E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/62
E21B 43/116 (2006.01) E21B 34/10 (2006.01) E21B 43/119 (2006.01)
Patent
CA 1283042
Abstract of the Disclosure A vent subassembly includes a vent body having an opening which is covered or uncovered dependent upon the location of a vent sleeve relative to the vent body. The vent subassembly can be connected below a packer, and the vent sleeve can be connected to a perforator so that move- ment of the vent sleeve is concurrently communicated to the perforator, such as for initiating the firing of the perfor- ator. The vent sleeve is moved by an actuator subassembly, which is to be connected above the packer if the vent and actuator subassemblies are used with a packer. The actuator subassembly has a piston housing, a piston slidably disposed in the piston housing, and a connector string extending from the piston to the vent sleeve. The piston is responsive to a differential pressure existing between the annulus outside the actuator subassembly and an interior pressure within the actuator subassembly.
543743
George Kevin R.
Haugen David M.
Luke Robert R.
Wesson David S.
George Kevin R.
Haliburton Company
Haugen David M.
Luke Robert R.
Swabey Ogilvy Renault
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