A pig positioning system and method

Abstract

The invention discloses a pipeline cleaner positioning system and method, and belongs to the field of oil gas pipelines. The pipeline cleaner positioning system comprises a first pressure transmitter,a second pressure transmitter, a first signal collector, a second signal collector, a signal processor and an electric source, wherein the first pressure transmitter is arranged at the upstream end of a target pipeline; the second pressure transmitter is arranged at the downstream end of the target pipeline; the first signal collector is electrically connected with the first pressure transmitter;the second signal collector is electrically connected with the second pressure transmitter; the signal processor is connected with the first signal collector and the second signal collector; the electric source is used for supplying electricity for the first pressure transmitter, the second pressure transmitter, the first signal collector, the second signal collector and the signal processor; andan upstream pressure signal and a downstream pressure signal are obtained from the first signal collector and the second signal collector by the signal processor, and are respectively treated into anupstream pressure value and a downstream pressure value, the upstream pressure value and the downstream pressure value are treated, and if a pre-set mutation value exists in the upstream pressure value and the downstream pressure value, positioning on a pipeline cleaner is performed by the signal processor. The positioning method of the pipeline cleaner positioning system disclosed by the invention is high-efficiency, accurate and simple, and monitoring the running state of the pipeline cleaner in a real-time manner is convenient.

Description

technical field [0001] The invention relates to the field of oil and gas pipelines, in particular to a pig positioning system and method. Background technique [0002] A pipe pig is a tool used to clean or inspect oil and gas pipelines. The pig uses oil, gas and other transport media in oil and natural gas pipelines to push it forward to remove wax deposits, impurities, water and other substances in the pipeline, or to detect the operating status of the pipeline. However, in the process of using the pig to clean or inspect the pipeline, if the pig is blocked, it will affect the normal transportation of oil and gas in the pipeline, and in severe cases, it will endanger the safety of the entire pipeline. Therefore, it is necessary to locate the stuck pig in time, and take measures to release the stuck pig to ensure the normal transportation of oil and gas in the pipeline. Moreover, in order to retrieve the pig in time at a later stage, it is also necessary to be able to dete...

AI Technical Summary

Problems solved by technology

[0005] The method provided by the prior art cannot quickly and accurately determine the position of the pig in the pipeline

When the pig is stuck, it cannot efficiently release the pig and reduce the operating efficiency of the pipeline

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