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华北任丘油田震旦亚界雾迷山组碳酸盐岩储集层在扫描电镜下微孔隙及微裂隙有以下几种:原生微孔隙包括晶间微孔隙和藻内微孔隙。次生孔隙(溶孔)包括伴随有充填物的溶孔以及不伴随有充填物的溶孔。裂缝孔隙包括成岩缝、构造缝、溶解缝。此地层孔隙裂缝发育且相互连通,储集性能良好,并形成高产油流。
Carboniferous reservoirs in the Sinian sub-region Wumishan Formation in Renqiu Oilfield in North China have the following types of micro-pores and micro-fractures under the scanning electron microscope: The primary micro-pores include intergranular micro-pores and intra-algal micro-pores. The secondary pores (dissolved pores) include a dissolved pore accompanied by a filler and a dissolved pore not associated with a filler. Fracture pores include diagenetic joints, structural joints, and dissolution joints. The formation of pore fissures developed and interconnected, good reservoir performance, and the formation of high-yield oil flow.