生物礁灰岩;
Reservoir of paleo-oil is mainly bioherm limestone. Bitumen mainly occurs in cavities and fractures, and also in matrix pores and biological coelomata.
古油藏的储集层均为生物礁滩灰岩,沥青的主要储集空间以洞、缝为主,其次为基质孔隙和生物体腔内。
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