Discussion on technical countermeasure of improving development effect of low permeability reservoir

Low PERMEABILITY RESERVOIR IS AN IMPORTANT MATERIAL FOUNDATION FOR STABLE PRODUCTION IN OLD AREAS, BUT DUE TO THE limitations OF reservoir physical properties, exploitation methods and other factors, the late production effect is poor, therefore, from development approach, technical measures to improve oil recovery in low permeability are discussed. Based on analysis of factors influencing double geological characteristics reservoir, viewpoint seepage mechanics, this paper systematically classifies five indexes, such as main pipe radius, flow percentage, starting pressure gradient, clay mineral content crude viscosity. The five-element combination evaluation method used optimize point basis, favorable gas accumulation areas found. According DEVELOPMENT status reasonable injection-production network well type demonstrated break bottleneck conventional water injection benefit reservoir.