CN213807624U

CN213807624U - Embedded casing head

Info

Publication number: CN213807624U
Application number: CN202022608195.1U
Authority: CN
Inventors: 方高远; 王英才; 郑磊
Original assignee: Fangzheng Valve Group Shanghai Co ltd
Current assignee: Fangzheng Valve Group Shanghai Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-27
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an embedded casing head, which comprises a flange and a casing body, wherein the inner wall of the flange is connected with a first thread, one side of the first thread is connected with a second thread, and one side of the second thread is connected with a third thread; and a first fixing sleeve is arranged on one side of the third thread, a first snap spring is connected to one side of the first fixing sleeve, and a second fixing sleeve is connected to one side, away from the first snap spring, of the first fixing sleeve. This embedded casing head, the coupling groove has been seted up to the fixed cover outer wall of second, and the coupling groove size and the third thread size phase-match of the fixed cover of second, the coupling groove of third screw thread and the fixed cover of second dock, then rotate first fixed cover, first fixed cover will drive the third screw thread and rotate in the coupling of the fixed inside of cover of second like this, will link together between final first fixed cover and the fixed cover of second to it becomes more convenient to make the connection between first fixed cover and the fixed cover of second.

Description

Embedded casing head

Technical Field

The utility model relates to a casing head technical field specifically is an embedded casing head.

Background

The casing head is used for fixing a well mouth of a drilling well, connecting a well mouth casing string, supporting the gravity of a technical casing and an oil layer casing, sealing an annular space between layers of pipes, providing transitional connection for installing a blowout preventer and a tubing head and a Christmas tree, and performing construction operations such as mud compensation, mud extrusion, monitoring, balance liquid filling and the like through two side ports on the casing head body.

The fixed cover of present embedded casing head has two, but in order to ensure the stability of the connection between two fixed covers, the connected mode of two fixed covers is all fairly complicated, and operating personnel just can't simply effectual link together two fixed covers when actual installation like this to it becomes convenient not enough on time to make its installation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an embedded casing head to the fixed cover of solving the present embedded casing head that above-mentioned background art provided has two, but for the stability of the connection between two fixed covers, the connected mode of two fixed covers is all fairly complicated, and operating personnel just can't simply effectually links together two fixed covers when actual installation like this, thereby makes its installation become convenient problem inadequately on time.

In order to achieve the above object, the utility model provides a following technical scheme: an embedded casing head comprises a flange and a casing body, wherein the inner wall of the flange is connected with first threads, one side of each first thread is connected with a second thread, and one side of each second thread is connected with a third thread;

a first fixing sleeve is arranged on one side of the third thread, a first clamp spring is connected to one side of the first fixing sleeve, a second fixing sleeve is connected to one side of the first fixing sleeve, which is far away from the first clamp spring, a second clamp spring is connected to one side of the second fixing sleeve, a production sealing bushing is connected to one side of the second clamp spring, a production hanger is connected to one side of the production sealing bushing, a technical sealing bushing is connected to one side of the production hanger, and a technical hanger is connected to one side of the technical sealing bushing;

the technical hanger is characterized in that a surface casing is connected to the inner wall of the technical hanger, a technical casing is connected to the inner part of the surface casing, a production casing is connected to the inner part of the technical casing, the surface casing is connected to one side of the casing, an upward return outlet is formed in one end of the casing, an end cap is connected to one side of the upward return outlet, a downward return outlet is formed in one side of the end cap, a threaded flange is connected to one side of the downward return outlet, a valve is arranged on one side of the threaded flange, a stop valve is arranged on one side of the valve, and a pressure gauge is connected to the surface of the stop valve.

Preferably, the outer wall of the second fixing sleeve is provided with a sunken coupling groove, the size of the coupling groove on the outer wall of the second fixing sleeve is matched with that of the third thread, and the first fixing sleeve is in coupling connection with the second fixing sleeve through the third thread.

Preferably, the production sealing complementary core and the technical sealing complementary core are provided with two groups, and the two groups of production sealing complementary cores and the two groups of technical sealing complementary cores are symmetrical with each other about a longitudinal midline of the production casing.

