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Line 23: + + + − − [[file:Land rig example drawing.png|left|thumb|{{figure number|1}}Components of a typical land rig: (1) crown block, (2) mast, (3) monkey board, (4) traveling block, (5) hook, (6) swivel, (7) elevators, (8) kelly, (9) kelly bushing, (10) master bushing, (11) mouse hole, (12) rathole, (13) backup tongs, (14) makeup tongs, (15) drawworks, (16) weight indicator, (17) driller's console, (18) dog house, (19) rotary hose, (20) accumulator unit, (21) pipe ramp, (22) pipe rack, (23) substructure, (24) mud return line, (25) shale shaker, (26) choke manifold, (27) mud-gas separator, (28) degasser, (29) reserve pit, (30) mud pits, (31) desilter, (32) desander, (33) centrifuge, (34) mud pumps, (35) dry mud components storage, (36) water storage, (37) engines and generators, and (38) blowout preventer stack. (From IHRDC.)]] −
Annotated image example
[[File:PinedaleFieldLandRig.png|thumb|Drilling rig in Pinedale field with the Wind River Mountains, Wyoming, USA in the background. Photo © by Douglas McCartney.]]
[[File:PinedaleFieldLandRig.png|thumb|Drilling rig in Pinedale field with the Wind River Mountains, Wyoming, USA in the background. Photo © by Douglas McCartney.]]
==Parts of a rig==
The parts of the rig can be grouped into five systems ([[:file:Land rig example drawing.png|Figure 1]]):
The parts of the rig can be grouped into five systems ([[:file:Land rig example drawing.png|Figure 1]]):
* Circulating
* Circulating
* Control and measurement
* Control and measurement
{{Annotated image/Land rig|float=left}}
{{clear}}
==Power system==
==Power system==
Power is provided to the rig by diesel engines, diesel-electric engines, or in some cases, butane engines. Power is transferred from the engines to the different rig systems by belts, chains, and drive shafts on a mechanical rig, or by generated DC electrical power on an electric rig. Power is distributed to the [https://en.wikipedia.org/wiki/Rotary_table_(drilling_rig) rotary table] and mud pumps (34 in [[:file:Land rig example drawing.png|Figure 1]]) while drilling and to the drawworks (15) when [[trip]]ping.
Power is provided to the rig by diesel engines, diesel-electric engines, or in some cases, butane engines. Power is transferred from the engines to the different rig systems by belts, chains, and drive shafts on a mechanical rig, or by generated DC electrical power on an electric rig. Power is distributed to the [https://en.wikipedia.org/wiki/Rotary_table_(drilling_rig) rotary table] and mud pumps (34 in [[:file:Land rig example drawing.png|Figure 1]]) while drilling and to the drawworks (15) when [[trip]]ping.