US Patent 7398840 Matrix drill bits and method of manufacture
Patent 7398840 was granted and assigned to Halliburton on July, 2008 by the United States Patent and Trademark Office.
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A matrix drill bit and method of manufacturing a matrix bit body from a composite of matrix materials is disclosed. Two or more different types of matrix materials may be used to form a composite matrix bit body. A first matrix material may be selected to provide optimum fracture resistance (toughness) and optimum erosion, abrasion and wear resistance for portions of a matrix bit body such as cutter sockets, cutting structures, blades, junk slots and other portions of the bit body associated with engaging and removing formation materials. A second matrix material may be selected to provide desired infiltration of hot, liquid binder material with the first matrix material to form a solid, coherent, composite matrix bit body.
US Patent 07398840 Matrix drill bits and method of manufacture US Patent 7398840 Matrix drill bits and method of manufacture
US Patent 07398840 Matrix drill bits and method of manufacture
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