KFU. Card publication. Fracture density in the Bashkirian deposits of the eastern side of the Melekess depression.

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FRACTURE DENSITY IN THE BASHKIRIAN DEPOSITS OF THE EASTERN SIDE OF THE MELEKESS DEPRESSION.

Form of presentation

Conference proceedings in Russian journals and collections

Year of publication

2024

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Authors, employees of KFU

Kosarev Viktor Evgenevich, author

Kosareva Lina Raisovna, author

Bibliographic description in the original language

Kosarev V. E., Kosareva L. R. Fracture density in the Bashkirian deposits of the eastern side of the Melekess depression. Abstract volume of Kazan Golovkinsky Stratigraphic Meeting 2024 “Modern Stratigraphy: methods and applications” and Eighth All-Russian Conference “Upper Palaeozoic of Russia”, evoted to the 190th anniversary of the Nikolai A. Golovkinsky birth (Kazan, October 28–30, 2024), p. 24

Annotation

Abstract volume of Kazan Golovkinsky Stratigraphic Meeting 2024 “Modern Stratigraphy: methods and applications” and Eighth All-Russian Conference “Upper Palaeozoic of Russia”, evoted to the 190th anniversary of the Nikolai A. Golovkinsky birth (Kazan, October 28–30, 2024)

Keywords

Bashkirian deposits, Melekess depression, fracture porosity, limestone

The name of the journal

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=307950&p_lang=2

Resource files

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F_Golovkinsky_2024_Abstract_Volume__1_.pdf	1,63	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kosarev Viktor Evgenevich	ru_RU
dc.contributor.author	Kosareva Lina Raisovna	ru_RU
dc.date.accessioned	2024-01-01T00:00:00Z	ru_RU
dc.date.available	2024-01-01T00:00:00Z	ru_RU
dc.date.issued	2024	ru_RU
dc.identifier.citation	Kosarev V. E., Kosareva L. R. Fracture density in the Bashkirian deposits of the eastern side of the Melekess depression. Abstract volume of Kazan Golovkinsky Stratigraphic Meeting 2024 “Modern Stratigraphy: methods and applications” and Eighth All-Russian Conference “Upper Palaeozoic of Russia”, evoted to the 190th anniversary of the Nikolai A. Golovkinsky birth (Kazan, October 28–30, 2024), p. 24	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=307950&p_lang=2	ru_RU
dc.description.abstract	Abstract volume of Kazan Golovkinsky Stratigraphic Meeting 2024 “Modern Stratigraphy: methods and applications” and Eighth All-Russian Conference “Upper Palaeozoic of Russia”, evoted to the 190th anniversary of the Nikolai A. Golovkinsky birth (Kazan, October 28–30, 2024)	ru_RU
dc.description.abstract	A presence of natural fractures in rocks is a common geological phenomenon. Rocks with fractured porosity are found almost all over the world. Fractured reservoirs are related to geological structures that differ in age, lithological composition, and burial conditions. The fracture porosity in some fields leads to increased reservoir permeability and high flow rates. Respectively, the knowledge about the fracture density and value of natural fractures porosity is an essential factor for choosing reservoir development strategy. Logging and core data from several oilfields, located on the territory of the Republic of Tatarstan (Russian Federation) were studied. The oil reservoirs, which are the main objects of development, are concentrated in the lower Mississippian and lower Pennsylvanian series. At the same time, Bashkirian deposits are one of the main carbonate sources of hydrocarbons. The deposits of the Bashkirian stage are composed mainly of limestone. Hydrocarbon reservoirs are represented by packstones and greystones. The non-reservoir rocks are composed of mudstones and wackstones. The Bashkirian deposits in the studied area has a three-membered structure. During the transition from top to bottom from the deposits of the Vereiskian horizon to the Bashkirian deposits, a porous layer of variable thickness is distinguished in the section. Beneath it there is a dense layer with an average thickness of nine meters, characterized by the presence of a large number of cracks mostly sealed with clay material. The fracture density in this part of the section reaches 15 fractures per 1 m. The middle pack is characterized by the increased porosity and is the main object of oil production. In this zone, large formations with pore, pore-cavern and pore-fracture hollow type are presented. The non-reservoir rocks in this zone are characterized by a significant number of conductive (mostly) cracks with various lengths. Permeable layers are mainly characterized by low value of the fracture‟s density (on average 3-5 fractures per 1 m). However, in some wells, permeable layers with an increased density of conductive cracks (up to 20 fractures per 1 m) were noted in the lower part of the second section. The use of the waterflooding can lead in this case to a breakthrough of water to the nearest wells. In the lower part of the section of the Bashkirian formation, an increase in rock density is observed once again. However, this section, unlike the upper part, is characterized by the presence of a significant number of conductive fractures (up to 10 fractures per 1 m). This point should be taken into account when planning waterflooding or hydraulic fracturing to prevent water breakout from the lower aquifers.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Bashkirian deposits	ru_RU
dc.subject	Melekess depression	ru_RU
dc.subject	fracture porosity	ru_RU
dc.subject	limestone	ru_RU
dc.title	Fracture density in the Bashkirian deposits of the eastern side of the Melekess depression.	ru_RU
dc.type	Conference proceedings in Russian journals and collections	ru_RU