Hydrocarbon Source Rock Potential of the Late Paleocene Patala Formation, Kohat Basin, Pakistan
Authors
- Tausif Javed 1, 2
- Syed Mamoon Siyar * 1, 3, 4
-
Syed Muhammad Wasim Sajjad
1, 5, 4
- Fayaz Ali 3
- Fawad Raziq 1
- Saeed Ullah Shah 1
-
Nasar Khan
1
- Izaz Ali 1
Abstract
The Late Paleocene Patala Formation shales exposed at Tarkhobi Nala, Kohat Basin, Pakistan were geochemically studied in detail for hydrocarbon evaluation. A total of 09 shale samples of the studied formation were analyzed in G & R Labs, Oil & Gas Development Company Limited (OGDCL), Islamabad, Pakistan for TOC and Rock-Eval pyrolysis. The TOC results were low ranging from 0.36 wt. % to 1.25 wt. % indicating poor to fair petroleum potential except a sample falling in the good source rock category. The generating potential values (< 2 mg HC/ g. rock) also show poor ability for hydrocarbon production. The different cross plots between Rock-Eval pyrolysis parameters (HI vs OI; HI vs Tmax; S2 vs TOC) were used to describe the types of kerogen and thermal maturity of the evaluated samples. All these plots confirmed the presence of type IV kerogen which has no capability to generate hydrocarbon except minor gas upon thermal maturation. The thermal maturity of the organic matter was assessed by Tmax (444 °C to 459 °C) which shows that the studied formation is falling in the oil window but due to the presence of type IV (oxidized & reworked) organic matter not able to generate commercial hydrocarbons.
Keywords
References
Coward MP, Rex DC, Khan MA, Broughton RD, Luff & Pudsey CJ (1986) Collision tectonics in the NW Himalayas. Geological Society, London, Special Publications 19(1), 203-219
Davis WM (1930) Origin of limestone caverns. Geological Society of America 41(3), 475-628.
Eames, Frank Evelyn (1952) A contribution to the study of the Eocene in western Pakistan and western India; Part A. The geology of standard sections in the western Punjab and in the Kohat District. Quarterly Journal of the Geological Society of London 107, 159-171.
Fazeelat T, Jalees MI, Bianchi TS (2010) Source rock potential of Eocene, Paleocene and Jurassic deposits in the subsurface of the Potwar Basin, northern Pakistan. Journal of Petroleum Geology 33(1), 87-96.
Hakimi MH, Abdullah WH (2013) Organic geochemical characteristics and oil generating potential of the Upper Jurassic Safer shale sediments in the Marib-Shabowah Basin, western Yemen. Organic geochemistry 54, 115-124.
Hakimi MH, Abdullah WH (2014) Source rock characteristics and hydrocarbon generation modeling of upper Cretaceous Mukalla Formation in the Jiza-Qamar Basin, eastern Yemen. Marine and Petroleum Geology 51, 100-116.
Hakimi MH, Abdullah WH, Shalaby MR (2010) Source rock characterization and oil generating potential of the Jurassic Madbi Formation, onshore East Shabowah oilfields, Republic of Yemen. Organic Geochemistry 41(5), 513-521.
Hunt AP, Lucas SG, Lockley MG (1995) Paleozoic track sites of the western United States. New Mexico Museum of Natural History and Science Bulletin 6, 213-217.
Hunt JB, Hill PG (1996) An inter-laboratory comparison of the electron probe microanalysis of glass geochemistry. Quaternary International 34, 229-241.
Hunt JM (1972) Distribution of Carbon in Crust of Earth: GEOLOGICAL NOTES. AAPG bulletin 56(11), 2273-2277.
Hunt MJ (1979) Petroleum geochemistry and geology. WH Freeman and company.
Johnson DA, Ledbetter M, Burckle LH (1977) Vema Channel paleo-oceanography: Pleistocene dissolution cycles and episodic bottom water flow. Developments in Sedimentology 23, 1-33.
Kadri IB (1995) Petroleum Geology of Pakistan. Pakistan Petroleum Limited, Graphic Publishers, Karachi, Pakistan.
Khan MR, Ali Mubarik (1997) Tectonics of Hazara and adjoining areas based on gravity data, northwest Himalaya Pakistan. Geological Bulletin University of Peshawar 30, 273-283.
Makeen YM, Abdullah WH, Hakimi MH, Mustapha KA (2015) Source rock characteristics of the Lower Cretaceous Abu Gabra Formation in the Muglad Basin, Sudan, and its relevance to oil generation studies. Marine and Petroleum Geology 59, 505-516.
Peter KE, Moldowan J M (1993) The biomarker guide: interpreting molecular fossils in petroleum and ancient sediments. Englewood Cliffs, New Jersey.
Peters KE (1986) Guidelines for evaluating petroleum source rock using programmed pyrolysis. AAPG bulletin 70(3), 318-329.
Pinfold ES (1918) Notes on structure and stratigraphy in the north-west Punjab. Geological Survey of India Records 49(3), 137-160.
Schnitzer M (1978) Humic substances: chemistry and reactions. Developments in soil science 8, 1-64.
Seeber (1981) Seismicity and continental subduction in the Himalayan arc. Zagros Hindu Kush Himalaya Geodynamic Evolution 215-242.
Tahirkheli RK (1979) Geology of Kohistan and adjoining Eurasian and Indo-Pakistan continents, Pakistan. Geological Bulletin University of Peshawar 11(1), 1-30.
Tissot BP (1984) Recent advances in petroleum geochemistry applied to hydrocarbon exploration. AAPG Bulletin 68(5), 545-563.
Tissot BP, Welte DH (1984) From kerogen to petroleum. In Petroleum Formation and Occurrence. Springer Berlin Heidelberg 160-198.
Wang, Guoyong LIU, Xiongqi PANG, Changrong LI, Zhuoya WU (2020) Diagenetic evolution and formation mechanisms of middle to deep clastic reservoirs in the Nanpu sag, Bohai Bay Basin, East China. Petroleum Exploration and Development 47(2), 343-356.
Wynne AB (1873) Notes from the progress of report on the geology of parts of upper Punjab. Geological Survey of India Records 6(3), 59-64.