Analysis of fluid production and wellbore flow characteristics of deep shale gas
Fracturing and transformation of deep shale gas reservoirs are difficult and have complex fluid production characteristics.Currently,there is insufficient research on the fluid production and backflow characteristics under different blocks and transformation methods,which affects development efficiency.This article delves into the characteristics of fluid production and wellbore flow in deep shale gas wells.Through tracking and analyzing the fluid production and wellbore flow,the research results show that the changes in gas well fluid production can be divided into five stages:rapid increase,rapid decrease,slow decrease,stable water production,and measure drainage.The wellbore flow characteristics can be divided into three types:straight line,curved line,and full wellbore unstable.The full cycle wellbore flow pressure gradient shows a double"U"shape change,thereby clarifying the timing of measure process intervention and providing technical support for the fine management and development of deep shale gas.
deep shale gasfluid production characteristicsbackflow characteristicswellbore flow pattern
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