The last photo shows the fixture Tom used in the rotary table to machine the outer shape of the rocker arms with their rounded ends.
It is connected to the rotary table by four large steel pins that fit into mating holes in the rotary table.
The kelly is used to transmit rotary motion from the rotary table or kelly bushing to the drillstring, while allowing the drillstring to be lowered or raised during rotation.
The structure of the rotary table is designed, and the grinding table is manufactured, installed and debugged.
When the cutting head horizontal swing, the superposition between cutting resistance and cutting unit gravity is an important reason which caused the fracture of rotary table.
Drillers depth is the first depth measurement of a wellbore and is taken from the rotary table level on the rig floor.
Lift the kelly out from rotary table.
While pulling the BHA through the rotary table, the Driller must stop when stabilisers reach the table and have the Floormen remove the bushings.
Main parts such as crownblock, mast, substructure, rotary table and travelling system of drilling rig meet API standard.
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