The Hydra-Stroke bumper sub—a key drillstem component in deepwater drilling operations where drillstring oscillation can be a problem—provides 6 ft of reliable telescopic movement, without placing any limitations on drillstring torque capacity, tensile strength, or hydraulic capability.
The Hydra-Stroke bumper sub is fully balanced to the annulus and the mud pumps, making it completely reliable at any depth and in any drilling environment and eliminating the pump-open effect caused by internal pressure. It is rated for high temperatures and pressures. Wellbore fluid cannot enter the drive section, improving reliability.
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