Intelligent remote control cement head

Abstract

The invention discloses an intelligent remote control cement head, and belongs to the technical field of well cementation. A rubber plug baffle assembly and a rotary stop pin assembly are arranged in the middle of the cement pipe body, when the rubber plug baffle assembly is in a closed state, an inner cavity of the cement pipe body is divided into an upper cavity and a lower cavity which are not communicated through the rubber plug baffle assembly, the upper cavity is used for containing a rubber plug, and the rubber plug is located above the rubber plug baffle assembly in the closed state. The rotary stop pin assembly is used for keeping the rubber plug baffle assembly in a closed state; an F-shaped high-pressure manifold is arranged on the right side of the cement pipe main body; an L-shaped high-pressure manifold is arranged on the left side of the cement pipe body. The valve is reasonable and compact in structure and convenient to use, the stop block is driven by the movable valve element to turn over, the stop block relieves limiting of the end of the transverse partition plate, the transverse partition plate can turn over clockwise to enter the containing cavity, and therefore the rubber plug can be stably released; and the overturning state of the hexagon nut can be monitored through the sensor, so that an operator can accurately judge the release condition of the rubber plug.

Description

Technical Field

[0001] The invention relates to the technical field of well cementing, and in particular to an intelligent remote-controlled cementing head. Background Art

[0002] Cementing and completion tools for oil and gas wells are important equipment to ensure the structural integrity and stability of the wellbore. By strictly controlling the steps of injecting cement slurry, cleaning and curing, the complete filling and curing of cement can be ensured.

[0003] Chinese patent application CN115822514A discloses a metering cementing head and its application, including a cement head body and a top rubber plug and a bottom rubber plug arranged in its inner cavity; the top rubber plug is located above the bottom rubber plug; the cement head body is provided with a down-pressure plug hole, a grouting hole, a sound wave receiving hole and a sound wave emitting hole; the down-pressure plug hole is located between the top rubber plug and the bottom rubber plug; the grouting hole, the sound wave receiving hole and the sound wave emitting hole are all located below the bottom rubber plug. In drilling and completion operations, the present invention can be used to measure the cementing cement slurry volume and the displacement slurry volume in real time and accurately during cementing construction. However, the rubber plug in the cement head needs to stay in the inner cavity of the cement head body when not in use, and there is a hidden danger that it cannot be released stably when in use.

[0004] Based on this, the present invention designs an intelligent remote-controlled cement head to solve the above problems. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an intelligent remote-controlled cement head.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: An intelligent remote-controlled cement head comprises a cement pipe body; An upper cap is installed at the upper end of the cement pipe body, and a quick-release upper joint is installed at the lower end of the cement pipe body. The lower end of the quick-release upper joint is connected to the upper end of the quick-release lower joint through a union joint. A rubber plug baffle assembly and a rotating baffle pin assembly are arranged in the middle of the cement pipe body. When the rubber plug baffle assembly is in a closed state, the inner cavity of the cement pipe body is divided into an upper cavity and a lower cavity which are not communicated by the rubber plug baffle assembly. The upper cavity is used to place the rubber plug, and the rubber plug is seated above the rubber plug baffle assembly in the closed state. The rotating baffle pin assembly is used to keep the rubber plug baffle assembly in a closed state. An F-shaped high-pressure manifold is provided on the right side of the cement pipe body; An L-shaped high-pressure manifold is arranged on the left side of the cement pipe body.

[0007] Furthermore, the rubber plug baffle assembly includes a diaphragm, a rotating shaft, a handle and a receiving chamber, the side wall of the cement pipe body is provided with a receiving chamber that can completely receive the diaphragm, an extended end of the diaphragm is rotatably connected to the rotating shaft, both ends of the rotating shaft pass through the side wall of the cement pipe body, and the rotating shaft is rotatably connected to the inner wall of the receiving chamber through a bearing; Furthermore, a handle is fixedly installed at one end of the rotating shaft, a hexagonal nut is fixedly installed at the other end of the rotating shaft, and a sensor for monitoring the rotation state of the hexagonal nut is arranged on the side wall of the cement pipe body.

