摘要
利用铸体薄片、扫描电镜、X-衍射、物性、压汞等分析化验资料,对阜北地区下侏罗统三工河组二段储层岩石学特征、物性及孔隙结构特征、成岩作用、成岩矿物、成岩环境、所处成岩阶段、成岩演化序列、成岩相等进行研究。结果表明,阜北地区三工河组二段储层砂岩现今已进入中成岩B期,主要发育压实压溶、胶结、溶蚀等成岩作用,压实作用和胶结作用是孔隙度降低的主要原因,溶蚀作用形成的次生孔隙在一定程度上改善了储层物性。根据成岩作用类型和强度、成岩矿物及其对储层物性的影响,划分出3种成岩相:中等压实弱胶结弱溶蚀相、中等压实中等胶结中等溶蚀相、中等压实强胶结中等溶蚀相,其中,中等压实弱胶结弱溶蚀相和中等压实中等胶结中等溶蚀相为有利成岩相带。
Based on the study of casting thin sections,scanning electron microscope analysis,X-ray diffraction,physical property analysis,and mercury intrusion porosimetry,the authors studied the diagenesis and diagenetic facies of the reservoir ofnd member of Lower Jurassic Sangonghe Formation in Fubei area.The reservoir has experienced compaction,pressure solution,cementation and corrosion,and is now in the stage B of middle diagenetic stage.The decrease of porosity is mainly caused by compaction and cementation.Secondary pores resulting from corrosion can improve the physical property of the reservoir to some extent.According to such factorsas diagenes is,diagenetic minerals and their effects on the reservoir,three types of diagenetic facies were recognized,namely facies with medium compaction,weak cementation and corrosion,facies with medium compaction,medium cementation and corrosion,facies with medium compaction,strong cementation and medium corrosion,among which the first two are the favorable diagenetic facies.
作者
徐文礼
刘冉
文华国
靳军
郑荣才
李云
于景维
XU Wenli;LIU Ran;WEN Huaguo;JIN Jun;ZHENG Rongcai;LI Yun;YU Jingwei(Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, Sichuan, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059,Sichuan, China;Research Institute of Experiment and Detection of PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China;Karamay Campus of China University of Petroleum, Karamay 834000, Xinjiang, China)
出处
《地质通报》
CAS
CSCD
北大核心
2017年第4期555-564,共10页
Geological Bulletin of China
基金
国家自然科学基金项目<准噶尔盆地乌尔禾地区二叠纪咸化湖盆热液喷流活动的比较沉积学研究>(批准号:4157021099)
关键词
成岩作用
成岩相
阜北地区
三工河组二段
diagenesis
diagenetic facies
Fubei area
2nd Member of Sangonghe Formation
