Rotary Table 3h5816

Rotary Table The Rotary Table is the second most important part of the drilling equipment after the drawworks. The Rotary table provides the power to turn the drilling. This power is transferred through the Kelly. Almost all the time some work is being done around the Rotary Table area.

Rotary The machine used to impart rotational power to the drill stem while permitting vertical movement of the pipe for rotary drilling. Modern rotary machines have a special component, the rotary or master bushing, to turn the Kelly bushing, which permits vertical movement of the kelly while the stem is turning.

Rotary Drilling A drilling method in which a hole is drilled by a rotating bit to which a downward force is applied. The bit is fastened to and rotated by the drill stem, which also provides a ageway through which the drilling fluid is circulated. Additional ts of drill pipe are added as drilling progresses.

Rotary Table The principal component of a rotary, or rotary machine, used to turn the drill stem and the drilling assembly. It has a beveled gear arrangement to create the rotational motion and an opening into which bushings are fitted to drive and the drilling assembly.

Rotary Table A strong but relatively lightweight device used on some rigs that employ a top drive to rotate the bit. Although a conventional rotary table is not required to rotate the bit on such rigs, crew must still have a place to set the slips to suspend the drill string in the hole when tripping or making a connection. A rotary table provides such a place but does not include all the rotary machinery required in a regular rotary table.

Rotary Speed The speed, measured in revolutions per minute, at which the rotary table is operated.

Rotary Bushing/Master Bushing A device that fits into the rotary table to accommodate the slips and drive the kelly bushing so that the rotating motion of the rotary table can be transmitted to the kelly.

Rotary Helper A worker on a drilling or workover rig, subordinate to the driller, whose primary work station is on the rig floor. Sometimes called floorhand, floorman, rig crew member, or roughneck.

Rotary Hose The hose on a rotary drilling rig that conducts the drilling fluid from the mud pump and standpipe to the swivel and kelly; also called the mud hose or the kelly hose. It is a steel reinforced, flexible hose that is installed between the standpipe and the swivel or top drive.

Rotary Shoe A length of pipe whose bottom edge is serrated or dressed with a hard cutting material and that is run into the wellbore around the outside of stuck casing, pipe, or tubing to mill away the obstruction.

Threats to Release Hazard 1) Incorrect operation of the rotary table. 2) Crew man stepping on the turning rotary table. 3) Other drill floor equipment getting caught by the turning rotary table or Kelly. 4) Floor man catching fingers or hand in part of the rotary table.

Hazard Controls 1) Only the Toolpusher, Driller or Assistant Driller are permitted to operate the Rotary Table.

2) Rotary Table Maintenance and Repair a) Only trained and approved personnel are permitted to inspect, maintain or repair the rotary table. b) A routine must be in place of the maintenane and inspection of the rotary table. 3) Procedures a) Floor men must not step on the rotary table when it is turning, however slow. b) All lines ropes and hoses must be clear of the table and kelly before the table is turning. Wash down hoses should be cut to a length so they cannot reach the rotary table. c) Pipe Tongs when not in use must be tied back clear of the rotary table and kelly. d) The rotary table must not be turning while picking up or laying down a single. e) No man riding work while the rotary table is turning, or the blocks are moving. f) Use of the rig floor air winch for lifting equipment while the rotary is turning shall be limited to essential work. This must be carried out by experienced crew under close supervise. g) A tool must be used to move the Rotary table lock lever or direction change lever. Hand or fingers must never be used. h) The rotary table must not be used for final making up or initial breaking out pipe.

Protection Equipment Regular Safety Clothing, Hard Hat, Cover-alls, Safety Boots, Gloves and Safety Glasses.

Supervision Requirements Toolpusher, Driller or Assistant Driller

Recovery Methods 1) Give immediate first aid. 2) Get assistance from the Rig Medic.