scholarly journals THE IDENTIFICATION OF THE PRODUCTIVE STRATA WITHIN TYNIV-HRUSHIV OIL AND GAS FIELD

2019 ◽  
pp. 26-31
Author(s):  
D. Fedoryshyn ◽  
I. Bagriy ◽  
A. Trubenko ◽  
S. Fedoryshyn ◽  
N. Khovanets
Keyword(s):  
Oil And Gas ◽  
Geological Structure ◽  
Well Testing ◽  
Key Factors ◽  
Correlation Pattern ◽  
Gas Field ◽  
Reservoir Rocks ◽  
Oil And Gas Field ◽  
Set Up ◽  
Gas Bearing

The findings of the geological and geophysical researches reveal the high prospects of Krukenychi Depression in terms of new deposits discovery. Notably, some productive reservoir rocks have been indentified within the Neogene formations of Tyniv-Hrushiv Oil and Gas Field. The major gas capacity is associated with the lower Dashava deposits; that is supported by considerable well rates which were apparent within previously discovered fields. According to the readings of the geophysical well logging, the correlation pattern of prospective strata distribution has been introduced; as a followup, it has been determined what the fluid content is within the lower Dashava age. Consequently, just over the gas-bearing reservoir rocks, the waterbearing strata have been located. The geological structure of the lower Dashava age is featured by the two-meter unit of claystones and siltstones which separate the water-bearing strata from the productive ones. The very feature of the geological structure causes the encroachment of productive horizons; that is proved by the well testing results. The more thorough researches help to define the key factors which influence the distribution of the sand material through the section of the Sarmatian age. Furthermore, it is possible to set up a water and gas ratio within the productive strata.

scholarly journals Productivity Criteria for Complex Reservoirs Based on the Study of Deep-Adsorbed Gases

2021 ◽  
Vol 133 (2) ◽  
pp. 27-30
Author(s):  
D. A. Kobylinskiy ◽  
Keyword(s):  
Research Method ◽  
Oil And Gas ◽  
Geological Structure ◽  
Core Material ◽  
Test Results ◽  
The West ◽  
Gas Field ◽  
The Core ◽  
Oil And Gas Field ◽  
Complex Geological Structure

The work is devoted to the development of geochemical criteria for determining the nature of saturation for deep-adsorbed gases in the core. As the object of investigation used the core material selected in the fields in the Nadym-Pyrskoy oil and gas field. In each sample, 72 components were determined, namely, hydrocarbons of different material groups: normal, branched, polycyclic, and aromatic compounds from butane to dodecane. With respect to the quantitative distribution and correlation among the components, qualitative geochemical indicators of sediment productivity have been developed. The saturation character established by the criteria of deep-adsorbed gases was confirmed by the test results. In this regard, this research method significantly increases the effectiveness of diagnostics of prospective deposits, the application of which is relevant in the territory of the West Siberian oil and gas basin, especially when studying deep-submerged deposits of complex geological structure.

Geological and Field Feasibility Study of Field Development Management Using Marker-Based Production Profiling Surveillance in Horizontal Wells: The Case Study of the Yuzhno-Vyintoiskoye Field

2021 ◽  
Author(s):  
Marat Rafailevich Dulkarnaev ◽  
Yuri Alexeyevich Kotenev ◽  
Shamil Khanifovich Sultanov ◽  
Alexander Viacheslavovich Chibisov ◽  
Daria Yurievna Chudinova ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Water Saturation ◽  
Clay Content ◽  
Horizontal Wells ◽  
Integrated Approach ◽  
Geological Structure ◽  
Gas Field ◽  
Field Development ◽  
Reservoir Rocks

In pursuit of efficient oil and gas field development, including hard-to-recover reserves, the key objective is to develop and provide the rationale for oil recovery improvement recommendations. This paper presents the results of the use of the workflow process for optimized field development at two field clusters of the Yuzhno-Vyintoiskoye field using geological and reservoir modelling and dynamic marker-based flow production surveillance in producing horizontal wells. The target reservoir of the Yuzhno-Vyntoiskoye deposit is represented by a series of wedge-shaped Neocomian sandstones. Sand bodies typically have a complex geological structure, lateral continuity and a complex distribution of reservoir rocks. Reservoir beds are characterised by low thickness and permeability. The pay zone of the section is a highly heterogeneous formation, which is manifested through vertical variability of the lithological type of reservoir rocks, lithological substitutions, and the high clay content of reservoirs. The target reservoir of the Yuzhno-Vyintoiskoye field is marked by an extensive water-oil zone with highly variable water saturation. According to paleogeographic data, the reservoir was formed in shallow marine settings. Sand deposits are represented by regressive cyclites that are typical for the progressing coastal shallow water (Dulkarnaev et al., 2020). Currently, the reservoir is in production increase cycle. That is why an integrated approach is used in this work to provide a further rationale and creation of the starting points of the reservoir pressure maintenance system impact at new drilling fields to improve oil recovery and secure sustainable oil production and the reserve development rate under high uncertainty.

