- 责任者：Lu Jincai (Xi’an Center of Geological Survey ; China Geological Survey ; Xi’an 710054 ; China) ; Chen Gaochao
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(6)
- 关键词：油气化探 ; oil and gas geochemical prospecting ; 烃类 ; hydrocarbons ; 内蒙古 ; Inner Mongolia
- 页码：p.850-858
- 图表：15 illus., 2 tables, 16 refs.
- 分类号：1900
- 出版序号：1487
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
Based on the geological condition analysis of surface geochemical prospecting for oil and gas in Ejin Banner and its vicinities, the authors systematically analyzed such indexes as concentrations of methane and heavy hydrocarbon, dry coefficients and methane carbon isotope. Combined with an analysis of typical oil and gas reservoirs and geochemical exploration anomalies in different geological backgrounds, it is considered that there are two sets of petroleum systems with different evolution degrees of hydrocarbon source rocks, and that the oil and gas geochemical exploration anomalies are mainly hydrocarbon geochemical anomalies of highly mature-overmature hydrocarbon source rocks or mixed-source oil and gas reservoirs（or compound oil and gas reservoirs）.