E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/00 (2006.01) E21B 21/08 (2006.01) E21B 43/26 (2006.01)
Patent
CA 2468732
A method for addressing the problem known as formation breathing occurring during the drilling of a subsea well in an earth formation in performing a series of leak off tests to determine the earth formation fracture propagation pressure and the earth formation fracture reopen pressure and maintaining the hydrostatic pressure on the earth formation in a range between the fracture reopen pressure and the fracture propagation pressure.
Procédé concernant la respiration d'une formation pendant le forage d'un puits sous-marin dans une formation terrestre, ce qui consiste à effectuer une série d'essais de fuite afin de déterminer la pression de propagation d'une fracture de la formation terrestre et la pression de réouverture de cette fracture et à maintenir la pression hydrostatique sur ladite formation terrestre dans une plage située entre la pression de réouverture et la pression de propagation de la fracture.
Kotara Ernest Benedict Jr.
Mayo George Herbert III
Van Oort Eric
von Eberstein William Henry Jr.
Weaver Mark Allen
Shell Canada Limited
Smart & Biggar
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