Shale-stabilizing additives

Details Shale-stabilizing additives Shale-stabilizing additives

C - Chemistry, Metallurgy

09

K

C09K 8/22 (2006.01) C09K 8/12 (2006.01)

Patent

CA 2300110

A shale-stabilizing additive is described based on a molecular structure having general formula (I) comprising a polyol containing at least one nitrogen atom, preferably derived from a diamine. The additive can be used for water-based drilling fluid (WBM) to facilitate the drilling process through shales, particularly in environmentally sensitive areas.

La présente invention concerne un additif stabilisateur de schiste basé sur une structure moléculaire représentée par la formule (I). Cette formule comprend un polyol contenant au moins un atome d'azote, de préférence dérivé d'une diamine. L'additif peut être utilisé pour des fluides de forage à base d'eau (WBM) de façon à faciliter le processus de forage de schistes, en particulier dans des zones écologiquement sensibles.

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