Drilling fluid comprising a high-amylose starch

Details Drilling fluid comprising a high-amylose starch Drilling fluid comprising a high-amylose starch

C - Chemistry, Metallurgy

09

K

C09K 8/20 (2006.01)

Patent

CA 2417811

The invention relates to drilling fluids used in methods for drilling wells into subterranean formations containing oil, gas or other minerals for the purpose of extraction and production of said minerals and the use of starch in such fluids. The invention provides a method for drilling such a well using a drilling fluid comprising a high-amylose starch or starch-blend.

L'invention concerne des fluides de forage utilisés dans des procédés de forage de puits dans des formations souterraines contenant du pétrole, du gaz ou d'autres gisements miniers, aux fins d'extraction et de production de ces gisements miniers; elle concerne également l'utilisation d'amidon dans de tels fluides. L'invention concerne encore un procédé de forage d'un tel puits à l'aide d'un fluide de forage comprenant un amidon à forte teneur en amylose, ou un mélange d'amidons.

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