Vahabov Ulvi
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FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN Vahabov Ulvi Institute of Geology ANAS Deposits of Productive Series (PS) have been for a long time considered to be the main reservoir for the territory of Azerbaijan and adjacent waters of the South Caspian Basin (SCB). During this time, geological and geophysical investigations in the territory of the land of Azerbaijan and the adjacent waters of the Caspian Sea have been opened and at present (44 onshore and 27 in the Caspian Sea) 71 oil and gas fields including and others are under development. Despite the long duration of studies conducted by geologists of different specialties and areas, many questions still remain controversial Deposits of PS as previously described by many researchers deposited on a rough surface of relief both within the land area and water area of Azerbaijan part. Paleological map compiled by author proves these statements and to a large extent characterize geological setting of PrePliocene age. According to this map one can see that distribution of thicknesses both during lower and upper stages of PS in regional plan is in direct relationship on complexes of underlying deposits. Legend Yalam a Russia Kusari J Structures Hachm az K2 Agzebirchala Pg Georgia Talabi Pnt Mi Kainardja Pg Mi-Pg Srm Oii and gas fields Gizilburun-deniz Zorat-deniz Eo Migachavir reservoir Mi-Srm Pnt Am irarch Kurdachani-deniz Mkp U talg i Kura Zardob Muradchanli K.Haram i Kurovdag Baku Isolines of PS deposits thickness Ashrafi Chilov Zone of PS deposits lask Gunashli Gurgani Bahar Garabah Chirag Аzeri Vurgun Shahdeniz Pnt Kursanga Um id Mi-Pg Garabagli 354 Pnt Pnt Srm Pnt Khara-Zira Araks Dan Ulduzu Surachani Lokbatan 8 M ar t Sangachali Duvani-deniz Shihbagi Srm Gilavar Piralahi Kurdachani Romana Pnt Srm Sh.Absheron Go sh ad ash Great Caucasus Geokchay Kanaz State border of Azerbaijan Caspian Sea Babazanan Srm Kalamadin - Hilli Lask of PS deposits N eftech ala Neftechala-deniz South-Kurinskai Lankapan Astara Lankaran-deniz Paleogeological map of Pre-Lower Pliocene age Yalama Hudat 0 Agzebirchala 500 500 0 Xachmaz Talabi West Kainardja Kainardja Gizilburun G a rbi A bs he ron Sh.Absheron Gizilburun-deniz 710 Zorat-deniz Zone of PS deposits lack Sand-ridge Absheronskay 635 Hazri 342 Arzu 106 Dan Ulduzu Kurdashi-deniz Nardaran-deniz 265 Kurdahani-deniz Halli 900 1219 Kirmaku Kurdashi Pirallahi Аshrafi Novhani Gala 468 323 Buzovna Gurgani 510 Neft Dashlari Shikay Romana485 770 1200 Anart Turkani Gunashli Djanub I Bibi-Eibat 787 Utalgi Kalamadin B.Harami Gar ab ah Sangachali Djanub II 8 Mart 580 1302 Chiragг Solohai 764 Duvani-deniz Bahar K.Harami Saba 600 600 1000 Kalmas Khara-Zura 297 652 Mishovdag Pirsagatт Shahdeniz A ze ri Hamamdag Kapaz 593 252 1000 Umud Garasu Mushvig Sangi-Mugan 500 Kursanga Agzebir Babek 450 Aran-deniz 1000 1000 Dashli 614 Hilli Chegil1000 734 deniz Neftechala 336 Sabail Neftechala-deniz Shurabad-deniz Great Caucasus Baku Zone of PS deposits lack Caspian Sea Atashka Nahchivani 581 Gizilagach Mugan-deniz Kurdashi Inam Talih-deniz Araz-denizз Lankaran-deniz 0 500 1000 Map of Lower group PS Their sections they open a new series of sand deposits of Absheron facies of PS which deposited in such conditions when accumulation of sand material occurred within a relatively small part of Azerbaijan territory of Azerbaijan – Absheron oil-gas bearing area, Djeirankechmyaz depression, Low Kura depression and the adjacent sea area . These processes occurred together with erosion and redeposition of clayey rocks which composed the areas «Caucasian land», and Absheron geoanticline . Yalama 168 Hachmaz 626 Georgia Russia 5 00 Agzebirchala Kura 1070 а л Adjinour 998 1500 1000 500 Gizilburun Zorat-deniz 500 M ingachevir reservoir SumgaitGarbi Absheron Shargi Absheron Shurabad deniz Goshadash Dan Ulduzu Yashma-denis 1695 428 Great Caucasus 0 1 Amirarh 1320 2000 i West Kainardja Kainardja Р . А Gabiri 2500 з а н ь Georgia Ta l ab Geokchay 0 50 1500 Kurdahani-deniz Aipara Kurdahani Romana Surahani Garachuhur 2000 Kalamadin Padar 2000 Muradhanli Saatli 437 Zone of PS deposits lack Baku Gumadasi 2500 Zardob Araks Iran Beilagan Ashrafi 2042 2470 M.Harami Bahar Sangachali 2685 2802 8 Mart Mishovdag Duvany-de niz 2794 Kursanga K hara-Zura Shahdeniz 2254 Bulla-deniz 4299 Kurovdag Umud 3640 4223 Garabagli Babek 2014 Dashli Babazanan Sh.Vezirov 2850 Sabail Bandovan-deniz Hilli Vezirov 3041Neftechala Atashkah 5000 2860 5000 Djanub5000 Mugan-deniz Gizilagach 4500 2820 Кurdashi II 4000 Kurdashi Bolgarchay Inam Talish-deniz Lankoran 3500 Lankoran-deniz 3000 2000 2500 1500 1000 500 Map of Upper group PS Neft Dashlari Ufug Gunashli Chirag Oguz 2113Azeri 2839 2227Vurgun Kapaz 2521 3000 3500 4000 4500 Caspaian Sea 500 1000 1500 2000 2500 At the beginning of formation of the upper stage of PS the activity of vertical tectonic movements led to the fact, that waters of paleobasin poured into the territory of Azerbaijan – capturing the central and Southern part of Shamaha-Gobustan trough. Small Djeirankechmyaz, large Adjinaur and Kura bays were formed within the Low Kura depression. On the North Adjinaur bay is limited by Greater Caucasus, on the South by territory of modern Mingechaur water reservoir. On the South Kura bay is limited by uplifts of Lesser Caucasus and Talysh. Two small bays formed by delta of PaleoAraks and PaleoBolgarchai rivers can be found within this bay. Low Kura bay itself was formed by delta of Paleo Kura. Similar bays formed in Siyazan monocline and the adjacent waters of the Absheron archipelago. Conclusions: 1. Sedimentation processes throughout the while age of PS are characterized by a complex nature than previously thought; 2. It was proved and graphically clarified with which deposits the conformable and unconformable bedding of rocks of PS at the underlying complexes is connected; 3. Maximum thickness of deposit of productive series without dip angles is less than 6000 m. The results of conducted study will allow to correct the location for location of a more prospective wells for their drilling within the territory of Azerbaijan and the adjacent waters of the Caspian Sea and conducting of purposeful drilling.
