Published 4 issues per year
ISSN Print: 2151-4798
ISSN Online: 2151-562X
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A NEW CALCULATING METHOD FOR RELATIVE PERMEABILITY OF BRANCHED PREFORMED PARTICLE GEL FLOODING IN MULTIPHASE COMPOSITE SYSTEM
ABSTRACT
Relative permeability curve of Branched-preformed particle gel (B-PPG) suspension/oil two-phase system is one of the most effective means to acquire percolation characteristics in reservoirs. Based on the Buckley–Leverett equation, a new mathematical model with rheological properties for B-PPG suspension/oil relative permeability was established. Firstly, this new model was reliable by comparison with the traditional unsteady-state model through experiments. Then, the effects of particle mesh and size distribution on relative permeability with different permeability levels were comparatively investigated. The results showed that the permeability value of the derived formula was below that of the traditional formula, regardless of displaced and displacing term. In addition, the displacement efficiency boosted with an increment of particle mesh. In terms of the decrement of residual oil saturation, the effect of particle mesh on low permeability reservoir (3.4%) was more distinct than that of high permeability reservoir (2.9%). The displacement efficiency was higher when the particle size distribution was more uneven. Besides, the effect of particle size distribution on low permeability reservoir (2.0%) was almost similar to that of high permeability reservoir (1.9%). This research not only provides important basic information for the numerical simulation, but also lays a foundation for the development of the reservoir.
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Zhou Haiyan, Davarpanah Afshin, Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study, Symmetry, 12, 7, 2020. Crossref