3D Structural Interpretation and Petrophysical Evaluation of Reservoirs in the ‘M’ Field, Onshore Niger Delta, Nigeria.

Abstract

An integrated reflection seismic and well log data interpretations of reservoirs in the ‘M’ Field located in onshore Niger Delta were carried out to map the complex subsurface structures and characterize the reservoirs in order to predict the hydrocarbon potential of the field. The methodology includes delineation and assessment of rock properties of reservoirs from logs of five wells, faults and horizons mapping from 3D seismic data, time to depth conversion, generation of time and depth structural maps of identified reservoirs. Structural interpretation shows presence of five main faults (F1-F5) while petrophysical evaluation delineated two hydrocarbon bearing zones (reservoirs 1 and 2). The quality of the delineated reservoirs in the ''M-field'' Niger Delta is good as revealed by the various petrophysical parameters estimated. The reservoirs are also considerably thick to host hydrocarbon in commercial quantities. The exploratory wells are producible as shown by the values estimated for water saturation and hydrocarbon saturation. The time and depth structure maps shows that the identified faults are fault dependent and fault-assisted closures and are thus regarded as good hydrocarbon traps Keywords: Niger Delta, reservoir, hydrocarbon trap, structural map DOI: 10.7176/JNSR/14-12-05 Publication date: September 30 th 2023