of well head leak protection device and improving the stable leak protection capability when the device is applied to the impact pressure, and the infiltration pollution of the area below the surface of the wellhead to the surrounding environment after the device is arranged for a long time is relieved.

Description

Wellhead leakage-proof device for oil extraction

Technical Field

The utility model relates to a well head leak protection device technical field specifically is a well head leak protection device for oil recovery.

Background

The well is drilled by a well distribution system planned according to the development of an oil field, the oil rises from the bottom to a channel of a well head, the oil well is drilled by a well drilling method, after the oil layer is drilled, an oil layer casing is put into the general oil well, oil well cement is injected into an annular space between the casing and the well wall to maintain the well wall and seal oil, gas and water layers, then the oil layer is shot by a perforating gun according to the requirements of the development of the oil field to form the channel, an oil pipe is put into the general oil well, the oil rises from the bottom to the well head of the oil well by a proper flow inducing method, and a plurality of auxiliary device equipment, such as a well head leakage-proof device, are needed when the oil well zone is arranged and operated, but the traditional well head leakage-proof device still has a plurality of problems when in use.

Traditional wellhead leak protection devices exist: 1. because the real-time flow of well head when transmission and oil extraction all is different, so can bring different impact pressure, the leak protection effect just can not be enough problem when leak protection device faces too big pressure. 2. Because the wellhead area is in an open or closed state for a long time, after the leakage-proof device is arranged for a long time, the wellhead and the leakage-proof device can cause the problem of area pollution due to oil infiltration.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be not enough to prior art, the utility model provides a well head leak protection device for oil recovery has promoted the stable leak protection ability when the device deals with the percussion pressure not, has alleviated the device and has set up the infiltration of the following region of back well head earth's surface for a long time and pollute all ring edge borders.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a well head leak protection device for oil recovery, includes overhead guard, under casing, external sealing ring, sealed lid, sealed roof, overhead leak protection hole and end and puts the leak protection hole, top guard bottom outer wall a week fixedly connected with under casing, the under casing is close to middle-end department inner wall a week fixed connection well body, well body inner wall a week is equipped with the oil pocket, well body top fixedly connected with discharge pipe, discharge pipe middle-section department fixed connection overhead guard, discharge pipe outer wall a week fixedly connected with is sealed on the overhead guard top, the sealed lid top is through discharge pipe outer wall a week fixedly connected with external sealing ring, overhead guard inner wall top fixedly connected with seals the roof, the overhead guard top left and right sides all is equipped with the overhead leak protection hole in proper order, the overhead leak protection hole is by overhead guard inner wall fixed connection overhead transmission pipe.

Preferably, the outer wall of the top end of the right side of the top cover is fixedly connected with a first exhaust interface, and the left end of the first exhaust interface is fixedly connected with an overhead transmission pipe through the inner wall of the top cover.

Preferably, the inner wall of the left side of the top of the bottom box is sequentially provided with bottom leakage-proof holes, and the inner wall of the right side of the top of the bottom box is sequentially provided with bottom leakage-proof holes.

Preferably, the bottom leakage-proof hole is fixedly connected with an electric control valve through the inner wall of the bottom box, and the electric control valve is fixedly connected with a bottom transmission pipe through the inner wall of the bottom box.

Preferably, the outer wall of the bottom of the right side of the bottom box is fixedly connected with a second discharge interface, and the left end of the second discharge interface is fixedly connected with a bottom transmission pipe through the inner wall of the bottom box.

(III) advantageous effects

The utility model provides a well head leak protection device for oil recovery. The method has the following beneficial effects:

(1) this kind of a well head leak protection device for oil recovery, through being equipped with the overhead guard, the overhead leak protection hole, overhead transmission pipe and first discharge interface, when the well head top produced too big transmission pressure, the overhead guard can receive the oil body through the overhead leak protection mouth that has set gradually this moment, reduce the pressure of inside seal leak protection structure, can transmit to first discharge kneck through the overhead transmission pipe after the oil body is received to overhead leak protection mouth, first discharge interface can be through the unified transmission processing of external transmission pipeline with the oil body, so through the pressure that alleviates the leak protection structure, the regional sealed roof of overhead guard, sealed lid and external sealing ring alright with comprehensive even prevention leak protection, because relevant structure spare part mutually supports the function, so the stable leak protection ability when having promoted the device and dealing with the impact pressure that does not.

