A mud manifold distribution system

Abstract

The invention discloses a mud manifold distribution system, comprising three groups of mud tanks, two ground manifolds, a circulation tank and a mud remote distribution mechanism; the mud remote distribution mechanism is composed of three mud pumps, the mud pump comprises a shell, and the shell is provided with a liquid inlet, a wellbore, a circulation port and a piston assembly; the mud tank is connected with the liquid inlet of the mud pump, the circulation port of the mud pump is connected to the circulation tank through a circulation pipeline, the wellbore ports of the three mud pumps are connected, wherein the wellbore ports of two mud pumps are respectively connected to two ground manifolds, and a pipeline distribution valve is provided; the scheme designs a mud manifold distribution system with a remote distribution mechanism, which can conveniently realize the distribution and control between the mud tank, the ground manifold and the circulation tank, form a passage in the drilling state, and relieve pressure in the drilling stop state; the remote distribution mechanism can also control which ground manifold the mud goes through, so as to meet the needs of the actual drilling state.

Description

Technical Field

[0001] The invention relates to a mud manifold distribution system, belonging to the technical field of oil drilling equipment. Background Art

[0002] Most existing drilling mud manifolds are controlled and distributed through valves. The layout and distribution of pipelines and valves are relatively complex, and are not easy to operate and control, wasting a lot of manpower and material resources. Summary of the invention

[0003] The purpose of the present invention is to provide a mud manifold distribution system in order to overcome the deficiencies of the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a mud manifold distribution system, comprising three groups of mud tanks, two ground manifolds, a circulation tank and a mud remote distribution mechanism; the mud remote distribution mechanism is composed of three mud pumps, the mud pump comprises a shell, and the shell is provided with a liquid inlet, a wellhead, a circulation port and a piston assembly, the piston assembly controls the liquid inlet and the wellhead or the circulation port to form a passage; the three groups of mud tanks are respectively connected to the liquid inlets of the three mud pumps, the circulation ports of the three mud pumps are connected to the circulation tanks through circulation pipelines, and the wellheads of the three mud pumps are connected to each other, wherein the wellheads of two mud pumps are respectively connected to two ground manifolds, and pipeline distribution valves are provided at the two wellheads connected to the ground manifolds.

[0005] Preferably, one-way check valves are provided in the two ground manifolds.

[0006] Preferably, a passage connected to a circulation tank is provided on the pipeline connecting the mud tank and the liquid inlet.

[0007] Preferably, three mud pumps are arranged side by side, and a T-shaped three-way joint is provided at the wellhead of the middle mud pump. The wellheads of the mud pumps located on both sides are connected to the T-shaped three-way joint of the middle mud pump through corner three-way joints, and the corner three-way joints of the mud pumps located on both sides are connected to pipeline distribution valves.

[0008] Preferably, the pipeline distribution valve is a manual valve.

[0009] Preferably, the circulation ports of the three mud pumps are connected via a right-angle tee joint.

[0010] Preferably, the piston assembly includes a piston housing, an upper piston rod and a lower piston rod, and an upper piston slider and a lower piston slider are provided in the piston housing; the upper piston rod and the lower piston rod pass through the wellhead and the circulation port, and the upper piston rod and the lower piston rod are both provided with a wellhead gate plate and a circulation port gate plate; the upper piston slider drives the upper piston rod to move, and the lower piston slider drives the lower piston rod to move.

[0011] Preferably, an indicator rod cover is provided at the rear end of the piston housing, and the rear ends of the upper piston rod and the lower piston rod can extend into the indicator rod cover.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0013] This solution designs a mud manifold distribution system with a remote distribution mechanism, which can easily realize the distribution and control between the mud tank, the ground manifold and the circulation tank, form a passage in the drilling state, and relieve pressure in the drilling stop state; the remote distribution mechanism can also control which ground manifold the mud goes through, which can meet the needs of the actual drilling state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0015] Attached Figure 1 It is a schematic diagram of a mud manifold distribution system according to the present invention;

[0016] Attached Figure 2 for Figure 1 A magnified image of point A;

[0017] Attached Figure 3 It is a structural schematic diagram of the mud remote distribution mechanism of the present invention;

[0018] Attached Figure 4 It is a schematic structural diagram of the mud pump described in the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, a mud manifold distribution system described in the present invention comprises three groups of mud tanks 1, two ground manifolds 2, a circulation tank and a mud remote distribution mechanism. The circulation tank is not shown in the figure. The two ground manifolds 2 are used to connect to the derrick manifold, and one-way check valves are provided in the two ground manifolds 2.

[0021] like Figure 2-4 As shown, the mud remote distribution mechanism is composed of three mud pumps arranged side by side. The mud pump comprises a housing 3 , on which a liquid inlet 4 , a well opening 5 , a circulation opening 6 and a piston assembly 7 are arranged.

[0022] The three groups of mud tanks 1 are connected to the liquid inlets 4 of the three mud pumps through pipelines respectively, and the pipelines connecting the mud tanks 1 and the liquid inlets 4 are also provided with passages connected to the circulation tank, and a control valve needs to be provided on the passages.

