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OILFIELD BRINES OF METEORIC AND CONNATE ORIGIN IN THE EASTERN NIGER DELTA
Author(s) -
Amajor L. C.,
Gbadebo A. M.
Publication year - 1992
Publication title -
journal of petroleum geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 42
eISSN - 1747-5457
pISSN - 0141-6421
DOI - 10.1111/j.1747-5457.1992.tb01047.x
Subject(s) - niger delta , geology , salinity , meteoric water , geochemistry , total dissolved solids , delta , oceanography , environmental science , groundwater , geotechnical engineering , environmental engineering , aerospace engineering , engineering
A study of oilfield brines in the Afam, Imo River, Bodo‐West and Umuechem oilfields in the Eastern Niger Delta petroleum sub‐province of Nigeria was undertaken in an attempt to determine their genetic affinities. On the basis of their contents of bicarbonate, chloride and sulphate ions, and total dissolved solids, most of the formation waters from the Imo River oilfield are shown to be meteoric in origin, whereas those from Afam, Bodo‐West and Umuechem are connate waters. The relationship between salinity and total dissolved solids can be expressed by a simple linear equation. Formation‐water resistivity and total dissolved solids from these oilfields are parabolically related. The amount of total dissolved solids is also depth‐controlled, and increases with depth. This relationship is thought to be a function of post‐depositional processes.