... manpower rad consistency operator upstream oil & gas drilling equipment rig mechanisation application drilling contractor reduction layout aTC 6996 Rig Automation-Drilling: A Proven Concept S.J. Houston, Strachan & Henshaw Ltd. Copyright 1992, Offshore Technology Conference This paper...

... background. offshore drilling operation drilling equipment drilling rig carriage hydraulically pipe safety drill pipe contractor hydraulic motor automation lig-automated drilling programme reduction platform rad drilling contractor drilling upstream oil & gas rig strongback...

...-frequency longitudinal surge phenomena in still water and in head waves of a VLCC and a LNG carrier moored in relatively deep water. extinction test regular wave natural frequency surge motion upstream oil & gas rad moored vessel wave drift force spring constant equation hydrodynamic...

... to 25 percent may result in that frequency region where most waves carry energy, viz, w > 0.5 rad./sec. Generally, Ochi overestimates the vertical wave-excited forces for this case, whereas Hooft's results lie within the results80f theexperiments conducted by Motora et ale and Mercier. 9 From Newton's...