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公开(公告)号：CA2787570C
公开(公告)日：2017-02-28
申请号：CA2787570
申请日：2012-08-22
Applicant: WEATHERFORD/LAMB INC
Inventor： LE TUONG THANH , ROSSING MICHAEL DEAN
Abstract: A pulsing tool for use with a tubular string having a motor unit and a pulsing unit coupled to the motor unit. In one embodiment, the pulsing unit includes a mandrel having an inlet opening and an outlet opening and a flow control bushing, wherein rotation of the mandrel relative to the flow control bushing creates a pressure oscillation which causes movement of the tubular string.
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