(2) This kind of a well head leak protection device for oil recovery, through being equipped with the under casing, put leak protection hole at the end, transmission pipe and second discharge interface are put at the end, the under casing region can be regularly with remaining oil body in oil pocket and the anti-blocking device through the transmission of putting leak protection hole at the end, can transmit to put the transmission pipe at the end through opening of automatically controlled valve, can transmit to second discharge interface department by putting the transmission pipe at the end, it can unified discharge treatment to connect the transmission pipeline through second discharge interface department, compare in inside continuous leak protection, it can reduce the pollution that long-time oil body infiltration caused to discharge remaining oil body through regularly, because relevant structure spare part is mutually supported the operation, so alleviated the device and set up the infiltration pollution of the following region of well head earth's surface to all ring edge borders for a long time.

Drawings

FIG. 1 is a front sectional view of the overall structure of the present invention;

FIG. 2 is a partial sectional view of the top section of the present invention;

FIG. 3 is a partial sectional view of the bottom section of the present invention;

fig. 4 is a front view of the overall structure of the present invention.

In the figure: the device comprises a top cover-1, a bottom box-2, a discharge pipe-3, a well body-4, an oil cavity-5, an external sealing ring-6, a sealing cover-7, a sealing top plate-8, a top leakage-proof hole-9, a top transmission pipe-10, a first discharge interface-11, a bottom leakage-proof hole-12, an electric control valve-13, a bottom transmission pipe-14 and a second discharge interface-15.

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.

Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: a wellhead leak-proof device for oil extraction comprises a top cover 1, a bottom box 2, an external sealing ring 6, a sealing cover 7, a sealing top plate 8, an overhead leak-proof hole 9 and a bottom leak-proof hole 12, wherein the bottom outer wall of the bottom of the top cover 1 is fixedly connected with the bottom box 2 for a circle, the bottom box 2 is fixedly connected with a well body 4 close to the middle inner wall for a circle, the upper part and the lower part of the well body 4 are wrapped by the bottom to form a structure matching to keep the leak-proof comprehensiveness, an oil cavity 5 is arranged for a circle of the inner wall of the well body 4 to facilitate the oil body to pass through, a discharge pipe 3 is fixedly connected with the top end of the well body 4 to facilitate the oil body to be discharged after a connecting pipeline is opened and closed, the top cover 1 is fixedly connected with the middle section of the discharge pipe 3 to enable the leak-proof device to be not influenced by the discharge pipe 3, the sealing cover 7 is fixedly connected with the top end of the sealing cover 7 through the outer wall of the discharge pipe 3 for a circle, can reduce the leakage through the dual cover seam crossing of top outer wall, 1 inner wall top fixedly connected with of top hood seals roof 8, can cover by inside comprehensively and shelter from the separation leak protection, 1 top left and right sides of top hood all is equipped with overhead leak protection hole 9 in proper order, overhead leak protection hole 9 is by 1 inner wall fixed connection overhead transmission pipe 10 of top hood, can reduce the pressure of leak protection structure through transmission pipe discharge oil body in order quantitative when high pressure leak protection.

The outer wall of the top end of the right side of the top cover 1 is fixedly connected with a first discharge interface 11, the left end of the first discharge interface 11 is fixedly connected with an overhead transmission pipe 10 through the inner wall of the top cover 1, discharged oil bodies can be received through the first discharge interface 11, and the leakage-proof operation of the top area is comprehensively matched.

The inner wall of the left side of the top of the bottom box 2 is sequentially provided with bottom leakage-proof holes 12, the inner wall of the right side of the top of the bottom box 2 is sequentially provided with bottom leakage-proof holes 12, and residual oil bodies in the oil receiving cavity 5 and the leakage-proof device can be uniformly received to reduce daily permeation of the oil bodies.

The bottom leakage-proof hole 12 is fixedly connected with an electric control valve 13 through the inner wall of the bottom box 2, the electric control valve 13 is fixedly connected with a bottom transmission pipe 14 through the inner wall of the bottom box 2, and when oil bodies are normally transmitted to the bottom transmission pipe, the discharge stability can be kept by closing the electric control valve 13.

The outer wall of the bottom of the right side of the bottom box 2 is fixedly connected with a second discharge port 15, the left end of the second discharge port 15 is fixedly connected with a bottom transmission pipe 14 through the inner wall of the bottom box 2, and residual oil can be received through the second discharge port 15, so that the permeation pollution of the bottom area can be continuously reduced.

