Well head gas adsorption, purification and recovery process method

Abstract

A wellhead gas adsorption, purification and recovery process method relates to the technical field of petroleum equipment, and comprises a feeding pipeline, an oil gas absorption tower, an absorbent desorption tower, an oil gas recovery tower, a first oil gas adsorption tower and a second oil gas adsorption tower, the feeding pipeline is connected with the oil gas absorption tower, and the upper part of the oil gas absorption tower is communicated with the bottom of the absorbent desorption tower through a pipeline; the lower portion of the oil-gas absorption tower is connected with the top of the oil-gas recovery tower through a pipeline, the bottom of the oil-gas absorption tower is connected with the lower portion of the absorbent desorption tower through a pipeline, and the middle of the pipeline is connected with the top of the absorbent desorption tower through a pipeline. The top of the oil-gas recovery tower is connected with a lean absorbent pipeline; the bottom of the oil-gas absorption tower is connected with a rich absorbent pipeline; the top of the oil gas absorption tower is respectively connected with the oil gas adsorption tower I and the oil gas adsorption tower II through pipelines. According to the wellhead gas adsorption, purification and recovery process method, scattered gas is efficiently recovered, purified and collected, and environmental pollution is avoided.

Description

Technical field:

[0001] The invention relates to the technical field of petroleum equipment, and in particular to a wellhead gas adsorption purification and recovery process method. Background technology:

[0002] Wellhead gas recovery equipment is mainly used for the purification and treatment of scattered gas sources such as coalbed methane, oilfield associated gas, tight gas, shale gas, and conventional gas wells, and pressurization to tank truck transportation. In the process of oil and gas extraction in my country, all major oil and gas fields have test wells, marginal wells, and scattered wells. The natural gas produced by these wells cannot be transported by pipeline for various reasons. In the past, most of this natural gas was directly or indirectly discharged into the atmosphere in the form of air defense or flares. With the increasing domestic and global environmental protection pressures, and the intensification of the imbalance between domestic natural gas supply and demand, the recovery of such scattered natural gas has gradually begun to be taken seriously. The recovery of various types of scattered gas across the country is imperative. . Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a wellhead gas adsorption purification and recovery process method, which can efficiently recover, purify and collect scattered gas to avoid environmental pollution.

[0004] In order to solve the problems existing in the background technology, the present invention adopts the following technical scheme: comprising a feed pipeline, an oil and gas absorption tower, an absorbent desorption tower, an oil and gas recovery tower, an oil and gas absorption tower 1 and an oil and gas absorption tower 2, the feed pipeline is connected to the oil and gas absorption tower, a flow meter and a fan are installed on the feed pipeline, the upper part of the oil and gas absorption tower is connected to the bottom of the absorbent desorption tower through a pipeline, an absorbent pump is installed on the pipeline, the lower part of the oil and gas absorption tower is connected to the top of the oil and gas recovery tower through a pipeline, the bottom of the oil and gas absorption tower is connected to the lower part of the absorbent desorption tower through a pipeline, a control valve 1 is installed on the pipeline, the middle part of the pipeline is connected to the top of the absorbent desorption tower through a pipeline, and the pipeline A control valve 2 is installed. The top of the absorbent desorption tower is connected to the bottom of the oil and gas recovery tower through a pipeline, and a vacuum pump is installed on the pipeline. The top of the oil and gas recovery tower is connected to the lean absorbent pipeline, and a lean absorbent pump is installed on the lean absorbent pipeline. The bottom of the oil and gas absorption tower is connected to the rich absorbent pipeline, and a rich absorbent pump is installed on the rich absorbent pipeline. The top of the oil and gas absorption tower is respectively connected to the oil and gas adsorption tower 1 and the oil and gas adsorption tower 2 through pipelines, and control valves 3 and 4 are respectively installed on the pipelines. The oil and gas adsorption tower 1 and the oil and gas adsorption tower 2 are respectively connected to the pipeline between the absorbent desorption tower and the oil and gas recovery tower through pipelines, and control valves 5 and 6 are respectively installed on the pipelines.

[0005] The pipeline installed on the pipeline at the control valve is located at the feed end of the control valve.

[0006] The tops of the oil and gas adsorption tower 1 and the oil and gas adsorption tower 2 are respectively provided with discharge pipes, and the control valve 7 and the control valve 8 are respectively installed on the discharge pipes.

[0007] The beneficial effect of the present invention is that the present invention can efficiently recover, purify and collect scattered gas through the cooperation of the oil and gas absorption tower, thereby avoiding environmental pollution. Description of the drawings:

[0008] Figure 1 It is a schematic diagram of the structure of the present invention. Specific implementation method:

