Structural Interpretation and Reservoir Analysis of Ratana Area, Upper Indus Basin, Pakistan (P-1188) (MFN 5938)

Abstract

Ratana is a town of Pindigheb Tehsil, Punjab, Pakistan. It is located in the north western part of the Potwar basin, about 100 km south-west of Islamabad. Ratana is a large, thrust bounded, salt cored and east-west trending pop-up structure. The area is concentrated on with the assistance of the 2-D seismic, petrophysical analysis and volumetric estimation. For this purpose, five seismic lines have been obtained from the LMKR by the permission of DGPC. The data acquired consists of four dip lines and one strike line. The well log data was also obtained for the petrophysical analysis. In the seismic data interpretation, the horizons were marked and faults were identified on the Formation tops which are named as Chorgali, Sakesar and Patala Formation. Time, velocity and depth contour maps were generated which delineated the subsurface structures of the study area. Well log examination was performed out on Ratana-03 well for the distinguishing proof of potential hydrocarbons bearing zone. Potrophyscal analysis was performed for determination of volume of Shale, volume of clean, average porosity and effective porosity. The saturation of hydrocarbons and water was observed and on the premise of this investigation probable zone of interest was distinguished in the Patala Formation. By the aid of seismic interpretation, the reflector was identified as Chorgali Formation, Sakesar Formation and Patala Formation it was then cross checked with the petrophysical analysis and the same result was concluded.