Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus and method for remote adjustment of drill string centering to prevent damage to wellhead

Apparatus and method for remote adjustment of drill string centering to prevent damage to wellhead

US Patent 6615921 · Granted Sep 9, 2003

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Shear ram type blowout preventer2017
Shear ram type blowout preventer2017
Riser tensioner assembly2016
Heavy duty riser connector assembly2016
Pumping mud by electrohydrodynamic propulsion2014
Pumping mud by electrohydrodynamic propulsion2014
Acoustically measuring annulus probe depth2012
Casing hanger nesting indicator2012
Riser tensioner with shrouded rods2012
Mechanically operated hydraulic valve actuator2012
Wellhead system having a tubular hanger securable to wellhead and method of oper2012
Wireline run fracture isolation sleeve and plug and method of operating same2012