高邮凹陷北斜坡中东部地区阜三段储层综合评价

Comprehensive Reservoir Evaluation on Ef_3 in the Mid-east Area of Northern Slope of Gaoyou Depression

高邮凹陷北斜坡中东部地区阜三段储层为典型的低渗、特低渗储层。针对低渗透储层不同构造部位成因不同、成岩演化历史复杂、辉绿岩侵入等问题,提出了以构造、沉积、成岩、流体、物性、辉绿岩为主的"六元论"综合评价新标准,利用灰色关联的分析方法,以小层为单元进行了储层综合评价及分类。利用该方法对不同层位低渗透储层中的相对高渗带进行了预测,并指出了有利目标区。

Ef3 reservoir in the mid-east of northern slope of Gaoyou Depression was typical low permeability and extra-low permeability reservoir. In allusion to the problem of different genesis in different structural locations, complex evolution history of diagenesis and invasion of diabase in low permeability reservoir, a new evaluating criterion was proposed for 6 element evaluation, including structure, deposition, diagenesis, fluid, physical property and diabase. The reservoir is classified and evaluated by using grey correlating method and using subzone as unit. The method is used to predict a relative high permeable zones in the low permeability reservoirs and beneficial target zones are pointed out.