Geochemical description and oil&gas generation potential of Mesozoic formations within the Gydan and Yenisei-Khatanga oil and gas bearing regions

A12 oil and gas reservoirs in L Oilfield Carboniferous carbonate rocks of oil and gas bearing system, saturated with the gas cap and edge water and bottom water reservoir. The A12 oil and gas reservoir structure the relief of the dome-shaped anticline, oil, gas and water distribution controlled by structure, the gas interface -2785 meters above sea level, the oil-water interface altitude range -2940 ~-2980m, average-2960m. Average reservoir thickness of 23m, with a certain amount of dissolved gas drive and gas cap gas drive energy, but not very active edge and bottom water, gas cap drive index.

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Spatial Organisation of Gas Resources Development in the Yamal Oil and Gas Bearing Region

Arctic and North ◽

10.37482/issn2221-2698.2021.45.61 ◽

2021 ◽

pp. 61-74

Author(s):

Asya A. SHCHEGOLKOVA ◽

◽

Keyword(s):

Natural Gas ◽

Oil And Gas ◽

The Arctic ◽

Hydrocarbon Potential ◽

Spatial Organisation ◽

Gas Industry ◽

Investment Projects ◽

Oil Gas ◽

Gas Bearing ◽

Resources Development

The Yamal oil and gas province (OGP) is strategically important for the Russian gas industry. In the coming decade, gas production in Yamal is expected to grow to 180–200 billion cubic meters per year. The main goal of the article is to solve a scientific problem consisting in the study of the spatial organization of the development of gas resources, determination of the rational structure of reproduction of natural gas reserves in the Yamal oil-gas-bearing region in the context of the modernization of the Arctic gas industry complex. The article assessed the gas resources of Yamal, revealed trends in the economic development of natural gas fields, presented the characteristics of investment projects based on the fields being developed. An analysis was carried out that made it possible to differentiate the deposits by the degree of their prospects, and a strategy for expanding the hydrocarbon potential of Yamal was determined. It was revealed that the main areas of production in the Yamal oil-gas-bearing region are associated with the development of deposits with a high level of Cenomanian deposits. Such deposits are characterized by a higher increase in the capitalization and profitability of investment projects in real time compared to fields located in the northern and far eastern seas, including on the shelf of the Kara Sea. It was concluded that the strategy for the reproduction of hydrocarbon potential will be aimed at conducting prospecting and exploration in order to transfer forecast resources to industrial reserves of natural gas. The study applies a general scientific methodology providing for systemic and comprehensive approaches to justify the spatial organisation of gas resources development in the Yamal oil and gas bearing region. A significant body of factual material on the state of free gas and condensate reserves in Yamal has been analyzed. The results of the research were obtained with the use of comparative-analytical, statistical methods of economic analysis.

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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)

Azerbaijan Oil Industry ◽

10.37474/0365-8554/2020-2-10-15 ◽

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.

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STUDY OF GENESİS OF PRODUCTİVE SERİES SEDİMENTS BY PETROPHYSICAL PARAMETERS

Procedings of Azerbaijan High Technical Educational Institutions - PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions ◽

10.36962/0703202150 ◽

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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Impact of tectonic faults on formation of oil-gas traps in Yevlakh-Aghjabedi oil-gas bearing region

Azerbaijan Oil Industry ◽

10.37474/0365-8554/2021-3-4-10 ◽

2021 ◽

pp. 4-10

Author(s):

B.S. Aslanov ◽

◽

A.I. Khuduzade ◽

R.A. Asgerova ◽

Yu.F. Ismailzade ◽

...

