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    Effect of Water Blocking Damage on Flow Efficiency and Productivity in Tight Gas Reservoirs

    Access Status
    Fulltext not available
    Authors
    Bahrami, Hassan
    Rezaee, M. Reza
    Nazhat, D.
    Ostojic, J.
    Clennel, B.
    Jamili, A.
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Bahrami, Hassan and Rezaee, M. Reza and Nazhat, Delair and Ostojic, Jakov and Clennel, Benn and Jamili, Ahmad. 2011. Effect of Water Blocking Damage on Flow Efficiency and Productivity in Tight Gas Reservoirs, SPE European Formation Damage Conference, Mar 27 2011. Oklahoma City, USA: Society of Petroleum Engineers (SPE).
    Source Title
    SPE Production and Operations Symposium
    Source Conference
    SPE European Formation Damage Conference
    DOI
    10.2118/142283-MS
    School
    Department of Petroleum Engineering
    Remarks

    Copyright © 2011 Society of Petroleum Engineers (SPE)

    URI
    http://hdl.handle.net/20.500.11937/6901
    Collection
    • Curtin Research Publications
    Abstract

    Tight gas reservoirs normally have production problems due to very low matrix permeability and significant damage during well drilling, completion, stimulation and production. Therefore, they might not flow gas at optimum rates without advanced production improvement techniques. The main damage mechanisms and the factors that have significant influence on total skin factor in tight gas reservoirs include mechanical damage to formation rock, water blocking, relative permeability reduction around wellbore as a result of filtrate invasion and liquid leak-off into the formation during fracturing operations. Drilling and fracturing fluids invasion mostly occurs through permeable zones or natural fractures and might also lead to serious permeability reduction in the rock matrix that surrounds the wellbore, natural fractures, or hydraulic fracture wings.This study represents evaluation of water blocking damage in tight gas formations, and the influence on core flow efficiency and well productivity. Core scale reservoir simulations were carried out based on a typical Western Australia tight gas reservoir in order to numerically model liquid invasion during overbalanced, balanced and underbalanced drilling, and the effect on gas production in clean-up period. The simulation results describe how water blocking reduces near wellbore permeability and affects well productivity and gas recovery from tight gas reservoirs.

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      Tight gas reservoirs normally have production problems due to very low matrix permeability and significant damage during well drilling, completion, stimulation and production. Therefore, they may not flow gas at optimum ...
    • Water blocking damage in hydraulically fractured tight sand gas reservoirs: An example from Perth Basin, Western Australia
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      Tight gas reservoirs normally have production problems due to very low matrix permeability and different damage mechanisms during drilling, completion and stimulation operations. Therefore they may not produce gas at ...
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