Application of Precision Pressure Control Production Technology for Deep Shale Gas Wells in Western Chongqing
Pressure control production technology can effectively delay the closure of fracturing cracks,slowing down the rate of production decline in shale gas wells and increasing the estimated ultimate recovery(EUR)of individual wells.A pilot test of electronically controlled choke fine pressure control production was carried out in a shale gas well in the region of Sichuan and Chongqing.Field tests results have shown that the fine pressure control production technology using a"one-stage fixed choke+two-stage electronically controlled adjustable choke"surface process can effectively reduce the rate of pressure decay and achieve pressure-controlled production.When gas production is carried out through casing and tubing are produced,pressure relief will result in a decrease in production capacity,thereby reducing the EUR.However,the impact of pressure relief production through tubing is smaller,indicating that pressure control is more significant when the pressure is higher,and tubing production can achieve pressure control within the wellbore,which is more beneficial for maintaining well productivity.It is conclued that pressure control production technology for deep shale gas wells is beneficial for realizing the production po-tential of the well,effectively extending the stable production period of the well,and increasing the EUR of individual wells.
deep shale gaspressure control productionelectronic control chokeestimated ultimate recovery(EUR)
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维普
