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Effect of Effective Pressure on the Permeability of Rocks Based on Well Testing Results
- Source :
- Energies, Vol 14, Iss 2306, p 2306 (2021), Energies; Volume 14; Issue 8; Pages: 2306
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- During the development of oil and gas fields, the permeability of the reservoirs decreases due to a decrease in reservoir pressure and an increase in effective pressure, as a result of which significant reserves of oil and gas remain in the reservoir. To predict the rate of decrease in oil production rates during field development and to respond quickly, it is necessary to know the law of permeability decrease with an increase in effective pressure. Existing methods for describing the change in the permeability of rocks were analyzed in the paper. Numerical analysis of the results of core studies from previously published papers and the results of field well testing on the examples of the north Perm region oil fields showed that in both cases, regardless of the type of rock and the type of reservoir, the change in permeability can be described by the same equations (exponential and power-law). Obtained equations can be used to predict changes in the permeability of terrigenous reservoirs of the north Perm region oil fields. At the same time, according to the results of well testing, an intensive decrease in permeability is observed with an increase in effective pressure. Analysis of the nature of permeability changes using the Two-Part Hooke’s Model showed that significant irreversible deformations are currently taking place in the formations of the oil fields under consideration. Predicting the change in permeability from effective pressure can allow to optimize the development of oil deposits.
- Subjects :
- Technology
Control and Optimization
010504 meteorology & atmospheric sciences
Field (physics)
Energy Engineering and Power Technology
010502 geochemistry & geophysics
01 natural sciences
permeability
effective pressure law
well testing
Electrical and Electronic Engineering
Engineering (miscellaneous)
0105 earth and related environmental sciences
Petroleum engineering
Renewable Energy, Sustainability and the Environment
business.industry
Fossil fuel
Field development
Building and Construction
Permeability (earth sciences)
Oil production
Reservoir pressure
business
Geology
Energy (miscellaneous)
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Volume :
- 14
- Issue :
- 2306
- Database :
- OpenAIRE
- Journal :
- Energies
- Accession number :
- edsair.doi.dedup.....cecb052ca16fdfe7978458574abb52ac