Chemically inert resin coated proppant system for control of proppant flowback in hydraulically fractured wells
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United States of America Patent
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Feb 18, 1997
Grant Date -
N/A
app pub date -
Apr 10, 1995
filing date -
Apr 10, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is an improvement in a method for propping a fracture adjacent a wellbore formed by injecting in said fracture a carrier fluid containing proppant coated with a curable resin which improvement comprises: a) using proppant coated with a resin fluid containing a polymerizable oligomer of furfuryl alcohol resin, a catalyst comprising an oil soluble, slightly water soluble organic acid and an ester of a weak organic acid to consume water produced by the polymerization of resin; b) using as a carrier an aqueous saline fluid comprising water which is 70% to 100% saturated with sodium chloride, c) suspending said resin-coated proppant in the carrier fluid, forming a fluid mixture of resin-coated proppant and carrier fluid; and injecting said mixture into said fracture, wherein the timing of the addition of the catalyst can be varied.
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