Abstract:Attempts have been made in the past to use uphole motor in extending the reach of coiled tubing in directional wellbores, but these efforts were not successful because of poor design. We have designed a workable configuration suitable for coiled-tubing and conventional drillpipe operations. In addition, we have developed a procedure for selecting the required uphole motor size, rotating tubular dimensions, and circulation rate based on surface pump and tubular-buckling constraints.
The configura… Show more
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