Geochemical Features and Geologic Significances of Source Rocks in Nanpu Sag, Bohai Bay Basin
详细信息
- 责任者：Gang Wenzhe (College of Geosciences ; China University of Petroleum ; Beijing 102249 ; China) ; Wu Yue
- 刊名：Petroleum Geology & Experiment
- 出版年：2012
- 卷期：34(1)
- 关键词：烃源岩 ; source rocks ; 南堡凹陷 ; Nanpu Sag
- 页码：p.57-61,65
- 图表：7 illus., 1 table, 14 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
///Fine description and comparative study of the geochemical features of source rocks in the Nanpu Sag of the Bohai Bay Basin have been made according to multiple parameters.It has been concluded that effective source rocks in the 3rd member of the Shahejie Formation are regarded as excellent effective hydrocarbon source rocks thanks to big thickness and high organic abundance(2.5%～8%).They are mainly of Ⅱ1 and Ⅰ organic types,and are in mature and over mature stages.Effective source rocks in the 1st member of the Shahejie Formation are regarded as good ones since the organic abundance ranges from 1.2% to 2.3%,and the organic types are dominated by Ⅱ2 and Ⅲ.Effective source rocks in the 3rd member of the Dongying Formation are regarded as relatively good ones of mature stage since the organic abundance ranges from 0.2% to 2.6%,and the organic type is dominated by Ⅱ2.3 regions favorable for exploration in the Nanpu Sag have been pointed out.