Gathering and transportation main line block valve group pry

Abstract

The utility model discloses a gathering and transportation trunk line block valve group pry, which comprises a gas gathering trunk line (1), a gas gathering branch line (5), a produced water trunk line (15), a produced water branch line (13) and a pry base (9), the gas gathering trunk line (1) and the produced water trunk line (15) are both fixed on the pry base (9) through pipe clamps (7), nitrogen injection ports are arranged on the gas gathering trunk line (1) and the gas gathering branch line (5), a produced water block gate valve (14) is arranged on the produced water trunk line (15), and the produced water block gate valve (14) is arranged on the pry base (9). The produced water branch line (13) is provided with a produced water branch line cut-off gate valve (12), the gas collection branch line (5) is communicated with the gas collection main line (1), and the produced water branch line (13) is communicated with the produced water main line (15). The technical problems that in the prior art, the installation and construction period is long, newly-added branch lines need to stop transmission of main lines, and branch line truncation is not tight are solved.

Description

Technical Field

[0001] The utility model relates to the field of gas and water gathering and transportation in shale gas development, and in particular to a gathering and transportation trunk line cut-off valve group skid. Background Art

[0002] The scale of atmospheric shale gas field mining is large, and the gas production platforms are relatively scattered. In order to centrally process and sell the shale gas produced by each platform and centrally process the produced water to meet the standards for external discharge, a gathering and transportation pipeline network system covering the entire gas field has been specially established, with a total mileage of hundreds or thousands of kilometers. The gathering and transportation pipeline network system is interconnected. Once a section of the pipeline is damaged and leaked due to third-party damage, geological disasters, etc., or the pipeline is rerouted during construction, it is necessary to immediately cut off the upstream and downstream to avoid large-scale leakage of shale gas and produced water, causing environmental pollution, and even explosion accidents.

[0003] The emergency shut-off device of the gathering and transportation pipeline network is generally located in the valve pool. However, the traditional gathering and transportation trunk line shut-off device has problems such as long installation and construction period, the need to stop the trunk line to add a new branch line, and loose branch line shut-off. Utility Model Content

[0004] The utility model provides a gathering and transportation trunk line shutoff valve group skid to solve the technical problems in the prior art of long installation and construction period, main line shutdown required for newly added branch lines, and loose branch line shutoff.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A gas gathering trunk line shutoff valve group skid comprises a gas gathering trunk line, a gas gathering branch line, a produced water trunk line, a produced water branch line and a skid base, wherein the gas gathering trunk line and the produced water trunk line are fixed to the skid base through pipe clamps, nitrogen injection ports are arranged on the gas gathering trunk line and the gas gathering branch line, a produced water shutoff gate valve is arranged on the produced water trunk line, a produced water branch line shutoff gate valve is arranged on the produced water branch line, the gas gathering branch line is connected to the gas gathering trunk line, and the produced water branch line is connected to the produced water trunk line.

[0007] Furthermore, a gas gathering trunk line nitrogen injection stop valve is provided on the nitrogen injection port on the gas gathering main line, and the other end of the gas gathering trunk line nitrogen injection stop valve is connected to the gas gathering trunk line nitrogen injection ball valve through a flange.

[0008] Furthermore, the gas gathering main line is axially connected to the gas gathering trunk line shut-off ball valve through a flange, and the gas gathering branch line is connected to the gas gathering main line by welding and the two are vertically distributed. The gas gathering trunk line nitrogen injection stop valve, gas gathering trunk line nitrogen injection ball valve, and gas gathering trunk line shut-off ball valve are all two groups and are symmetrically arranged about the gas gathering branch line.

[0009] Furthermore, the gas gathering branch line is connected to a gas gathering branch line cut-off ball valve via a flange along its axial direction, and a gas gathering branch line nitrogen injection ball valve is arranged on the nitrogen injection port of the gas gathering branch line.

[0010] Furthermore, an 8-shaped blind plate for a gas-gathering branch line is sandwiched between the flange on one side of the gas-gathering branch line and the gas-gathering branch line cut-off ball valve.

[0011] Furthermore, the produced water shutoff gate valve is connected to the produced water trunk line through a flange, the produced water branch line is vertically welded to the produced water trunk line, and the produced water shutoff gate valve is divided into two groups and respectively arranged on both sides of the produced water branch line.

