Methods for forming instrumented cutting elements of an earth-boring drilling tool
First Claim
1. A method of forming an instrumented cutting element, the method comprising:
- forming a free-standing sintered diamond table by performing a first high temperature, high pressure (HTHP) sintering process, the free-standing sintered diamond table having at least one chamber extending from a surface thereof only partially into the free-standing sintered diamond table;
providing an electrically conductive doped diamond material within the at least one chamber after formation of the free-standing sintered diamond table and performing a second HTHP sintering process; and
attaching a substrate to the free-standing sintered diamond table such that the electrically conductive doped diamond material in the at least one chamber is electrically coupled with a conductive material at an interface of the free-standing sintered diamond table and the substrate.
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Accused Products
Abstract
A method of forming an instrumented cutting element comprises forming a free-standing sintered diamond table having at least one chamber in the free-standing sintered diamond table, providing a doped diamond material within the at least one chamber, and attaching a substrate to the free-standing sintered diamond table to form an instrumented cutting element. The instrumented cutting element includes the doped diamond material disposed within the sintered diamond table on the substrate. A method of forming an earth-boring tool comprises attaching at least one instrumented cutting element to a body of an earth-boring tool. The at least one instrumented cutting element has a diamond table bonded to a substrate. The diamond table has at least one sensing element disposed at least partially within the diamond table. The at least one sensing element comprises a doped diamond material.
42 Citations
20 Claims
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1. A method of forming an instrumented cutting element, the method comprising:
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forming a free-standing sintered diamond table by performing a first high temperature, high pressure (HTHP) sintering process, the free-standing sintered diamond table having at least one chamber extending from a surface thereof only partially into the free-standing sintered diamond table; providing an electrically conductive doped diamond material within the at least one chamber after formation of the free-standing sintered diamond table and performing a second HTHP sintering process; and attaching a substrate to the free-standing sintered diamond table such that the electrically conductive doped diamond material in the at least one chamber is electrically coupled with a conductive material at an interface of the free-standing sintered diamond table and the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of forming an earth-boring tool, the method comprising:
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forming at least one instrumented cutting element by; performing a first high temperature, high pressure (HTHP) sintering process to form a free-standing sintered diamond table having at least one chamber at least substantially entirely enclosed by the free-standing sintered diamond table; providing a doped diamond material within the at least one chamber after formation of the free-standing sintered diamond table to form at least one sensing element; performing a second HTHP sintering process on the doped diamond material and the sintered diamond table; and attaching a substrate to the free-standing sintered diamond table with the doped diamond material within the at least one chamber to form the at least one instrumented cutting element such that the doped diamond material is at least substantially entirely embedded within the sintered diamond table on the substrate; and attaching at least one instrumented cutting element to a body of an earth-boring tool. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification