C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/18 (2006.01) C09K 8/22 (2006.01) C09K 8/54 (2006.01) E21B 43/22 (2006.01)
Patent
CA 2528014
An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount of a choline salt. A method for under-balanced drilling is also disclosed including the step of circulating a drilling fluid including an effective amount of a choline salt to reduce reactive shale and/or clay swelling during under-balanced drilling operations.
Le présent document concerne un additif de fluide de forage en sous-pression qui réduit le schiste argileux réactif et/ou le gonflement des argiles lors des opérations de forage en sous-pression. L'additif inclut une quantité efficace de sel de choline. Le document traite également d'une méthode de forage en sous-pression prévoyant une étape de mise en circulation d'un fluide de forage comprenant une quantité efficace de sel de choline visant à réduire le schiste argileux réactif et/ou le gonflement des argiles lors des opérations de forage en sous-pression.
Gatlin Larry W.
Kippie David P.
Clearwater International L.l.c.
Marks & Clerk
LandOfFree
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