Petrophysical Analysis of Well Manazalai-01 Upper Indus Basin, Pakistan

Abstract

The objective of this research is to determine the hydrocarbon potential of well Manzalai- 01. The well Manzalai-01 is located in the western part of the Upper Indus Basin. Tectonically, the respective well is located in the Kohat sub Basin near Kurram fault. The tectonic regime of this area is compressional where both strike slip and thrust faults are present. For petro-physical analysis, log data for well Manzalai-01 was acquired from LMKR approved by DGPC, Islamabad. In well Manzalai-01, two zones of interests have been identified on the basis of logs tends. One prospect zone has been marked in Lockhart Limestone and one zone of interest has been marked in the Lumshiwal Formation. The various petro-physical parameters were calculated for Lockhart Formation and Lumshiwal Formation. Petro-physical Analysis suggests that average volume of shale Average Percentage is 13% for prospect zone of Lockhart Formation and 14.33% for prospect zone of Lumshiwal Formation. Average porosity for prospect zone of Lockhart Formation is 2.71% and for prospect zone of Lumshiwal Formation is 2.38% Average effective porosity for prospect zone of Lockhart Formation is 2.35% and for prospect zone of Lumshiwal Formation 2.06%, the average water saturation is 5.2% and 52.1%, the average hydrocarbon potential is 94.7% and 47.83% for Lockhart and Lumshiwal formations respectively. The results showed that in well Manzalai-01, both clastic and carbonate reservoirs are present. On the basis of low percentage of volume of shale and the high percentage of the hydrocarbons, the results computed that both formations are acting as major reservoirs in well Manzalai-01