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US 7,025,146 B2Granted
Alternative packer setting method
AssigneeBaker Hughes Incorporated
InventorsJames G. King, Steve Johnstone
Life of this patent
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AssigneeBaker Hughes Incorporated
InventorsJames G. King, Steve Johnstone
Estimating the term…
Fluid setting pressure is delivered to a hydraulically set well packer through an external conduit strapped to the exterior of a well workstring above the packer assembly. The continuity of the external conduit is continued past the packer assembly by following a flow channel along the mandrel sleeve thickness. Representatively, the external conduit may serve a primary well function other than packer setting (e.g. well chemical delivery). A calibrated rupture element in the external conduit is disposed to initially obstruct external conduit flow past the packer element. Consequently, fluid pressure transferred down the external conduit is first channeled to the packer setting pressure chamber. After setting, the fluid pressure in the external conduit is increased to rupture the calibrated element. When the external conduit flow channel is opened by rupture of the calibrated element, and the additional well service function may be accomplished.
A subterranean well service string having an internal fluid flow bore, a fluid pressure actuated appliance therein and an external fluid conduit secured to said service string for serving an independent well service function, said external conduit having a calibrated rupture element obstructing fluid flow continuity downhole of said rupture element and a junction conduit uphole of said rupture element, said junction conduit having a fluid transfer connection with said fluid pressure actuated appliance.
A subterranean well packer having an internal fluid flow bore and a by-pass conduit for upstream-to-downstream communication continuity of an external conduit past a wellbore sealing element actuated by fluid pressure, said by-pass conduit having a selectively removed flow obstruction and a fluid transfer junction upstream of said obstruction into a sealing element actuating chamber.
A subterranean well packer comprising a tubular mandrel having a workstring flowbore therein, an expandable wellbore sealing element disposed about said mandrel, a fluid pressure chamber for actuating said sealing element and an upstream-to-downstream fluid service conduit contiguous with said mandrel disposed between said flowbore and said sealing element, the improvement comprising:
A method of setting, by fluid pressure in an actuation chamber, a subterranean well packer secured within a well workstring having a central flowbore and an external fluid service conduit, said method comprising the steps of:
Dependencies are inferred from the claim text.