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SELF-PROPELLED DRILLING AND WORKOVER RIG
SELF-PROPELLED DRILLING AND WORKOVER RIG
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机译:自走式钻井和修井机
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摘要
An articulated self-propelled drilling and workover rig capable of using and racking three-joint sections of drillpipe and featuring high mobility and ease of setup utilizes an hydraulically actuated telescoping mast mounted on a tandem rig with the power supply mounted on a tractor and arranged to alternately propel the rig on the highway and power the drawworks at the drilling site.
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