Well treatment fluid

Details Well treatment fluid Well treatment fluid

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2189610

A well treatment fluid comprising a mixture of (A) a major amount of a first hydrocarbon fluid, the first hydrocarbon fluid being composed predominantly of diaromatics and triaromatics having more than 16 hydrocarbons, and (B) a minor amount of a second hydrocarbon fluid, the second hydrocarbon fluid being composed predominantly of hydrocarbons having from 7 to 12 carbon atoms, wherein the mixture has a density greater than 1000 kg/m3 at 15°C and a viscosity lower than 30 centiStokes at 20°C. In a method according to the invention, a kill fluid is formed by mixing the first and second hydrocarbon fluids to produce a hydrocarbon mixture having a viscosity of less than 30 centiStokes at 20°C and a density above 1000 kg/m3 at 15°C

Fluide de traitement pour puits, à base d'un mélange renfermant (A) une quantité majeure d'un premier fluide constitué d'hydrocarbures, soit principalement des diaromatiques et des triaromatiques de plus de 16 hydrocarbones, (B) d'une quantité mineure d'un second fluide constitué d'hydrocarbones, soit principalement des composés de 7 à 12 carbones; le mélange a une masse spécifique de plus de 1000 kg/m3 à 15 degrés C et une viscosité inférieure à 30 centistokes à 20 degrés C. Selon une méthode de l'invention, on obtient un fluide de type boue en mélangeant les premier et second fluides d'hydrocarbures pour former un mélange d'hydrocarbures possédant une viscosité inférieure à 30 centistokes à 20 degrés C et une masse spécifique supérieure à 1000 kg/m3 à 15 degrés C.

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