Preferably, the surface casing, the technical casing and the production casing are all of hollow structures, the surface casing, the technical casing and the production casing are circularly located at the same position, the size of the surface casing is larger than that of the technical casing, and the size of the technical casing is larger than that of the production casing.

Preferably, the outer wall of the sleeve body is provided with two groups of upper return outlets, plugs, lower return outlets, threaded flanges, valves, stop valves and pressure gauges, and the two groups of upper return outlets, the plugs, the lower return outlets, the threaded flanges, the valves, the stop valves and the pressure gauges are in a cross symmetrical distribution state.

Preferably, the vertical end surface of the stop valve is vertically connected with the pressure gauge, the transverse end of the stop valve is vertically connected with a threaded flange, and the joint of the stop valve and the lower return outlet is of a threaded structure through the threaded flange.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the coupling groove has been seted up to the fixed cover outer wall of second of this embedded casing head, and the coupling groove size and the third thread size phase-match of the fixed cover of second, the coupling groove of third screw thread and the fixed cover of second dock, then rotate first fixed cover, first fixed cover will drive the third screw thread and rotate in the coupling of the fixed cover inside of second like this, will link together between final first fixed cover and the fixed cover of second to it becomes more convenient to make the connection between first fixed cover and the fixed cover of second.

2. This embedded casing head is provided with two manometers, and every manometer is installed on the surface of a stop valve, opens the back when the valve during use, and the manometer will be according to the inside condition of device and show actual pressure, and operating personnel just is the pressure value of the real of timely effectual observation like this to promote the security of product.

3. This embedded casing head's the casing body, the top casing, technology sleeve pipe and production sleeve pipe all are hollow cylinder pipe, and the internal size of casing and top casing size phase-match, top casing internal size and technology sleeve pipe size phase-match, and the internal size of technology sleeve pipe size and production sleeve pipe size phase-match, only need be with the top casing in proper order when the installation like this, the equipment just can be accomplished with production sleeve pipe cup joint together to the technology sleeve pipe, thereby optimized the device's butt joint technology, make whole butt joint more accurate.

Drawings

FIG. 1 is a schematic view of the connecting structure of the production casing of the present invention;

FIG. 2 is a schematic front view of the present invention;

fig. 3 is a schematic view of the first fixing sleeve abutting joint structure of the present invention.

In the figure: 1. a flange plate; 2. a first thread; 3. a second thread; 4. a third thread; 5. a first fixing sleeve; 6. a first clamp spring; 7. a second fixing sleeve; 8. a second clamp spring; 9. producing a sealed bushing; 10. producing a hanger; 11. technically sealing and supplementing the core; 12. a technical hanger; 13. a surface casing; 14. a technical sleeve; 15. producing a sleeve; 16. a cannula body; 17. an upward return outlet; 18. a plug; 19. a lower return outlet; 20. a threaded flange; 21. a valve; 22. a stop valve; 23. and a pressure gauge.

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. 1-3, the present invention provides a technical solution: an embedded casing head comprises a flange plate 1, a first thread 2, a second thread 3, a third thread 4, a first fixing sleeve 5, a first clamp spring 6, a second fixing sleeve 7, a second clamp spring 8, a production sealing bushing 9, a production hanger 10, a technology sealing bushing 11, a technology hanger 12, a surface casing 13, a technology casing 14, a production casing 15, a casing body 16, an upper return outlet 17, a plug 18, a lower return outlet 19, a threaded flange 20, a valve 21, a stop valve 22 and a pressure gauge 23, wherein the inner wall of the flange plate 1 is connected with the first thread 2, one side of the first thread 2 is connected with the second thread 3, and one side of the second thread 3 is connected with the third thread 4;

