Moonpool guidance system for drill strings having attached umbilical lines

Patent · Tue Apr 23 04:00:00 EST 1985

OSTI ID:5357122

Danielson, T R; Eberwine, D A

A system for guiding a drill string with an attached umbilical line through a moonpool of a floating structure. The system comprises a support means, and a workhead assembly secured to the outer end of the support means. The workhead assembly is adapted to engage the drill string and umbilical line without damaging the umbilical. The workhead assembly comprises a turntable support, which is secured to the support means, and a turntable. The turntable is positioned about the drill string and umbilical, and rests on the turntable support. Rollers on the turntable allow the drill string and umbilical line to move vertically through the turntable. Roller units on the turntable support allow the turntable and the engaged tool string and umbilical to rotate with respect to the support means.

• Assignee: Exxon Production Research Co.
• Patent Number(s): US 4512408
• OSTI ID: 5357122
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILL BITS
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
HOISTING
HOISTS
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
MOTION
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PIPES
POSITIONING
ROBOTS
ROTATION
SUPPORTS
WELLS