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    • 4. 发明申请
    • DRILLING HEAD
    • 钻头
    • WO1998027310A1
    • 1998-06-25
    • PCT/BE1997000135
    • 1997-12-16
    • DRESSER INDUSTRIES, INC.LAMINE, EtienneDELWICHE, Robert
    • DRESSER INDUSTRIES, INC.
    • E21B10/54
    • E21B10/54E21B10/46
    • The invention concerns a drilling head of the type used in particular for boring oil wells, comprising a central body (2), cutting blades (3) projecting from the body (2), both in front of it in a drilling direction and on the sides of this same body (2), and cutting elements (9) in each blade (3) distributed over a front external surface (10) and on a lateral external surface (11) for calibrating the well. In this drilling head are arranged as cutting elements: in a central zone (13) of the front surface (10), on at least one blade (3): at least one cutting tip (12) in synthetic polycrystalline diamond compact, and in a remaining zone (14) of the front surface (10) of this blade, located beyond said central zone (13) relative to the rotation axis, and on the other blades: thermoresistant synthetic diamonds and/or impregnated diamond particles.
    • 本发明涉及一种特别用于镗孔油井的钻头,包括中心体(2),从主体(2)突出的切割刀片(3),两者在其前方在钻孔方向上并且在 该同一主体(2)的侧面以及分布在前外表面(10)和侧外表面(11)上的每个叶片(3)中的切割元件(9),用于校准井。 在该钻头中布置有切割元件:在前表面(10)的中心区域(13)中,至少一个刀片(3)上:合成多晶金刚石致密体中的至少一个切割尖端(12) 该叶片的前表面(10)的相对于旋转轴线位于所述中心区域(13)之外的剩余区域(14),以及另一个叶片:耐热合成金刚石和/或浸渍的金刚石颗粒。
    • 5. 发明申请
    • INTEGRAL DRILLING TOOL BIT
    • 综合钻机工具
    • WO1997000372A1
    • 1997-01-03
    • PCT/FR1996000861
    • 1996-06-07
    • TOTALDB STRATABIT S.A.DELWICHE, RobertBESSON, Alain
    • TOTALDB STRATABIT S.A.
    • E21B10/56
    • E21B10/567E21B10/5673E21B10/573
    • An integral tool bit for drilling a rock formation, including a cemented metal carbide holder (30) attached to the tool and joined, e.g. soldered, to a plate (34) in the form of a cylindrical disc made from polycrystalline diamond particles and having a side wall (40) and a substantially flat free surface (36), said plate (34) being positioned so that the plane of its free flat surface (36) is at an acute angle ( alpha ) to the line (N) normal to the surface (25) of the rock formation, and said angle being directed in the same direction as the forward direction (F) of the drill bit so that the plate engages the rock formation with its side wall (40).
    • 一种用于钻探岩层的整体工具钻头,包括附接到工具上并连接的粘结金属碳化物夹持器(30)。 焊接到由多晶金刚石颗粒制成并具有侧壁(40)和基本平坦的自由表面(36)的圆柱形盘形式的板(34),所述板(34)被定位成使得 其自由平坦表面(36)与垂直于岩层表面(25)的线(N)成锐角(α),并且所述角度指向与前述方向(F)相同的方向 钻头使得板与其侧壁(40)接合岩层。