[0012] Furthermore, an 8-shaped blind plate for the produced water branch line is clamped between the produced water branch line and a flange on one side of the produced water branch line shut-off gate valve.

[0013] Based on the above technical solution, the following technical effects can be produced:

[0014] The utility model provides a gathering and transportation trunk line shut-off valve group skid. The utility model provides nitrogen injection ports on gas pipelines in various directions of the gas gathering trunk line and the gas gathering branch line on the valve group skid, so as to facilitate nitrogen replacement before hot work. The transportation directions of the gas gathering branch line and the produced water branch line can be flexibly adjusted by switching on and off the gas gathering trunk line shut-off ball valve, the gas gathering branch line shut-off ball valve, the produced water trunk line shut-off gate valve and the produced water branch line shut-off gate valve. If the upstream pipeline of the valve group skid needs to be repaired due to an emergency, the upstream gas can be shut off by the above-ground shut-off valve group skid, so that the downstream gas gathering station and the gas gathering station in the direction of the gas gathering branch line can continue normal production. The valve group skid has a reserved branch line access port, and the newly added branch line can be subsequently connected to the valve group skid through the reserved valve and merged into the gathering and transportation trunk line. By using 8-shaped blind plates for gas-gathering branch lines and 8-shaped blind plates for produced water branch lines, the sealing of branch line cutoff is ensured; batch skid-mounted production of trunk line cutoff valve group skids, rapid on-site installation, uninterrupted transmission of new branch lines, and tight branch line cutoff without leakage are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] In the figure: 1. Gas production trunk line; 2. Nitrogen injection stop valve for gas gathering trunk line; 3. Nitrogen injection ball valve for gas gathering trunk line; 4. Cut-off ball valve for gas gathering trunk line; 5. Gas gathering branch line; 6. Cut-off ball valve for gas gathering branch line; 7. Pipe clamp; 8. Nitrogen injection ball valve for gas gathering branch line; 9. Skid base; 10. 8-shaped blind plate for gas gathering branch line; 11. 8-shaped blind plate for produced water branch line; 12. Cut-off gate valve for produced water branch line; 13. Produced water branch line; 14. Cut-off gate valve for produced water trunk line; 15. Produced water trunk line. DETAILED DESCRIPTION

[0017] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 As shown, a gas gathering trunk line shut-off valve group skid comprises a gas gathering trunk line 1, a gas gathering branch line 5, a produced water trunk line 15, a produced water branch line 13 and a skid base 9, wherein the gas gathering trunk line 1 and the produced water trunk line 15 are fixed to the skid base 9 by pipe clamps 7, nitrogen injection ports are provided on the gas gathering trunk line 1 and the gas gathering branch line 5, a produced water shut-off gate valve 14 is provided on the produced water trunk line 15, and a produced water branch line shut-off gate valve 12 is provided on the produced water branch line 13, the gas gathering branch line 5 is connected to the gas gathering trunk line 1, and the produced water branch line 13 is connected to the produced water trunk line 15.

[0022] According to an embodiment of the utility model, a gas gathering trunk line nitrogen injection stop valve 2 is provided on the nitrogen injection port on the gas gathering main line 1, and the other end of the gas gathering trunk line nitrogen injection stop valve 2 is connected to the gas gathering trunk line nitrogen injection ball valve 3 through a flange.

[0023] According to one embodiment of the utility model, the gas gathering main line 1 is axially connected to the gas gathering trunk line shut-off ball valve 4 through a flange, the gas gathering branch line 5 is connected to the gas gathering main line 1 by welding and the two are vertically distributed, and the gas gathering trunk line nitrogen injection stop valve 2, the gas gathering trunk line nitrogen injection ball valve 3, and the gas gathering trunk line shut-off ball valve 4 are all two groups and are symmetrically arranged about the gas gathering branch line 5.

[0024] According to an embodiment of the utility model, the gas gathering branch line 5 is connected to the gas gathering branch line cut-off ball valve 6 via a flange along its axial direction, and a gas gathering branch line nitrogen injection ball valve 8 is provided on the nitrogen injection port of the gas gathering branch line 5 .

[0025] According to an embodiment of the utility model, a gas-gathering branch line 8-shaped blind plate 10 is sandwiched between the gas-gathering branch line 5 and a flange on one side of the gas-gathering branch line cut-off ball valve 6 .

