Study Of Inflow Performance Relationship And Production Parameter Optimization Of Fractured Horizontal Well In Low Permeability Reservoir

Study on productivity of fractured horizontal well has attracted extensive attention in recent years.Comparatively speaking,little work has been done to study on Inflow Performance Relationship and artificial lift of fractured horizontal well in low permeability reservoir.What’s worse,the complexity of the research on flow characteristics of fractured horizontal well in low permeability reservoir would intensify the difficulties of study on Inflow Performance Relationship.In this paper,reservoir simulation method are used to simulate the production characteristics on the fractured horizontal wells in low permeability reservoirs.The impact of horizontal wells and fracture parameters to decline of fractured horizontal production and rise water cut.Analysis and comparison on water drive characteristic of five-spot water flooding pattern and seven-spot water flooding pattern has been conducted.According type of inflow performance corresponding to different stages of production,fractured horizontal well inflow performance equation solution gas drive,fractured horizontal well inflow performance equation with water and fracturing horizontal wells and gas-phase water inflow performance curve distribution have been analyzed.Base on previous study,low permeability reservoir fracturing and horizontal well inflow performance modeling methods is proposed.Fractured horizontal well inflow performance curve on different water has been determined.For a number of fracturing inflow performance curve,the scope of a reasonable bottom hole pressure in low permeability fractured horizontal wells in different stages of production is determined.Finally,the rod pump production parameters optimization software is programmed based on the low permeability reservoir fracturing and horizontal well rod pumping system optimization design method.Using software to design the rod pump production parameters for fractured horizontal wells in low permeability reservoir.Application results show that the amount of fluid production wells and pump efficiency have been greatly improved.