Optimized rock physics model implementation to characterize the heterogeneous B-interval reservoir facies in the petro-elastic domain, Mubarak Block, Lower Indus Basin, Pakistan.

Authors

  • Muyyassar Hussain Department of Earth Sciences, Quaid-I-Azam University, Islamabad, Pakistan
  • Mona Lisa Department of Earth Sciences, Quaid-I-Azam University, Islamabad, Pakistan
  • Zahid Ullah Khan Department of Earth Sciences Quaid-I-Azam University Islamabad Pakistan.
  • Syed Adnan Ahmed Department of Earth Sciences Quaid-I-Azam University Islamabad Pakistan.

DOI:

https://doi.org/10.48129/kjs.17493

Abstract

Rock physics abridges geological and reservoir parameters to quantify the heterogeneous hydrocarbon reservoir facies in the petro-elastic domain. The widely distributed Lower Goru sands across the Lower Indus Basin are proven hydrocarbon reservoirs and exhibit heterogeneity due to their complex depositional environment. Diagenetic detrital quartz overgrowth cementation, sand, shale intercalation, and various fluids add more challenges to characterize facies in the petro-elastic domain. For precise petro-elastic relationship establishment, an extended cemented sandstone rock physics model for B-Interval sands of the Lower Goru Formation was developed. It produced conclusive elastic properties by optimizing the density log and synthesizing the missing shear sonic log. The accuracy of the selected model was authenticated by statistical measures, i.e., good prediction quality, high correlation coefficient, along with less normalized root mean square error for modeled Vp, Vs and density. This comprehensive approach adheres to the interrelationship between pores, minerals, cementation effects and fluids to address reservoir heterogeneity, facies classification and tight sand. Furthermore, these parameters are translated in a ubiquitous way in the petro-elastic domain, illuminating the sweet spots within the reservoir.

Author Biographies

Muyyassar Hussain, Department of Earth Sciences, Quaid-I-Azam University, Islamabad, Pakistan

Muyyassar Hussain employed as Principle Geoscientist with LMKR, Pakistan. He has experience of more than 12 years in the petroleum sector and successfully delivered many national and international R&D, QI and unconventional studies. He is visiting faculty member in a couple of universities. He taught various G & G subjects and supervise many students at BS and MS levels. He is currently working on Rock physics modeling and inversion techniques.

Mona Lisa, Department of Earth Sciences, Quaid-I-Azam University, Islamabad, Pakistan

Prof. Dr. Mona Lisa is currently working as a Professor in the Department of Earth Sciences, Quaid-I-Azam University (QAU), Islamabad. She won DAAD Sandwich Fellowship and AvH Fellowship of Germany. She is the first PhD in Earthquake Seismology in Pakistan. Won Pakistan Academy of Sciences (PAS) Gold Medal in Earth Sciences. Regular Associate of International Centre of Theoretical Physics (ICTP), Trieste, Italy. Collaboration with Oregon State University (OSU), USA; University Of Arkansas, USA; Imperial College London, UK; GFZ, Potsdam Germany; ICTP, Italy; IIEES, Tehran, Iran and many other national and international institutes. Published more than 50 research publications and won funding from PSF, HEC and PAS. Served as a Head of Department in COMSATS, Islamabad and as a Chairperson, Department of Earth Sciences, QAU, Islamabad.

Zahid Ullah Khan, Department of Earth Sciences Quaid-I-Azam University Islamabad Pakistan.

Zahid Ullah Khan is a Ph.D. scholar at Quaid-I-Azam University, Islamabad, and had done his M.Phil. and M.Sc. from a similar institute. He remained visiting faculty member in the Department of Earth Sciences and taught various G&G subjects. He is employed in the LMKR, Pakistan, and working as Sr. Geoscientist. He remained part of the teams that engaged in national and international projects related to R&D and QI.

Syed Adnan Ahmed, Department of Earth Sciences Quaid-I-Azam University Islamabad Pakistan.

Syed Adnan Ahmad has been working as Sr. Geoscientist with LMKR for 8 years. His responsibilities include Data validation i.e. wells and seismic for quality check on the commercial software, software algorithms QC, and client-related petroleum workflows. He has done MS in Geophysics from Bahria University, Islamabad, and is currently a Ph.D. candidate in the Earth Sciences, Quaid-I-Azam, University, Islamabad. He remained visiting faculty member in a similar university and taught many G&G subjects. 

Published

17-10-2022

Issue

Section

Earth & Environment