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US 2015/0021036 A1Published application
Pre-positioned capping device for source control with independent management system
AssigneeConocoPhillips Company
InventorRandall S. SHAFER
Life of this patent
Estimating the term…
Abstract
Systems and methods contain fluids discharged from a subsea well or at the surface by capping the well blowout with a pre-positioned capping device. The capping device includes at least one blind shear ram and is separate from a blowout preventer. Different personnel offsite of a rig drilling the well may have access and control to operate the device.
Claims20
A system with a pre-positioned capping device attached to a wellhead for a drilling rig, comprising:
- at least one blind shear ram;
- an independent power source to operate the ram without relying on rig power;
- and
- an independent management system offsite of the rig and that receives wellbore data from an independent control system and sends command signals to the independent control system in order to actuate the ram without use of the rig.
1 more element
A method of controlling a well, comprising:
- disposing a pre-positioned capping device and a blowout preventer stack on a wellhead;
- drilling the well through the capping device and blowout preventer stack with a rig;
- operating the blowout preventer stack with a rig control system disposed on the rig and operated by rig personnel;
- receiving wellbore data from the pre-positioned capping device with an auxiliary control system disposed offsite of the rig and operated by a person not part of the rig personnel;
- and
- controlling at least one blind shear ram of the pre-positioned capping device via command signals sent from the auxiliary control system to the pre-positioned capping device.
3 more elements
A system with a pre-positioned capping device attached to a wellhead for a drilling rig, comprising:
- at least one blind shear ram;
- a stored power source to actuate the ram independent of rig power;
- and
- a digital acoustic control system providing two-way communication via sound to send wellbore data from subsea to a user interface above sea surface and receive a command signal from the user interface for operation of the blind shear ram.
1 more element
Dependencies are inferred from the claim text.