[0009] Reference Figure 1 The present invention specifically adopts the following implementation mode: it includes a feed pipeline, an oil and gas absorption tower 3, an absorbent desorption tower 5, an oil and gas recovery tower 7, an oil and gas absorption tower 10 and an oil and gas absorption tower 2 11, the feed pipeline is connected to the oil and gas absorption tower 3, a flow meter 1 and a fan 2 are installed on the feed pipeline, the upper part of the oil and gas absorption tower 3 is connected to the bottom of the absorbent desorption tower 5 through a pipeline, an absorbent pump 4 is installed on the pipeline, the lower part of the oil and gas absorption tower 3 is connected to the top of the oil and gas recovery tower 7 through a pipeline, the bottom of the oil and gas absorption tower 3 is connected to the lower part of the absorbent desorption tower 5 through a pipeline, a control valve 19 is installed on the pipeline, the middle part of the pipeline is connected to the top of the absorbent desorption tower 5 through a pipeline, and a control valve 2 18 is installed on the pipeline, the absorption tower 3 is connected to the top of the absorbent desorption tower 5 through a pipeline, and the absorption tower 3 is connected to the bottom of the absorbent desorption tower 5 through a pipeline. The top of the absorbent desorption tower 5 is connected to the bottom of the oil and gas recovery tower 7 through a pipeline, and a vacuum pump 6 is installed on the pipeline. The top of the oil and gas recovery tower 7 is connected to the lean absorbent pipeline, and a lean absorbent pump 9 is installed on the lean absorbent pipeline. The bottom of the oil and gas absorption tower 7 is connected to the rich absorbent pipeline, and a rich absorbent pump 8 is installed on the rich absorbent pipeline. The top of the oil and gas absorption tower 3 is connected to the oil and gas absorption tower 10 and the oil and gas absorption tower 2 11 through pipelines, respectively, and control valves 3 12 and 4 15 are installed on the pipelines, respectively. The oil and gas absorption tower 10 and the oil and gas absorption tower 2 11 are connected to the pipeline between the absorbent desorption tower 5 and the oil and gas recovery tower 7 through pipelines, and control valves 5 13 and 6 14 are installed on the pipelines. The pipeline installed on the pipeline where the control valve 19 is located is located at the feed end of the control valve 19. The tops of the oil and gas absorption tower 10 and the oil and gas absorption tower 2 11 are respectively provided with discharge pipes, and control valves 7 16 and 8 17 are respectively installed on the discharge pipes.

[0010] In the present wellhead gas adsorption purification and recovery process method, the gas enters the oil and gas absorption tower 3 in a scattered manner through the feed pipeline, is measured by the flow meter 1 when entering, is introduced by the fan 2, enters the oil and gas absorption tower 3 for absorption, and then enters the absorbent desorption tower 5 and the oil and gas recovery tower 7 in turn. The oil and gas absorption tower 3, the absorbent desorption tower 5 and the oil and gas recovery tower 7 are connected by pipelines respectively, and control valves are installed on the pipelines to control the adsorption recovery.

[0011] In summary, the wellhead gas adsorption purification and recovery process method, through the cooperation of the oil and gas absorption tower, the absorbent desorption tower and the oil and gas adsorption tower, can efficiently recover, purify and collect the scattered gas, thus avoiding environmental pollution.

Claims

1. A wellhead gas adsorption purification and recovery process, characterized in that: The invention comprises a feed pipeline, an oil and gas absorption tower (3), an absorbent desorption tower (5), an oil and gas recovery tower (7), an oil and gas absorption tower 1 (10) and an oil and gas absorption tower 2 (11), wherein the feed pipeline is connected to the oil and gas absorption tower (3), a flow meter (1) and a fan (2) are installed on the feed pipeline, the upper part of the oil and gas absorption tower (3) is connected to the bottom of the absorbent desorption tower (5) through a pipeline, an absorbent pump (4) is installed on the pipeline, the lower part of the oil and gas absorption tower (3) is connected to the top of the oil and gas recovery tower (7) through a pipeline, the bottom of the oil and gas absorption tower (3) is connected to the lower part of the absorbent desorption tower (5) through a pipeline, a control valve 1 (19) is installed on the pipeline, the middle part of the pipeline is connected to the top of the absorbent desorption tower (5) through a pipeline, and a control valve 2 (18) is installed on the pipeline, the absorbent desorption tower (5) The top is connected to the bottom of the oil and gas recovery tower (7) through a pipeline, and a vacuum pump (6) is installed on the pipeline. The top of the oil and gas recovery tower (7) is connected to a lean absorbent pipeline, and a lean absorbent pump (9) is installed on the lean absorbent pipeline. The bottom of the oil and gas absorption tower (7) is connected to a rich absorbent pipeline, and a rich absorbent pump (8) is installed on the rich absorbent pipeline. The top of the oil and gas absorption tower (3) is connected to the oil and gas adsorption tower 1 (10) and the oil and gas adsorption tower 2 (11) through pipelines, respectively, and control valves 3 (12) and 4 (15) are installed on the pipelines, respectively. The oil and gas adsorption tower 1 (10) and the oil and gas adsorption tower 2 (11) are connected to the pipeline between the absorbent desorption tower (5) and the oil and gas recovery tower (7) through pipelines, respectively, and control valves 5 (13) and 6 (14) are installed on the pipelines, respectively.

2. The wellhead gas adsorption purification and recovery process according to claim 1, characterized in that: The pipeline installed on the pipeline where the control valve 1 (19) is located is located at the feed end of the control valve 1 (19).

3. The wellhead gas adsorption purification and recovery process according to claim 1, characterized in that: The oil and gas adsorption tower 1 (10) and the oil and gas adsorption tower 2 (11) are respectively provided with discharge pipes at the top, and control valve 7 (16) and control valve 8 (17) are respectively installed on the discharge pipes.

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