Development drilling system
Patent 4819730 Issued on April 11, 1989. Estimated Expiration Date: 
July 24, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 24, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2973046 3313345 3434550 3601187 3817325 Marine structure with hydraulic tensioner Spacers for vertically moored platform riser bundles Self-supported drilling riser Sonar/television system for use in underwater exploration Termination means for a plurality of riser pipes at a floating platform InventorsAssigneeApplicationNo. 07/077365 filed on 07/24/1987US Classes:166/355, With means to compensate for vessel movement114/144B, Dynamic anchor166/341, With orienting or aligning of member for connection166/359, Removable riser166/360, Well component assembly means166/366, Multiple wells175/7, Boring from floating support with submerged independent anchored guide base405/195.1MARINE STRUCTURE OR FABRICATION THEREOFExaminersPrimary: Kisliuk, Bruce M.Attorney, Agent or FirmInternational ClassesE21B 7/128 (20060101)E21B 19/00 (20060101) E21B 7/12 (20060101) E21B 43/017 (20060101) E21B 43/00 (20060101) E21B 43/01 (20060101) AbstractA floating drilling platform having dual work stations is disclosed for performing deep sea drilling and/or hydrocarbon production operations. The structure of the platform is designed to accommodate replaceable modules which facilitate the installation and removal of either a drilling derrick or production equipment. Thus, during the drilling phase of a reservoir's development, the platform may be outfitted with dual drilling derricks while at later times the platform may be outfitted with a drilling derrick and a full production facility. Various expedients are available to permit the equipment of one work station to be used in conjunction with the equipment of one other. Simultaneous management of dual conductors is enabled by a dual riser management system which models in real time riser behavior under varying environmental and other operational conditions. The dual riser management system includes a riser analysis subsystem, a mooring analysis subsystem and a vessel stability analysis subsystem.Other References
Field of SearchRemovable riserWell component assembly means Surface vessel Having means to move vessel to precise location Having means to hold vessel at given location (e.g., anchor, etc.) With means to compensate for vessel movement Multiple wells With orienting or aligning of member for connection Riser Connection of riser-and-tubing assembly to other structure Yieldable tubing | |
