Formation Evaluation and Pore Pressure Prediction of Jabo Field, Southern Indus Basin, Pakistan

Abstract

The present study pertains to the modeling of hydrocarbon productive zones along with estimation of physical properties and pore pressure predictions by using well logs data of Jabo Field located in Southern Indus Basin Pakistan. This study has been carried out using well log data of Jabo-01 and Jabo-05 provided by the Directorate General of Pakistan concession. Literature shows the study area had abnormal pressure conditions encountered in the wells that were drilled in the past. Well log used to conduct pore pressure studies consists of Sonic, density and GR logs. Jabo Field had experienced high pressures as well as low pressures at different intervals. The pore pressure results confirm high pressure conditions in Jabo- 01 well whereas, Jabo-05 well has comparably normal pore pressures compared with the hydrostatic pressure gradient of the study area. These results can be used to estimate the overall pressure conditions in the study area to define pre-drill pressures and adjustment of mud weights accordingly.