Methods of preventing the flow-back of particulates deposited in subterranean formations
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United States of America Patent
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Apr 12, 2005
Grant Date -
Jan 22, 2004
app pub date -
Jul 19, 2002
filing date -
Jul 19, 2002
priority date (Note) -
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Abstract
Improved methods of preventing the flow-back of particulates deposited in subterranean formations with produced formation fluids are provided. The methods include extruding or injecting a solution or mixture of a particulate solid polymer through a plurality of small diameter ports into an aqueous carrier fluid containing suspended particulate material whereby polymer fibers and strands are formed in the carrier fluid. The polymer fibers and strands mix with the particulate material suspended in the carrier fluid as the carrier fluid is pumped into the subterranean formation. The mixture of the particulate material and the polymer fibers and strands is deposited in the subterranean formation so that the mixture forms at least one permeable pack that prevents the production of formation fines with fluids produced from the formation and prevents the flow-back of the deposited particulate solids, fibers or strands.
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