2D Seismic Interpretation and Well Log Analysis of Missakaswal Area, Upper Indus Basin, Pakistan. | [Bahria University Research Journal of Earth Sciences • 2016]

Author(s):

1. Urooj Shakir: Department of Earth and Environmental Science, Bahria University, Islamabad, Pakistan

2. Muyyassar Hussain: LMK Resources, Islamabad, Pakistan

3. Rida Azhar: Department of Earth and Environmental Science, Bahria University, Islamabad, Pakistan

4. Anum Zafar: Department of Earth and Environmental Science, Bahria University, Islamabad, Pakistan

5. Snodia Asghar: Department of Earth and Environmental Science, Bahria University, Islamabad, Pakistan

6. Muhammad Raiees Amjad: Department of Earth and Environmental Science, Bahria University, Islamabad, Pakistan

Abstract:

Missakaswal area is located ten kilometers from Gujar Khan, Rawalpindi district of Punjab. Geographically the study area lies between 33° 11` 06" and 33° 11` 18.24" North and from 73° 20` 42" to 73° 21` 00" East. Stratigraphically, it lies in the Upper Indus which is characterized by large numbers of thrust and normal faults producing asymmetrical structures (anticlines/ synclines). The paper highlights the 2D structural interpretation and well log integration in order to delineate the subsurface structure and hydrocarbon potential. Two way time structure and depth contour maps have been prepared using surfer software. Time to depth conversion is done using the available stacking velocities. The depth structure map shows high relief anticlinal structure in the subsurface bounded to west and east by reverse faults. According to the petroleum geology, source rock in the study area is Patala Formation of Paleocene age; Chorgali Formation and Sakesar Limestone of Eocene age are acting as reservoir rocks while Murree Formation of Miocene age is acting as a seal. The petrophysical analysis is done to confirm the potential hydrocarbons bearing zone of the well Missakaswal-02. The total thickness of Chorgali Formation encountered in the well is 48 meters, but log data is only available of the starting 25 meters. The lower package of Chorgali Formation is still in production so well log data of this package is not available and as a result, log interpretation has not been carried out at complete package. Log analysis of 8 meters show average volume of shale 34%, average effective porosity 7% with average saturation of water 60%. This makes the Chorgali Formation a potential zone.

Page(s): 1-6

DOI: DOI not available

Published: Journal: Bahria University Research Journal of Earth Sciences, Volume: 1, Issue: 1, Year: 2016

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