The effective source rocks in the north Cambay Basin, India

被引:34
作者
Banerjee, A [1 ]
Jha, M [1 ]
Mittal, AK [1 ]
Thomas, NJ [1 ]
Misra, KN [1 ]
机构
[1] Oil & Nat Gas Corp, Keshava Deva Malviya Inst Petr Explorat, Geochem Div, Dehra Dun, Uttar Pradesh, India
关键词
Cambay Basin; effective source rocks; oil source correlation;
D O I
10.1016/S0264-8172(00)00049-0
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Source rock screening reveals five laterally extending potential sources (PS) in the Paleogene. The PSs are SR5 and SR6 in dominantly marine early Eocene to late Paleocene Cambay Shale formation, and SR7, SR8/9, and SR11/12 in dominantly freshwater early Paleocene Olpad formation. Only 3 PSs, SR11/12, SR8/9, and SR7 have attained vitrinite reflectance of 0.75% at 45, 7, and 2 mybp, respectively. Chromatographic and isotope data of oils and PS samples suggest that mainly the Olpad source rocks: SR7 and SR8/9 contributed to the discovered oils. The Cambay Shale source rocks, SR5 and SR6, contrary to the prevalent view, possibly have no significant contribution towards the accumulated oils. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1111 / 1129
页数:19
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