Synthetic crosslinked copolymer solutions and direct injection to subterranean oil and gas formations
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United States of America Patent
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Oct 15, 2002
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N/A
app pub date -
Feb 11, 2000
filing date -
Feb 11, 2000
priority date (Note) -
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Abstract
What is disclosed is the preparation and use of synthetic water soluble copolymers useful in modifying the water permeability characteristics of subterranean hydrocarbon producing formations. The copolymers are in the form of dilute, pumpable, homogeneous, aqueous solutions and comprise a crosslinked synthetic copolymerizate with intramolecular and intermolecular crosslinking in a non-gelled state and a molecular size/shape corresponding to a K-value of 220-450.
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