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Reservoir Simulation Of Unconventional Gas Reservoirs

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Department of Chemical and Petroleum Engineering, University of Calgary, Alberta, Canada
GLGY 655 – Unconventional Gas reservoirs Characterization
Paper Title: RESERVOIR SIMULATION OF UNCONVENTIONAL GAS RESERVOIRS:
(A Review)
Author: Benard Okuidegbe (UCID: 10142489)

ABSTRACT
Abundant amounts of resources are left to be untapped from unconventional reservoirs. (Arthur 2008) observes that about 500TCF of natural gas are contained in unconventional reservoirs. Unconventional gas reservoirs account for approximately one-third of the US natural gas production (Rafiqul, 2014). Over the years, reservoir engineers have relied on numerical simulators as a tool for modeling and predicting hydrocarbon recoveries (recovery factor) from reservoirs, which translates into the economic viablility (or not) of a petroleum asset. The accurate modeling of reservoir fluid-flow using simulators depend largely on the description of actual rock/fluid interactions that occur within the reservoir. Unlike for the case of conventional reservoir systems, the flow physics for unconventional reservoirs (Tight gas, Coal-bed methane, Shale reservoirs) are complicated by their unique features which include: extremely low permeability, complex fracture networks, non-darcy flow, Klinkenberg effects, adsorption/desorption effects and rock deformation due to variations in effective stress in the reservoirs. Accouting for all of these features into numerical
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