E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/27 (2006.01) C09K 8/506 (2006.01) C09K 8/508 (2006.01) C09K 8/575 (2006.01) E21B 33/138 (2006.01) E21B 43/22 (2006.01)
Patent
CA 2445993
The invention relates to a treatment fluid for consolidating an unconsolidated or weakly consolidated granular porous substrate without simultaneous substantial loss of permeability and a method for doing the same. According to the invention, the treatment fluid comprises a solvent; - a surfactant, in a concentration sufficient to form admicelles at the surface of grains of the substrate; and - at least one compound comprising a functional group able to polymerise, together, where appropriate, with a polymerisation initiator. The invention can be implemented, in particular, for consolidating sandstone of a rock formation.
L'invention concerne un fluide de traitement destiné à consolider un substrat poreux granulaire non consolidé ou faiblement consolidé, sans perte simultanée significative de perméabilité, ainsi qu'un procédé associé. Selon l'invention, le fluide de traitement comprend : - un solvant; - un tensioactif, en une concentration suffisante pour former des admicelles au niveau de la surface des grains du substrat; et au moins un composé comprenant un groupe fonctionnel capable de se polymériser, quand cela est approprié, conjointement avec un amorceur de polymérisation. Le fluide et le procédé selon l'invention peuvent être mis en ouvre, notamment, pour la consolidation de grès d'une formation rocheuse.
Breen Christopher
Clegg Francis
Maitland Geoffrey Colin
Schlumberger Canada Limited
Sheffield Hallam University
Smart & Biggar
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