Method for treatment of underground reservoirs

Details Method for treatment of underground reservoirs Method for treatment of underground reservoirs

E - Fixed Constructions

21

B

E21B 37/06 (2006.01) C09K 8/52 (2006.01) C09K 8/72 (2006.01) C09K 8/86 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2378073

A method for treating an underground reservoir, which method comprises introducing into the reservoir a treatment fluid comprising, dissolved or dispersed in water, an ester and a non-enzyme catalyst capable of increasing the rate of hydrolysis of the ester, such that the ester hydrolyses to produce an organic acid to dissolve acid soluble material present within the reservoir.

L'invention concerne un procédé de traitement d'un réservoir souterrain consistant à introduire dans le réservoir un fluide de traitement comprenant un ester et un catalyseur non enzymatique dissous ou dispersés dans l'eau, lesquels peuvent augmenter le taux d'hydrolyse de l'ester, de sorte que l'ester s'hydrolyse et produise un acide organique afin de dissoudre dans le réservoir les matières solubles dans l'acide.

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