C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/12 (2006.01) B01D 21/01 (2006.01) C09K 8/10 (2006.01) E21B 37/06 (2006.01)
Patent
CA 2564566
An inhibitive water-based polymer mud system and method for using the system in drilling and in stabilizing wellbores is disclosed for use in water sensitive formations as an alternative to oil-based muds. The system comprises a non-ionic low molecular weight polyacrylamide in combination with a non- ionic high molecular weight polyacrylamide, preferably long chain alcohol and poly anionic cellulose.
La présente invention a trait à un système aqueux de boues à base de polymères inhibiteur et un procédé pour l'utilisation du système en forage et dans la stabilisation de puits de forage destiné à être utilisé dans des formations sensibles à l'eau comme une alternative aux boues à base d'huile. Le système comporte un polyacrylamide non ionique de faible poids moléculaire associé à un polyacrylamide non ionique de poids moléculaire élevé, de préférence un alcool à chaîne longue et une cellulose polyanionique.
Carbajal David
Grebe Ernest Len
West Gary C.
Halliburton Energy Services Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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