FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN Vahabov Ulvi Institute of Geology ANAS...
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Transcript of FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN Vahabov Ulvi Institute of Geology ANAS...
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
Pnt
PgK2
J
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 art
Duvani-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
N eftechala
Hilli
South-Kurinskai
Kurdachani
GreatCaucasus
Russia
Georgia
Caspian Sea
Pnt
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
1000
1000
0
A zeri 593
Chiragг 764
Gunashli 787
Shahdeniz -
Bahar600K.Harami
Mishovdag
-
-
-Kursanga
Kalamadin -
UtalgiB.Harami -
Talih-deniz
Mugan-deniz
1000500
Lankaran-deniz
Araz-denizз
Kurdashi
Neftechala-deniz
Neftechala 336
Hilli 734
Chegil- deniz
AtashkaNahchivani 581
Sabail
Babek
Umud
Dashli 614
Aran-deniz
Sangi-Mugan
Hamamdag
Pirsagatт
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
Xachmaz
Agzebirchala
TalabiWest Kainardja
KainardjaGizilburun
Gizilburun-denizZorat-deniz
Shurabad-deniz
Kurdashi-deniz Nardaran-denizKurdahani-deniz
Sh.AbsheronGarbiA bsheron 710
900Halli 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
M ingachevirreservoir
5001000150020002500
3000350040004500
5 0 0 0
50005000
4500
4000
3500
3000
250020001500
1000500
50010001500
20002500
Adjinour 998
Beilagan
Lankoran
Kapaz2521
Azeri2227
Chirag2113
Gunashli
Vurgun
Ufug
Ashrafi2042
Dan Ulduzu
Aipara
Sh.Vezirov
Vezirov
Sabail
Djanub
Dashli
Mugan-deniz
Inam
Кurdashi 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
Goshadash
Garbi 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: