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    • 13. 发明授权
    • Diamond enhanced insert for rolling cutter bit
    • 金刚石增强刀片用于滚刀刀头
    • US6105694A
    • 2000-08-22
    • US106981
    • 1998-06-29
    • Danny Eugene Scott
    • Danny Eugene Scott
    • E21B10/56E21B10/567E21B10/573E21B10/46
    • E21B10/5673E21B10/5735
    • An earth-boring bit has a bit body and a cantilevered bearing shaft depending from the bit body. The cutter is mounted for rotation on the bearing shaft. Cutting elements are secured within holes formed in the cutter. At least some of the cutting elements include a body of hard metal which has a cylindrical base inserted in an interference fit within one of the holes. The body has a contact surface on its cutting end. A layer of super-hard material is bonded to the contact surface to provide a tip for the cutting end. The layer may be formed of a free-standing film of diamond which is brazed to the contact surface. It may also be formed with a high temperature, high pressure process directly onto the body of tungsten carbide.
    • 一个钻头有一个位体和一个悬臂轴承轴,取决于钻头体。 刀具安装在轴承轴上旋转。 切割元件固定在切割器中形成的孔内。 至少一些切割元件包括硬质金属体,其具有插入在一个孔内的过盈配合中的圆柱形基座。 身体在其切割端具有接触表面。 一层超硬材料结合到接触表面以提供切割端的尖端。 该层可以由钎焊到接触表面的金刚石的独立膜形成。 也可以直接在碳化钨体上形成高温,高压的工艺。
    • 17. 发明授权
    • Diamond enhanced bearing for earth-boring bit
    • 钻孔增强轴承用于钻孔钻头
    • US6068070A
    • 2000-05-30
    • US923009
    • 1997-09-03
    • Danny Eugene Scott
    • Danny Eugene Scott
    • E21B10/22E21B10/46
    • E21B10/22F16C33/043F16C2206/04F16C2352/00
    • An earth-boring bit is formed having a bit body in a cantilevered bearing shaft that depends from the bit body. The bearing shaft is provided with a journal bearing surface. A cutter is mounted to the bearing shaft and has a mating bearing surface for engagement with the journal bearing surface of the bearing shaft. Provided on the bearing shaft is a layer of diamond film that is formed by chemical vapor deposition (CVD) as a free standing film. This layer of diamond film is brazed to the bearing shaft so that it forms the journal bearing surface. By utilizing the CVD methods of forming diamond film, the bearing surface can be formed in a variety of shapes and contours and with a surface texture or configuration as desired.
    • 在钻头体上形成有悬臂轴承轴上的钻头体的钻头。 轴承轴设有轴颈轴承表面。 切割器安装在轴承轴上并且具有用于与轴承轴的轴颈轴承表面接合的配合轴承表面。 在轴承轴上设置有通过化学气相沉积(CVD)形成的金刚石膜作为自立式膜。 该金刚石膜层被钎焊到轴承轴上,从而形成轴颈轴承表面。 通过利用形成金刚石膜的CVD方法,可以根据需要以各种形状和轮廓以及表面纹理或构造形成支承表面。
    • 18. 发明授权
    • Rolling cutter bit with shear cutting gage
    • 滚动切割刀具剪切规格
    • US6050354A
    • 2000-04-18
    • US909974
    • 1997-08-12
    • Rudolf Carl Otto PessierDanny Eugene ScottRobert Earl Grimes
    • Rudolf Carl Otto PessierDanny Eugene ScottRobert Earl Grimes
    • E21B10/16E21B10/50E21B10/52E21B10/56E21B10/567E21B10/573E21B17/10E21B10/46
    • E21B10/567E21B10/16E21B10/50E21B10/52E21B10/5673E21B10/5735E21B17/1092
    • An earth-boring bit of the rolling cutter variety is provided with hard gage inserts that protrude from the gage surface of the cutter to engage the side of the borehole for holding gage. The gage insert has a substantially flat face with sharp cutting edges formed thereon and has cutting surfaces that define a negative rake angle with respect to the sidewall of the borehole that is being sheared by the gage insert. The cutting surfaces are comprised of multiple chamfers. The face, cutting edge, and cutting surfaces of the gage insert are formed of a super-hard and abrasion-resistant material such as polycrystalline diamond or cubic boron nitride. The body of the insert is formed of a hard, fracture-tough material such as cemented tungsten carbide. The improved gage inserts provide an actively cutting gage surface that engages the sidewall of the borehole to promote shearing removal of the sidewall material. Such an improved gage insert provides an earth-boring bit with improved gage-holding ability, and improved steerability in directional drilling operations.
    • 轧制刀具的钻孔位置设置有从量规表面突出的硬量规插入件以与用于保持量具的钻孔侧接合。 量具插入件具有基本上平坦的表面,其上形成有锋利的切割边缘,并且具有切割表面,该切割表面相对于正在被计量插入件剪切的钻孔的侧壁限定负的前角。 切割表面由多个倒角组成。 量具插入件的表面,切削刃和切削表面由超硬耐磨材料形成,例如多晶金刚石或立方氮化硼。 插入物的主体由硬质的,断裂韧性的材料形成,如硬质合金碳化物。 改进的量规插入件提供与钻孔的侧壁接合的主动切割表面,以促进侧壁材料的剪切移除。 这种改进的量规插入件提供了具有改进的量具保持能力的钻孔钻头,并且在定向钻井操作中提高了可操纵性。
    • 20. 发明授权
    • Earth-boring bit with shear cutting gage
    • 带切割量规的钻孔钻头
    • US5655612A
    • 1997-08-12
    • US468215
    • 1995-06-06
    • Robert Earl GrimesDanny Eugene ScottRudolf Carl Otto Pessier
    • Robert Earl GrimesDanny Eugene ScottRudolf Carl Otto Pessier
    • E21B10/16E21B10/50E21B10/52E21B10/56E21B10/567E21B10/573E21B17/10E21B10/46E21B12/04
    • E21B10/567E21B10/16E21B10/50E21B10/52E21B10/5673E21B10/5735E21B17/1092
    • An earth-boring bit is provided with hard gage inserts that protrude from the gage surface of the cutter to engage the side of the borehole for holding gage. The cutting end of the gage insert has a cutting end defining at least one sharp cutting edge and at least one cutting surface that define a negative rake angle with respect to the sidewall of the borehole that is being sheared by the gage insert. The cutting end, cutting edge, and cutting surface of the gage insert are formed of a super-hard and abrasion-resistant material such as polycrystalline diamond or cubic boron nitride. The body of the insert is formed of a hard, fracture-tough material such as cemented tungsten carbide. The improved gage inserts provide an actively cutting gage surface that engages the sidewall of the borehole to promote shearing removal of the sidewall material. Such an improved gage insert provides an earth-boring bit with improved gage-holding ability, and improved steerability in directional drilling operations.
    • 设有一个钻孔位置,其具有从切割器的表面突出的硬量规插入件以接合用于保持量具的钻孔侧。 量具插入件的切割端具有限定至少一个锋利的切割边缘和至少一个切割表面的切割端,该至少一个切割表面相对于被孔规插入件剪切的钻孔的侧壁限定负的前角。 量具插入件的切割端,切割刃和切割表面由超硬耐磨材料形成,例如多晶金刚石或立方氮化硼。 插入物的主体由硬质的,断裂韧性的材料形成,如硬质合金碳化物。 改进的量规插入件提供与钻孔的侧壁接合的主动切割表面,以促进侧壁材料的剪切移除。 这种改进的量规插入件提供了具有改进的量具保持能力的钻孔钻头,并且在定向钻井操作中提高了可操纵性。