Semi-Analytical Modeling of Geological Features Based Heterogeneous Reservoirs Using the Boundary Element Method

The objective of this work is to innovatively apply the boundary element method (BEM) as a general modeling strategy deal with complicated reservoir problems, especially those related heterogeneity and fracture systems, which are common challenges encountered in practice engineering. transient flow behaviors reservoirs containing multi-scale heterogeneities enclosed by arbitrarily shaped boundaries modeled applying BEM. We demonstrate that BEM-based simulation capable complex heterogeneous robust solutions. technology beneficial making best use geological information. governing differential operator fluid within any locally homogeneous domain solved along its boundary. discretization system only made on corresponding boundaries, advantageous closely conforming reservoir’s description facilitating numerical computational efforts because no gridding needed. Theoretical solutions, terms pressure rate responses, validated exemplified for various reservoir–well including naturally fractured either non-crossing fractures or crossing fractures; fully compartmentalized reservoirs; multi-stage, fractured, horizontal wells stimulated volumes (SRVs) around each stage fracture, etc. A challenging case study network examined. This demonstrates significance adapting BEM due flexibility heterogeneity, analytical solution accuracy, high computing efficiency, reducing technical gap between engineering capacity.