Presented by: Zeeshan Ahmad
Presented To :Prof Anwar Qureshi
UAJK
LITHOSTRATIGRAPY OF UPPER INDUS BASIN AND HC PRODUCTION
The Kohat-Potwar Basin also called Upper Indus Basin is situated in northern Pakistan and located between lat. 32° and 34° N and, long. 70° and 74° E.
Depositional Settings of the Kohat-Potwar Basin
Sedimentation in the Kohat-Potwar area began in the Precambrian and lasted until the Pleistocene.
Three major unconformities in the area are Ordovician to Carboniferous , Mesozoic to late Permian and Eocene to Oligocene.
Salt Range Formation which is overlain metamorphic rocks reported as the oldest sedimentary rocks in the Kohat-Potwar Basin
Cambrian rocks comprised sandstone, siltstone, shale and dolomite represented by Khewra, Kussak, Jutana, and Baghanwala Formations.
After Cambrian sequence there is unconformity and the type is disconformity.
Cease of deposition was up to Permian. Permian sequence of Kohat-Potwar Basin includes :
Tobra Formation ,Dandot Formation, Warcha sandstone, Sardhai Formation, Amb Fm, Wargal L.st, Chhidru Fm.
Unconformity exist after Permian and then Triassic sequence starts.
Triassic sequence : Mianwali Fm, Chak Jabbi L.st, Tredian Fm, Kingriali Fm.
Unconformity and then Jurassic sequence was deposited.
Jurassic sequence : Datta Formation, Shinawri Formation, Samana Suk Formation.
Unconformity and then Cretaceous sequence was deposited.
Cretaceous Sequence : Chichali Formation, Lumshiwal Formation, Kawagarh Formation.
Unconformity and then Paleocene sequence.
Paleocene sequence : Hangu Formation, Lockhart L.st, Patala Formation.
Unconformity and then Eocene sequence. Eocene sequence : Mrgala Hill Limestone, Chorgali
Formation, Kuldana Formation, Nummal Formation, Sakaser Limestone, Margalla L.st, Panoba shales, Bahadur Khel salt , Chorgali Fm, Shekhan Fm, Jatta Gypsum, Kuldana Fm, Kohat Fm.
Oligocene is missing. Miocene sequence include Rawalpindi group. Late Miocene-Pliocene Siwalik Group is present.
Hydrocarbons In Kohat-Potwar Basin
Producing wells: Well name No Of Wells Location Gas Oil Company
Manzalai 12 wells. Karak 22MMSCFD 500 bbl./day MOL
Makori 02 Karak 20 " 6500 MOL
Nashpa 04 Karak 12 19000 OGDCL
Chanda 03 Kohat 10 6000 OGDCL
Mela 03 Kohat 02 350 OGDCL
Dhakni 10 Attock 12 5000 OGDCL
Jand 01 Attock 02 800 OGDCL
Well name No Of Wells Location Gas Oil Company
Toot 08 Attock --- 200 OGDCL
Rajian 06 Chakwal 02 2000 OGDCL
Kal 02 Chakwal 02 800 OGDCL
Mesakaswal 02 Chakwal 02 500 OGDCL
Femkasar 03 Chakwal 02 600 OGDCL
Chaknaurag 04 Chakwal 02 1000 OGDCL
ADHI 12 Chakwal 16 1200 PPL
Sadkal 04 Chakwal 02 750 OGDCL
Bhalsydan 02 Chakwal 01 200 OGDCL
Dry & a banded wells
Well name Location Company Latamber karak PPL Khwaj Kohat OGDCL Nakband " " Sahib gul “ " Shekhan " " Sumari " "
Well name Location Company Ahmedn Khwaja " " Drabikas " " Essa Khel Mianwali " Naran shah " " chrat Fateh jang " Kala chitta
PPL
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