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东营凹陷胜坨地区沙四上亚段浊积扇致密砂砾岩储层孔隙演化
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  • 英文篇名:Porosity evolution of turbidite fan tight glutenite reservoir in Es_4~s of Shengtuo Area,Dongying Depression
  • 作者:邢恩浩 ; 田景春 ; 林小兵 ; 肖玮绮 ; 陈威振 ; 邢浩婷
  • 英文作者:XING Enhao;TIAN Jingchun;LIN Xiaobing;XIAO Weiqi;CHEN Weizhen;XING Haot-ing;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology;Institute of Sedimentary Geology,Chengdu University of Technology;Research Institute of Exploration and Development,PetroChina Qinghai Oilfield Company;
  • 关键词:致密砂砾岩储层 ; 浊积扇 ; 成岩作用 ; 孔隙演化 ; 沙四上亚段 ; 东营凹陷
  • 英文关键词:tight glutenite reservoir;;turbidite fan;;diagenesis;;porosity evolution;;Es4s;;Dongying Depression
  • 中文刊名:东北石油大学学报
  • 英文刊名:Journal of Northeast Petroleum University
  • 机构:成都理工大学油气藏地质及开发工程国家重点实验室;成都理工大学沉积地质研究院;中国石油青海油田分公司勘探开发研究院;
  • 出版日期:2019-08-15
  • 出版单位:东北石油大学学报
  • 年:2019
  • 期:04
  • 基金:国家科技重大专项(2016X05007-004-002);; 中国石油化工股份有限公司科技攻关项目(30200018-15-ZC0613-0075);; 成都理工大学沉积地质学科研创新团队项目(KYTD201703)
  • 语种:中文;
  • 页:6-7+41-51+89
  • 页数:14
  • CN:23-1582/TE
  • ISSN:2095-4107
  • 分类号:P618.13
摘要
利用钻井岩心、铸体薄片、扫描电镜、物性分析、包裹体测温等资料,结合盆地埋藏演化史,研究东营凹陷胜坨地区沙四上亚段浊积扇致密砂砾岩储层成岩作用及孔隙度演化过程。结果表明:研究区沙四上亚段浊积扇致密砂砾岩储层现今孔隙度为8.75%,发育压实作用、胶结作用、溶蚀作用及两期油气充注;典型成岩—油气充注序列表现为早期绿泥石胶结—早期油气充注—早期溶蚀作用—石英次生加大/自生石英—压实作用—黏土胶结—方解石胶结—白云石胶结—晚期油气充注—石英溶蚀—晚期溶蚀作用—晚期黄铁矿胶结,储层成岩阶段达到中成岩B期;恢复储层原始孔隙度为34.53%,压实作用减孔率达到72%,各期胶结作用持续降低孔隙度,溶蚀作用调整和保存孔隙,浊积扇砂砾岩储层经历早期成藏—致密—边成藏边致密的过程。该研究结果可为东营凹陷致密储层的研究提供参考。
        The diagenesis and porosity evolution of turbidite fan tight glutenite reservoir in Shengtuo Area of Dongying Depression were studied by drilling core,casting thin section,scanning electron microscope,physical property analysis,inclusion temperature measurement and other test data,combined with burial evolution history of the basin.The results show that the porosity of the turbidite fan tight glutenite reservoir in the Es4s of the study area is 8.75%,and there are compaction,cementation,dissolution and two stages of oil and gas filling.Typical diagenesis-hydrocarbon charging sequence is shown as early-stage chlorite cementation,hydrocarbon charging stage early phase,early-stage dissolution,quartz overgrowths/authigenic quartz,compaction,clay cementation,calcite cementation,dolomite cementation,hydrocarbon charging stage later period,quartz dissolution,late dissolution,late pyrite cementation.And the reservoir diagenesis stage has reached middle diagenesis stage B.The primary porosity of the reservoir is 34.53%,the porosity reduced rate is 72%,and the degree of development is gradually decreased,the porosity is continuously reduced by cementation at each stages,the porosity is adjusted and preserved by dissolution.The turbidite fan glutenite reservoir undergoes the process of early-stage accumulation,compaction-accumulation while compaction.The research results can provide reference for the study of tight reservoirs in Dongying Depression.
引文
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