海子滩位于武威盆地中部，太原组总厚度超过160 m，埋深在50～1000 m，厚度大，埋深适中，整套地层页岩极为发育。页岩储层的有机碳含量高，有机质类型以Ⅱ2型为主，成熟度2.35%，生气能力和吸附储集气体的能力较强。通过对页岩的矿物成分、渗透性、孔隙裂隙发育特征及压汞试验结果分析发现，该区岩石中石英等脆性矿物含量较高，小于0.1μm的微孔缝比较发育，有利于储层改造和形成诱导裂缝。综合分析认为研究区太原组页岩储层条件较好，建议进一步开展调查评价工作。%The Haizitan area is located in the middle of Wuwei Basin. Total thickness of the Taiyuan Formation is more than 160m, bur⁃ied depth 50~1 000 m, thus large thickness and moderate buried depth, and shale is very well developed in the whole strata set. Shale reservoir has high organic carbon content;organic matter is mainly type II-2, maturity 2.35%, with strong gas generation capacity and gas reservoir adsorption capacity. Analysis based on shale mineral components, permeability, pore, fissure development features and mercury intrusion tested results have considered that the content of brittle minerals including quartz is rather high, micropores less than 0.1μm and fissures well developed, thus in favor of reservoir reformation and induced fracture forming. The comprehensive analysis considered that study area Taiyuan Formation reservoir condition is good, further investigation and assessment works suggested.
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