The working principle is as follows: when the oil well is in use, the well body 4 in the bottom box 2 transmits oil bodies through the oil cavity 5, the discharge pipe 3 arranged at the top end of the well body 4 can be opened and connected with a plurality of pipelines to discharge the oil bodies when in use, when the top end of the well head generates overlarge transmission pressure, the top cover 1 can receive the oil bodies through the top leakage-proof ports arranged in sequence, the pressure of an internal sealing leakage-proof structure is reduced, the oil bodies can be transmitted to the first top discharge port 11 through the transmission pipe 10 after being received by the top leakage-proof ports, the first discharge port 11 can uniformly transmit the oil bodies through the external transmission pipeline, the sealing cover 7 and the external sealing ring 6 can reduce leakage through the double-covered seam part of the outer wall of the top part, the sealing top plate 8 can be fully covered, blocked and prevented from leaking by the inside, when the oil well is closed, the area of the bottom box 2 can periodically transmit the oil bodies remained in the oil cavity 5 and the blockage-proof device through the bottom leakage-proof hole 12, the water can be transmitted into the bottom transmission pipe 14 by opening the electric control valve 13, the water can be transmitted to the second discharge interface 15 through the bottom transmission pipe 14, the water can be uniformly discharged and treated by connecting the transmission pipeline at the second discharge interface 15, and the daily infiltration pollution of the bottom section area is reduced.

The utility model discloses a: the anti-leakage device comprises a top cover-1, a bottom box-2, a discharge pipe-3, a well body-4, an oil cavity-5, an external sealing ring-6, a sealing cover-7, a sealing top plate-8, an overhead anti-leakage hole-9, an overhead transmission pipe-10, a first discharge interface-11, a bottom anti-leakage hole-12, an electric control valve-13, a bottom transmission pipe-14 and a second discharge interface-15, wherein the components are all universal standard components or components known by technicians in the field, the structure and the principle of the anti-leakage device are known by technicians or conventional experimental methods, and the anti-leakage device solves the problems that 1. the traditional wellhead anti-leakage device can bring different impact pressures due to different real-time flow rates during transmission and oil discharge of a wellhead, and the anti-leakage effect is insufficient when the anti-leakage device faces excessive pressure, 2. traditional well head leak protection device exists because the well head region is in for a long time and opens or closed state, so the long-time back that sets up of leak protection device, well head and leak protection device can cause regional problem of polluting because of the oil mass infiltration, the utility model discloses a combination of each other of above-mentioned part has promoted the stable leak protection ability when the device deals with the impact pressure not, has alleviated the device and has set up the infiltration of the following region of back well head earth's surface and pollute all ring edge borders for a long time.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A well head leak protection device for producing oil which characterized in that: comprises a top cover (1), a bottom box (2), an external sealing ring (6), a sealing cover (7), a sealing top plate (8), an overhead leakage-proof hole (9) and a bottom leakage-proof hole (12), wherein the bottom cover (1) is fixedly connected with the bottom box (2) at the bottom outer wall for a circle, the bottom box (2) is fixedly connected with a well body (4) at the middle end part near the inner wall for a circle, an oil cavity (5) is arranged at the inner wall for a circle of the well body (4), a discharge pipe (3) is fixedly connected at the top end of the well body (4), the top cover (1) is fixedly connected with the sealing cover (7) at the middle section of the discharge pipe (3) through the discharge pipe (3) for a circle, the external sealing ring (6) is fixedly connected at the top end of the sealing cover (7) through the discharge pipe (3) for a circle, and the sealing top plate (8) is fixedly connected at the inner wall top end of the top cover (1), the top cover is characterized in that top-mounted leakage-proof holes (9) are sequentially formed in the left side and the right side of the top end of the top cover (1), and the top-mounted leakage-proof holes (9) are fixedly connected with a top-mounted transmission pipe (10) through the inner wall of the top cover (1).

2. A wellhead containment device for oil recovery as claimed in claim 1, wherein: the top cover is characterized in that a first exhaust interface (11) is fixedly connected to the outer wall of the top end of the right side of the top cover (1), and an overhead transmission pipe (10) is fixedly connected to the left end of the first exhaust interface (11) through the inner wall of the top cover (1).

3. A wellhead containment device for oil recovery as claimed in claim 1, wherein: the inner wall of the left side of the top of the bottom box (2) is sequentially provided with bottom leakage-proof holes (12), and the inner wall of the right side of the top of the bottom box (2) is sequentially provided with bottom leakage-proof holes (12).

4. A wellhead containment device for oil recovery as claimed in claim 1, wherein: the bottom leakage-proof hole (12) is fixedly connected with an electric control valve (13) through the inner wall of the bottom box (2), and the electric control valve (13) is fixedly connected with a bottom transmission pipe (14) through the inner wall of the bottom box (2).

5. A wellhead containment device for oil recovery as claimed in claim 1, wherein: the outer wall of the bottom of the right side of the bottom box (2) is fixedly connected with a second discharge port (15), and the left end of the second discharge port (15) is fixedly connected with a bottom transmission pipe (14) through the inner wall of the bottom box (2).