a first fixing sleeve 5 is arranged on one side of the third thread 4, a first snap spring 6 is connected on one side of the first fixing sleeve 5, a second fixing sleeve 7 is connected on one side of the first fixing sleeve 5, which is far away from the first snap spring 6, an invaginated coupling groove is arranged on the outer wall of the second fixing sleeve 7, the size of the coupling groove on the outer wall of the second fixing sleeve 7 is matched with that of the third thread 4, the first fixing sleeve 5 is in coupling connection with the second fixing sleeve 7 through the third thread 4, the first fixing sleeve 5 is rotated, so that the third thread 4 is driven by the first fixing sleeve 5 to rotate in the coupling inside the second fixing sleeve 7, finally the first fixing sleeve 5 and the second fixing sleeve 7 are connected together, a second snap spring 8 is connected on one side of the second fixing sleeve 7, a production sealing complementary core 9 is connected on one side of the second snap spring 8, and two groups of the production sealing complementary core 9 and a technical sealing complementary core 11 are arranged, the two groups of production sealing bushing cores 9 and the two groups of technical sealing bushing cores 11 are symmetrical with each other about a longitudinal center parting line of the production casing 15, so that the corresponding connecting pieces can be connected with the casing body 16 by the production sealing bushing cores 9 and the technical sealing bushing cores 11 during installation, one side of the production sealing bushing cores 9 is connected with a production hanger 10, one side of the production hanger 10 is connected with the technical sealing bushing cores 11, and one side of the technical sealing bushing cores 11 is connected with a technical hanger 12;

the inner wall of the technical hanger 12 is connected with a surface casing 13, the surface casing 13, a technical casing 14 and a production casing 15 are all of a hollow structure, the surface casing 13, the technical casing 14 and the production casing 15 are circularly located at the same position, the size of the surface casing 13 is larger than that of the technical casing 14, the size of the technical casing 14 is larger than that of the production casing 15, the assembly can be completed only by sequentially sleeving the surface casing 13, the technical casing 14 and the production casing 15 together during installation, so that the butt joint process of the device is optimized, the technical casing 14 is connected inside the surface casing 13, the production casing 15 is connected inside the technical casing 14, the surface casing 13 is connected to one side of a casing body 16, two groups of upward return outlets 17, plugs 18, downward return outlets 19, threaded flanges 20, valves 21, stop valves 22 and pressure gauges 23 are arranged on the outer wall of the casing body, and two groups of upper return outlets 17, plugs 18, lower return outlets 19, threaded flanges 20, valves 21, stop valves 22 and pressure gauges 23 are in a cross symmetrical distribution state, after the valves 21 are opened, the pressure gauges 23 can display actual pressure according to the conditions inside the device, so that an operator can timely and effectively observe actual pressure values, one end of the sleeve body 16 is provided with the upper return outlets 17, one side of each upper return outlet 17 is connected with one plug 18, one side of each plug 18 is provided with the lower return outlet 19, one side of each lower return outlet 19 is connected with the threaded flange 20, one side of each threaded flange 20 is provided with the valve 21, one side of each valve 21 is provided with the stop valve 22, the longitudinal end surface of each stop valve 22 is vertically connected with the pressure gauge 23, one transverse end of each stop valve 22 is vertically connected with the threaded flange 20, and the joint of each stop valve 22 and the lower return outlet 19 through the threaded flange 20 is in a threaded structure, thus, the pressure gauge 23 can be installed on one side of the lower return port 19 through the stop valve 22 and the threaded flange 20, and the pressure gauge 23 is connected to the surface of the stop valve 22.

