Geochemical Characteristics of Shallow Gas in Honggang Region, Songliao Basin
详细信息
- 责任者：Jing Chengjie (Faculty of Earth Sciences ; China University of Geosciences ; Wuhan 430074 ; China) ; Niu Shizhong
- 刊名：Petroleum Geology & Experiment
- 出版年：2012
- 卷期：34(1)
- 关键词：浅层气 ; shallow gas ; 松辽平原 ; Songliao Plain
- 页码：p.53-56
- 图表：3 illus., 1 table, 13 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
The chemical and stable carbon isotopic compositions of 7 shallow gas samples from the Mingshui Formation and 13 shallow gas samples from the Nenjiang Formation in Honggang region have been tested.Results have indicated that the average values of CH4 content,C2+ content,dry coefficient and δ13C1 of the Mingshui Formation are 92.74%,1.77%,0.981 and -56.7‰,respectively,while those of the Nenjiang Formation are 90.38%,5.57%,0.942 and -52.1‰,respectively.The shallow gas from the Mingshui Formation is biogas and that from the Nenjiang Formation is bio-thermocatalytic transitional gas.Both of them belong to low-mature oil-type gas.
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