Silicate drilling fluid composition containing lubricating...

Details Silicate drilling fluid composition containing lubricating... Silicate drilling fluid composition containing lubricating...

C - Chemistry, Metallurgy

09

K

C09K 8/04 (2006.01) C09K 8/035 (2006.01) C10M 101/00 (2006.01) E21B 21/00 (2006.01) C01B 33/24 (2006.01)

Patent

CA 2645943

The present disclosure relates to the compositions of a water-based silicate drilling fluid comprising: (1) alkali metal silicates; (2) cationic polyacrylamide; (3) a lubricant composition; and (4) other conventional drilling fluid additives. The lubricant composition comprises a lubricating effective amount of a carrier oil and one or more lubricants selected from lecithins, sulfurized vegetable and/or lard oils or modified castor oil.

On présente ici des compositions de fluides de forage aqueux renfermant des silicates, composés : (1) de silicates de métaux alcalins; (2) de polyacrylamide cationique; (3) d'un lubrifiant; (4) d'autres additifs pour fluides de forage classiques. Le lubrifiant est constitué d'une quantité suffisante d'une base d'huile et d'au moins un lubrifiant parmi les suivants : lécithines, huiles végétales et/ou huiles de lard sulfurisées ou huile de castor modifiée.

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