The working principle is as follows: when the embedded casing head is used, firstly, a coupling groove is formed in the outer wall of the second fixing sleeve 7, the size of the coupling groove of the second fixing sleeve 7 is matched with that of the third thread 4, the third thread 4 is butted with the coupling groove of the second fixing sleeve 7, then the first fixing sleeve 5 is rotated, so that the first fixing sleeve 5 drives the third thread 4 to rotate in the coupling in the second fixing sleeve 7, and finally the first fixing sleeve 5 and the second fixing sleeve 7 are connected together, so that the connection between the first fixing sleeve 5 and the second fixing sleeve 7 is more convenient and faster, the device is provided with two pressure gauges 23, each pressure gauge 23 is installed on the surface of one stop valve 22, when the valve 21 is opened during use, the pressure gauges 23 can display the actual pressure according to the condition in the device, and thus an operator can timely and effectively observe the actual pressure value, in order to promote the security of product, in addition, the casing body 16, surface casing 13, technology sleeve 14 and production sleeve 15 all are hollow cylinder pipe, and casing body 16 internal dimension and surface casing 13 size phase-match, surface casing 13 internal dimension and technology sleeve 14 size phase-match, and technology sleeve 14 size internal dimension and production sleeve 15 size phase-match, only need to cup joint surface casing 13, technology sleeve 14 and production sleeve 15 together in proper order and just can accomplish the equipment when the installation, thereby optimized the butt joint technology of the device, make whole butt joint more accurate, this is the characteristics of embedded casing head, the content that does not make detailed description in this description belongs to the well-known prior art of skilled person in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. An embedded casing head, includes ring flange (1) and casing body (16), its characterized in that: the inner wall of the flange plate (1) is connected with a first thread (2), one side of the first thread (2) is connected with a second thread (3), and one side of the second thread (3) is connected with a third thread (4);

a first fixing sleeve (5) is arranged on one side of the third thread (4), a first snap spring (6) is connected to one side of the first fixing sleeve (5), a second fixing sleeve (7) is connected to one side, away from the first snap spring (6), of the first fixing sleeve (5), a second snap spring (8) is connected to one side of the second fixing sleeve (7), a production sealing bushing (9) is connected to one side of the second snap spring (8), a production hanger (10) is connected to one side of the production sealing bushing (9), a technical sealing bushing (11) is connected to one side of the production hanger (10), and a technical hanger (12) is connected to one side of the technical sealing bushing (11);

technical hanger (12) inner wall connection has top layer sleeve pipe (13), top layer sleeve pipe (13) internal connection has technical sleeve pipe (14), technical sleeve pipe (14) internal connection has production sleeve pipe (15), casing body (16) one side is connected with top layer sleeve pipe (13), casing body (16) one end is provided with return outlet (17), upward return outlet (17) one side is connected with end cap (18), end cap (18) one side is provided with down return outlet (19), return outlet (19) one side is connected with flange (20) down, flange (20) one side is provided with valve (21), valve (21) one side is provided with stop valve (22), stop valve (22) surface connection has manometer (23).

2. The casing head of claim 1, wherein: the outer wall of the second fixing sleeve (7) is provided with a sunken coupling groove, the size of the coupling groove on the outer wall of the second fixing sleeve (7) is matched with that of the third thread (4), and the first fixing sleeve (5) is in coupling connection with the second fixing sleeve (7) through the third thread (4).

3. The casing head of claim 1, wherein: the production sealing complementary cores (9) and the technical sealing complementary cores (11) are provided with two groups, and the two groups of production sealing complementary cores (9) and the technical sealing complementary cores (11) are symmetrical with each other about a longitudinal midline of the production casing (15).

4. The casing head of claim 1, wherein: the surface casing pipe (13), the technical casing pipe (14) and the production casing pipe (15) are all of hollow structures, the surface casing pipe (13), the technical casing pipe (14) and the production casing pipe (15) are circularly located at the same position, the size of the surface casing pipe (13) is larger than that of the technical casing pipe (14), and the size of the technical casing pipe (14) is larger than that of the production casing pipe (15).

5. The casing head of claim 1, wherein: the outer wall of the sleeve body (16) is provided with two groups of upper return outlets (17), plugs (18), lower return outlets (19), threaded flanges (20), valves (21), stop valves (22) and pressure gauges (23), and the two groups of upper return outlets (17), the plugs (18), the lower return outlets (19), the threaded flanges (20), the valves (21), the stop valves (22) and the pressure gauges (23) are in a crossed and symmetrical distribution state.

6. The casing head of claim 1, wherein: the vertical end surface of the stop valve (22) is vertically connected with a pressure gauge (23), the transverse end of the stop valve (22) is vertically connected with a threaded flange (20), and the joint of the stop valve (22) and the lower return outlet (19) is of a threaded structure through the threaded flange (20).