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

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Research on New Type of Drilling Bits, Tools and Mud in Difficult Drilling Formations
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                        HE Yuan-xinHE Yuan-xin
Beijing Institute of Exploration Engineering
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ZHAO Er-xinZHAO Er-xin
Beijing Institute of Exploration Engineering
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JIA Mei-lingJIA Mei-ling
Beijing Institute of Exploration Engineering
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CAI Jia-pinCAI Jia-pin
Beijing Institute of Exploration Engineering
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TAO Shi-xianTAO Shi-xian
Beijing Institute of Exploration Engineering
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Clc Number: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.

Key words:difficult drilling formation; new type of bits; fluidic drilling tool; anti-cave-in thinner

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Received:September 13,2005
Revised:September 13,2005
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