Changes

  | isbn    = 0891816607

  | isbn    = 0891816607

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[[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.]]

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]]):