Research on New Type of Drilling Bits, Tools and Mud in Difficult Drilling Formations
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P634

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    Abstract:

    The structure and manufacture of new type of bits, working principle and types of fluidic drilling tools, action mechanism of anti-cave-in thinners, for difficult formation drilling were discussed.

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History
  • Received:September 13,2005
  • Revised:September 13,2005
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