Measurement while drilling apparatus and method of using the same
作者： Stephen B. Poe , Manoj Gopalan
DOI:
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摘要: A method and apparatus used to transmit information the surface from a subsurface location during process of drilling bore hole is described. novel pressure pulse generator or “pulser” coupled sensor package, controller battery power source all which reside inside short section drill pipe close bit at bottom being drilled. The assembled “MWD Tool” can be commanded make measurement desired parameters this by encoding data in pulses generated pulser valve that includes stator rotor may open closed create pulses.
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