Evaluation on Hydrocarbon Source Rocks in Different Environments and Characteristics of Hydrocarbon Generation and Expulsion in Dongpu Depression

详细信息   

• 责任者：Chen Jie (Research Institute of Exploration and Development ; Zhongyuan Oilfield Company ; SINOPEC ; Puyang 457001 ; China) ; Lu Kun
• 刊名：Fault-Block Oil and Gas Fields
• 出版年：2012
• 卷期：19(1)
• 关键词：烃源岩 ; source rocks ; 东濮凹陷 ; Dongpu Sag
• 页码：p.35-38
• 图表：3 illus., 1 table, 11 refs.
• 分类号：1003
• issnNo：ISSN1005-8907
• isbnNo：CN41-1219/TE

摘要

 In different environments,the potential of hydrocarbon source rocks has a significant difference in Dongpu Depression.By studying the organic geochemistry of source rocks and the characteristics of hydrocarbon generation and expulsion in different environments,it is shown that the source rocks in the northern salt water environment are good to excellent,the source rocks in northern brackish environment are medium to good and the source rocks in southern fresh water-brackish water environment are poor to medium.Source rocks in different environments have twice hydrocarbon generations and expulsions.The first phase is Ro <0.7%,in which the soluble organic matters directly convert into immature or low mature oil.The second phase is Ro> 0.7%,in which the thermal degradation of kerogen mainly generates mature oil.The evaluation on source rocks in different environments and the characteristics study of hydrocarbon generation and expulsion can provide an instructive role for the next step exploration in Dongpu Depression.