The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 1987
Filed:
Feb. 24, 1986
James A Burton, Houston, TX (US);
Hydril Company, Los Angeles, CA (US);
Abstract
The invention relates to a method and apparatus for remotely connecting or disconnecting upper flexible choke/kill lines (including auxiliary lines) to choke/kill lines of a floating drilling rig riser which has been lowered toward the sea floor. Remote stab assemblies are mounted to a stowable tension ring releasably secured to a housing secured to rig beams. In the stowed position, hydraulic stab connectors secured to travelling yoke assemblies are disconnected from each line. The travelling yoke assemblies are moved to an outer position so that the flexible drape hoses clear the space beneath the housing in order that a blowout preventer stack may be trolleyed in from the side of the rig moon pool during running or retrieval. The stack is lowered toward the sea floor by the riser. A telescopic joint is connected to the top of the riser and lowered through the housing and the tension ring. The tension ring is temporarily connected to the telescopic joint, disconnected from the housing and rides down with the telescopic joint while the stack, riser and telescopic joint are lowered until the stack is landed on the sea floor. The tension ring is then partially connected to the telescopic joint as the tension cables are pulled upwardly. Apparatus is provided for angularly and axially aligning the stab connectors with the choke/kill lines of the riser when the travelling yoke assemblies are moved inwardly where complete connection of the tension ring and telescopic joint is accomplished.