鄂尔多斯盆地合水地区长7致密油岩性岩相类型识别及其应用

发布时间：2018-01-12 22:17

本文关键词：鄂尔多斯盆地合水地区长7致密油岩性岩相类型识别及其应用　出处：《中国地质》2016年04期 　论文类型：期刊论文

【摘要】：利用岩心、薄片、常规测井、成像测井等资料结合物性分析等,对鄂尔多斯盆地合水地区长7致密油岩性岩相等特征进行了研究。长7致密油储层以砂质碎屑流、浊流和滑塌成因的砂岩为主,烃源岩以泥岩、油页岩为主,根据粒度参数进一步将长7致密油岩性岩相划分为砂质碎屑流细砂岩相、浊流细砂岩相、浊流粉砂岩相、滑塌岩相、半深湖—深湖泥岩相以及油页岩相6类。通过岩心刻度常规和成像测井,建立了不同岩性岩相的测井识别评价标准,并实现了各单井纵向上的岩性岩相的识别和划分。在此基础上,进一步探讨了不同岩性岩相与TOC含量和脆性指数的关系。最后结合试油气资料和油气解释结论,阐明岩性岩相对致密油储层物性和含油气性的定量控制。致密油岩性岩相的研究可为后期成岩相、孔隙结构以及优质储集体预测等奠定基础,为研究区长7致密油的综合评价和有利发育区带预测提供理论指导和技术支持。
[Abstract]:Using core, thin slice, conventional logging, imaging logging and other data combined with physical properties analysis. The lithofacies and lithofacies of Chang 7 tight oil in Heshui area of Ordos Basin are studied. The reservoir of Chang 7 tight oil is composed of sand clastic flow, turbidite and sloughing sandstone, and source rock is mudstone and oil shale. According to the granularity parameters, the lithofacies of Chang 7 dense oil are further divided into fine sand facies, fine sand facies, siltstone facies and sloughing lithofacies, which are composed of sand clastic flow fine sand facies, turbidite fine sand lithofacies and turbidite siltstone facies. There are 6 types of semi-deep lacustry-deep lake mudstone facies and oil shale facies. Through core calibration routine and imaging logging, the logging identification and evaluation criteria for different lithofacies are established. The recognition and division of lithologic lithofacies in each single well are realized. The relationship between different lithofacies and TOC content and brittleness index is further discussed. Finally, combined with oil and gas test data and hydrocarbon interpretation conclusion. The quantitative control of the physical properties and hydrocarbon bearing properties of the relatively dense oil reservoirs of lithologic rocks is expounded. The study of the lithofacies of dense oil can lay a foundation for the prediction of late diagenesis, pore structure and high quality reservoir. It provides theoretical guidance and technical support for the comprehensive evaluation and the prediction of favorable development zone of zakang 7 dense oil.
【作者单位】：中国石油大学(北京)地球科学学院;中国石油大学(北京)油气资源与探测国家重点实验室;中国石油大学(北京)非常规天然气研究院;
【基金】：国家十二五科技重大专项(2011ZX05020-008) 国家自然科学基金(41472115)联合资助~~
【分类号】：P618.13
【正文快照】： (1.College of Geosciences,China University of Petroleum,Beijing 102249,China;2.State Key Laboratory of Petroleum Resourcesand Prospecting,China University of Petroleum,Beijing 102249,China;3.Unconventional Natural Gas Institute,China Universityof Petrole

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