In acidizing operations, the acid flows selectively through large pores to create wormholes. Wormhole propagation has been studied by many experts at macroscopic scale. In this paper, the lattice Boltzmann model (LBM), which is a mesoscopic scale method, is adopted to simulate the flow, acid–rock reaction, and rock dissolution in porous media at mesoscopic scale. In this model, a new method based on nonequilibrium extrapolation is proposed to deal with the reactive boundary. On the basis of the model, extensive simulations are conducted on the propagation behavior of wormholes, and the factors influencing wormhole propagation are investigated systematically. The results show that the LBM is a reliable numerical technique to study chemical dissolution in porous media at mesoscopic scale, and that the new method of dealing with the reaction boundary performs well. The breakthrough time decreases with the increase of acid concentration, but acid concentration does not affect the ultimate dissolution pattern. As the reaction rate constant increases, shorter wormholes are created. A higher hydrogen ion diffusion coefficient will result in shorter but wider wormholes. These findings agree well with the previous experimental and theoretical analyses. This study demonstrates the mechanism of wormholing that the unstable growth of pores by the acid rock reaction makes the acid selectively flow through a few large pores which finally form wormholes.
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July 2017
Research-Article
Lattice Boltzmann Simulation of Wormhole Propagation in Carbonate Acidizing
Xinfang Ma,
Xinfang Ma
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: maxinfang@cup.edu.cn
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: maxinfang@cup.edu.cn
Search for other works by this author on:
Jianye Mou,
Jianye Mou
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: moujianye@cup.edu.cn
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: moujianye@cup.edu.cn
Search for other works by this author on:
Hun Lin,
Hun Lin
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: linhun016@aliyun.com
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: linhun016@aliyun.com
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Feng Jiang,
Feng Jiang
Anhui Special Equipment Inspection Institute,
45th, Dalian Road,
Hefei 230051, Anhui Province, China
e-mail: jiangfeng_N@163.com
45th, Dalian Road,
Hefei 230051, Anhui Province, China
e-mail: jiangfeng_N@163.com
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Xinzhe Zhao
Xinzhe Zhao
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: bsyzhaoxinzhe@163.com
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: bsyzhaoxinzhe@163.com
Search for other works by this author on:
Xinfang Ma
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: maxinfang@cup.edu.cn
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: maxinfang@cup.edu.cn
Jianye Mou
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: moujianye@cup.edu.cn
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: moujianye@cup.edu.cn
Hun Lin
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: linhun016@aliyun.com
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: linhun016@aliyun.com
Feng Jiang
Anhui Special Equipment Inspection Institute,
45th, Dalian Road,
Hefei 230051, Anhui Province, China
e-mail: jiangfeng_N@163.com
45th, Dalian Road,
Hefei 230051, Anhui Province, China
e-mail: jiangfeng_N@163.com
Kaiyu Liu
Xinzhe Zhao
College of Petroleum Engineering,
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: bsyzhaoxinzhe@163.com
China University of Petroleum,
18th, Fuxue Road, Changping District,
Beijing 102249, China
e-mail: bsyzhaoxinzhe@163.com
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 6, 2016; final manuscript received January 30, 2017; published online February 24, 2017. Assoc. Editor: Reza Sheikhi.
J. Energy Resour. Technol. Jul 2017, 139(4): 042002 (10 pages)
Published Online: February 24, 2017
Article history
Received:
September 6, 2016
Revised:
January 30, 2017
Citation
Ma, X., Mou, J., Lin, H., Jiang, F., Liu, K., and Zhao, X. (February 24, 2017). "Lattice Boltzmann Simulation of Wormhole Propagation in Carbonate Acidizing." ASME. J. Energy Resour. Technol. July 2017; 139(4): 042002. https://doi.org/10.1115/1.4035909
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