title: A novel molecular index for secondary oil migration distance.
abstract: Determining oil migration distances from source rocks to reservoirs can greatly help in the search for new petroleum accumulations. Concentrations and ratios of polar organic compounds are known to change due to preferential sorption of these compounds in migrating oils onto immobile mineral surfaces. However, these compounds cannot be directly used as proxies for oil migration distances because of the influence of source variability. Here we show that for each source facies, the ratio of the concentration of a select polar organic compound to its initial concentration at a reference point is independent of source variability and correlates solely with migration distance from source rock to reservoir. Case studies serve to demonstrate that this new index provides a valid solution for determining source-reservoir distance and could lead to many applications in fundamental and applied petroleum geoscience studies.
authors: Key Laboratory of Petroleum Resource, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beitucheng W. Road, Chaoyang District, Beijing 100029, China.
authors: Liuping
authors: L
authors: Zhang
authors: Maowen
authors: M
authors: Li
authors: Yang
authors: Y
authors: Wang
authors: Qing-Zhu
authors: QZ
authors: Yin
authors: Wenzheng
authors: W
authors: Zhang
references: Anal Chem. 1997 Aug 1;69(15):3128-9
references: 21639335