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Skid-mounted device based on large cluster well group alcohol injection system

A cluster well and alcohol injection technology, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of inconvenient management of large cluster well groups, affecting production operation, wellhead parking, etc., and achieves convenience The effect of management, cost saving and land occupation reduction

Active Publication Date: 2015-10-14
XIAN CHANGQING TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The wellheads are dispersed, and alcohol is injected into the wellhead of a single well, which is not easy to manage for large cluster well groups;
[0007] 2. Maintenance of the alcohol injection pump at the wellhead may easily lead to shutdown of the wellhead and affect downstream production and operation

Method used

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  • Skid-mounted device based on large cluster well group alcohol injection system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a skid-mounted device based on a large cluster well group alcohol injection system, including a first manifold 15 communicating with a methanol tank through a first interface 1, a plurality of parallel methanol delivery pipelines 20, each The inlet end of the methanol delivery pipeline 20 is connected to the first header 15, and the other end is connected to the methanol outlet 19. The first header 15 and multiple methanol delivery pipelines 20 are all arranged on the skid 25;

[0023] A first valve 3 , a flow meter 4 , a second valve 5 , an alcohol injection pump 7 , a first ball valve 12 , and a second ball valve 14 are arranged in sequence between the inlet end of each methanol delivery pipeline 20 and the methanol outlet 19 .

[0024] Such as figure 1 As shown, the first interface 1 is connected to the incoming liquid pipeline of the methanol tank. Methanol enters the first manifold 15 through the first interface 1, and is distributed to eac...

Embodiment 2

[0027] On the basis of Embodiment 1, it also includes a plurality of first branches 21, a calibration manifold 16 communicated with each methanol delivery line 20, and its connection point is between the flowmeter 4 and the second valve 5; each methanol The flow meter 4 and the second valve 5 of the delivery pipeline 20 communicate with one end of the first branch 21, and the other end of the first branch 21 communicates with the calibration manifold 16, and the first branch 21 is provided with a third valve 6.

[0028] Such as figure 1 As shown, when the flowmeter 4 fails and the error is large, the third valve 6 is opened, and methanol enters the calibration manifold 16 through the third valve 6 for calibration.

Embodiment 3

[0030] On the basis of Embodiment 1, it also includes a plurality of second branches 22 and a plurality of third branches 23, between the alcohol injection pump 7 and the first ball valve 12 of each methanol delivery line 20 and the second branch 22 One end of the third branch 23 is connected, and the other end is connected with the second manifold 17, and the second manifold 17 is connected with the second interface 2;

[0031] Wherein, the second branch 22 is provided with a safety valve 8 , and the third branch 23 is provided with a ball valve 9 .

[0032] In this embodiment, there are two branch lines between the alcohol injection pump 7 and the first ball valve 12, such as figure 1 Shown:

[0033] The second branch 22: When the alcohol injection pump 7 fails, causing the methanol pump outlet methanol pressure to be higher than the constant pressure set by the safety valve 8, in order to avoid damage to the downstream pipeline, the safety valve 8 is opened to enter the se...

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Abstract

The invention provides a skid-mounted device based on a large cluster well group alcohol injection system. The skid-mounted device comprises a first header and a plurality of methanol alcohol conveying pipes connected in parallel, wherein the first header is communicated with a methanol alcohol tank through a first connector; the inlet end of each methanol alcohol conveying pipe is communicated with the first header; the other end of each methanol alcohol conveying pipe is connected with a methanol alcohol outlet; the first header and the methanol alcohol conveying pipes are arranged on a prying base. The skid-mounted device based on the large cluster well group alcohol injection system facilitates management of a large cluster well group, avoids wellhead stopping and influence on downstream production operation caused by trouble shooting of a wellhead alcohol injection pump, reduces the cost, reduces the land occupation and accelerates the construction progress.

Description

technical field [0001] The invention belongs to the technical field of gas field gathering and transportation, and in particular relates to a skid-mounted device based on an alcohol injection system of a large cluster well group. Background technique [0002] With the development of the economy, the country's demand for energy is increasing. As a clean energy, natural gas is developing rapidly. As the ground construction part of natural gas development, the construction scale is large and the number of construction stations is large. [0003] Large cluster wells have been widely popularized in gas field construction due to their advantages such as small area, few management points, and low construction costs. Large cluster wells mean that 16 to 20 gas wells are built in one well site, the pre-pressure of the well group is 6MPa to 10MPa higher, and the production is high (34×10 4 m 3 ~112×10 4 m 3 ), mainly using high-pressure gas-gathering process. [0004] In the high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D3/12F17D1/14
Inventor 胡涛杨光胡建国郑欣范君来刘明堃许茜王敏杨威胡凤才
Owner XIAN CHANGQING TECH ENG
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