Search Results - ruijin cang

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  1. Drilling oil wells is an expensive proposition. Rig rental can cost as much as $500,000 per day. The drill bits must be kept cool or the bits quickly become dull, causing the bit to drill slowly. When rock is heated the surface of the rock becomes more plastic, which slows drilling. The bit can be cooled with fluids which also helps to bring the br...
    Published: 5/28/2014
    Inventor(s): Kangping Chen, Ruijin Cang
    Category(s): Energy & Power

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