Well Correlation and Petrophysical Analysis, a Case Study of “Rickie” Field Onshore Niger Delta

Abstract

-------------------------------------------------------ABSTRACT--------------------------------------------------A suite of geophysical wire-line logs from an oil field inNiger delta have been examined and analyzed. The logs include gamma ray(used for the identification of lithology), resistivity/conductivity(used for the delineation hydrocarbon bearing reservoirs) and neutron and formation density ) tools (used to map out gas bearing zones). Lithostratigraphic correlation sections of four wells (R1, R2, R3 and R4) depict that the subsurface stratigraphy is that of sand – shale interbedding. Three prominenthydrocarbon bearing reservoirs (L,P andS), located at depths of 9,650ft (2,943m), 10,650ft (3,248m) and 12298ft (3935m)were identified and mapped. Petrophysical parameters of the reservoirs which included porosity, hydrocarbon saturation, volume of shale, formation resistivityand formation factor were computed. The reservoirs have averaged porosity of 30.2%, water saturation 19.7% and hydrocarbon saturation of 80.3%.These research findings will contribute immensely in oil field development programmes. --------------------------------------------------------------------------------------------------------------------------------------Date of Submission: 14 December 2013 Date of Acceptance: 15 January 2014 ---------------------------------------------------------------------------------------------------------------------------------------