Implementing stress-sensitivity in naturally fractured reservoir flow simulation can be achieved through the use of “multipliers” that serve to modify, for example, fracture network pore volume as a function of changing reservoir pressure and fracture network transmissibility as a function of changing pore volume. We have used parametric, stress-sensitive, discrete fracture network modeling, combined with a stiffness scaling rule as determined from hydromechanical laboratory testing of single natural fractures, to develop simple predictive relationships for estimating multiplier magnitudes. For a wide range of fracture network intensities and aperture size distributions we observe that, to first order, pore volume- and transmissibility-multipliers are surprisingly predictable from basic knowledge of supplementary reservoir stress and geometric fracture properties information. Single-producer flow simulation box models are subsequently employed to illustrate the impact of varying multiplier magnitudes on incremental oil recovery, relative to an “incompressible fracture network” base case condition.
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2nd International Discrete Fracture Network Engineering Conference
June 20–22, 2018
Seattle, Washington, USA
Predicting Pore Volume and Transmissibility Multipliers for Simulating Geomechanical Effects in Naturally Fractured Reservoirs Using Stress-sensitive Discrete Fracture Network Modeling
Brian Crawford;
Brian Crawford
ExxonMobil Upstream Research Company
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Janelle Homburg;
Janelle Homburg
ExxonMobil Upstream Research Company
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F. Fernandez-Ibanez;
F. Fernandez-Ibanez
ExxonMobil Upstream Research Company
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R. D. Myers;
R. D. Myers
ExxonMobil Upstream Research Company
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B. Gao
B. Gao
ExxonMobil Upstream Research Company
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Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, Seattle, Washington, USA, June 2018.
Paper Number:
ARMA-DFNE-18-0429
Published:
June 20 2018
Citation
Crawford, Brian, Homburg, Janelle, Fernandez-Ibanez, F., Myers, R. D., and B. Gao. "Predicting Pore Volume and Transmissibility Multipliers for Simulating Geomechanical Effects in Naturally Fractured Reservoirs Using Stress-sensitive Discrete Fracture Network Modeling." Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, Seattle, Washington, USA, June 2018.
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