[0008] Furthermore, the rotating stop pin assembly includes a valve seat, a valve core, a sealing end cover and a stop block. The valve seat is fixedly connected to the side wall of the cement pipe body, and a sealing end cover is provided on the outer side of the valve seat; a valve core is rotatably installed on the inner side of the valve seat, and a stop block is fixedly installed at an eccentric position of the valve core near one end of the diaphragm for preventing the diaphragm from flipping downward.

[0009] Furthermore, the F-shaped high-pressure manifold includes an upper transverse tube, a lower transverse tube and a longitudinal tube, wherein the left end of the upper transverse tube is connected to the upper cavity of the cement pipe body through a union joint, the left end of the lower transverse tube is connected to the lower cavity of the cement pipe body through a union joint, and the right ends of the upper transverse tube and the lower transverse tube are connected to the longitudinal tube through a union joint; a first injection port is provided at the lower end of the longitudinal tube.

[0010] Furthermore, a slurry replacement plug valve is arranged on the upper transverse pipe, and a spare plug valve is arranged on the lower transverse pipe.

[0011] Furthermore, an L-shaped high-pressure manifold is arranged on the left side of the cement pipe body, and the L-shaped high-pressure manifold includes a main pipe and a branch pipe. The right end of the main pipe is connected with the lower cavity of the cement pipe body through a union joint, and the left end of the main pipe is provided with a second injection port; the upper end of the branch pipe is connected with the main pipe, and the lower end of the branch pipe is provided with a third injection port.

[0012] Furthermore, a cleaning plug valve is arranged on one side of the main pipe close to the cement pipe body, and a cement injection plug valve is arranged on the branch pipe.

[0013] Furthermore, a pressure sensor for monitoring the pressure inside the pipe is provided on the side wall of the union joint connecting the lower transverse pipe and the cement pipe body, and the pressure sensor is electrically connected to the central control.

[0014] Furthermore, the outer ends of the slurry replacement plug valve, standby plug valve, cleaning plug valve, ash injection plug valve and valve core are all provided with electric actuator structures for controlling their opening and closing states, and the electric actuator structures are electrically connected to the central control.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has a reasonable and compact structure and is easy to use. The movable valve core drives the stopper to flip, so that the stopper releases the limit on the end of the diaphragm, and the diaphragm can flip clockwise into the accommodating cavity, so that the rubber plug can be released stably; the flipping state of the hexagonal nut can be monitored by the sensor, so that the operator can accurately know the flipping state of the diaphragm to correctly judge the release of the rubber plug; At the same time, the diaphragm is driven to rotate by rotating the handle, and the valve core is rotated to drive the stopper to reset and move to the bottom of the diaphragm, so that the diaphragm is mounted on the stopper, so that the diaphragm can be fully retracted for subsequent operations.

[0016] 2. The outer ends of the slurry replacement plug valve, spare plug valve, cleaning plug valve, ash injection plug valve and valve core are equipped with electric actuators for controlling their opening and closing states. The electric actuators are electrically connected to the central control system. By remotely controlling the opening and closing of different valves, automatic switching of different modes can be achieved during cementing construction, simplifying operations and improving cementing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the forward structure of an intelligent remote-controlled cement head of the present invention; Figure 2 It is a schematic diagram of the lateral structure of an intelligent remote-controlled cement head of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure along the AA section line.

