Print Email Facebook Twitter Investigating Effects of Heterogeneity and Fracture Distribution on Two-Phase Flow in Fractured Reservoir with adaptive time strategy Title Investigating Effects of Heterogeneity and Fracture Distribution on Two-Phase Flow in Fractured Reservoir with adaptive time strategy Author Wang, Lu Yu (The Hong Kong Polytechnic University; GeoRessources Lab) Chen, Wei Zhong (Chinese Academy of Sciences) Zhang, Yan Jun (College of Petroleum Engineering; Xi'an Shiyou University) Zhang, Xiao Dong (GeoRessources Lab) Vuik, Cornelis (TU Delft Delft Institute of Applied Mathematics) Date 2023 Abstract Modeling of fluid flow in porous media is a pillar in geoscience applications. Previous studies have revealed that heterogeneity and fracture distribution have considerable influence on fluid flow. In this work, a numerical investigation of two-phase flow in heterogeneous fractured reservoir is presented. First, the discrete fracture model is implemented based on a hybrid-dimensional modeling approach, and an equivalent continuum approach is integrated in the model to reduce computational cost. A multilevel adaptive strategy is devised to improve the numerical robustness and efficiency. It allows up to 4-levels adaption, where the adaptive factors can be modified flexibly. Then, numerical tests are conducted to verify the the proposed method and to evaluate its performance. Different adaptive strategies with 3-levels, 4-levels and fixed time schemes are analyzed to evaluate the computational cost and convergence history. These evaluations demonstrate the merits of this method compared to the classical method. Later, the heterogeneity in permeability field, as well as initial saturation, is modeled in a layer model, where the effect of layer angle and permeability on fluid flow is investigated. A porous medium containing multiple length fractures with different distributions is simulated. The fine-scale fractures are upscaled based on the equivalent approach, while the large-scale fractures are retained. The conductivity of the rock matrix is enhanced by the upscaled fine-scale fractures. The difference of hydraulic property between homogeneous and heterogeneous situations is analyzed. It reveals that the heterogeneity may influence fluid flow and production, while these impacts are also related to fracture distribution and permeability. Subject Fracture distributionFractured porous mediaHeterogeneityMultilevel adaptive schemeTwo-phase flow To reference this document use: http://resolver.tudelft.nl/uuid:fe4c27ff-85cb-4084-8dfb-476fa7117f16 DOI https://doi.org/10.1007/s11242-022-01850-z Embargo date 2023-04-03 ISSN 0169-3913 Source Transport in Porous Media, 149 (1), 175-203 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Lu Yu Wang, Wei Zhong Chen, Yan Jun Zhang, Xiao Dong Zhang, Cornelis Vuik Files PDF s11242_022_01850_z.pdf 4.29 MB Close viewer /islandora/object/uuid:fe4c27ff-85cb-4084-8dfb-476fa7117f16/datastream/OBJ/view