Stroked Out Position-The Heave Compensator aboard D/V Glomar challenger is shown in a partially stoked out position. The lower lifting block and piston rod supports the full weight of th drill string and the upper cylinder portion is linked to the traveling block. The system is designed to improve core and extend bit life by eliminating the movement and bottom pounding of the drill string due to vessel heave. This is accomplished by maintaining a constand hydraulic supporting under the piston as the compensating cylinder heaves with the vessel. Maximum working load is 600,000 pounds and maximum heave compensated 15 feet. Load variation at 400,000 pounds (plus or minus) 2,500 pounds.

• Deep Sea Drilling Project

This digital image is a surrogate of an item from the SIO Deep Sea Drilling Project Records, 1961-1987

• Deep Sea Drilling Project
• Glomar Challenger (Ship)

• Deep-sea drilling ships
• Drilling and boring
• Oceanographic research ships
• Ships--Dynamic positioning systems

• image

• UC Regents

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2020-10-27