Remote start-stop system for shale gas compressor

Abstract

The utility model discloses a shale gas compressor remote start-stop system which comprises a compressor control cabinet, a reset button, a start / stop button, a remote / local button and a compressor inlet electric valve, a combustible gas alarm instrument is connected to an inner top plate of a compressor through bolts, the combustible gas alarm instrument is connected with the compressor control cabinet through a signal line, and the compressor control cabinet is connected with the reset button. A video monitoring ball machine is fixedly connected to the inner side wall of the compressor through bolts, and the video monitoring ball machine is connected with the gas collection station control cabinet through an optical cable. And a compressor inlet electric valve is mounted on the compressor front-end pipeline through a flange. The remote starting and stopping system for the shale gas compressor solves the technical problems that in the prior art, manpower consumption is large, consumed time is long, and personal safety risks are large.

Description

Technical Field

[0001] The utility model relates to the field of pressurized mining of shale gas development, and in particular to a remote start and stop system for a shale gas compressor. Background Art

[0002] The extraction of atmospheric shale gas is generally accompanied by the discharge of formation water, that is, the extracted shale gas contains water, which may cause some atmospheric shale gas wells to have liquid accumulation in the wellbore due to insufficient formation energy and excessive formation water. Excessive liquid accumulation in the gas well may even cause it to be flooded and unable to produce continuously normally, so the compressor wellhead suction method is adopted. The compressor suction at the wellhead can reduce the wellhead pressure, increase the production pressure difference of the gas well, promote continuous liquid and gas discharge from the gas well, and improve the production efficiency of the gas well.

[0003] In the later stages of gas production from atmospheric-pressure shale gas, the wellhead pressure and airflow will become unstable, causing the compressor to shut down frequently due to insufficient intake pressure. This requires that people be stationed on site in day and night shifts to manually start the machine, which is very time-consuming and resource-intensive. Moreover, the compressor is a high-pressure equipment, and employees frequently and manually operate it for a long time, posing a risk to their personal safety.

[0004] Currently, compressors used in shale gas development have the problems of high labor consumption, long time consumption and great personal safety risks. Utility Model Content

[0005] The utility model aims to provide a shale gas produced water gathering and transportation automation system and control method to solve the technical problems of high manpower consumption, long time consumption and high environmental risk in the prior art.

[0006] The utility model is implemented by adopting the following technical scheme: a shale gas compressor remote start and stop system, including a compressor control cabinet, a reset button, a start / stop button, a remote / local button, and a compressor inlet electric valve. A combustible gas alarm is connected to the top plate inside the compressor by bolts, and the combustible gas alarm is connected to the compressor control cabinet by a signal line. A video surveillance camera is fixedly connected to the side wall inside the compressor by bolts, and the video surveillance camera is connected to the gas gathering station control cabinet by an optical cable.

[0007] Furthermore, a reset button, a start / stop button, and a remote / local button are fixed to the door of the compressor control cabinet by bolts, and the compressor control cabinet is connected to the gas gathering station control cabinet through a signal line.

[0008] Furthermore, the gas gathering station control cabinet is connected to the compressor inlet electric valve via a signal line.

[0009] Furthermore, the compressor inlet electric valve is installed on the front end pipeline of the compressor by means of a flange, and the compressor inlet electric valve is connected to the separator through a pipeline.

[0010] Furthermore, the separator is connected to the wellhead electric valve through a pipeline, and the wellhead electric valve is connected to the oil pipe channel and the casing channel through a flange.

[0011] Furthermore, the oil pipe channel and the casing channel are connected to the gas tree through flanges.

[0012] The beneficial effects of the utility model are as follows: the utility model can realize effective cutoff of the production process under abnormal production conditions by installing a wellhead electric valve at the gas production tree and an electric valve on the compressor inlet pipeline, and is a supporting equipment for the remote start and stop function of the compressor; when the compressor is remotely started, it is necessary to adjust the opening of the two electric valves so that the compressor intake pressure is within the allowable range; when the compressor is remotely stopped, it is necessary to close the two electric valves in time to avoid gas leakage in the production process.

[0013] By connecting the compressor control cabinet to the gas gathering station control cabinet through a signal line, the equipment, valve status and alarm information of the compressor can be read based on the existing SCADA system, and remote reset and start / stop commands can be issued to the compressor.

