Seismic geological conditions of the South Caspian depression and the mechanism of formation of oil- and gas-bearing structures in the centers of paleoearthquakes

2021 ◽  
pp. 39-45
Author(s):  
G.O. Veliev ◽  
◽  
N.A. Shirinzade ◽  
S.G. Safarova ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
Mechanism Of Formation ◽  
The South ◽  
Geological Conditions ◽  
Caspian Depression ◽  
Gas Bearing

scholarly journals Formation of oil and gas reservoirs in deep water areas of the South Caspian Depression

2017 ◽  
Vol 21 (4) ◽  
pp. 169-174 ◽  
Author(s):  
Gahraman Nariman Ogly Gahramanov
Keyword(s):  
Oil And Gas ◽  
Deep South ◽  
The South ◽  
South Caspian Basin ◽  
Gas Reservoirs ◽  
Production Wells ◽  
Exploration And Production ◽  
Caspian Depression ◽  
Impacting Factors ◽  
High Layer

The aim of the article is the identification and characterization of complex factors acting simultaneously on forming a large-sized reservoirs in the deep South Caspian Basin, as well as the formation of a model based on a combination of causing the formation of hydrocarbon deposits synchronously occurring natural processes. The article comments on reasons for high layer pressures existing in the fields located in the South Caspian Depression (SCD), studies impacting factors and develops a methodical estimation on this basis. The tectonic factor and density-barometric model can become the main criterion for selection of priority projects for exploration, site selection for drilling and to accommodate exploration and production wells. Obtained results allow conducting effective studies of the exploration and development of oil and gas condensate fields in the SCD area.

Tectonic Criteria of Oil and GAS Potential at the Transitional Part of the Susha-sea Along the Western Coast of the South Caspian Depression

2021 ◽  
Author(s):  
Baylar Aslanov ◽  
Nurlan Jabizade ◽  
Arastun Khuduzadeh ◽  
Fidan Aslanzade
Keyword(s):  
Oil And Gas ◽  
Central Place ◽  
Western Coast ◽  
The South ◽  
The West ◽  
The North ◽  
Oil And Gas Fields ◽  
Caspian Depression ◽  
Offshore Oil And Gas ◽  
Gas Fields

Abstract The southern part of the South Caspian oil and gas Basin (SCB) is one of the main oil and gas producing regions in the central part of Eurasian continent. The large number of offshore oil and gas fields is located here, therefore the basin considered as a promising direction for the further perspective zones survey. The basin is located between the uneven-aged mountain structures of the Lesser and Greater Caucasus in the west, the Great Balkhan and Kopet-Dag in the east, the Talish and Elbrus ridges in the south. In the north, it is limited by a sub-latitudinal regional deep fault, which fixes the northern slope of the complex Absheron-Balkhan zone of uplifts, which is part of the South Kura and Western Turkmenistan depressions. Among the structural elements of the second order, the South Absheron depression, the complex Abikh swell and the Javadkhan-Natevan zone in the west should be noted; Turkmen terrace, Ogurchinskaya step and Chikishlyar-Fersmanovskaya-Weber-Western zone in the east (Fig. 1). The central place in the structure of the basin is occupied by the South Caspian Mega Depression (SCMD), in the most submerged part of which - the pre Elbrus Basin - the basement lies at a depth of about 25 km, and the sedimentary stratum, including Mesozoic, Cenozoic and Quaternary formations, is largely represented by the Pliocene - post-Pliocene sediments, reaching a total thickness of 8–10 km and more in the troughs (Fig. 2, 3).

Evaluation of oil-gas bearing potential associated with fold formation properties of Lower Kur depression and Baku archipelago

2020 ◽  
pp. 13-20
Author(s):  
G.J. Nasibova ◽  
◽  
N.R. Narimanov ◽  
M.S. Babaev ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
The South ◽  
Gas Generation ◽  
North West ◽  
The North ◽  
Compressive Stresses ◽  
Oil Generation ◽  
Caspian Depression ◽  
Fold Formation ◽  
Earth Temperature

The article explores the oil and gas generation properties and hydrocarbon content of Lower Kur depression and Baku archipelago based on the studies of morphology, space position of local uplifts, types of faults, evolution of mud volcanoes, distribution properties of compressive stresses and earth temperature environment. It was defined that as a result of action of longitudinal and lateral folding mechanisms predominantly brachy-form structures had been formed, the anticline zones and trends of which show that their space position is controlled by compressive stresses arising within the narrow north-western part of the Iranian-Afghani plate. The folding process in Oligocene-Pliocene series of the South-Caspian depression basically takes place due to the dynamics of active Maikop clays. Local uplifts of reviewed area are originated no later than the end of the Miocene. Carried out analysis justifies that the intensity of folding processes within Lower Kur depression and Baku archipelago rises both in time and from the south-east towards the north-west. A diagram of vertical oil generation zoning for Lower Kur depression and Baku archipelago has been developed based on the earth temperature data, according to which it was established that the Upper Cretaceous, Paleogene-Miocene sediments and the Productive Series represent strata generating commercial oil and gas.

