CN214576861U

CN214576861U - Anti-leakage oil field water injection wellhead device

Info

Publication number: CN214576861U
Application number: CN202120115043.XU
Authority: CN
Inventors: 匡茜茜; 曹兴涛; 王雷; 孙斌; 刘训普
Original assignee: Jiangsu Suyan Valve Machinery Co Ltd
Current assignee: Jiangsu Suyan Valve Machinery Co Ltd
Priority date: 2021-01-16
Filing date: 2021-01-16
Publication date: 2021-11-02
Anticipated expiration: 2031-01-16

Abstract

The utility model discloses an antiseep oil field water injection well head device, including casing head and oil pipe head cross, the top rigid coupling of casing head has oil pipe head cross, sealing device is installed to the inside top of oil pipe head cross. This antiseep oil field water injection well head device, through the oil pipe hanger, the dog, first sealing washer, mutually support between staple bolt and the second sealing washer isotructure, can improve the leakproofness of this device through first sealing washer and second sealing washer and can play limiting displacement to first sealing washer simultaneously through the dog, thereby prevent that first sealing washer from taking place the skew, through the jackscrew, the jackscrew is packed and is pressed the cap, mutually support between sealed filler and the first cross isostructure of oil pipe, when revealing takes place, can pack to the jackscrew through the jackscrew and press the cap to remove, thereby the jackscrew is packed and is pressed the cap and can extrude sealed filler, thereby prevent to continue to reveal through sealed filler.

Description

Anti-leakage oil field water injection wellhead device

Technical Field

The utility model relates to an oil drilling equipment technical field specifically is an antiseep oil field water injection wellhead assembly.

Background

Petroleum is insoluble in water but can form emulsion with water, the petroleum is mainly used as fuel oil and gasoline which form one of the most important secondary energy sources in the world in 2012, the petroleum is also a raw material of a plurality of chemical industry products such as solvents, chemical fertilizers, pesticides, plastics and the like, and the petroleum exploitation generally needs to use a wellhead device, such as an anti-leakage oilfield water injection wellhead device with the patent number of CN 211648077U, the utility model discloses a O-shaped sealing ring and a V-shaped sealing ring are installed at the connecting part in a water injection wellhead device body, and each connector is hermetically connected through a clamp, thereby greatly increasing the sealing performance of the water injection wellhead device body when in use, avoiding the leakage phenomenon, preventing the loss and pollution caused by the leakage, and the sealing device in the prior art has poor fixing effect, thus the dislocation phenomenon is easy to occur when in installation, in addition, in the prior art, when the leakage phenomenon occurs, the leakage can not be stopped quickly, so that the use effect is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an antiseep oil field water injection well head device to solve and propose among the above-mentioned background art and the sealing device among the prior art fixed effect is not good, the easy problem that appears the dislocation phenomenon when installing like this.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-leakage oil field water injection wellhead device comprises a casing head and an oil pipe head four-way joint, wherein the oil pipe head four-way joint is fixedly connected above the casing head, and a sealing device is arranged above the inner part of the oil pipe head four-way joint;

the sealing device comprises an oil pipe hanger, a stop block, a first sealing ring and a hoop;

the oil pipe hanger is characterized in that the upper outer wall of the oil pipe hanger is fixedly connected with the upper interior of the oil pipe head four-way joint, a plurality of stop blocks are fixedly connected to the outer wall of the oil pipe hanger, a first sealing ring is arranged between the stop blocks, the inner side and the outer side of the first sealing ring are tightly attached to the outer wall of the oil pipe hanger and the inner wall of the oil pipe head four-way joint respectively, a hoop is arranged on the outer side of each stop block, and the inner wall of the hoop is attached to the outer wall of the oil pipe head four-way joint.

Preferably, the first sealing ring and the stop block are arranged in parallel, so that the stop block can limit the first sealing ring.

Preferably, the midpoint of the tubing hanger and the midpoint of the four-way joint of the tubing head are on a vertical line, so that the use effect of the tubing hanger can be improved.

Preferably, an operating device is installed on the outer side of the four-way pipe head;

the operating device comprises a first flange plate, a second flange plate, a pipeline, a wing valve, a third flange plate, a fourth flange plate, a stop valve, a T-shaped rod and a pressure gauge;

the utility model discloses a pipeline, including first ring flange, second ring flange, pipeline, wing valve, stop valve, pressure gauge, stop valve, first ring flange passes through the bolt and links to each other with oil pipe head cross-thread, the right side of first ring flange is equipped with the second ring flange, the second ring flange passes through the bolt and links to each other with oil pipe head cross-thread, the equal rigid coupling in the outside of first ring flange and second ring flange has the pipeline, the rigid coupling has the wing valve in the middle of the preceding terminal surface of pipeline, controls the outside of pipeline rigid coupling has third ring flange and fourth ring flange respectively, the right side rigid coupling of fourth ring flange has the stop valve, the middle rigid coupling of stop valve has T shape pole, the top rigid coupling of T shape pole has the manometer.

Preferably, the left pipeline and the right pipeline are symmetrically distributed by taking the oil pipe head four-way joint as the center, so that the working efficiency can be improved.

Preferably, the outer wall of the rotary disc of the wing valve is processed with textures, so that the wing valve can be conveniently rotated.

Preferably, a leakage-proof device is arranged above the right side of the four-way pipe head;

the leakage-proof device comprises a jackscrew, a jackscrew packing pressing cap, a sealing packing and a second sealing ring;

the middle and left side outer walls of the jackscrew are in clearance fit with the through hole of the oil pipe head cross and the inner wall of the groove of the oil pipe hanger respectively, the right side outer wall of the jackscrew is provided with a jackscrew packing pressing cap, the middle outer wall of the jackscrew packing pressing cap is fixedly connected with a sealing packing, the outer wall of the sealing packing is tightly attached to the inner wall of the through hole of the oil pipe head cross, a second sealing ring is arranged below the left side of the jackscrew, the inside of the second sealing ring is fixedly connected with the outer wall below the oil pipe hanger, and the outer wall of the second sealing ring is tightly attached to the inner wall of the oil pipe head cross.

Preferably, the thickness of the second sealing ring is twice that of the first sealing ring, so that the sealing performance can be improved.

Compared with the prior art, the beneficial effects of the utility model are that: according to the anti-leakage oilfield water injection wellhead device, the structures such as the oil pipe hanger, the stop block, the first sealing ring, the hoop and the second sealing ring are mutually matched, so that the sealing performance of the device can be improved through the first sealing ring and the second sealing ring, and the stop block can limit the first sealing ring, so that the first sealing ring is prevented from deviating;

through the mutual matching of the first flange plate, the second flange plate, the pipeline, the wing valve, the third flange plate, the fourth flange plate, the stop valve, the T-shaped rod, the pressure gauge and the like, the pressure inside the device can be detected through the pressure gauge, and the wing valve and the stop valve are used for adjusting, so that the using effect of the device is improved;

through the mutual cooperation between the structures such as the jackscrew, the jackscrew packing pressing cap, the sealing packing and the oil pipe head four-way joint, when leakage occurs, the jackscrew packing pressing cap can be moved through the jackscrew, so that the jackscrew packing pressing cap can extrude the sealing packing, and the continuous leakage is prevented through the sealing packing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the stopper, the first seal ring and the anchor ear in FIG. 1;

FIG. 3 is a schematic structural view of a fourth flange, a stop valve and a pressure gauge in FIG. 1;

fig. 4 is a schematic view of the structure of fig. 1 at the location of the seal packing, tubing hanger and secondary seal ring.

In the figure: 1. the oil pipe hanger comprises a casing head, 2, an oil pipe four-way head, 3, a sealing device, 301, an oil pipe hanger, 302, a stop block, 303, a first sealing ring, 304, a hoop, 4, an operating device, 401, a first flange plate, 402, a second flange plate, 403, a pipeline, 404, a wing valve, 405, a third flange plate, 406, a fourth flange plate, 407, a stop valve, 408, a T-shaped rod, 409, a pressure gauge, 5, a leakage-proof device, 501, a jackscrew, 502, a jackscrew packing pressing cap, 503, a sealing packing, 504 and a second sealing ring.

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, the present invention provides a technical solution: an anti-leakage oil field water injection wellhead device comprises a casing head 1 and an oil pipe head cross joint 2, the oil pipe head cross joint 2 is fixedly connected above the casing head 1, a through hole is processed above the right side of the oil pipe head cross joint 2, a sealing device 3 is installed above the inner part of the oil pipe head cross joint 2, the sealing device 3 comprises an oil pipe hanger 301, a stop block 302, a first sealing ring 303 and an anchor ear 304, the outer wall of the upper part of the oil pipe hanger 301 is fixedly connected with the inner part of the upper part of the oil pipe head cross joint 2, the outer wall of the oil pipe hanger 301 is fixedly connected with 4 stop blocks 302, the first sealing ring 303 is installed between every two adjacent stop blocks 302, the inner side and the outer side of the first sealing ring 303 are respectively tightly attached to the outer wall of the oil pipe hanger 301 and the inner wall of the oil pipe head cross joint 2, the sealing performance can be improved through the first sealing ring 303, the anchor ear 304 is installed on the outer side of each stop block 302, the inner wall of the anchor ear 304 is attached to the outer wall of the oil pipe head cross joint 2, the first seal ring 303 is arranged in parallel with the stop 302, and the midpoint of the tubing hanger 301 and the midpoint of the tubing head cross 2 are on a vertical line.

An operating device 4 is installed on the outer side of the tubing head four-way 2, the operating device 4 comprises a first flange 401, a second flange 402, a pipeline 403, a wing valve 404, a third flange 405, a fourth flange 406, a stop valve 407, a T-shaped rod 408 and a pressure gauge 409, the first flange 401 is in threaded connection with the tubing head four-way 2 through bolts, the second flange 402 is arranged on the right side of the first flange 401, the second flange 402 is in threaded connection with the tubing head four-way 2 through bolts, the first flange 401 and the second flange 402 can be fixed with the tubing head four-way 2 through bolts, the pipeline 403 is fixedly connected to the outer sides of the first flange 401 and the second flange 402, the wing valve 404 is fixedly connected to the middle of the front end face of the pipeline 403, the third flange 405 and the fourth flange 406 are respectively fixedly connected to the outer sides of the left and right pipelines 403, the stop valve 407 is fixedly connected to the right side of the fourth flange 406, the T-shaped rod 408 is fixedly connected to the middle of the stop valve 407, the inside of the T-shaped rod 408 is communicated with the stop valve 407 and the inside of the pipeline 403, a pressure gauge 409 is fixedly connected above the T-shaped rod 408, the pressure gauge 409 can measure the pressure inside the pipeline 403, the left and right pipelines 403 are symmetrically distributed by taking the oil pipe head four-way valve 2 as the center, and the outer wall of a rotary disc of the wing valve 404 is processed with textures.

The anti-leakage device 5 is arranged above the right side of the oil pipe head four-way 2, the anti-leakage device 5 comprises a jackscrew 501, a jackscrew packing pressing cap 502, a sealing packing 503 and a second sealing ring 504, the middle outer wall and the left outer wall of the jackscrew 501 are respectively in clearance fit with the through hole of the oil pipe head four-way 2 and the inner wall of the groove of the oil pipe hanger 301, the jackscrew packing pressing cap 502 is arranged on the right outer wall of the jackscrew 501, the jackscrew 501 can extrude the jackscrew packing pressing cap 502, the sealing packing 503 is fixedly connected with the middle outer wall of the jackscrew packing pressing cap 502, the jackscrew packing pressing cap 502 can extrude the sealing packing 503, the outer wall of the sealing packing 503 is tightly attached to the inner wall of the through hole of the oil pipe head four-way 2, the second sealing ring 504 is arranged below the left side of the jackscrew 501, the inner part of the second sealing ring 504 is fixedly connected with the lower outer wall of the oil pipe hanger 301, the outer wall of the second sealing ring 504 is tightly attached to the inner wall of the oil pipe head four-way 2, the sealing effect can be further improved by the second sealing ring 504, the thickness of the second sealing ring 504 being twice the thickness of the first sealing ring 303.

When an operator needs to use the anti-leakage oilfield water injection wellhead device, firstly, the operator fixedly connects a plurality of stop blocks 302 on the outer wall of an oil pipe hanger 301, a first sealing ring 303 is installed between the adjacent stop blocks 302, the first sealing ring 303 can be limited by the two adjacent stop blocks 302, so that the first sealing ring 303 is prevented from deviating, a second sealing ring 504 is fixedly connected on the outer wall below the oil pipe hanger 301, so that the outer walls of the first sealing ring 303 and the second sealing ring 504 are tightly attached to the inner wall of an oil pipe head cross-joint 2, the sealing effect of the device can be improved by the first sealing ring 303 and the second sealing ring 504, the device can be adjusted by a wing valve 404 and a stop valve 407, the pressure inside the device can be observed by a pressure gauge 409, so that the use effect of the device is improved, when the device leaks after being used for a long time, the jackscrew 501 can be screwed, so that the jackscrew 501 presses the cap 502 for the jackscrew packing, and the cap 502 for the jackscrew packing can extrude the sealing packing 503 to expand the sealing packing 503, thereby achieving the purpose of primary sealing and providing time for maintenance work.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a antiseep oil field water injection wellhead assembly, includes casing head (1) and oil pipe head cross (2), the top rigid coupling of casing head (1) has oil pipe head cross (2), its characterized in that: a sealing device (3) is arranged above the inner part of the four-way pipe head (2);

