Genesis and Geological Structure of Oil Pools in the Sediments of Abnormal Bazhenov Formation Section

2016 ◽  
Author(s):  
V. Grishkevich ◽  
V.K. Kasatkin ◽  
S. Lagutina ◽  
E. Panina
Keyword(s):  
Geological Structure ◽  
Bazhenov Formation ◽  
Formation Section

Distribution of organic matter in Bazhenov high-carbon formation

2019 ◽  
pp. 46-56
Author(s):  
M. S. Topchii ◽  
N. V. Pronina ◽  
A. G. Kalmykov ◽  
G. A. Kalmykov ◽  
M. M. Fomina ◽  
...  
Keyword(s):  
Organic Matter ◽  
Geological Structure ◽  
Heterogeneous Structure ◽  
Carbon Formation ◽  
High Carbon ◽  
Mixed Composition ◽  
Shale Formations ◽  
Bazhenov Formation ◽  
Geological Features ◽  
Micro Level

One of the most famous and promising shale formations in Russia is the Bazhenov formation. The ambiguity of ideas about its geological features, caused by the complex, heterogeneous structure of the strata, attracts the attention of many researchers. In this work, the Bazhenov formation is singled out in conjunction with its stratigraphic counterparts in the Bazhenov high-carbon formation (BVCHF). In this were considered the main characteristics of its allotment and distribution over the area, as well as the geological structure. Being an unconventional reservoir of hydrocarbons, BVCHF has properties of a petroleum-bearing rock, one of the main characteristics of which is organic matter, its type and maturity. The paper presents the results of the study of organic matter by various methods at the micro level, as well as their integration with larger-scale studies. The need for detailed consideration of the organic matter of the BVCHF is justified by the fact that it has a mixed composition and, as a consequence, a different degree of transformation and spatial distribution.

scholarly journals Section types and oil prospects of the Bazhenov Formation in the Nadym-Ob interfluve

Georesursy ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 2-11
Author(s):  
Mikhail A. Fomin ◽  
Rashid M. Saitov
Keyword(s):  
Cost Effective ◽  
Geological Structure ◽  
Void Space ◽  
Bazhenov Formation ◽  
Oil Reserves ◽  
Deep Wells ◽  
Wide Range ◽  
Oil Source ◽  
Lithological Composition ◽  
Nenets Autonomous

The article presents the results of studying the geological structure of the Bazhenov Formation in the Nadym-Ob interfluve of Western Siberia with the aim of predicting the oil content of this black shale stratum. As a result of interpretation of a wide range of well logging represented by electric, radioactive and acoustic logging, with subsequent matching of these results with paleontological definitions of micro- and macrofauna, the distribution of the Salym, Nizhnevartovsky and Tarkosalinsky types of sections of the Bazhenov Formation was clarified, transitional areas between them were identified. It has been established that the Tarkosalinsky type is more widespread in the western direction than was shown earlier and is also distinguished in the Vengayakhinskaya, Yaraynerskaya and other areas. The Nizhnevartovsky type, on the contrary, has a narrower distribution and stands out directly within the same name arc and to the south by the Variegasky-Tagrinsky megahigh. On the basis of geological, geochemical, geophysical criteria and the results of an inflow test in deep wells, a map of the oil potential prospects of the “classical” sections of the Bazhenov Formation has been compiled. Regional prerequisites (high catagenesis of organic matter, significant modern concentrations of organic carbon, etc.) for the discovery of industrial accumulations of oil in the Bazhenov Formation in the southern regions of the Yamalo-Nenets Autonomous Area are identified. The results of the test for the inflow of the Bazhenov Formation in this area in the 70–90s XX century were analyzed; repeated, interval testing of these deposits using modern methods of stimulation of the inflow is recommended. The necessity of laboratory lithological, petrophysical, geochemical study of the core of the Bazhenov Formation in the southern part of the Yamalo-Nenets Autonomous Area is substantiated with the aim of determining its lithological composition, identifying oil source and oil productive intervals, studying the reservoir structure and the nature of saturation of its void space, developing recommendations for calculating oil reserves and creating technology for its cost-effective production.

Marking of productive intervals in Bazhenov formation based on a limited set of well testing

2020 ◽  
pp. 51-64
Author(s):  
G. A. Smolyakov ◽  
V. F. Grishkevich ◽  
N. V. Gilmanova ◽  
D. A. Laminskii ◽  
A. V. Sivkova
Keyword(s):  
Geological Structure ◽  
Minimum Amount ◽  
Well Testing ◽  
Bazhenov Formation ◽  
The Core ◽  
Available Information ◽  
Sedimentation Processes

The article is devoted to features of the geological structure of Bazhenov formation. The rocks of Bazhenov formation were dissected according to the data of a limited complex of well testing. The presented method is based on qualitative signs of changes in the registered curves, which have a pronounced character of changing values comparable to changes in the spectrometric composition of rocks, paleontological characteristics, the facies situation of sedimentation and secondary post-sedimentation processes occurring in Bazhenov deposits. During the analysis and development of the algorithm, the basic marking horizons were identified, which took into account the main lithological and metamorphic features of the formation's deposits. The presented method of marking differs slightly from the usual lithotypisation of a well section. Its simplicity makes sense to use the minimum amount of available information with the possibility of selecting and testing the most productive intervals of the formation. Successfully conducted testing of algorithms works in two deposits of the different genesis of the sediments, the data obtained are compared are presented with the detailed lithological characteristics selected by the core and the tested wells.

scholarly journals Typification of the section of Bazhenov formation through the integration of geological, geochemical and geophysical data

2020 ◽  
pp. 56-66
Author(s):  
G. A. Smolyakov ◽  
V. F. Grishkevich ◽  
N. Yu. Moskalenko ◽  
N. V. Gilmanova
Keyword(s):  
Geological Structure ◽  
Geophysical Data ◽  
Spectral Studies ◽  
Well Testing ◽  
Well Performance ◽  
Specific Data ◽  
Bazhenov Formation

The article is devoted to features of the geological structure of Bazhenov formation. Gross spectral studies helped to study in detail the rocks composing the Bazhenov formation. In addition, specific data and publications characterizing paleontological and facies conditions of depositional basin sedimentation were considered. The results of the studies show only the organogenic nature of the origin of the lithological differences of Bazhenov deposits, confirm the need to change the algorithms for the interpretation of geophysical studies of wells. In the article, we reveal the regularities of changes in the recorded well values with the composition of rocks and their attachment to certain stratigraphic floors and the corresponding facies conditions. Also, we describe the concept of lithological dismemberment of Bazhenov formation by well testing and well performance.

scholarly journals Perspectives of the oil potential of the Bazhenov formation within the Kogalym top of the Surgut arch

2021 ◽  
Vol 266 ◽  
pp. 01003
Author(s):  
D.A. Spiridonov
Keyword(s):  
Mineral Composition ◽  
Geological Structure ◽  
Bazhenov Formation

Based on the analysis of the geological structure of the territory, mineral composition of rocks and bedding conditions, the most promising areas for the development of the Bazhenov formation were localized.

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