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Reversible polymeric gelation for oilfield applications

Tipo: Patente
Titulares:
Schlumberger technology corporation (100%)
Inventores:
Kay Louise Robinson
Gary John Tustin
Timothy Gareth John Jones
Solicitud
US23810708A
25-09-2008
Concesión
02-08-2011
A subterranean location accessed via a wellbore is treated with an oilfield fluid containing a viscosifying agent which is a polymer and a cross-linking agent which can undergo the Diels-Alder reaction to form a gel. Conditions at the subterranean location alter fluid viscosity by bringing about the Diels-Alder reaction to increase viscosity or the retro Diels-Alder reaction to decrease the viscosity of the gel.
Materia: Construcciones fijas
CIP: E21B43/04 (2006.01); E21B43/22 (2006.01); E21B43/26 (2006.01)
CPC: C08F220/281 (EP,GB,US); C08F222/404 (EP,GB,US); C08F220/56 (EP,US); C08F222/04 (GB); C08F222/06 (GB); C08F224/00 (GB); C08L33/08 (GB); C08L33/08 (GB)