A 2.5D Reactive Transport Model for Fracture Alteration Simulation

被引:85
作者
Deng, Hang [1 ]
Molins, Sergi [1 ]
Steefel, Carl [1 ]
DePaolo, Donald [1 ,2 ]
Voltolini, Marco [1 ]
Yang, Li [1 ]
Ajo-Franklin, Jonathan [1 ]
机构
[1] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Earth & Planetary Sci, Berkeley, CA 94720 USA
关键词
DIFFUSION-COEFFICIENTS; DISSOLUTION KINETICS; GEOLOGIC STORAGE; PORE-SCALE; FLOW; CALCITE; RATES; 25-DEGREES-C; BRINE; ROCKS;
D O I
10.1021/acs.est.6b02184
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Understanding fracture alteration resulting from geochemical reactions is critical in predicting fluid migration in the subsurface and is relevant to multiple environmental challenges. Here, we present a novel 2.5D continuum reactive transport model that captures and predicts the spatial pattern of fracture aperture change and the development of an altered layer in the near-fracture region. The model considers permeability heterogeneity in the fracture plane and updates fracture apertures and flow fields based on local reactions. It tracks the reaction front of each mineral phase and calculates the thickness of the altered layer. Given this treatment, the model is able to account for the diffusion limitation on reaction rates associated with the altered layer. The model results are in good agreement with an experimental study in which a CO2-acidified brine was injected into a fracture in the Duperow Dolomite, causing dissolution of calcite and dolomite that result in the formation of a preferential flow channel and an altered layer. With an effective diffusion coefficient consistent with the experimentally observed porosity of the altered layer, the model captures the progressive decrease in the dissolution rate of the fast-reacting mineral in the altered layer.
引用
收藏
页码:7564 / 7571
页数:8
相关论文
共 44 条
[1]  
Ajo-Franklin J., 2016, CAPROCK INT IN PRESS
[2]   Changes in seal capacity of fractured claystone caprocks induced by dissolved and gaseous CO2 seepage [J].
Andreani, M. ;
Gouze, P. ;
Luquot, L. ;
Jouanna, P. .
GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (14)
[3]   An approach to defining tortuosity and cementation factor in carbonate reservoir rocks [J].
Azar, Javid Hassanzadeh ;
Javaherlan, Abdolrahim ;
Pishvaie, Mahmoud Reza ;
Nabi-Bidhendi, Majid .
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2008, 60 (02) :125-131
[4]  
Berkowitz B., 2003, WATER RESOUR RES, V39, P14
[5]   INVESTIGATIONS INTO THE FACTORS INFLUENCING LONG-RANGE MATRIX DIFFUSION RATES AND PORE-SPACE ACCESSIBILITY AT DEPTH IN GRANITE [J].
BRADBURY, MH ;
GREEN, A .
JOURNAL OF HYDROLOGY, 1986, 89 (1-2) :123-139
[6]   HETEROGENEOUS KINETICS AND DIFFUSION BOUNDARY-LAYERS - THE EXAMPLE OF REACTION IN A FRACTURE [J].
CASEY, WH .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B8) :8007-8013
[7]   Pore-scale study of dissolution-induced changes in hydrologic properties of rocks with binary minerals [J].
Chen, Li ;
Kang, Qinjun ;
Viswanathan, Hari S. ;
Tao, Wen-Quan .
WATER RESOURCES RESEARCH, 2014, 50 (12) :9343-9365
[8]   Determination of mineral dissolution regimes using flow-through time-resolved analysis (FT-TRA) and numerical simulation [J].
De Baere, Bart ;
Molins, Sergi ;
Mayer, K. Ulrich ;
Francois, Roger .
CHEMICAL GEOLOGY, 2016, 430 :1-12
[9]   Alterations of Fractures in Carbonate Rocks by CO2-Acidified Brines [J].
Deng, Hang ;
Fitts, Jeffrey P. ;
Crandall, Dustin ;
McIntyre, Dustin ;
Peters, Catherine A. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2015, 49 (16) :10226-10234
[10]   Modifications of Carbonate Fracture Hydrodynamic Properties by CO2-Acidified Brine Flow [J].
Deng, Hang ;
Ellis, Brian R. ;
Peters, Catherine A. ;
Fitts, Jeffrey P. ;
Crandall, Dustin ;
Bromhal, Grant S. .
ENERGY & FUELS, 2013, 27 (08) :4221-4231