应用流体包裹体厘定合兴场地区须家河组天然气成藏期次
网络出版日期: 2011-10-20
基金资助
中国石化西南油气分公司科研项目(编号:GT-146-0924)“孝泉—丰谷构造须家河组成藏机理差异性研究”资助
Using fluid inclusion to redefine gas accumulation stages of Xujiahe Formation in Hexingchang area
Online published: 2011-10-20
通过对合兴场地区须家河组四段和二段中230 个包裹体样品的分析,根据油气包裹体及含烃盐 水包裹体特征,结合地层埋藏史,确定了气藏的成藏年代。气藏油气充注过程为:须四段(3 385.4 m)均一 化温度的主峰分别为77~98 ℃ 和118~120 ℃,对应成藏期为中侏罗世中晚期和晚侏罗世中期,前者为 主要成藏期;须二段(4 612.77 m,4 562.7 m)均一化温度的主峰分别为95~106.1 ℃,119.8~127.1 ℃ 和 134.5~140.1 ℃,对应的主成藏期为晚三叠世末期到早侏罗世早期和中侏罗世晚期。
林森虎 , 邹才能 , 袁选俊 , 杨智 . 应用流体包裹体厘定合兴场地区须家河组天然气成藏期次[J]. 岩性油气藏, 2011 , 23(5) : 38 -42 . DOI: 10.3969/j.issn.1673-8926.2011.05.008
Based on the analysis of 230 inclusion samples of the second and fourth members of Xujiahe Formation in Hexingchang area, the characteristics of hydrocarbon inclusion and hydrocarbon-bearing salt water inclusion combining with burial history are used to define the gas reservoir formation time. The process of hydrocarbon accumu-lation in the study area is as following:The two main peak homogenization temperatures of the fourth member of Xujiahe Formation ranges from 77 ℃ to 98 ℃ and from 118 ℃ to 120 ℃ respectively, and the corresponding hydrocarbon accumu-lation stages are middle-late stage of Middle Jurassic and middle stage of Late Jurassic, with the former as the main accumulation stage; The main peak homogenization temperatures of the second member of Xujiahe Formation ranges from 95 ℃ to 106.1 ℃, from 119.8 ℃ to 127.1 ℃ and from 134.5℃ to 140.1 ℃ respectively, and the corresponding hydrocarbon accumulation stages are from the late stage of Late Triassic to the early stage of Early Jurassic and late stage ofMiddle Jurassic.
Key words: shale; tight oil development; Bakken; Eagle Ford; Barnett; implication; the U. S.
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