Geochemical Characteristics and Hydrocarbon Resource Potential of Dalong Formation Permian, Northeast Sichuan
详细信息
- 责任者：Chen Ruiyin (Research Institute of Petroleum Exploration & Development ; PetroChina ; Beijing 100083 ; China) ; Zhu Guangyou
- 刊名：Natural Gas Geoscience
- 出版年：2013
- 卷期：24(1)
- 关键词：烃源岩 ; source rocks ; 四川盆地 ; Sichuan Basin
- 页码：p.99-107
- 图表：illus., 1 table, 32 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
The data of rock element and organic geochemistry confirm that a set of organic rich siliceous marine formation is distributed at the top of Permian in the northeast of Sichuan basin,whose thickness is 30 meters,and the sedimentary facies belongs to platform depression.The formation had type Ⅱ organic matter feature and the mean TOC and potential hydrocarbon ratio is 4.08% and 12.55mg/g,respectively,and the RO is 1.2%-2.0%.Thus,this formation can be cognized as excellent source sediment formation with oil yields(17.6-22.3)×104t/km2 and gas yields(1.65-1.98)×108m3/km2.Much more exploration attention should be paid to it.