Rock Physics Modelling and Reservoir Analysis of Qazian Structure, Upper Indus Basin (P-1187) (MFN 5790)

Abstract

This dissertation holds the study of interpretation of 2D seismic data of the concerned seismic lines (Qzn-04, Qzn-05, Qzn-06, Qzn-09 and Gna-12) of Qazian area in Northern Indus Basin, Pakistan. Qazian is located in Tehsil Gujjar Khan, which is one of the seven Tehsils of Rawalpindi District Punjab, Pakistan. The data issued included five seismic lines, base map, navigation files and well tops of the QazianX-01. Logs issued consisted of GR log, resistivity log, SP log and sonic log. Four reflectors were marked (red, white, cyan and yellow) which represent Chorgali, Sakesar, Tobra/Dandot and Khewra respectively. Reflectors were marked with the help from well top data after converting the time to depth with the help of average velocity. Afterwards petrophysical analysis was done for determination of quantities like average porosity, effective porosity, saturation of hydrocarbons etc. Rock physics confirmed the presence of fluid in the concerned area while, reserve estimation was done to calculate the original oil in place. Pop-up anticlinal structures were observed from time and depth surfaces of all the four marked formations. The reflectors marked were of early Eocene, early Permian and Precambrian age respectively.