Methods for controlling water and sand production in subterranean wells
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United States of America Patent
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Feb 24, 2009
Grant Date -
Jan 18, 2007
app pub date -
Jul 15, 2005
filing date -
Jul 15, 2005
priority date (Note) -
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Abstract
Methods for stabilizing unconsolidated or weakly consolidated portions of a subterranean formation and controlling the production of water in those portions include introducing a consolidating agent into the subterranean formation so as to transform a portion of the subterranean formation surrounding the well bore into a consolidated region; and introducing a relative permeability modifier fluid into the subterranean formation so as to penetrate at least a portion of the consolidated region. Fracturing steps may be used to reconnect the well bore to portions of the formation (e.g., formation reservoirs) in certain embodiments. Optionally, preflush fluids, after-flush fluids, and shutting-in periods may be used as desired.
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