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drill bit |
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Two years later, Atlas Copco sought to improve its diamond products business and bought Hobic Bit Industries, which is a major Canadian core drilling bit producer with in-roads into China. Since the process of drilling exposes water from the drilling fluid to reduced iron filings from the drilling bit, "some of the hydrogen and quite possibly some of the methane as well are forming as an artifact of the drilling,' says Valley. It cools and lubricates the drilling bit, conditions the formation wall, removes cuttings from the borehole, brings traces of formation fluids to the surface, and, when it possesses certain characteristics, it provides a wellbore medium suitable for some electrical, acoustic, and nuclear well-logging measurements. |
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