FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN

Vahabov UlviInstitute 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 Pre-Pliocene 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.

Srm

Srm

Pnt

PntMi-Srm

Pnt

Srm

Mi-Pg

PntPg

K2J

Mi

Mi-Pg

Srm

Astara

Lankapan

Baku

Kanaz

Аzeri

Chirag

Gunashli

Kusari

TalabiKainardja

Hachmaz

Yalama

Agzebirchala

Gizilburun-denizZorat-deniz

Goshadash

PntPnt

Kurdachani-deniz

Romana

Surachani

8 M artDuvani-deniz

Khara-Zira

Bahar

ShahdenizK.Harami

Kursanga

Babazanan

GeokchayAmirarch

Zardob

Shihbagi

Muradchanli

Kurovdag

Garabagli

Neftechala-deniz

Lankaran-deniz

Srm

Pg

U talg i

Migachavirreservoir

Araks

Kura

Eo

Mkp

Lokbatan

Dan Ulduzu

Ashrafi

Vurgun

GarabahGurgani

Piralahi

Chilov

Gilavar

Sh.Absheron

Umid

Sangachali

Neftechala

Hilli

South-Kurinskai

Kurdachani

GreatCaucasus

Russia

Georgia

Caspian SeaPnt

354

Kalamadin -

Structures

Oii and gas fields

Isolines of PS deposits thickness

State border of Azerbaijan

Lask of PS deposits

Zone of PS deposits lask

Legend

Paleogeological map of Pre-Lower Pliocene age

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 .

Caspian Sea

Baku

1000

500

05005000

1000

1000

10001000

0

A zeri 593

Chiragг 764

Gunashli 787

Shahdeniz -

Bahar600K.Harami

Mishovdag

-

-

-Kursanga

Kalamadin -

UtalgiB.Harami -

Talih-deniz

Mugan-deniz

1000500Lankaran-deniz

Araz-denizз

Kurdashi

Neftechala-deniz

Neftechala 336

Hilli 734

Chegil- deniz

AtashkaNahchivani 581

Sabail

Babek

Umud

Dashli 614

Aran-deniz

Sangi-Mugan

HamamdagPirsagatт

Khara-Zura 652

Duvani-deniz 600 Saba

Mushvig

Garab ah 580

Dan Ulduzu 265

Hazri 342 Arzu

106

Аshrafi 468Novhani

323

Kapaz 252

Yalama

Hudat

XachmazAgzebirchala

TalabiWest Kainardja

KainardjaGizilburun

Gizilburun-denizZorat-deniz

Shurabad-deniz

Kurdashi-deniz Nardaran-denizKurdahani-deniz

Sh.AbsheronGarbiA bsheron 710

900 Halli 1219

Pirallahi

Gurgani

Djanub I

Djanub II 1302

Neft Dashlari770 1200

Gala

510

Turkani

Kurdashi

Buzovna

Romana

Kirmaku

Bibi-Eibat

Solohai

Kalmas 297

Agzebir 450

Inam

Sand-ridge Absheronskay 635

GreatCaucasus

8 MartSangachali

485

Garasu

Gizilagach

Shikay Anart

Zone of PSdeposits lack

Zone of PSdeposits lack

Map of Lower group PS

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.

Kura

GeorgiaGabiri

RussiaGeorgia

Iran

Bolgarchay

Araks

Amirarh

Zardob

Mingachevirreservoir

5001000150020002500

3000350040004500

5 0 0 05000

5000

4500

4000

3500

3000

2500200015001000

500

500100015002000

2500

Adjinour 998

Beilagan

Lankoran

Kapaz2521

Azeri2227

Chirag2113

Gunashli

Vurgun

Ufug

Ashrafi2042

Dan Ulduzu

Aipara

Sh.Vezirov

Vezirov

Sabail

Djanub

Dashli

Mugan-deniz

InamКurdashi II

Lankoran-deniz

Talish-deniz

Kurdashi

Atashkah

Bandovan-deniz

Caspaian Sea

Great Caucasus

Zone of PS deposits lack

M.Harami2685

Kurovdag 3640

Neftechala2860

Gizilagach 2820

Kainardja

Yalama168

0Hachmaz 626

Agzebirchala1320

Gizilburun

BakuGumadasi2470

Bahar2802

Shahdeniz 4299

Geokchay

1500

2000

2500

500

Neft Dashlari

Shargi Absheron

GoshadashGarbi AbsheronSumgait-

denizShurabad

West Kainardja

Zorat-deniz

Yashma-denisKurdahani-deniz

Kalamadin

Muradhanli

Hilli 3041

Sangachali8 Mart

Umud 4223Babek

Mishovdag 2794

KurdahaniRomanaSurahaniGarachuhur

428

Saatli437

Padar2000

Kursanga 2254

Babazanan 2850

Garabagli 2014

Oguz2839

1695

1070

Map of Upper group PS

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.

Conclusions: