Method for judging dense pigging of moisture gathering and transportation pipeline

A pipeline and pigging technology, which is applied in the direction of complex mathematical operations, etc., can solve the problems of complex calculation of pipeline liquid volume, no judgment of encrypted pigging, difficult operation, etc.
CN110196958AActive Publication Date: 2019-09-03PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2019-09-03

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Abstract

The invention belongs to the technical field of gathering and transportation pipeline pigging, and particularly relates to a method for judging dense pigging of a moisture gathering and transportationpipeline. The method comprises the following four steps of calculating the saturated water content of the natural gas at a beginning end and an ending end of the pipeline; obtaining a pipeline effusion quantity value; obtaining the percentage of the pipeline effusion quantity and the pipe capacity volume; and judging whether the pipeline is encrypted or not. According to the method, the accumulated liquid condition of the moisture gathering and transportation pipeline can be simply and quickly predicted, and whether the pipeline needs to be subjected to the encrypted pipeline cleaning or notis quickly and conveniently judged according to the percentage of the accumulated liquid amount of the pipeline and the volume of the pipeline.
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Description

technical field

[0001] The invention belongs to the technical field of pipe pigging of gathering and transportation pipelines, and in particular relates to a method for judging the intensive pigging of wet gas gathering and transportation pipelines. Background technique

[0002] The operation specification of natural gas pipeline stipulates that a reasonable pigging cycle should be determined according to the gas condition of the pipeline, the transmission efficiency of the pipeline and the transmission pressure difference. There is no specific parameter limit value for the pigging cycle in the specification. In practical application, in order to facilitate management and operation, generally, wet gas gathering and transportation pipelines must be pigged twice a year. For pipelines with a lot of liquid accumulation, intensive pigging must be implemented. The method is: sort out the pigging history of the pipeline. When the maximum liquid volume cleared from the pipeline is ...

Claims

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