大庆头台地区扶余油层无效缝对开发效果的影响

The impact of invalid fractures on development effect in Toutai area of Daqing

从储层无效缝的概念入手,简述了储层无效缝的形成机理,深入研究了储层无效缝对开发效果的影响,特别是对储层的储油能力和产油能力的影响。不同的孔参关系类型:微缝—正常孔渗关系类型所反映储层的渗流能力最强,储油能力、产油能力最好;微缝—次生矿物充填型孔渗关系反映储层储油能力好,渗流能力中等,产油能力次之;正常的孔渗关系类型反映储层渗流能力、储油能力最差,产油能力最低。

The formation mechanism of invalid fractures is briefly introduced in this article from the perspective of the concept of invalid fractures in reservoirs, and further analysis about the impact of invalid fractures on the development effect has been done, especially the impact on oil-storing and oil-producing ability of a reservoir. Different porosity/permeability relations include： microfractures-normal porosity/permeability relation, presenting strongest seeping ability and best oil accumulating and bearing ability; microfractures-secondary mineral filled type, presenting good oil accumulating ability, medium seeping ability and ordinary oil bearing ability; normal porosity/permeability relation type, presenting worst seeping and oil accumulating ability and poor oil bearing ability.