陆相泥页岩储层岩石物理性质及含气性影响因素

发布时间：2018-01-12 12:23

本文关键词：陆相泥页岩储层岩石物理性质及含气性影响因素　出处：《科学技术与工程》2017年05期 　论文类型：期刊论文

【摘要】：川西须五段地层发育大套陆相泥页岩夹砂岩层,泥页岩层含气性较好,具有巨大的页岩气勘探开发潜力;但目前研究程度尚浅。基于该现状,结合大量测试及测井资料,对须五段页岩的物理性质及含气性影响因素进行了综合研究。研究结果表明,须五段陆相泥页岩属富黏土硅质泥页岩相,与美国Fort及Barnett地区潜质页岩具有类似的岩石物理性质。影响须五段页岩含气性的影响因素包括:有机质含量、矿物组成及含量、物性、脆性、气体赋存状态及超压。须五段泥页岩的主要储集空间为有机质孔、矿物晶间孔、溶蚀孔及微裂缝。页岩气含气量与有效孔隙度及气相渗透率均具有较好的正相关性。当页岩中黏土含量35%时,含气性及脆性均较高;随着黏土含量的增加,页岩含气性与脆性间无明显相关性。含气量较高的页岩层具有较高的含气饱和度,须五段陆相泥页岩吸附气含量约占60%,以吸附气为主,表明吸附态是陆相页岩储层中一种重要的气体赋存方式。
[Abstract]:The five section shall be developed in continental strata of shale sand rock, mud shale gas is good, has the great potential of shale gas exploration and development; but the research level is not high. Based on the present situation, combined with a large number of testing and logging data, factors on the physical properties of the member five of the Xujiahe gas shale and influence carry on comprehensive research. The results show that five continental shale belongs to rich clay siliceous shale facies, with rock physical properties similar with the Fort and Barnett areas of potential shale. Including the effects of gas containing five to influence factors of shale: organic matter content, composition and content of mineral properties, brittleness and the gas occurrence state and overpressure. The main reservoir should be five shale reservoir space for organic mineral pore, intergranular pore, dissolution pore and micro cracks. Shale gas content and effective porosity and gas permeability have positive correlation. When the content of clay shale in 35%, gas content and brittleness were higher; with the increase of clay content, shale gas has no obvious correlation with brittle shale gas content. The higher with higher gas saturation, five terrestrial mud shale accounted for about 60% of the adsorbed gas. Results showed that the adsorption state is an important gas occurrence of continental shale reservoir.

【作者单位】：中国地质大学能源学院;
【基金】：国家自然科学基金(41372139,41072098) 国家科技重大专项课题(2016ZX05046-003-001)资助
【分类号】：P618.13
【正文快照】： 引用格式:谢非,丁文龙,尹帅.陆相泥页岩储层岩石物理性质及含气性影响因素[J].科学技术与工程,2017,17(5):20—28Xie Fei,Ding Wenlong,Yin Shuai.Petrophysical properties of continen-tal shale reservoir and the influence factors of its gas contents[J].Sci-ence Tech

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