C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/06 (2006.01) C09K 8/03 (2006.01) E21B 21/00 (2006.01)
Patent
CA 2170569
The present invention provides a water-based drilling fluid that reduces water adsorption and hydration of argillaceous rocks. The drilling fluid comprises a glycol with a molecular weight of less than about 200, an organic cationic material such as salts of choline or an organic salt of potassium, a filtration control agent, a viscosifier and water.
La présente invention concerne un fluide de forage à base d'eau qui réduit l'adsorption d'eau et l'hydratation des roches argileuses. Le fluide de forage comprend un glycol ayant un poids moléculaire inférieur à environ 200, un matériau cationique organique tel que des sels de choline ou un sel organique de potassium, un agent de régulation de filtration, un améliorant de viscosité et de l'eau.
Finlayson & Singlehurst
M-I Drilling Fluids L.l.c.
M-I L.l.c.
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