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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology

Abstract

Journal of Petroleum Geology, Vol.4, No.3, pp. 287-298, 1982

©Copyright 2000 Scientific Press, Ltd.

RELATIONSHIP BETWEEN DIAGENESIS AND PORE FLUID CHEMISTRY IN NIGER DELTA OIL-BEARING SANDS

D. O. Lambert-Aikhionbare*

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

Abstract

The sandstones of the Niger delta oil reservoirs are predominantly quartz arenites, yet silica cementation in the form of quartz overgrowth is at a minimum. This apparent lack of cementation is attributed among other things to the low concentration of silica in formation water, which results in low bulk-volume reduction, little pressure-solution and consequently, under-compaction.

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