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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology


Journal of Petroleum Geology, Vol.4, No.1, pp. 103-107, 1981

┬ęCopyright 2000 Scientific Press, Ltd.


J. Ferguson* and A. C. Ibe*

*Imperial College of Science and Technology, Department of Geology, Royal School of Mines, Prince Consort Road, London SW7 2BP.

The excellent porosity and permeability characteristics of oolitic carbonates have been used to explain their notably superior production of hydrocarbons, when compared with most other reservoir rocks. However, we have found that Recent ooid sands contain light hydrocarbons which we believe to be authigenic. The significance of these hydrocarbons is not the fact of their occurrence, but in the ratio of methane to the other hydrocarbons present (ethane, propane, etc.). To our knowledge, no similar discovery has been reported. This paper seeks to account for the formation of these hydrocarbons, and to relate the process to an overall scheme of petroleum genesis. In addition to providing a new insight into the timing, depth and nature of light hydrocarbon generation, the results present the possibility of the role of oolites as source rock.

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