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1. (WO2017155548) FRACTURE NETWORK FLUID FLOW SIMULATION WITH ENHANCED FLUID-SOLID INTERACTION FORCE DETERMINATION

Pub. No.:    WO/2017/155548    International Application No.:    PCT/US2016/022147
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sat Mar 12 00:59:59 CET 2016
IPC: G06F 17/50
G06F 19/00
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: SHETTY, Dinesh, Ananda
LIN, Avi
Title: FRACTURE NETWORK FLUID FLOW SIMULATION WITH ENHANCED FLUID-SOLID INTERACTION FORCE DETERMINATION
Abstract:
An illustrative hydraulic fracturing flow simulation method includes: identifying a network of fractures within a formation rock matrix; modeling each fracture in the network as fluid flow path having discrete points at which a fluid pressure is determined; representing the rock matrix with discrete nodes at which a fluid-solid interaction force is determined, each said discrete node being associated with multiple discrete points along a fluid flow path; deriving the fluid-solid interaction force for each node from the fluid pressure at the associated discrete points; estimating an extent of fracture propagation based in part on the fluid-solid interaction forces; and displaying a visual representation of the fracture propagation extent. The deriving includes: obtaining an analytic integral of the fluid pressure as modified by a weighting function for each interval between adjacent ones of the associated discrete points; evaluating the analytic integrals for each interval to obtain contributions; and summing the contributions.