Production Optimization of Natural Gas Field in the Surma Basin

Abstract

Due to pressure depletion, the subject gas field is struggling to sustain its plateau production rate. It is essential to re-evaluate the field and forecast its output. The purpose of the study was to investigate ways to enhance its production rate and overall recovery. Various options were investigated, including re-perforation of an existing producing well, and reviving a shut in well using sand screen. Six different cases were considered, each with four different production scenarios. The methodology involved material balance, production data analysis, modelling individual wells, and tying up all wells into a network. Industry grade software were used at different stages of the study. The Gas Initially in Place (GIIP) was estimated at 1.23 trillion Cubic Feet (TCF). The highest Recovery Factor for this field is about 77.5%, corresponding to the Case-5 Scenario (d).