METHOD FOR PRODUCTION OF NATURAL GAS FROM ADJACENT TO COMPRESSOR STATION SECTIONS OF MAIN GAS LINE BEFORE THEIR OUTPUT FOR REPAIR

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention relates to main gas pipeline facilities and can be used for generation of natural gas from adjacent to compressor station sections of main gas pipeline before their output for overhaul. According to the proposed technical solution, gas production is performed by using two shop compression circuits, each of which includes three gas transfer units, in the centrifugal compressor of which a full-head replaceable flow part is used, additionally, intermediate cooling of gas flow after third compression stage in centrifugal compressor is performed, gas pumping is performed by shop compression circuits, each of which includes three gas transfer units from one of three sections of main gas pipelines, containing disconnected and adjacent sections to the second compression unit, to maximum compression ratio of compressors of gas transfer units within the working area of gas-dynamic characteristics of centrifugal compressors.;EFFECT: obtaining a larger amount of marketable gas saved due to more efficient emptying of four sections of the main gas line in a four-string corridor.;1 cl, 1 dwg, 1 tbl