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Effects of acid dissolution capacity on the propagation of an acid-dissolution front in carbonate rocks.
- Source :
-
Computers & Geosciences . May2017, Vol. 102, p109-115. 7p. - Publication Year :
- 2017
-
Abstract
- Acid dissolution capability plays a considerable role in controlling the propagation of an acid-dissolution front in the carbonate rocks that are saturated by pore fluids. This capability can be represented by a dimensionless number, known as the acid dissolution capability number, by which we mean the quotient of the volume of an acid-dissolved carbonate rock divided by that of the acid itself. This paper aims primarily to investigate why and how the acid dissolution capacity can affect the behaviors of the acid-dissolution front propagation in the carbonate rocks that are saturated by pore fluids. If the acid dissolution capacity number is a nonzero finite number, as in a general case, then the computational simulation method needs to be employed to get numerical solutions for the acid-dissolution system. The relevant computational simulation results have demonstrated that: (1) with an increase in the value of the Zhao number (namely another dimensionless number), which is used to denote the dynamic characteristics of an acid-dissolution system, the acid-dissolution front becomes more unstable in the corresponding supercritical acid-dissolution system. (2) When the acid dissolution capacity number is small enough, the propagating speed of a planar acid-dissolution front in the corresponding subcritical acid-dissolution system is linearly dependent on the acid dissolution capacity number, indicating that the smaller the acid dissolution capacity, the slower the propagating speed of a planar acid-dissolution front in the corresponding subcritical acid-dissolution system. (3) With a decrease in the acid dissolution capacity number, the acid-dissolution front can exhibit more unstable behavior in the corresponding supercritical acid-dissolution system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00983004
- Volume :
- 102
- Database :
- Academic Search Index
- Journal :
- Computers & Geosciences
- Publication Type :
- Academic Journal
- Accession number :
- 122009905
- Full Text :
- https://doi.org/10.1016/j.cageo.2017.02.013