E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/40 (2006.01) E21B 21/06 (2006.01)
Patent
CA 2623581
A method of drilling a formation containing heavy oil that includes providing a drilling fluid comprising: a base fluid; and a separating agent characterized as enhancing the separation of heavy oil from a drilling fluid; drilling the formation containing the heavy oil using the drilling fluid; returning the drilling fluid to a formation surface, wherein the returned drilling fluid contains a portion of the heavy oil therein; removing at least a portion of the heavy oil from the returned drilling fluid; and recirculating the drilling fluid into the formation is disclosed.
L'invention concerne une méthode de forage d'une formation contenant du pétrole lourd qui inclut la fourniture d'un fluide de forage comprenant un fluide de base et un agent de séparation caractérisé par son amélioration de la séparation du pétrole lourd d'un fluide de forage. Les étapes de la méthode sont : le forage d'une formation contenant le pétrole lourd au moyen du fluide de forage, le retour du fluide de forage à une surface de formation, où le fluide de forage retourné contient une partie du pétrole lourd, l'enlèvement d'au moins une partie du pétrole lourd du fluide de forage retourné et la recirculation du fluide de forage dans la formation.
Bayter Rafael
Daboin Nestor W.
Freeman Michael A.
Roberts Nicholas D.
Simpson Barry
Kirby Eades Gale Baker
M-I Llc
LandOfFree
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