发明名称 |
Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks |
摘要 |
A diamond cutter for use in a drill bit having a geometric size and shape normally characterized by unleached diamond product, such as STRATAPAX diamond cutters, can be fabricated by assembling a plurality of prefabricated leached polycrystalline diamond (PCD) elements in an array in a cutting slug. A cutting slug is formed of matrix material which in one embodiment is impregnated with diamond grit. The cutting face of the cutting slug is characterized by exposing at least one surface of each of the PCD elements disposed therein. The diamonds may be set within the cutting slug either in a compact touching array or in a spaced-apart relationship. More than one type of array may also be employed within a single cutting slug. The PCD elements can assume a variety of polyhedral shapes such as triangular prismatic elements, rectangular elements, hexagonal elements and the like. The plurality of diamond elements and the cutting slug are fabricated using hot pressing or infiltration techniques.
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申请公布号 |
US5028177(A) |
申请公布日期 |
1991.07.02 |
申请号 |
US19890399372 |
申请日期 |
1989.08.24 |
申请人 |
EASTMAN CHRISTENSEN COMPANY |
发明人 |
MESKIN, ALEXANDER K.;MERRILL, LEO;PAY, CLIFFORD R. |
分类号 |
E21B10/56;E21B10/567 |
主分类号 |
E21B10/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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