川东北元坝地区侏罗系陆相页岩天然裂缝发育特征及其对页岩油气富集和保存的影响OA北大核心CSTPCD
Characteristics of Natural Fractures and Their Influence on Oil and Gas Enrichment and Preservation of the Jurassic Continental Shale in the Yuanba Area,Northeastern Sichuan Basin
川东北元坝地区陆相页岩中天然裂缝发育,是影响页岩油气富集和保存的关键因素.本文依据岩心、镜下薄片和扫描电镜等资料研究该区侏罗系大安寨段和千佛崖组页岩层系天然裂缝的发育分布特征,探讨裂缝对页岩油气富集和保存的影响.结果表明,侏罗系页岩中主要发育构造裂缝、层理缝、穿层水力破裂缝和收缩缝,其中构造裂缝包括穿层剪切缝、顺层剪切缝和层内张开缝,层理缝是页岩中最为发育的天然裂缝,线密度介于66～357条/m之间,平均为188条/m.层理缝和收缩缝既是页岩油气…查看全部>>
Development of natural fractures is one of key factors affecting the enrichment and preservation of shale oil and gas with in the continental shale at the Yuanba area,northeast Sichuan Basin.This study investi-gated the distribution of the natural fractures in the Jurassic Da'anzhai shale and Qianfoya shale based on the core data,thin section,and scanning electron microscopic images.We further discussed the influence of frac-tures on the shale oil and gas en…查看全部>>
蒋代琴;李平平;邹华耀
中国石油大学(北京)地球科学学院,北京 102249中国石油大学(北京)地球科学学院,北京 102249中国石油大学(北京)地球科学学院,北京 102249
地质学
天然裂缝页岩油气富集和保存侏罗系元坝地区川东北
natural fractureshale oil and gasenrichment and preservationJurassicYuanba areanorthes-tern Sichuan Basin
《现代地质》 2024 (2)
362-372,11
中国科学院战略性先导科技专项(A类)"四川盆地重点地区深层油气运移机理与富集规律"(XDA14010306).
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