[0014] The realization of the above functions reduces the labor intensity and time of the on-site gas production team and reduces the labor cost during the gas production stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of an automated system for gathering and transporting produced water from shale gas;

[0017] In the figure: 1- gas tree; 2- oil pipe channel; 3- casing channel; 4- wellhead electric valve; 5- separator; 6- compressor inlet electric valve; 7- video surveillance camera; 8- combustible gas alarm; 9- compressor control cabinet; 10- compressor; 11- reset button; 12- start / stop button; 13- remote / local button; 14- gas gathering station control cabinet. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0020] like Figure 1 As shown, a shale gas produced water gathering and transportation automation system includes a compressor control cabinet 9, a reset button 11, a start / stop button 12, a remote / local button 13, and a compressor inlet electric valve 6. The internal top plate of the compressor 10 is connected to a combustible gas alarm 8 by bolts, and the combustible gas alarm 8 is connected to the compressor control cabinet 9 through a signal line. The internal side wall of the compressor 10 is fixedly connected to a video surveillance camera 7 by bolts, and the video surveillance camera 7 is connected to the gas gathering station control cabinet 14 through an optical cable. The reset button 11, the start / stop button 12, and the remote / local button 13 are fixed to the door of the compressor control cabinet 9 by bolts, and the compressor control cabinet 9 is connected to the gas gathering station control cabinet 14 through a signal line. The gas gathering station control cabinet 14 is connected to the compressor inlet electric valve 6 through a signal line. The compressor inlet electric valve 6 is installed on the front pipeline of the compressor 10 by flange, and the compressor inlet electric valve 6 is connected to the separator 5 through a pipeline. The separator 5 is connected to the wellhead electric valve 4 through a pipeline, and the wellhead electric valve 5 is connected to the oil pipe channel 2 and the casing channel 3 through a flange. The oil pipe channel 2 and the casing channel 3 are connected to the gas production tree 1 through a flange.

[0021] When the compressor 10 needs remote start / stop operation, the remote / local button 13 needs to be turned to the remote position; when the compressor 10 needs local maintenance, troubleshooting, or on-site operation by employees, the remote / local button 13 needs to be turned to the local position to avoid compressor failure or employee injury due to remote misoperation.

[0022] When the compressor 10 needs to be started remotely, it is necessary to first remotely confirm the safety of the site through the combustible gas alarm 8 and the video surveillance camera 7, then open the wellhead electric valve 4 and the compressor inlet electric valve 6, and finally send a remote start command to the compressor 10.

[0023] When the compressor 10 needs to be remotely shut down, it is necessary to first close the wellhead electric valve 4 , then close the compressor inlet electric valve 6 , and finally send a remote shutdown command to the compressor 10 .

[0024] The above embodiments describe the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the changes and modifications made by the technicians in this field shall be within the scope of protection of the claims attached to the utility model.

Claims

1. A shale gas compressor remote start and stop system, characterized in that: The invention comprises a compressor control cabinet (9), a reset button (11), a start / stop button (12), a remote / local button (13), and a compressor inlet electric valve (6); a combustible gas alarm (8) is connected to the top plate of the compressor (10) by bolts; the combustible gas alarm (8) is connected to the compressor control cabinet (9) by a signal line; a video surveillance camera (7) is fixedly connected to the side wall of the compressor (10) by bolts; and the video surveillance camera (7) is connected to the gas gathering station control cabinet (14) by an optical cable.

2. A shale gas compressor remote start and stop system according to claim 1, characterized in that: A reset button (11), a start / stop button (12), and a remote / local button (13) are fixed to the door of the compressor control cabinet (9) by means of bolts, and the compressor control cabinet (9) is connected to the gas gathering station control cabinet (14) via a signal line.

3. A shale gas compressor remote start and stop system according to claim 1, characterized in that: The gas gathering station control cabinet (14) is connected to the compressor inlet electric valve (6) via a signal line.

4. A shale gas compressor remote start and stop system according to claim 1, characterized in that: The compressor inlet electric valve (6) is installed on the front end pipeline of the compressor (10) by means of a flange, and the compressor inlet electric valve (6) is connected to the separator (5) through a pipeline.

5. A shale gas compressor remote start and stop system according to claim 4, characterized in that: The separator (5) is connected to the wellhead electric valve (4) via a pipeline, and the wellhead electric valve (4) is connected to the oil pipe channel (2) and the casing channel (3) via a flange.

6. A shale gas compressor remote start and stop system according to claim 5, characterized in that: The oil pipe channel (2) and the casing channel (3) are connected to the gas tree (1) via flanges.

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