[0023] A T-shaped three-way joint is provided at the wellhead 5 of the mud pump located in the middle, and the wellheads 5 of the mud pumps located on both sides are connected to the T-shaped three-way joint of the middle mud pump through corner three-way joints. Pipeline distribution valves 9 are provided on the corner three-way joints on both sides, and two ground manifolds 2 are respectively connected through the pipeline distribution valves 9.

[0024] The circulation ports 6 of the three mud pumps are connected via a right-angle tee joint and connected to a circulation tank via a circulation pipeline 8 .

[0025] The main body of the piston assembly 7 is a hydraulic piston cylinder, and the piston assembly 7 controls the liquid inlet 4 to form a passage with the wellhead 5 or the circulation port 6; the piston assembly 7 comprises a piston housing 11, an upper piston rod 12 and a lower piston rod 13, and an upper piston slider 14 and a lower piston slider 15 are arranged in the piston housing 11; the upper piston rod 12 and the lower piston rod 13 pass through the wellhead 5 and the circulation port 6, and the upper piston rod 12 and the lower piston rod 13 are both provided with a wellhead gate 16 and a circulation port gate 17; the upper piston slider 14 drives the upper piston rod 12 to move, and the lower piston slider 15 drives the lower piston rod 13 to move; the rear end of the piston housing 11 is provided with an indicator rod cover 18, and the rear ends of the upper piston rod 12 and the lower piston rod 13 can extend into the indicator rod cover 18 to display the working status of the piston rod.

[0026] In the drilling state, the upper piston slider 14 and the lower piston slider 15 move forward synchronously under the action of hydraulic pressure, so that the circulation port gate 17 blocks the circulation port 6, and the wellhead gate 16 opens the wellhead 5; at this time, the liquid inlet 4 and the wellhead 5 form a passage, allowing the mud to flow to the ground manifold 2.

[0027] In the drilling stop state, the upper piston slider 14 and the lower piston slider 15 move backward synchronously under the action of hydraulic pressure, so that the wellhead gate 16 blocks the wellhead 5, and the circulation port gate 17 opens the circulation port 6; at this time, the liquid inlet 4 and the circulation port 6 form a passage, allowing the mud to pass to the circulation tank to release pressure.

[0028] When not in operation, such as during maintenance, the upper piston slider 14 and the lower piston slider 15 can move in an offset manner, one front and one rear. At this time, the wellhead 5 and the circulation port 6 will be blocked by the wellhead gate 16 and the circulation port gate 17 of the upper piston rod 12 or the lower piston rod 13, respectively, to ensure safety.

[0029] The pipeline distribution valve 9 is manually controlled. Since the wellheads 5 of the three mud pumps are connected, when drilling, one of the pipeline distribution valves 9 is closed and the mud will all flow to the other surface manifold 2, thereby realizing flow control of the two surface manifolds 2.

[0030] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A mud manifold distribution system, characterized in that: The invention comprises three groups of mud tanks (1), two surface manifolds (2), a circulation tank and a mud remote distribution mechanism; the mud remote distribution mechanism comprises three mud pumps, the mud pump comprising a housing (3), the housing (3) being provided with a liquid inlet (4), a well port (5), a circulation port (6) and a piston assembly (7), the piston assembly (7) controlling the liquid inlet (4) to form a passage with the well port (5) or the circulation port (6); the three groups of mud tanks (1) are respectively connected to the liquid inlets (4) of the three mud pumps, the circulation ports (6) of the three mud pumps are connected to the circulation tanks via circulation pipelines (8), the well ports (5) of the three mud pumps are connected to each other, wherein the well ports (5) of two mud pumps are respectively connected to the two surface manifolds (2), and pipeline distribution valves (9) are provided at the two well ports (5) connected to the surface manifolds (2); One-way check valves are provided in the two ground manifolds (2); The piston assembly (7) comprises a piston housing (11), an upper piston rod (12) and a lower piston rod (13); an upper piston slider (14) and a lower piston slider (15) are arranged in the piston housing (11); the upper piston rod (12) and the lower piston rod (13) pass through the wellhead (5) and the circulation port (6); the upper piston rod (12) and the lower piston rod (13) are both provided with a wellhead gate plate (16) and a circulation port gate plate (17); the upper piston slider (14) drives the upper piston rod (12) to move, and the lower piston slider (15) drives the lower piston rod (13) to move.

2. The mud manifold distribution system according to claim 1, characterized in that: A passage connected to a circulation tank is provided on the pipeline connecting the mud tank (1) and the liquid inlet (4).

3. The mud manifold distribution system according to claim 1, characterized in that: The three mud pumps are arranged side by side, a T-shaped three-way joint is arranged at the well opening (5) of the middle mud pump, the well openings (5) of the mud pumps located on both sides are connected to the T-shaped three-way joint of the middle mud pump through corner three-way joints, and the corner three-way joints of the mud pumps located on both sides are connected to the pipeline distribution valves (9).

4. The mud manifold distribution system according to claim 1 or 3, characterized in that: The pipeline distribution valve (9) is a manual valve.

5. The mud manifold distribution system according to claim 1, characterized in that: The circulation ports (6) of the three mud pumps are connected via a right-angle tee joint.

6. The mud manifold distribution system according to claim 1, characterized in that: The rear end of the piston housing (11) is provided with an indicating rod cover (18), and the rear ends of the upper piston rod (12) and the lower piston rod (13) can extend into the indicating rod cover (18).

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