Method of making an anti-bit balling well fluid using a...

C - Chemistry – Metallurgy – 09 – K

Patent

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C09K 8/32 (2006.01) E21B 21/00 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2222536

A method of making a well fluid for use in a well which includes the steps of determining uphole and downhole operating temperatures in the well, and then contacting a well lubricant with a lubricating additive, wherein the lubricating additive has a cloud point temperature greater than the uphole operating temperature and less than the downhole operating temperature. A method of lubricating drilling equipment during operation of a subterranean well, includes the steps of determining uphole and downhole operating temperatures in the well, and then contacting the drilling equipment with a treating fluid comprising a well lubricant and a lubricating additive, with the lubricating additive having a cloud point temperature greater than the uphole operating temperature and less than the downhole operating temperature.

La présente invention se rapporte à un procédé de production d'un fluide de forage dont les étapes consistent à déterminer les températures d'opération en tête et au fond du trou de forage, ainsi qu'à mettre en contact un lubrifiant de trou de forage avec un additif de lubrification, ledit additif ayant une température de trouble supérieure à la température de service en tête du trou de forage et inférieure à la température de service au fond du trou de forage. Un procédé de lubrification des équipements de forage durant l'exploitation d'un trou de forage souterrain consiste à déterminer les températures de service en tête et au fond du trou de forage et ensuite à mettre en contact l'équipement de forage avec un fluide de traitement comportant un lubrifiant de trou de forage et un additif de lubrification. Ledit additif possède une température de trouble supérieure à la température de service en tête du trou de forage et inférieure à la température de service au fond du trou de forage.

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