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

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