Controlling pressure and static charge within a wellbore

Details Controlling pressure and static charge within a wellbore Controlling pressure and static charge within a wellbore

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2634213

A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid comprising at least one polymerizable monomer and at least one antistatic agent to control build up of static charge. The second fluid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.

L'invention concerne un procédé permettant de remplacer au moins une partie du liquide à l'intérieur du volume annulaire d'un système de tubage à l'intérieur d'un puits de forage par un second liquide. Le second liquide comprend au moins un monomère polymérisable et au moins un agent antistatique pour commander l'accumulation d'une charge statique. Le second liquide est présélectionné pour fournir une mesure de commande de la pression à l'intérieur du volume annulaire à mesure que le fluide à l'intérieur du volume est chauffé.

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