A Study Of Productivity And Fracturing Effect Of Hydraulic Fracturing Well At ShaximiaoFormation Gas Reservoir In Xinchang Field

According to the Geologic characteristic and Actual production of Shangximiao reservoir in Xinchang gas field, This paper is mainly research on evaluation of transient productivity for quickly degression at production and long-time unstable flow in gas frac-well, meanwhile, having research on frac evaluation for fracture and production. The research results as follows:(1)Base on the theory of unstable effluent seepage, and the analysis on unstable effluent seepage in Shaximiao reservoir , We got the analytical approach for evaluation of transient productivity, Which provide the base for reasonable proratioh production in Shaximiao reservoir.(2)Base on the research for fracture performance , frac-well effect, reservoir exploitation effect and economic evaluation, We got the technique system of evaluation for fracture effect in Shaximiao reservoir.(1) Establishing the fracture altitude and azim evaluation approach base on microearthquake and thermologging; Establishing the fracture morphology and dimensions evaluation system base on simulating the frac real-time data curve and nonstabilized well test.(2) Forming the frac-well production analytical approach base on well testing evaluation , G(1,N) model and production degression analysis, And evaluation approach for reservoir fracturing effect base on demonstrated reserves, production system and gas recovery, Which is very useful for fracture evaluation.