After H.W. starts the ceremonial first drilling of the new well, the "walking arm" of this cable-tool rig begins to plunge the bit up and down. The walking arm of a cable-tool rig cannot be used to start a well, as the rigid "tool string" can be forty feet long or more and the derrick tower must be used to drive the bit for about the first sixty feet. Only then can the walking arm be mated to the tool string's cable to continue the bore.
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05/03/2025 alle ore 09:05
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