Fracturing fluid breaker system which is activated by fracture closure
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United States of America Patent
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Mar 26, 1985
Grant Date -
N/A
app pub date -
Sep 7, 1983
filing date -
Sep 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed are compositions and related methods of use for reducing the viscosity of a fluid introduced into a subterranean formation. The compositions are introduced into the subterranean formation and are non-reactive to the fluid until activated by the closing of any fractures in the subterranean formation upon the compositions. The compositions are comprised of a viscosity reducing chemical, such as an enzyme, oxidizing agent, acid, catalyst, or mixtures thereof, encapsulated in dry or liquid form within hollow or porous, crushable beads. The beads can be formed from glass, ceramics, plastics, gels, or mixtures thereof.
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