Keyword(s):

Upper Cretaceous ◽

Oil And Gas ◽

Middle Eocene ◽

North West ◽

North East ◽

The North ◽

Industrial Oil ◽

Geophysical Surveys ◽

Oil Gas ◽

Gas Bearing

Via geological-geophysical surveys carried out on the north-east border of Yevlakh-Aghjabedy downfold in the second half of the last century, the oil-gas bearing content of deeply-immersed Mesozoic horizons of Upper Cretaceous, as well as shallow layers of Paleogene and Miocene has been defined. Oil-gas bearing Productive Series have been discovered within Muradkhanly, Zardab, Shykhbaghy and Jafarli structures, which belong to Zardab-Muradkhanly-Jafarli belt. Oil-gas reservoirs are lithologically associated mainly with fractured superfusive and carbonate rocks of Upper Cretaceous, as well as sedimentary-volcanogenic rocks of Middle Eocene and partially terrigenic collectors of Maikop-Chokrak, which are layer-arch type of trap. Some researchers came to the conclusion that within favorable geological circumstances on the north-east border of the downfold, collectors of Mesozoic sediments may contain industrial oil and gas deposits as well. To that end, recently the major capacity of exploration drilling and geoexploration was focused within Yevlakh-Aghjabedy downfold, where Mesozoic structures are widespread alongside with Paleogen-Miocene sediments. Deep structural-tectonic framework and oil-gas bearing content both on south-west and north-east slopes of the downfold was specified via the results of conducted works. It was defined that by hydrocarbon saturation, north-west and south-east slopes sharply differ from each other both in the view of structural-tectonic and oil-gas bearing capacity, probably associated with various cycles of folding of Cenozoic and Mesozoic ages.

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The theoretical-empirical technique of hydrocarbons prediction in wells sections. New aspects

Geofizicheskiy Zhurnal ◽

10.24028/gzh.0203-3100.v43i1.2021.225545 ◽

2021 ◽

Vol 43 (1) ◽

pp. 160-180

Author(s):

L. Skakalska ◽

A. Nazarevych ◽

V. Kosarchyn

Keyword(s):

Oil And Gas ◽

Gamma Ray ◽

Water Saturation ◽

Thin Layers ◽

Gas Content ◽

Empirical Relationships ◽

Acoustic Logging ◽

Reservoir Rocks ◽

Oil Gas ◽

Gas Bearing

We present the developed theoretical-empirical technique for predicting of rocks’ oil-and-gas bearing in wells sections according to acoustic logging (AL) and core research (CR) and its variants by using data of other loggings and also the results of testing them on wells sections data in the Western oil and gas bearing region of Ukraine (WOGR). The mathematical apparatus of the created technique is based on a mathematical model of solid porous rock, empirical relationships between elastic and reservoir characteristics of rocks and acoustic logging data for specific studied wells. The key parameter in the calculations is the rock compressibility. Determination of the porosity of rocks and prediction of the type of pore filler (water, oil, gas) is implemented by comparing the results of calculating the velocities using theoretical and constructed empirical relationships with the actual data of the AL, by the parameter of compressibility of rocks, by the density of the pore filler fluid. Additional versions of the technique have been developed based on correlation dependences and data from other logging methods — gamma-ray logging (GL), electric logging (EL/SP), offset method and seismic logging (SL). They are used in case of absence of AL data for the studied wells or for the intervals of their sections, and also for improving the reliability of prediction the oil and gas content of these sections. The software for the implementation of the technique was developed in Fortran, C# and Excel software environments. The technique was tested on the data of wells of a number of structures of the WOGR of Ukraine (Lishchyns’ka, Buchats’ka, Ludyns’ka, Zaluzhans’ka, Zarichnyans’ka and Nyklovyts’ka).The technique ensures reliable prediction of petrophysical characteristics, porosity and oil-gas-water saturation of rock layers of different thicknesses (including thin layers — from 0.1—0.2 m) in well sections. For this, in addition to the data of the general parametric base of the WOGR reservoir rocks, the specially constructed refined empirical relations for various specific types and subtypes of the WOGR reservoir rocks are used, they are based on the results of analysis of petrophysical characteristics of those rocks.

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