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巴喀油田中侏罗统砂岩产层，基质岩块平均渗透率为０３×１０－３μｍ２，发育有四种裂缝类型。地面调查和岩芯统计分析等表明：该油田砂岩裂缝与灰岩裂缝相比，具有规模小、充填剧烈、低渗透等特点；裂缝分布主要受岩性、层厚、地应力等影响；产层中裂缝是主要渗透通道，储集类型为裂缝孔隙型；基质岩块形态取决于裂缝类型及组合，尺寸取决于裂缝频率。最后提出了储层裂缝分布网络的概念模型。
In the Middle Jurassic sandstone pay zone of Baka Oilfield, the average permeability of matrix rocks is 03 × 10-3μm2, and there are four types of fractures. The ground investigation and core statistical analysis show that the sandstone fractures in this oilfield are characterized by small scale, violent filling and low permeability compared with limestone fractures. The distribution of fractures is mainly affected by lithology, layer thickness and in-situ stress. The middle cracks are the main infiltration channels, and the reservoir type is the fracture pore type. The shape of the matrix rock mass depends on the type and combination of fractures, and the size depends on the fracture frequency. Finally, a conceptual model of reservoir fracture distribution network is proposed.