[0026] According to an embodiment of the utility model, the produced water shutoff gate valve 14 is connected to the produced water trunk line 15 through a flange, the produced water branch line 13 is vertically welded to the produced water trunk line 15, and the produced water shutoff gate valve 14 is divided into two groups and respectively arranged on both sides of the produced water branch line 13.

[0027] According to an embodiment of the utility model, a produced water branch line 8-shaped blind plate 11 is sandwiched between the produced water branch line 13 and a flange on one side of the produced water branch line cut-off gate valve 12 .

[0028] In this embodiment, when leakage occurs upstream or downstream of the gas-gathering trunk shut-off valve group pry or planned hot work occurs, the gas-gathering trunk shut-off ball valve 4 can be closed first, and the gas-gathering trunk nitrogen injection stop valve 2 and the gas-gathering trunk nitrogen injection ball valve 3 can be opened. After the pressure relief is completed, nitrogen can be injected into the gas-gathering trunk 1 through the gas-gathering trunk nitrogen injection ball valve 3 and the gas-gathering trunk nitrogen injection stop valve 2 to replace the shale gas, thereby ensuring the safety of the subsequent hot work.

[0029] The utility model is described in detail above with reference to the accompanying drawings and embodiments, but the utility model is not limited to the above embodiments, and various changes can be made within the scope of ordinary technicians in the field without departing from the purpose of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope of protection of the utility model.

Claims

1. A gas gathering trunk line shutoff valve assembly skid, comprising a gas gathering trunk line (1), a gas gathering branch line (5), a produced water trunk line (15), a produced water branch line (13) and a skid base (9), characterized in that: The gas gathering trunk line (1) and the produced water trunk line (15) are both fixed to the skid base (9) via pipe clamps (7); nitrogen injection ports are provided on the gas gathering trunk line (1) and the gas gathering branch line (5); a produced water shutoff gate valve (14) is provided on the produced water trunk line (15); and a produced water branch line shutoff gate valve (12) is provided on the produced water branch line (13); the gas gathering branch line (5) is connected to the gas gathering trunk line (1), and the produced water branch line (13) is connected to the produced water trunk line (15).

2. A gathering and transportation trunk line shut-off valve group skid according to claim 1, characterized in that: A gas gathering trunk line nitrogen injection stop valve (2) is provided on the nitrogen injection port on the gas gathering trunk line (1), and the other end of the gas gathering trunk line nitrogen injection stop valve (2) is connected to a gas gathering trunk line nitrogen injection ball valve (3) via a flange.

3. A gathering and transportation trunk line shut-off valve group skid according to claim 2, characterized in that: The gas gathering trunk line (1) is axially connected to a gas gathering trunk line cut-off ball valve (4) via a flange, the gas gathering branch line (5) is connected to the gas gathering trunk line (1) via welding and the two are vertically distributed, and the gas gathering trunk line nitrogen injection stop valve (2), the gas gathering trunk line nitrogen injection ball valve (3), and the gas gathering trunk line cut-off ball valve (4) are all in two groups and are symmetrically arranged with respect to the gas gathering branch line (5).

4. The intercepting valve group skid for a gathering and transportation trunk line according to claim 1 is characterized in that: The gas gathering branch line (5) is connected to a gas gathering branch line cut-off ball valve (6) via a flange along its axial direction, and a gas gathering branch line nitrogen injection ball valve (8) is provided on the nitrogen injection port of the gas gathering branch line (5).

5. A gathering and transportation trunk line shut-off valve group skid according to claim 4, characterized in that: A gas-gathering branch line 8-shaped blind plate (10) is sandwiched between the gas-gathering branch line (5) and a flange on one side of the gas-gathering branch line cut-off ball valve (6).

6. The intercepting valve group skid for a gathering and transportation trunk line according to claim 1 is characterized in that: The produced water cut-off gate valve (14) is connected to the produced water trunk line (15) via a flange, the produced water branch line (13) is vertically welded to the produced water trunk line (15), and the produced water cut-off gate valve (14) is provided in two groups, one on each side of the produced water branch line (13).

7. The intercepting valve group skid for a gathering and transportation trunk line according to claim 1 is characterized in that: A produced water branch line 8-shaped blind plate (11) is sandwiched between the produced water branch line (13) and a flange on one side of the produced water branch line cutoff gate valve (12).

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