Structural-tectonic criteria of oil-gas bearing capacity on the western coastal "land-sea" transition zone of South Caspian depression (in the order of discussion)

2020 ◽  
pp. 10-15
Author(s):  
B.S. Aslanov ◽  
◽  
S.M. Mammadova ◽  
I.I. Guliyev ◽  
V.B. Jabrailzadeh ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Great Majority ◽  
Gas Production ◽  
Deep South ◽  
Oil And Gas Production ◽  
Geophysical Surveys ◽  
Caspian Depression ◽  
Sediment Layers ◽  
Oil Gas ◽  
Gas Bearing

South Caspian oil-gas bearing basin is the richest Caspian region for oil and gas production. The great majority of produced fields are located here. Therefore, coastal states consider it the prospective region. Briefly, the paper describes the geographic and tectonic location of South Caspian, as well as the structural-morphological features of Mezo-Cenozoic sediment layers. It is emphasized that ultra-deep South Caspian depression is the major oil-gas forming bolson, both in the paleo-geological evolution process and nowadays. However, there is no single opinion on its role in the formation of oil and gas deposits among the scientists and researchers. Based on the comparative analysis of specialists’ opinion and developed tectonic geographic demarcation maps, deep sections and models as well, it is supposed that coastal, particularly western “land-sea” transition zones may be quite oil-gas forming medium. For greater certainty, the authors offer conducting high-accuracy geophysical surveys.

scholarly journals PALEO- AND EXISTENT HYDROGEOLOGICAL CONDITIONS OF THE BILCHE-VOLYTSA ZONE OF THE CARPATHIAN OIL- AND GAS-BEARING PROVINCE

2019 ◽  
Vol 2 (179) ◽  
pp. 68-83
Author(s):  
Vasyl HARASYMCHUK ◽  
Halyna MEDVID ◽  
Maria KOST ◽  
Olha TELEGUZ
Keyword(s):  
Oil And Gas ◽  
Oil Fields ◽  
Time Interval ◽  
Mechanism Of Formation ◽  
East European ◽  
Hydrogeological Conditions ◽  
Clay Rocks ◽  
Gas Fields ◽  
Hydrocarbon Deposits ◽  
Gas Bearing

On the basis of paleo- and modern hydrogeological sings it was possible to establish a space-time mechanism of formation and reservation of gas and oil deposits in the Bilche-Volytsa zone of the Carpathian oil- and gas-bearing province. The time interval of their forming applies on the last cycle of the hydrogeological time. Geodynamic and secondary geostatic loadings, that manifested themselves during the dynamo-elision stage (Late Badenian – up to the present) the development of which was caused by thrust motions of the covers, turned out to be the factors of migration of aqueo-hydrocarbon mixtures deep underthrust structures of the Inner zone. Time calculations for reservation of deposits of gas fields have determined their age which does not exceed 6 million years. The south-western trend of motion of paleo- and modern infiltration waters in combination with reversed dynamo-elision have caused here the existence hydrodynamically balanced system squeezed between them which differs by favourable conditions for the formation and reservation of hydrocarbon deposits. We have ascertained the connection between piezomaxima and areas of tectonic dislocation, mainly transverse, that points out the ways of transsference of hydrocvarbon mixtures from deep-seated horisons. Discharge areas (perspective on a plane of searching for new deposits) are limited by local piezomaxima on the background of regional fields. Areas of paleopiezominima in the near-fault part of the Ugerske-Kosiv blocks at the boundary with the East European Platform are favourable for localization of hydrocarbon deposits. Results of the baroosmotic analysis of hydrogeological conditions of gas and oil fields have revealed baroosmotic flows of waters molecules in the thickness of clay rocks, their intensity and directions of motion and connections with deposits.

scholarly journals STUDY OF GENESİS OF PRODUCTİVE SERİES SEDİMENTS BY PETROPHYSICAL PARAMETERS

2021 ◽  
Vol 07 (03) ◽  
pp. 50-59
Author(s):  
Kifayet Kerimova Kifayet Kerimova
Keyword(s):  
Qualitative Analysis ◽  
Oil And Gas ◽  
High Rate ◽  
Caspian Basin ◽  
The South ◽  
South Caspian Basin ◽  
Direct Dependence ◽  
Sedimentation Environment ◽  
Oil Gas ◽  
Gas Bearing

It is known that over than 90% of oil produced in Azerbaijan is extracted from the South Caspian Basin. The South Caspian basin is one of the largest deeply buried basins. Sedimentation process here is characterized by high rate as 25 km for 150-170 mln. years (0.6-0.7 km/mln.years). Last year’s due to acceleration in search and exploration works and assessment of the outlook for oil and gas deposits research of the genesis of Productive Series attracts a lot of attention. İn this paper “Quantitative and qualitative models of log facies” on the basis of well logging data the analysis of lithology, facies and genesis of sedimentary rocks in Pirallahi structure have been done and results were derived. Within the framework of the study by use of Neuralog software based on LL, SP, GL, NGL and other log types the data have been transformed into the LAS format, then the, porosity, bulk clay coefficient and thickness of facies alteration models have been designed by use of Petrel software. Study of sedimentation environment constantly draws the interest of geoscientists due to the direct dependence of structure and identification of oil and gas traps on sedimentation environment. This paper deals with study of genesis of Productive Series deposits based on quantitative and qualitative analysis of logging curves. The study target is Kirmaky suite across Pirallahi field of Absheron oil-gas bearing region. Study of sedimentation environment constantly draws the interest of geoscientists due to the direct dependence of structure and identification of oil and gas traps on sedimentation environment. This paper deals with study of genesis of Productive Series deposits based on quantitative and qualitative analysis of logging curves. The study target is Kirmaky suite across Pirallahi field of Absheron oil-gas bearing region. Keywords: facies analysis, log facies, genesis, flow, bar, coastal plain.

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