Geo-seismic model for petroleum plays an assessment of the Zamzama area, Southern Indus Basin, Pakistan
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ORIGINAL PAPER-EXPLORATION GEOLOGY
Geo‑seismic model for petroleum plays an assessment of the Zamzama area, Southern Indus Basin, Pakistan Muhammad Akram Qureshi1,2 · Shahid Ghazi1 · Muhammad Riaz3,4 · Shakeel Ahmad1,2 Received: 15 September 2019 / Accepted: 9 November 2020 © The Author(s) 2020
Abstract Seismic as well as structural techniques were exploited to elucidate the subsurface structure of the Zamzama area that directly led to petroleum system. Zamzama gas field is located in the Kirthar Foredeep, southern Indus Basin, Pakistan. The current research is based on data scrutinized systematically through eight seismic lines (796-JH-01, 02, 03, 07, 10, GHPK-98A-32, 34 and 40) and three wells (Zamzama-02, 03 and 05) drilled in the Zamzama field. Seismic interpretation reveals that Tertiary and Cretaceous sequence is deformed by transpressive tectonics, and a reverse fault is located from 400 to 3400 ms deep on the vertical seismic section. The hanging wall moves up along the fault plane under the action of eastward directed stress as a result an extensive North–South oriented and eastward verging thrusted anticline is formed. Stratigraphically, area encompasses well-developed Mesozoic–Cenozoic sequence. The Late Cretaceous Pab Formation is well-known primary hydrocarbon reservoir capped by the shale of the Paleocene Ranikot Formation that acts as a regional seal rock. The Jurassic and Cretaceous shales of the Sember and Goru formations are substantiated as main source rocks. The execution and portrayal of seismic and subsurface geological data provide the clues that area contains appropriate petroleum play potential. Present study suggests a worthwhile regional geo-seismic model that might be significant for future exploration in the Kirther Foredeep and adjacent areas. Keywords Seismic interpretation · Geo-seismic model · Petroleum system · Zamzama gas field
Introduction Seismic data, its integration with wells and geological data are consistent tool for subsurface geological depiction (Moghal et al. 2007; Ghazi et al. 2014; Riaz et al. 2018, 2019; Abid et al. 2019, 2020). An integrated approach is crucial for petroleum exploration and subsurface interpretations. It assists in tracing the subsurface geological structures and establishing reliable correlations. A precise identification of the subsurface geological perspectives and * Muhammad Riaz [email protected] 1
Institute of Geology, University of the Punjab, Lahore 54590, Pakistan
2
Oil and Gas Development Company Limited (OGDCL), Islamabad, Pakistan
3
Centre for Geographical Information System, University of the Punjab, Lahore 54590, Pakistan
4
Department of Earth Sciences, Abbottabad University of Science and Technology, Havelian 22500, Pakistan
structures is vital for hydrocarbon probe, and it delivers a perception about the framework and structural styles of a basin. Furthermore, interplay between shortening and shear has imperative implications for location of traps and their preservation. These seismic and surface data along w
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