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Method for Determining Leakage Location of Oil and Gas Gathering Pipeline

A technology for oil and gas gathering and transportation and pipeline leakage, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc. It can solve the problems of affecting work efficiency, increasing production costs, and inaccurate positioning of measurement and acquisition, so as to improve accuracy sexual effect

Active Publication Date: 2020-09-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing method of using negative pressure wave or infrasonic wave technology to determine the leak location of oil and gas gathering and transportation pipelines takes a long time to determine the leak location, and under the construction conditions in the field, the pressure signal or infrasonic wave signal is easily interfered by the outside world, resulting in The positioning is inaccurate, affecting work efficiency and increasing production costs

Method used

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  • Method for Determining Leakage Location of Oil and Gas Gathering Pipeline

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Embodiment 1

[0039] A method for determining the leakage position of an oil and gas gathering and transportation pipeline provided by the embodiment of the present invention takes an indoor test pipeline as an example, wherein the length L of the pipeline is 362.3 m, the pipe material is 304 stainless steel, the transmission medium is water, and the medium temperature is normal temperature ( 20°C), the method flow chart is as follows figure 1 As shown, the method includes:

[0040] Step 101: Obtain the negative pressure wave signal of the first station and the negative pressure wave signal of the last station of the oil and gas gathering and transportation pipeline.

[0041] Before this step, the first pressure sensor is arranged at the first station of the oil and gas gathering and transportation pipeline, and the second pressure sensor is arranged at the last station of the oil and gas gathering and transportation pipeline.

[0042] If there is a leak somewhere in the oil and gas gather...

Embodiment 2

[0071] A method for determining the leakage location of an oil and gas gathering and transportation pipeline provided in the embodiment of the present invention also takes an indoor test pipeline as an example, wherein the length L of the pipeline is 362.3m, the pipe material is 304 stainless steel, the transmission medium is water, and the medium temperature is normal temperature (20°C), the method flow chart is as follows figure 2 As shown, the method includes:

[0072] Step 101: Obtain the negative pressure wave signal of the first station and the negative pressure wave signal of the last station of the oil and gas gathering and transportation pipeline.

[0073] Before this step, the first pressure sensor is set at the first station of the oil and gas gathering and transportation pipeline, and the second pressure sensor is set at the end station of the oil and gas gathering and transportation pipeline.

[0074] If there is a leak somewhere in the oil and gas gathering and...

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Abstract

The invention discloses a method for determining a leakage position of an oil gas gathering and transferring pipeline, and belongs to the technical field of engineering automation of an oil gas field.According to the method for determining the leakage position of the oil gas gathering and transferring pipeline, negative-pressure wave signals of a first station and a last station and potential distribution curves of a plurality of cathode protection potentials on the oil gas gathering and transferring pipeline are obtained; a first leakage range and a second leakage range are determined; and athird leakage range is determined according to the first leakage range and the second leakage range, so that a constructor can determine the leakage position of the oil gas gathering and transferringpipeline directly according to the third leakage range. The negative pressure wave technology and the cathode protection potential technology are combined, so that accurate determination of the leakage position of the oil gas gathering and transferring pipeline is realized, the positioning accuracy is improved, and the leakage position of the oil gas gathering and transferring pipeline can be found conveniently and timely.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field engineering automation, and particularly relates to a method for determining the leakage position of oil and gas gathering and transportation pipelines. Background technique [0002] As the lifeline of oilfield production, the safe operation of gathering and transportation pipelines is very important. If the pipeline operates abnormally, such as perforation, it will cause a series of adverse consequences such as loss of crude oil (natural gas) and environmental pollution. Lines, production shutdowns, emergency rescues, and leak repairs require a lot of manpower and material resources and a lot of time. Therefore, it is of great practical significance to conduct real-time monitoring of oil and gas gathering and transportation pipelines to quickly and accurately determine the leakage location, so that emergencies can be dealt with in a timely manner and losses are minimized. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/06
Inventor 任桂山徐国安孙凯陈学梅
Owner PETROCHINA CO LTD