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Title: Material point method modeling in oil and gas reservoirs

A computer system and method of simulating the behavior of an oil and gas reservoir including changes in the margins of frangible solids. A system of equations including state equations such as momentum, and conservation laws such as mass conservation and volume fraction continuity, are defined and discretized for at least two phases in a modeled volume, one of which corresponds to frangible material. A material point model technique for numerically solving the system of discretized equations, to derive fluid flow at each of a plurality of mesh nodes in the modeled volume, and the velocity of at each of a plurality of particles representing the frangible material in the modeled volume. A time-splitting technique improves the computational efficiency of the simulation while maintaining accuracy on the deformation scale. The method can be applied to derive accurate upscaled model equations for larger volume scale simulations.
Inventors:
;
Issue Date:
OSTI Identifier:
1259454
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM) LANL
Patent Number(s):
9,378,310
Application Number:
13/649,655
Contract Number:
AC52-06NA25396
Resource Relation:
Patent File Date: 2012 Oct 11
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 58 GEOSCIENCES; 02 PETROLEUM; 03 NATURAL GAS; 04 OIL SHALES AND TAR SANDS

Other works cited in this record:

Material point method applied to multiphase flows
journal, March 2008
  • Zhang, Duan Z.; Zou, Qisu; VanderHeyden, W. Brian
  • Journal of Computational Physics, Vol. 227, Issue 6, p. 3159-3173
  • DOI: 10.1016/j.jcp.2007.11.021

The effects of mesoscale structures on the macroscopic momentum equations for two-phase flows
journal, May 2002
  • Zhang, Duan Z.; VanderHeyden, W. Brian
  • International Journal of Multiphase Flow, Vol. 28, Issue 5, p. 805-822
  • DOI: 10.1016/S0301-9322(02)00005-8

Pressure calculations in disperse and continuous multiphase flows
journal, January 2007

Ensemble phase averaged equations for multiphase flows in porous media. Part 2: A general theory
journal, July 2009

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