the sealing device (3) comprises an oil pipe hanger (301), a stop block (302), a first sealing ring (303) and a hoop (304);

the top outer wall of oil pipe hanger (301) links to each other with the inside fixed of top of oil pipe head cross (2), the outer wall rigid coupling of oil pipe hanger (301) has a plurality of dogs (302), and is adjacent install first sealing washer (303) between dog (302), the inside and outside both sides of first sealing washer (303) closely laminate with the outer wall of oil pipe hanger (301) and the inner wall of oil pipe head cross (2) respectively, staple bolt (304) are installed in the outside of dog (302), the inner wall of staple bolt (304) laminates with the outer wall of oil pipe head cross (2) mutually.

2. The anti-leakage oilfield flooding wellhead assembly of claim 1, wherein: the first sealing ring (303) and the stop block (302) are arranged in parallel.

3. The anti-leakage oilfield flooding wellhead assembly of claim 1, wherein: the middle point of the oil pipe hanger (301) and the middle point of the oil pipe head four-way joint (2) are on a vertical line.

4. The anti-leakage oilfield flooding wellhead assembly of claim 1, wherein: an operating device (4) is arranged on the outer side of the four-way pipe head (2);

the operating device (4) comprises a first flange plate (401), a second flange plate (402), a pipeline (403), a wing valve (404), a third flange plate (405), a fourth flange plate (406), a stop valve (407), a T-shaped rod (408) and a pressure gauge (409);

first ring flange (401) link to each other through bolt and oil pipe head cross (2) screw thread, the right side of first ring flange (401) is equipped with second ring flange (402), second ring flange (402) link to each other through bolt and oil pipe head cross (2) screw thread, the equal rigid coupling in the outside of first ring flange (401) and second ring flange (402) has pipeline (403), the rigid coupling has wing valve (404) in the middle of the preceding terminal surface of pipeline (403), controls the outside of pipeline (403) is the rigid coupling respectively has third ring flange (405) and fourth ring flange (406), the right side rigid coupling of fourth ring flange (406) has stop valve (407), the middle rigid coupling of stop valve (407) has T shape pole (408), the top rigid coupling of T shape pole (408) has manometer (409).

5. The leak-proof oilfield flooding wellhead assembly of claim 4, wherein: the left and right pipelines (403) are symmetrically distributed by taking the oil pipe head four-way joint (2) as the center.

6. The leak-proof oilfield flooding wellhead assembly of claim 4, wherein: the outer wall of the rotary disc of the wing valve (404) is processed with textures.

7. The anti-leakage oilfield flooding wellhead assembly of claim 1, wherein: a leakage-proof device (5) is arranged above the right side of the four-way pipe head (2);

the anti-leakage device (5) comprises a jackscrew (501), a jackscrew packing pressing cap (502), a sealing packing (503) and a second sealing ring (504);

the middle and the left side outer wall of jackscrew (501) respectively with the through-hole department of oil pipe head cross (2) and the groove inner wall clearance fit of oil pipe hanger (301), jackscrew packing pressure cap (502) is installed to the right side outer wall of jackscrew (501), the middle outer wall rigid coupling of jackscrew packing pressure cap (502) has sealed filler (503), the outer wall of sealed filler (503) closely laminates with the through-hole department inner wall of oil pipe head cross (2), the left side below of jackscrew (501) is equipped with second sealing washer (504), the inside of second sealing washer (504) links to each other with the below outer wall of oil pipe hanger (301) is fixed, the outer wall of second sealing washer (504) closely laminates with the inner wall of oil pipe head cross (2).

8. The leak-proof oilfield flooding wellhead assembly of claim 7, wherein: the thickness of the second sealing ring (504) is twice that of the first sealing ring (303).