[0019] The numbers in the figure represent: 10. Cement pipe body; 11. Union joint; 12. Upper cover cap; 13. Quick-release upper joint; 14. Quick-release lower joint; 15. Pressure sensor; 2. F-shaped high-pressure manifold; 21. Upper horizontal pipe; 22. Lower horizontal pipe; 23. Vertical pipe; 24. First injection port; 25. Slurry replacement plug valve; 26. Spare plug valve; 3. L-shaped high-pressure manifold; 31. Main pipe; 32. Branch pipe 33. Second injection port; 34. Third injection port; 35. Cleaning plug valve; 36. Ash injection plug valve; 4. Rubber plug baffle assembly; 41. Diaphragm; 42. Rotating shaft; 43. Handle; 44. Sensor; 45. Hexagonal nut; 46. Accommodating chamber; 5. Rotating stop pin assembly; 51. Valve seat; 52. Valve core; 53. Sealing end cover; 54. Stopper. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0022] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 3 , an intelligent remote-controlled cement head, comprising a cement pipe body 10; The upper end of the cement pipe body 10 is installed with an upper cap 12, and the lower end of the cement pipe body 10 is installed with a quick-release upper joint 13, and the lower end of the quick-release upper joint 13 is connected to the upper end of the quick-release lower joint 14 through a union joint 11; A rubber plug baffle assembly 4 and a rotating stop pin assembly 5 are provided in the middle of the cement pipe body 10. When the rubber plug baffle assembly 4 is in a closed state, the inner cavity of the cement pipe body 10 is divided into an upper cavity and a lower cavity which are not communicated with each other by the rubber plug baffle assembly 4. The upper cavity is used to place the rubber plug, and the rubber plug seat is above the rubber plug baffle assembly 4 in the closed state; the rotating stop pin assembly 5 is used to keep the rubber plug baffle assembly 4 in a closed state; The rubber plug baffle assembly 4 includes a diaphragm 41, a rotating shaft 42, a handle 43, a sensor 44, a hexagonal nut 45 and a receiving chamber 46. The side wall of the cement pipe body 10 is provided with a receiving chamber 46 that can completely receive the diaphragm 41. An extended end of the diaphragm 41 is rotatably connected to the rotating shaft 42. Both ends of the rotating shaft 42 pass through the side wall of the cement pipe body 10, and the rotating shaft 42 is rotatably connected to the inner wall of the receiving chamber 46 through a bearing. A handle 43 is fixedly mounted on one end of the rotating shaft 42, a hexagonal nut 45 is fixedly mounted on the other end of the rotating shaft 42, and a sensor 44 for monitoring the rotation state of the hexagonal nut 45 is arranged on the side wall of the cement pipe body 10; The rotating stopper pin assembly 5 comprises a valve seat 51, a valve core 52, a sealing end cover 53 and a stopper 54. The valve seat 51 is fixedly connected to the side wall of the cement pipe body 10, and a sealing end cover 53 is arranged on the outer side of the valve seat 51; the valve core 52 is rotatably mounted on the inner side of the valve seat 51, and a stopper 54 for preventing the diaphragm 41 from turning downward is fixedly mounted at an eccentric position of the valve core 52 near one end of the diaphragm 41; The present invention has a reasonable and compact structure and is easy to use. The movable valve core 52 drives the stopper 54 to flip, so that the stopper 54 releases the limit on the end of the diaphragm 41, and the diaphragm 41 can flip clockwise into the accommodating chamber 46, so that the rubber plug can be released stably; the sensor 44 can monitor the flipping state of the hexagonal nut 45, so that the operator can accurately know the flipping state of the diaphragm 41 to correctly judge the release of the rubber plug; At the same time, the diaphragm 41 is driven to rotate by rotating the handle 43, and the valve core 52 is rotated to drive the stopper 54 to return to the bottom of the diaphragm 41, so that the diaphragm 41 is mounted on the stopper 54, so that the diaphragm 41 can be fully retracted for subsequent operations.

