Seismic and well log driven structural and petrophysical analysis of the Lower Goru Formation in the Lower Indus Basin, Pakistan

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• 作者：Muhammad Naeem ; Muhammad Kamran Jafri ; Sayed S. R. Moustafa…
• 关键词：structural analysis ; petrophysical evaluation ; well correlation ; Sinjhoro concession ; Lower Indus Basin
• 刊名：Geosciences Journal
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：20
• 期：1
• 页码：57-75
• 全文大小：2,549 KB
• 参考文献：Ahmad, N., Fink, P., Sturrock, S., Mahmood, T., and Ibrahim, M., 2012, Sequence stratigraphy as predictive tool in Lower Goru Fairway, Lower and Middle Indus Platform, Pakistan. American Association of Petroleum Geologists Search and Dicvovery Article #10404
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  Munir, K., Iqbal, M.A., Farid, A., and Shabih, S., 2011, Mapping the productive sands of Lower Goru Formation by using seismic stratigraphy and rock physical studies in Sawan area, southern Pakistan: a case study. Journal of Petroleum Exploration and Production Technology, 1, 33–42.CrossRef
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  Oil and Gas Development Company Limited, 2014, Sinjhoro (Gas/ Condensate Field), Online Available: http://​www.​ogdcl.​com/​ about-us/Fields.html#Sinjhoro [Accessed June 10, 2014].
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• 作者单位：Muhammad Naeem (1) (2)
  Muhammad Kamran Jafri (1) (3)
  Sayed S. R. Moustafa (1) (4)
  Nassir S. AL-Arifi (1)
  Shazia Asim (2) (5)
  Farhan Khan (1)
  Nisar Ahmed (1)
  
  1. Department of Geology and Geophysics, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
  2. Department of Earth Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
  3. Department of Geology, Faculty of Science, University of Karachi, Karachi, 75270, Pakistan
  4. National Research Institute of Astronomy and Geophysics (NRIAG), Cairo, 11421, Egypt
  5. Institute of Geophysics and Geomatics (IGG), China University of Geosciences (CUG), Wuhan, 430074, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geosciences
  
• 出版者：The Geological Society of Korea, co-published with Springer
• ISSN：1598-7477

文摘

The Sinjhoro concession is prolific gas-producing block situated on the eastern limb of the Lower Indus Basin in Pakistan. It contains several development and production (D & P) leases, which are producing gas from Cretaceous rocks. The present study aimed to evaluate the structural and petrophysical properties of the Lower Goru Formation using a 2D seismic and well-driven integrated study. A seismic driven time structure map of the Lower Goru Formation was generated, which depicted horst and graben structures oriented predominantly in a NNW-SSE direction. These normal faults are deep seated and potentially provide a vertical primary migration pathway to hydrocarbon flow. A prospective lead of 20 ms was identified in the northwestern portion of the structural map, which could be explored further. Besides this, a RMS amplitude map was generated within the target reservoir level to show the general sand body distribution within the reservoir. Our study revealed that the reservoir quality sands are deposited in the eastern portion of the study area. The identified lead is also located on a fair to good level of sand body which is producing from the well drilled to the south of the prospective area. Additionally, it is strongly recommended to conduct an infill seismic survey over and around the newly identified prospect in order to validate its existence and aerial outspreads. Well correlation, petrophysical data logs (PDLs) and cross-plot techniques were adopted to predict the petrophysical properties of the reservoir level. During the petrophysical study, two prospective zone were identified, with Zone-II showing more promising results for hydrocarbon presence than Zone-I. The present research has shown that integration of seismic attributes with petrophysical calculations can help to identify new prospective leads even in cases where there is less seismic data coverage. Keywords structural analysis petrophysical evaluation well correlation Sinjhoro concession Lower Indus Basin