Monitoring method and device for oil and gas stealing caused by oil and gas pipeline punching

Abstract

The invention provides a monitoring method and device for oil and gas stealing caused by oil and gas pipeline punching, and belongs to the field of petroleum gas pipeline theft prevention. The monitoring method comprises the following steps: dividing an oil and gas pipeline into a plurality of monitoring sections; monitoring a pipe-to-ground potential offset on each monitoring section, wherein the potential offset comprises a positive offset and a negative offset; if each monitoring section has the positive offset and the negative offset at the same time, determining the corresponding monitoring section as a suspected punching oil and gas stealing section according to the characteristics of the monitored pipe-to-ground potential offset condition; and checking all suspected punching oil and gas stealing sections so as to determine an actual punching oil and gas stealing section. According to the method, the position of punching oil stealing operation can be accurately found out, and the problem of less leakage detection is avoided.

Description

technical field [0001] The disclosure belongs to the field of oil and gas pipeline anti-theft, and in particular relates to a monitoring method and a monitoring device for drilling oil and gas pipelines to steal oil and gas. Background technique [0002] Oil and gas pipelines are an important part of petroleum gas transportation and are used to transport petroleum gas. [0003] Drilling oil and gas theft is one of the prominent security risks faced by domestic pipeline operators. According to statistics, external risk factors are the main cause of pipeline safety accidents publicly reported in China in the past 10 years, and accidents caused by human influence (oil and gas theft) account for 10%. The common methods of perforating and stealing oil and gas include welding, hoop, steel brazing and bonding. [0004] The risks of oil and gas theft by drilling holes to pipeline enterprises mainly include the following three aspects: (1) The oil and gas theft by drilling holes ha...

AI Technical Summary

Problems solved by technology

Stealing oil and gas molecules to carry out drilling and stealing oil and gas welding operations is often time-consuming, and the welding quality is low, oil and gas leakage accidents are prone to occur, leading to serious environmental protection incidents

(2) Drilling oil and gas theft incidents can lead to major direct economic losses

(3) The incident of oil and gas drilling and theft can cause the company to face huge pressure from public opinion and have a bad social impact

[0006] However, the pipeline leakage monitoring system has high real-time alarm and positioning accuracy for relatively large oil and gas leakage, but the sensitivity to small leakage needs to be improved, and there is a problem of under-detection and leakage detection.

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