Sensitivity studies on fracture network variables for modelling carbon dioxide storage and enhanced recovery in the Chattanooga Shale Formation
by Cigdem Keles; Nino Samuel Ripepi
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 12, No. 3, 2016

Abstract: Horizontal drilling and multi-stage stimulation technologies make enhance methane production and carbon dioxide (CO₂) sequestration feasible for shale reservoirs. In March 2014, approximately 462 tonnes of CO₂ was injected into horizontal well in Morgan County, Tennessee over a 13-day period in order to examine the injectivity and the adsorption of CO₂. The horizontal well was hydraulically fractured and stimulated in four stages. Due to the lack of microseismic data available for the well, the volume of the stimulated reservoir was unknown. Sensitivity analysis by using numerical modelling can help to determine the size of the stimulated reservoir volume (SRV). In this paper, grid refinement in fracture network, fracture spacing and fracture porosity, fracture network permeability, and fracture network volume were changed to identify the most important parameters for matching the gas and the bottom-hole pressure of the wellbore. [Received: January 7, 2015; Accepted: February 13, 2015]

Online publication date: Wed, 01-Jun-2016

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