Integrity Research Journals

ISSN: 2636-6002
Model: Open Access/Peer Reviewed
DOI: 10.31248/GJEES
Start Year: 2016

Petrophysical parameters estimation and reservoir characterisation based on well log data in the Joya Mair Oil Field, Minwal X-01 Well, Potwar Sub-Basin and Upper Indus Basin of Pakistan   |   Article Number: C227D0741   |   Vol.3 (5) - December 2018

Received Date: 22 August 2018   |   Accepted Date: 11 October 2018  |   Published Date: 31 December 2018

Authors:  Mubashir Mehmood* , Muhammad Yaseen , Ikram-ud-din , Muhammad Jehangir Khan , Tanveer Ullah and Anwarulhaq

Keywords: reservoir, evaluation, Minwal, Pay zone, petrophysical analysis, Potwar basin, porosity, saturation

The aim of this study is to assess the reservoir potential of the Eocene age Chorgali and Sakesar formations encountered in Minwal X-01 Well Potwar Sub-Basin.The current study is concerned with the reservoir potential evaluation using petrophysical approach of Minwal X-01 located in Potwar basin. Minwal X-01 is selected for research, where the prevailing assessment involves identifying, marking, analysing and interpreting the reservoir zones from well logs and computational analysis through different formulas. Several well logs were used comprising sonic log, gamma ray log, density log, neutron log, and resistivity logs. The petrophysical parameters such as the shale volume (Vsh), total porosity (PHT), effective porosity (PHE), water saturation (Sw), hydrocarbon saturation (Sh), and pay zone were assessed from wireline logs. The best possible reservoirs in the study area are Chorgali and Sakesar formations in Minwal X-01. These reservoirs have good net pay zones thicknesses (20-52 feet). Based on well log data, these reservoirs are classified as excellent reservoirs owing to their high effective porosity and hydrocarbon saturation.

Asquith, G. B., Krygowski, D. (2004). Basic Well Log Analysis: AAPG Methods in Exploration 16, P, 31-35.
Darling, T., (2005), Well logging and formation evaluation, Gulf Professional Publishing, USA. Pp 5-6.
Fatmi, A. N. (1973), Lithostratigraphic units of the Kohat-Potwar Province, Indus Basin, Pakistan. Ibid, Rec, 21(2), 9p.
Gansser, A. (1981). The geodynamic history of the Himalaya. Zagros Hindu Kush Himalaya Geodynamic Evolution, 3, 111-121.
Kadri, I. B. (1995). Petroleum Geology of Pakistan, Published by Pakistan Petroleum Limited, Ferozsons (pvt) limited.
Khan, M. A., Ahmed, R., Raza, H. A., and Kemal, A. (1986). Geology of petroleum in Kohat-Potwar Depression, Pakistan: American Association of Petroleum Geologists Bulletin, 70(4), 396-414.
Mehmood, W., Adil, N., Jadoon, Y. K. (2015). Evaluation of Petrophysical properties for reservoir characterization of Eocene age in Meyal field, Potwar basin – Pakistan: Sci.Int. (Lahore), 27(5).
Rider, M., H. (2002). The Geological Interpretation of Well Logs. Second Edition (Revised) Chapter 1, Pp. 7-8.
Rider, M. H. (1996). The Geological Interpretation of Well Logs, Second Edition, Gulf Publishing Company, Houston. 280p.
Riva, J. P.Jr. (1983). World petroleum resources and reserves. Boulder, Colorado, westview press. 355.
Searle, M. P., Cooper, D. J. W., Rex, A. J., & Colchen, M. (1988). Collision tectonics of the Ladakh-Zanskar Himalaya. Phil. Trans. R. Soc. Lond. A, 326(1589), 117-150.
Schlumberger (1972). Schlumberger Log interpretation charts, Houston, TX.
Schlumberger, (1967). Well Evaluation Conference, Middle East
Selley, R. C. (2000). Applied Sedimentology, Academia press USA, p 58.
Shami, B., & Baig, M. (2002). In Geomodeling for enhancement of hydrocarbon potential of Joya Mair Field (Potwar) Pakistan, PAPG-SPE Annual Technical Conference, Islamabad. Pp. 124-145.
Zahid, M., Khan, A., Rashid, U. M., Saboor, A., Ahmad, S. (2014), Structural interpretation of Joya Mair oil field, south Potwar, Upper Indus Basin, Pakistan, using, 2D seismic data and petrophysical analysis. Journal of Himalayan Earth Science, 47(1), 73-86.