E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01) C09K 8/575 (2006.01)
Patent
CA 2070106
SAND CONSOLIDATION METHODS (D# 91, 011-F) ABSTRACT OF THE DISCLOSURE Methods are provided for consolidating unconsolidated mineral grains such as sand within a subterranean oil formation to form a fluid permeable barrier which restrains the movement of sand particles when oil passes through the barrier. A quantity of an organic solvent, preferably an ester such as butyl acetate is injected into the formation as a preflush. Next, a liquid comprising a polymerizable oligomer such as furfuryl alcohol oligomer, an ester such as butyl acetate, and an acid catalyst such as toluene sulfonic acid is provided, then mixed with a noncondensable gas to form a multiphase or aerosol treating fluid, and the treating fluid is injected into the formation to be consolidated. The well is shut in for sufficient period of time for polymerization to convert the injected fluids into a permeable barrier around the wellbore.
Fader Philip Daniel
Friedman Robert Harold
Pardo Carlos Walter
Surles Billy Wayne
Gowling Lafleur Henderson Llp
Texaco Development Corporation
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