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:
Mar. 14, 2017
Filed:
May. 15, 2013
Applicant:
Keith K. Millheim, The Woodlands, TX (US);
Inventor:
Keith K. Millheim, The Woodlands, TX (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01); E21B 33/064 (2006.01);
U.S. Cl.
CPC ...
E21B 17/012 (2013.01); E21B 33/064 (2013.01);
Abstract
A dual-BOP or multi-BOP self-standing riser configuration is disclosed, including at least a riser or another similarly fixed tubular structure disposed in communication with an associated drilling vessel and a subsurface well. The system supplements the traditional mud-line level BOP with one or more additional near-surface BOPs, which are tensioned using an adjustable buoyancy chamber rather than by means of a vessel-born tensioning device.