[0023] Embodiment 2: In some embodiments, Figure 1 As shown, as a preferred embodiment of the present invention, an F-shaped high-pressure manifold 2 is arranged on the right side of the cement pipe body 10, and the F-shaped high-pressure manifold 2 includes an upper transverse pipe 21, a lower transverse pipe 22 and a longitudinal pipe 23, wherein the left end of the upper transverse pipe 21 is connected to the upper cavity of the cement pipe body 10 through a union joint 11, the left end of the lower transverse pipe 22 is connected to the lower cavity of the cement pipe body 10 through a union joint 11, and the right ends of the upper transverse pipe 21 and the lower transverse pipe 22 are connected to the longitudinal pipe 23 through a union joint 11; A first injection port 24 is provided at the lower end of the longitudinal pipe 23, a slurry replacement plug valve 25 is provided on the upper transverse pipe 21, and a standby plug valve 26 is provided on the lower transverse pipe 22; An L-shaped high-pressure manifold 3 is provided on the left side of the cement pipe body 10. The L-shaped high-pressure manifold 3 includes a main pipe 31 and a branch pipe 32. The right end of the main pipe 31 is connected to the lower cavity of the cement pipe body 10 through a union 11. The left end of the main pipe 31 is provided with a second injection port 33. The upper end of the branch pipe 32 is connected to the main pipe 31, and the lower end of the branch pipe 32 is provided with a third injection port 34. A cleaning cock 35 is provided on one side of the main pipe 31 close to the cement pipe body 10 , and a cement injection cock 36 is provided on the branch pipe 32 .

[0024] The outer ends of the slurry replacement plug valve 25, the standby plug valve 26, the cleaning plug valve 35, the ash injection plug valve 36 and the valve core 52 are all provided with electric actuator structures for controlling their opening and closing states. The electric actuator structures are electrically connected to the central control, and the electric actuators can use high-torque motors.

[0025] In the present invention, only the displacement plug valve 25 is opened, and the pre-fluid, cement slurry or displacement slurry enters from the first injection port 24, passes through the longitudinal pipe 23 and the upper horizontal pipe 21 in sequence, enters the cement pipe body 10, and is then injected into the wellhead; Only the cement injection plug valve 36 is opened, and the slurry enters from the second injection port 33, passes through the main pipe 31 and enters the cement pipe body 10, and then is injected into the wellhead; Open the valve core 52 to open the diaphragm 41 and open the cleaning cock 35 and the cement injection cock 36. Clean water enters from the third injection port 34, passes through the branch pipe 32 and the main pipe 31, and enters the cement pipe body 10 for cleaning.

[0026] By remotely controlling the opening and closing of different valves, automatic switching of different modes during cementing construction can be achieved, simplifying operations and improving cementing efficiency.

[0027] Embodiment 3: In some embodiments, Figure 1 As shown, as a preferred embodiment of the present invention, a pressure sensor for monitoring the pressure inside the pipe is provided on the side wall of the union joint 11 connecting the lower cross pipe 22 and the cement pipe body 10, and the pressure sensor is electrically connected to the central control.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent remote-controlled cement head, comprising a cement pipe body (10), characterized in that: An upper cap (12) is installed at the upper end of the cement pipe body (10), and a quick-install upper joint (13) is installed at the lower end of the cement pipe body (10); the lower end of the quick-install upper joint (13) is connected to the upper end of the quick-install lower joint (14) via a union joint (11); A rubber plug baffle assembly (4) and a rotating baffle pin assembly (5) are provided in the middle of the cement pipe body (10); when the rubber plug baffle assembly (4) is in a closed state, the inner cavity of the cement pipe body (10) is divided into an upper cavity and a lower cavity which are not communicated with each other by the rubber plug baffle assembly (4); the upper cavity is used to place the rubber plug, and the rubber plug seat is located above the rubber plug baffle assembly (4) in the closed state; the rotating baffle pin assembly (5) is used to keep the rubber plug baffle assembly (4) in the closed state; An F-shaped high-pressure manifold (2) is provided on the right side of the cement pipe body (10); An L-shaped high-pressure manifold (3) is arranged on the left side of the cement pipe body (10).

