Research Papers: Underground Injection and Storage

Feasibility Investigation and Modeling Analysis of CO2 Sequestration in Arbuckle Formation Utilizing Salt Water Disposal Wells

[+] Author and Article Information
Jamal Daneshfar, Faruk Civan

University of Oklahoma, Mewbourne School of Petroleum and Geological Engineering, Sarkeys Energy Center, 100 East Boyd Street, Norman, OK 73019-1003

Richard G. Hughes

Louisiana State University, Craft & Hawkins Department of Petroleum Engineering, Baton Rouge, LA 70803

J. Energy Resour. Technol 131(2), 023301 (May 20, 2009) (10 pages) doi:10.1115/1.3124115 History: Received August 15, 2007; Revised March 24, 2009; Published May 20, 2009

The rate of CO2 production in many states, primarily from coal-fired power plants, is such that it only takes a few years to fill up any depleted oil and gas reservoirs. In order to reduce the level of CO2 in the atmosphere and to minimize the cost of sequestration, the injection of CO2 into aquifers utilizing disposal wells has been targeted. In this paper, an analysis of one particular case, namely, the Arbuckle formation in Oklahoma, was carried out to demonstrate its feasibility for CO2 sequestration. First, a general review for CO2 sequestration into aquifers utilizing existing disposal wells is presented. The limiting criteria for CO2 sequestration in terms of the geology of the aquifer, lithology of the host rock, cost of operation, impact on reservoir properties, depth of the completed interval to maintain supercritical conditions for CO2, injection pressure and rate to minimize gravity segregation, mobility ratio to prevent viscous fingering, and chemical interaction of aqueous and solid phases are discussed. Then, the existence of residual oil in the aquifer and its effect on reaction chemistry concerning the potential CO2 sequestration applications in the Arbuckle formation are evaluated. This investigation was conducted by means of simulation of the prevailing processes. The cutoff points from dissolution to precipitation for each constituent in terms of different CO2 injection rates were obtained by utilizing the simulation models GEM-GHG and PHREEQC and were supported by a database of 150 disposal wells from which 25 wells were completed in the Arbuckle formation. We critically evaluate the current state of knowledge, identify areas needing research, and offer practical approaches for the evaluation of potential CO2 sequestration sites using commercial disposal wells.

Copyright © 2009 by American Society of Mechanical Engineers
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Figure 1

CO2 emission trend from power plants in Oklahoma

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Figure 2

Locations of brine (13)/disposal wells (14) and power plants (15) in Oklahoma (created by ARC VIEW GIS version 8.2)

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Figure 3

Ion concentration distributions before CO2 injection

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Figure 4

Average ion concentrations after CO2 reaction (closed system)

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Figure 5

Grid block system (60×1×30) in aquifer and simulation cases

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Figure 6

Relative permeability (based on Stone’s second model (19))

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Figure 7

Pressure variations at the injection site (layer 15): all cases

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Figure 8

CO2 molality for different cases

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Figure 9

The water mass density in the upper and lower layers

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Figure 10

Mineral variations for different cases



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