Abstract

ARAUJO-GUERRERO, Edson Felipe; MORALES-MONSALVE, Cristhian Bernardo; ALZATE-ESPINOSA, Guillermo Arturo  and  ARBELAEZ-LONDONO, Alejandra. Numerical model for predicting and evaluating sand production in weakly consolidated reservoirs. Dyna rev.fac.nac.minas [online]. 2022, vol.89, n.220, pp.54-63.  Epub Sep 12, 2022. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v89n220.97093.

Sand production is a common phenomenon in oil and gas reservoirs, which occurs when reservoir fluids exert a sufficient drag force on reservoir rocks to erode the matrix. Numerical models for sand production have been used to understand the sanding mechanisms and forecast sand-production potential of formations to design well completion, optimize production, and prevent setbacks in future operations. This paper presents a mathematical model for defining the conditions of sanding onset as well as to predict and quantify the sand rate. We also introduce fluid-flow coupling and a geomechanical and sand-production model. By using the proposed model and a set of experimental data, sanding-related variables are analyzed, and a matching process for the simulated results and forecast analysis are performed. The results show that elastoplastic constitutive models are indispensable, and a clear relationship exists between the sanding and plastic strains.

Keywords : geomechanics; sanding; numerical simulation; elastoplasticity; mathematical modeling.

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