2. The intelligent remote-controlled cement head according to claim 1, characterized in that: The rubber plug baffle assembly (4) comprises a transverse partition (41), a rotating shaft (42), a handle (43) and a receiving chamber (46); a side wall of the cement pipe body (10) is provided with a receiving chamber (46) capable of completely receiving the transverse partition (41); an extended end of the transverse partition (41) is rotatably connected to the rotating shaft (42); two ends of the rotating shaft (42) pass through the side wall of the cement pipe body (10); and the rotating shaft (42) is rotatably connected to the inner wall of the receiving chamber (46) via a bearing.

3. The intelligent remote-controlled cement head according to claim 2, characterized in that: A handle (43) is fixedly mounted on one end of the rotating shaft (42), a hexagonal nut (45) is fixedly mounted on the other end of the rotating shaft (42), and a sensor (44) for monitoring the rotation state of the hexagonal nut (45) is arranged on the side wall of the cement pipe body (10).

4. The intelligent remote-controlled cement head according to claim 3, characterized in that: The rotary stop pin assembly (5) comprises a valve seat (51), a valve core (52), a sealing end cover (53) and a stopper (54); the valve seat (51) is fixedly connected to the side wall of the cement pipe body (10); the sealing end cover (53) is arranged on the outside of the valve seat (51); the valve core (52) is rotatably mounted on the inside of the valve seat (51); and a stopper (54) is fixedly mounted on the eccentric portion of the valve core (52) close to one end of the diaphragm (41) for preventing the diaphragm (41) from turning downward.

5. The intelligent remote-controlled cement head according to claim 4, characterized in that: The F-shaped high-pressure manifold (2) comprises an upper transverse tube (21), a lower transverse tube (22) and a longitudinal tube (23), wherein the left end of the upper transverse tube (21) is connected to the upper cavity of the cement pipe body (10) through a union joint (11), the left end of the lower transverse tube (22) is connected to the lower cavity of the cement pipe body (10) through a union joint (11), and the right ends of the upper transverse tube (21) and the lower transverse tube (22) are connected to the longitudinal tube (23) through a union joint (11); and a first injection port (24) is provided at the lower end of the longitudinal tube (23).

6. The intelligent remote-controlled cement head according to claim 5, characterized in that: A slurry replacement plug valve (25) is provided on the upper transverse pipe (21), and a standby plug valve (26) is provided on the lower transverse pipe (22).

7. The intelligent remote-controlled cement head according to claim 6, characterized in that: An L-shaped high-pressure manifold (3) is arranged on the left side of the cement pipe body (10). The L-shaped high-pressure manifold (3) comprises a main pipe (31) and a branch pipe (32). The right end of the main pipe (31) is connected to the lower cavity of the cement pipe body (10) via a union joint (11), and the left end of the main pipe (31) is provided with a second injection port (33); the upper end of the branch pipe (32) is connected to the main pipe (31), and the lower end of the branch pipe (32) is provided with a third injection port (34).

8. The intelligent remote-controlled cement head according to claim 7, characterized in that: A cleaning plug valve (35) is provided on one side of the main pipe (31) close to the cement pipe body (10), and a cement injection plug valve (36) is provided on the branch pipe (32).

9. The intelligent remote-controlled cement head according to claim 8, characterized in that: A pressure sensor for monitoring the pressure inside the pipe is provided on the side wall of the union joint (11) connecting the lower transverse pipe (22) and the cement pipe body (10), and the pressure sensor is electrically connected to the central control.

10. The intelligent remote-controlled cement head according to claim 9, characterized in that: The outer ends of the slurry replacement plug valve (25), the standby plug valve (26), the cleaning plug valve (35), the ash injection plug valve (36) and the valve core (52) are all provided with an electric actuator structure for controlling the opening and closing states thereof, and the electric actuator structure is electrically connected to the central control.

Images