Hydrogeological conditions of the Mesozoic hydrogeological basin within the Russkoye gas and oil field

2020 ◽  
pp. 20-35
Author(s):  
V. A. Beshentsev ◽  
Yu. I. Salnikova ◽  
S. V. Vorobjeva
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
Regional Distribution ◽  
Geological Structure ◽  
Oil Field ◽  
Natural Conditions ◽  
Gas Field ◽  
Pressure System ◽  
The Earth ◽  
Oil And Gas Field

The article is devoted to the hydrogeochemical conditions of the Mesozoic hydrogeological basin within the Russkoye oil and gas field. The text gives valuable information on the natural conditions, geological structure, geotemperature regime of the bowels of the Earth and the composition of groundwater of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes. The change in the composition of groundwater in the section of the AptianAlbian-Cenomanian complex has been revealed. Vertical inversion zoning that traces the underlying the Neocomian complex is established. We describe the main features of the regional distribution of reservoir pressures. Hydrodynamic schemes of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes are given in the article. These schemes show that the Russkoye gas and oil field is located in the zone of low reservoir pressures. The above vertical inversion zoning and low reservoir pressures are associated with the location of the field within the elisional hydrodynamic water pressure system of the Yamal-Gydan lineaments. The data of the block-fault model of the considered field were used in the course of the study. The block-fault structure predetermined the migration of hydrocarbons and the formation of tectonically screened deposits.

GEOLOGICAL STRUCTURE AND OIL AND GAS POTENTIAL OF THE PRE-JURASSIC DEPOSITS OF THECENTRAL PART OF THE WEST SIBERIAN PLATE

2017 ◽  
pp. 58-66 ◽  
Author(s):  
A. B. Tugareva ◽  
G. A. Chernova ◽  
N. P. Yakovleva ◽  
M. L. Moroz
Keyword(s):  
Oil And Gas ◽  
Geological Structure ◽  
The West ◽  
Reservoir Rocks ◽  
Gas Accumulation ◽  
Basement Rocks ◽  
Middle Paleozoic ◽  
Gas Potential ◽  
Gas Bearing

In the presented work the features of the geological structure and oil and gas potential of the pre-Jurassic basement rocks are discussed. In the sediments of the oil and gas bearing horizon of zone of contact five types of reservoir rocks are distinguished. The greatest prospects for oil and gas potential are associated with the carbonate depositions of the Middle Paleozoic and effusive of the medium-acidic composition of the Permian-Triassic and Triassic age. From these deposits in the territory of the district the maximum oil inflows were received. 15 promising zones of oil and gas accumulation in the deposits of the oil and gas bearing horizon of zone of contact were distinguished, three of which are poorly studied by drilling and one zone (Predeniseyskaya) is in the Paleozoic oil and gas complex.

scholarly journals Calculation of Pore Throat Radius Percentiles (25, 50 & 75) From Porosity and/or Permeability: Algyo Oil and Gas Field, Hungary

2021 ◽  
Vol 906 (1) ◽  
pp. 012004
Author(s):  
Nahla A. El Sayed ◽  
El sayed Abdel Moktader A.
Keyword(s):  
Size Distribution ◽  
Oil And Gas ◽  
Reservoir Characterization ◽  
Size Analysis ◽  
Pore Throat ◽  
Throat Radius ◽  
Gas Field ◽  
Reservoir Rocks ◽  
Oil And Gas Field ◽  
Porosity And Permeability

Abstract Pore throat size distribution of reservoir rocks has a great importance in hydrocarbon migration and entrapment. It is used for study permeability barriers, reservoir characterization and stratigraphic traps. In the present study 51 core samples obtained from Algyo oil and gas field were conducted to MICP laboratory technique to study pore throat size distribution. The inclusive graphical measures of gain size analysis were borrowed for pore throat size examination. Various pore throat radius percentiles such as 25,50 and 75 were calculated and related to both rock porosity and permeability. The obtained models were robust and reliable to use for pore throat radius percentiles (25,50 and 75) calculation. One of these models which is predicting the 50 percentiles was verified. It shows reliable coefficients of correlation (R2 = 0.77 and 0.79) as it is estimated from permeability and porosity, respectively.

The Current Situation and Prospects of Development of Low Permeability Oil Reservoir

2013 ◽  
Vol 734-737 ◽  
pp. 1286-1289 ◽  
Author(s):  
Lin Cong ◽  
Wen Long Li ◽  
Jing Chao Lei ◽  
Ru Bin Li
Keyword(s):  
Research Methods ◽  
Oil And Gas ◽  
Low Permeability ◽  
Oil Reservoir ◽  
Oil Exploration ◽  
Gas Field ◽  
Oil And Gas Field ◽  
Low Permeability Reservoirs ◽  
Technical Measures ◽  
Exploration And Development

Internationally the research of low permeability oil reservoir is a difficult point in the exploration and development of oil and gas field. This thesis, based on the research methods of low permeability reservoirs at home and abroad, summaries several major problems encountered in the process of low permeability oil exploration and development under the current technical conditions as well as the corresponding, but more effective technical measures that need to be constantly improved. And that exploration and development of low permeability of the reservoir will be the main battle field for some time in the future of oil exploration and development.

CSAMT investigation with a new kind of controlled-source acquisition equipment at Chinese southwestern oil and gas field

2015 ◽  
Author(s):  
Xiaodong Luan ◽  
Qingyun Di ◽  
Zhiguo An ◽  
Cheng Xu ◽  
Xianxiang Wang ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Gas Field ◽  
Controlled Source ◽  
Oil And Gas Field
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