A method for optimizing flow control of surface pipelines in high-pressure gas wells

Abstract

This invention discloses a flow optimization control method for high-pressure gas well surface pipelines, comprising the following steps: Step S1, establishing a multi-stage throttling temperature and pressure calculation model for high-pressure / ultra-high-pressure gas well surface pipelines; Step S2, calculating the number of multi-stage throttling stages and corresponding diameters; Step S3, calculating the multi-stage throttling natural gas flow and adjusting the pressure differentials distributed across the diameters; Step S4, inputting the calculated parameters to each stage of the throttling valves for remote automatic control. This invention avoids damage to separation equipment and throttling valves caused by ultra-high pressure during high-pressure and ultra-high-pressure gas well testing operations, and performs multi-stage throttling valve linkage adjustment based on real-time measured data; simultaneously, it ensures sufficient pressure drop to guarantee the stable operation of the separator and throttling valves, while providing theoretical support for optimizing natural gas flow and increasing production.

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