Other

David A McMahon

Larry G Keast

A top drive or a power swivel with a high pressure washpipe and seal assembly receives high pressure drilling fluid from a mud pump and provides high pressure drilling fluid to the drilling fluid side of a dual fluid reservoir. A separating piston in the dual fluid reservoir moves toward the oil side as hydraulic oil is used for lubrication. This dual fluid reservoir with separating piston provides hydraulic oil at drilling mud pressure as required by the set of unique high pressure seals which are continuously lubricated and which generate minimal heat.

Growing community of inventors

Houston, TX, United States of America

David A McMahon