Energized fluid for generating self-cleaning filter cake

Details Energized fluid for generating self-cleaning filter cake Energized fluid for generating self-cleaning filter cake

E - Fixed Constructions

21

B

E21B 37/06 (2006.01) E21B 43/04 (2006.01)

Patent

CA 2652042

A process for generating and subsequently breaking a filter cake, including dissolving a non-reactive gas in a wellbore fluid to form an energized fluid; pumping the energized fluid into a formation at a downhole pressure, wherein the pumping is at overbalanced conditions; producing a filter cake; and decreasing the down hole pressure to below a cut point of the dissolved gas in the energized fluid to form a vapor phase, wherein the vapor phase compromises the integrity of the filter cake is disclosed.

Procédé de production puis de désintégration d'un cake de filtration, comprenant les étapes consistant à dissoudre un gaz non réactif dans un fluide de puits de forage pour former un fluide sous pression ; à pomper le fluide sous pression dans une formation à une pression de fond, le pompage s'effectuant dans des conditions de légère surpression ; à produire un cake de filtration ; et à réduire la pression de fond à un niveau inférieur à un point de coupe du gaz dissous dans le fluide sous pression pour former une phase vapeur, la phase vapeur affectant l'intégrité du cake de filtration.

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