Methods and compositions for well completion in steam...

E - Fixed Constructions – 21 – B

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E21B 43/24 (2006.01) C09K 8/575 (2006.01) C09K 8/592 (2006.01) E21B 23/00 (2006.01) E21B 43/04 (2006.01) E21B 43/08 (2006.01) E21B 43/10 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2591859

Methods of steam flooding for stimulating hydrocarbon production are provided. In general, the methods comprise the steps of: (A) injecting a mutual solvent preflush fluid capable of dissolving oil into the near-wellbore region of at least a portion of a wellbore; (B) injecting an aqueous preflush fluid further comprising a surfactant capable of oil-wetting silica; (C) injecting a treatment fluid into the near-wellbore region, wherein the treatment fluid comprises a curable resin, and wherein: (i) when injected, the curable resin is in an uncured state; and (ii) after being cured, the curable resin is stable up to at least 350°F (177°C); and (D) driving steam to break through the near-wellbore region.

Des méthodes d'injection de vapeur aux fins de stimulation de la production d'hydrocarbone sont proposées. De façon générale, les méthodes comprennent les étapes suivantes : (A) l'injection d'un bouchon de tête composé d'un solvant liquide capable de dissoudre l'huile d'une partie au moins du puits dans une région avoisinante du puits; (B) l'injection d'un bouchon de tête composé d'un liquide aqueux et d'un surfatif capables de dissoudre la silice imprégnée d'huile; (C) l'injection d'un liquide de traitement dans la région avoisinante du puits, le liquide comprenant une résine durcissable, où : (i) lorsqu'injectée, la résine n'a pas encore durci; et (ii) une fois durcie, la résine durcissable demeure stable jusqu'à 350 degrés F (177 degrés C); et (D) l'injection de vapeur pour traverser la région avoisinante du puits.

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