作者: David Lundgreen , Nathan Nelson , Scott Dahlgren , David R. Hall
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摘要: In one embodiment of the invention, a downhole tool string component comprising through bore running there formed to accept drilling fluid. At least mechanical actuation device is also disposed within bore. A guide channel and comprises geometry shaped conduct at device. switch in an original position actuatable by subsequent position. resettable mechanism contact with wherein returns its receptacle may be