FE 02-03 Power and Hoisting

Nội dung text: FE 02-03 Power and Hoisting

1. 4 Basic Functions of the Rig • Hoisting • Rotating • Circulating • Well Control
2. The Hoisting System: Function • Provides a means of lowering or raising drill strings, casing strings, and other subsurface equipment in or out of the hole
3. The Hoisting System: Parts
4. The Mast Crown Monkey board Mast Rig floor V door
5. Types of Derricks • Triple- has the capacity of pulling 90’ stands of pipe • Double- has the capacity of pulling 60’ stands of pipe • Single- has the capacity of pulling 30’stands of pipe (one 30-ft joint)
6. “A” Frame • The “A” frame structure on a jackknife is used to raise and lower the mast. It also supports the derrick in the raised position.
7. Substructure • Supports the rig floor and the weight of the drillstring • Provides space and support for the equipment and for people to work • Provides space for the Blowout Preventers (BOP’s)
8. V-Door Ramp • The ramp which connects the “V” door to the cat walk.
9. Monkey Board • The platform on which the derrick man works when tripping pipe.
10. The Drawworks • The principal function is to convert the power source into a hoisting operation and provide braking capacity to stop and sustain the weights imposed when lowering or raising the drill string.
11. Cathead • A shaft with a lifting head that extends on either side of the drawworks. • Major functions: – It is used in making up and breaking out tool joints in the drill string. – It is also used as a hoisting device for heavy equipment on the drill floor.
12. Drilling Line • Does not tend to wear uniformly • Maintained in good condition by following a scheduled slip-and-cut program
13. Fastline • Part of the drilling line between the drawworks and the crown block • Moves as the traveling block is raised or lowered
14. Drawworks Braking Systems • Band-type brakes on the drawworks • Auxiliary brakes (used only when RIH on trip to prevent burning of the band-type brakes) – Hydro-dynamic type – Electromagnetic type
15. Electromagnetic Aux Brake • Braking is provided by two opposing magnetic fields. The magnitude of the magnetic fields is dependent on the speed of rotation and the amount of external excitation current supplied.
16. Crown Block • A series of sheaves affixed in the top of the derrick used to change the direction of pull from the drawworks to the traveling block.
17. Parts of The Traveling Block • Hook – Where the drill stem and elevators are attached • Elevators Elevator bails– Set of clamps that are latched onto drill pipe or casing to allow the driller to raise or lower the drillstring or casing string Elevators
18. Elevators Elevator bail or link