Downhole tool
A tool, drilling technology, applied in the field of drilling tools, which can solve problems such as limitations
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[0028]Referring now to the drawings, there are shown various embodiments of the invention. While all of these embodiments described herein are open hole, it should be understood that this could also be a cased well, or include a drill string or production tubing. All such understandings are included in the use of the term "drilling". Also, in the context of well and tool arrangements, the term "upper" is used for a direction toward the surface, and "down" for a direction away from the surface, even if the well in question is not vertical. The first embodiment of the present invention is in figure 1 Shown in , includes a drive unit 10 that includes connections for cables (not shown). The drive unit 10 is basically a tractor unit such as that described in US 5,954,131. However, in the configuration described here, it sits on top of the tool string and is used to push the tools along the well rather than pull them behind it. Also, wires are used to provide power and data belo...
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