In-situ formation of solids for well completions and zonal...

E - Fixed Constructions – 21 – B

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E21B 43/25 (2006.01) C09K 8/42 (2006.01) C09K 8/516 (2006.01) C09K 8/56 (2006.01) C09K 8/80 (2006.01) E21B 33/13 (2006.01) E21B 33/138 (2006.01) E21B 43/04 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2684670

A sol of metallic alkoxide is pumped into a desired location in a wellbore and allowed to gel, creating solids in-situ. The sol is either unstabilized, requiring rapid placement before gelling, or the sol is stabilized, permitting off-site mixing. Sols can be stabilized with either surfactant or with interfacial polymers. Large concentrations of surfactant can be placed in the sol to create templates around which gelation occurs, creating porous solids.

Un sol d'alcoolate métallique est pompé dans un emplacement désiré dans un puits de forage et amené à se gélifier, créant des matières solides in situ. Ou bien le sol est non stabilisé, nécessitant une mise en place rapide avant la gélification, ou bien le sol est stabilisé, permettant un mélange hors-site. Les sols peuvent être stabilisés soit avec un agent tensio-actif, soit avec des polymères interfaciaux. De grandes concentrations d'agent tensio-actif peuvent être placées dans le sol pour créer des matrices autour desquelles la gélification se produit, créant des matières solides poreuses.

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