POSSIBILITIES OF DETERMINING THE TYPE OF WETTABILITY OF THE COLLECTORS BY LOGGING DATA WHEN OPTIMIZING THE SYSTEM OF FLOODING OF OIL RESERVOIRS

Autor: Sergey V. Galkin, Igor Yu. Kolychev, Vladimir A. Rakintsev
Jazyk: ruština
Rok vydání: 2022
Předmět:
Zdroj: Известия Томского политехнического университета: Инжиниринг георесурсов, Vol 333, Iss 1, Pp 34-44 (2022)
Druh dokumentu: article
ISSN: 24131830
2500-1019
2413-1830
DOI: 10.18799/24131830/2022/1/3225
Popis: The relevance. The wettability of oil-saturated reservoirs significantly affects the technological features of the development of production facilities, primarily the efficiency of waterflooding of oil reservoirs. Possibilities of determining the wettability of reservoirs based on the data of geophysical studies of wells make it possible to take this indicator into account in geological and technological modeling of the development of oil fields, including when optimizing waterflooding of oil reservoirs. This problem was solved for the conditions of terrigenous oil-saturated reservoirs, for which it is based on the integration of reservoir porosity, lateral electrical logging and micro-lateral logging. The publication presents the results and analysis of the dynamics of injectivity of injection wells in the conditions of the development of bituminous, hydrophobized and hydrophilic reservoirs. For areas with low injectivity of wells, geological and technical measures were proposed to optimize the waterflooding system for oil reservoirs. Object: oil-saturated reservoirs of the Visean oil deposits of the Solikamsk depression (Perm region). Method: development of a methodology and determination of the type of wettability and the degree of bitumization of terrigenous reservoirs based on the data of gamma-ray logging, lateral electric logging and micro-side logging; analysis of the dynamics of injectivity of injection wells for various identified types of wettability. Results. Based on the developed methodology, the authors have obtained zoning schemes for development of hydrophobization and bituminization of oil-saturated reservoirs for the Tl-Bb object of the Unvinskoe field. The analysis of the dynamics of the operation of injection wells for the conditions of a bituminous, hydrophobized and hydrophilic geological section is carried out. The schemes of zoning of development of hydrophobization and bitumization processes of reservoirs, which are associated with areas of decreased injectivity of injection wells, were constructed. Geological and technical measures are proposed to optimize the waterflooding system for oil reservoirs in hydrophobic-bituminous reservoirs.
Databáze: Directory of Open Access Journals
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