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Characteristics of Fluid Inclusions and Their Constraints on Timing of Hydrocarbon Filling in the Yacheng Area of Qiongdongnan Basin,South China
Author(s): JIA Yuanqin, HU Peiqing, ZHANG Mingjie, ZHANG Tongwei, CHEN Kena, CONG Yazuo
Pages: 189-
196
Year: 2012
Issue:
1
Journal: Acta Sedimentologica Sinica
Keyword: fluid inclusion; times of hydrocarbon charging and migration; reservoir; Qiongdongnan basin;
Abstract: 储层流体包裹体研究是油气充注期次分析的重要手段。对琼东南盆地崖城地区下第三系崖城组和陵水组砂岩储层5口钻井岩芯样品进行包裹体镜下显微观察、荧光分析和伴生盐水包裹体均一温度测量,表明该区下第三系主要发生过两期油气充注:第一期充注油气主要发淡黄色荧光,以液态烃包裹体和气液两相烃包裹体为主,伴生盐水包裹体的均一温度主要分布在130~160℃,根据区域埋藏热演化史推断油气充注时间为晚中新世—早上新世。第二期充注油气主要发淡蓝色荧光,以气态烃包裹体、气液两相烃包裹体和气液固三相烃包裹体为主,伴生盐水溶液包裹体的均一温度范围为160~190℃,充注时间应为第四纪。
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