Kohat-Potwar Basin or Upper Indus Basin

Presentation about upper Indus Basin

1. Presented by: Zeeshan Ahmad Presented To : Prof Anwar Qureshi UAJK

2. LITHOSTRATIGRAPY OF UPPER INDUS BASIN AND HC PRODUCTION

3. 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.

4. 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

5. 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.

6. 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 S uk Formation.

7. 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.

8. 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.

9. 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

10. 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  

11. Dry & a banded wells Well name Location Company Latamber karak PPL Khwaj           Kohat OGDCL Nakband         "  " Sahib gul        “  " Shekhan          "   " Sumari              "   "

12. Well name Location Company Ahmedn Khwaja   "   " Drabikas               "  " Essa Khel     Mianwali   " Naran shah    "   " chrat           Fateh jang      " Kala chitta                 PPL