Using fluid inclusion to redefine gas accumulation stages of Xujiahe Formation in Hexingchang area
Online published: 2011-10-20
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.
LIN Senhu , ZOU Caineng , YUAN Xuanjun , YANG Zhi . Using fluid inclusion to redefine gas accumulation stages of Xujiahe Formation in Hexingchang area[J]. Lithologic Reservoirs, 2011 , 23(5) : 38 -42 . DOI: 10.3969/j.issn.1673-8926.2011.05.008
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