公开(公告)号：US06578647B2

公开(公告)日：2003-06-17

申请号：US09915014

申请日：2001-07-25

申请人： Nigel M. Page ,  Philip D. Embury

发明人： Nigel M. Page ,  Philip D. Embury

IPC分类号： E21B1024

CPC分类号： E21B10/25

摘要： A sealing structure for a rock drill bit includes an elastomeric diaphragm for installation in the drill bit so as to separate grease from drilling mud. The diaphragm has an aperture extending through it, and a plug is disposed in the aperture so as to form a mechanical seal with a wall of the aperture. The plug has a channel therethrough which is normally held sealed by a face of the aperture in the diaphragm. If the pressure of the grease exceeds pressure in mud on the other side of the diaphragm by more than a critical value, the diaphragm aperture deforms and allows grease to move through the plug channel and escape. The critical value can be varied by using, with the same diaphragm, plugs having different numbers, sizes and axial positions of plug channels.

公开(公告)号：US06568489B1

公开(公告)日：2003-05-27

申请号：US09836741

申请日：2001-04-17

申请人： Charles D. Hailey

发明人： Charles D. Hailey

IPC分类号： E21B1024

CPC分类号： E21B4/003 ,  Y10S415/903

摘要： A lubricant ejector used downhole has a reservoir holding replenishment lubricant, and it includes a driver to eject at least a portion of the lubricant. A flow coupler connected to the ejector channels lubricant to a connected apparatus. One specific ejector includes a hollow rotor of a downhole motor, and a specific flow coupler includes a cross-channel diverter that directs lubricant from the hollow interior of the rotor to a bearing pack and that directs drilling fluid, used to drive the motor and create pressure that moves a piston in the rotor, from outside the rotor to inside a passageway through the bearing pack. A method includes injecting lubricant from a reservoir in the downhole motor into the bearing pack as the downhole motor operates.

摘要翻译： 井下使用的润滑剂喷射器具有保持补充润滑剂的储存器，并且其包括用于喷射至少一部分润滑剂的驱动器。 连接到喷射器通道的流动联接器将润滑剂润滑至连接的装置。 一个具体的喷射器包括井下电动机的空心转子，特定的流动耦合器包括一个交叉通道分流器，其将润滑剂从转子的中空内部引导到轴承组，并引导用于驱动电动机的钻井液，并产生 将转子中的活塞从转子外部移动到穿过轴承组件的通道内部的压力。 一种方法包括当井下电动机工作时将润滑剂从井下电动机中的储存器注入到轴承组中。

公开(公告)号：US06789634B1

公开(公告)日：2004-09-14

申请号：US10446410

申请日：2003-05-28

申请人： Robert Denton

发明人： Robert Denton

IPC分类号： E21B1024

CPC分类号： E21B10/25 ,  F16J15/162 ,  Y10S277/91 ,  Y10S277/938

摘要： O-ring seals for rock bit bearings comprise a body formed from an elastomeric material having a lubricant additive in at least the dynamic seal surface to reduce the coefficient of friction and stick-slip amplitude at O-ring seal surfaces. The lubricant additive comprises polarized graphite. O-ring seals made from elastomeric compositions comprise in the range of from about 50 to 99 percent by volume elastomeric material, and in the range of from about 1 to 50 percent by volume of the polarized graphite based on the total volume of the composition. Preferably, the polarized graphite is in the range of from 7 to 25 percent by volume. As the O-ring seal experiences wear from adjacent metal surfaces, flakes of polarized graphite are released from the O-ring seal and adhere to the adjacent metal surfaces and form a lubricating film.

摘要翻译： 用于岩石钻头轴承的O形圈密封件包括由在至少动态密封表面中具有润滑剂添加剂的弹性体材料形成的主体，以减小O形圈密封表面处的摩擦系数和粘滑性。 润滑添加剂包括极化石墨。 基于组合物的总体积，由弹性体组合物制成的O形密封圈包含在约50至99体积％的弹性体材料的范围内，并且在约1-50体积％的极化石墨的范围内。 偏振石墨的体积优选为7〜25体积％。 由于O型圈密封件经历相邻金属表面的磨损，极化石墨薄片从O型圈密封件中释放出来并粘附到相邻的金属表面并形成润滑膜。

公开(公告)号：US06206110B1

公开(公告)日：2001-03-27

申请号：US09487947

申请日：2000-01-18

申请人： Robert H. Slaughter, Jr. ,  Peter T. Cariveau ,  Kirk A. Norris ,  Roger Didericksen ,  William M. Conn

发明人： Robert H. Slaughter, Jr. ,  Peter T. Cariveau ,  Kirk A. Norris ,  Roger Didericksen ,  William M. Conn

IPC分类号： E21B1024

CPC分类号： E21B10/003 ,  E21B10/18 ,  E21B10/24

摘要： A rotary cone rock bit, comprises a bit body including a plurality of legs extending therefrom, each of the legs having an outer surface that includes a leading surface and a trailing surface, a roller cone rotatably supported on each of the legs, a bearing system between each cone and the leg on which it is supported, and a lubricant reservoir in fluid communication with the bearing system. The reservoir can be provided with a wear resistant plug, if desired. In the present bit, the reservoir can be pressured-balanced with fluid in the bit plenum or the borehole annulus, or maintained at some desired differential with respect to either of these. Alternatively, the reservoir can be formed inside the bit body, preferably by means of a canister, which can be provided with venting means as desired.

摘要翻译： 一种旋转锥形岩石钻头，包括一个钻头体，其包括从其延伸的多个腿，每个腿具有包括前表面和后表面的外表面，可旋转地支撑在每个腿上的滚子圆锥体，轴承系统 在每个锥体和其所支撑的腿部之间，以及与轴承系统流体连通的润滑剂储存器。 如果需要，储存器可以设置有耐磨塞。 在现在的位，储存器可以与钻头压力室或钻孔环中的流体进行加压平衡，或者相对于这些中的任何一个保持在某种所需的差别。 或者，储存器可以形成在钻头体内，优选地通过罐，其可以根据需要设置有排气装置。

公开(公告)号：US06405811B1

公开(公告)日：2002-06-18

申请号：US09663604

申请日：2000-09-18

申请人： Ed G. Borchardt

发明人： Ed G. Borchardt

IPC分类号： E21B1024

CPC分类号： E21B10/23

摘要： A solid lubricant is added to the internal passages of an air cooled bit such that the air erodes, or ablates, the solid lubricant into the air stream. Compressed air travels down the drill stem to the bit. The air passes through an air tube into the main air passage where the solid lubricant has been placed. As the air passes the solid lubricant, it erodes the solid lubricant. The solid lubricant particles ablated into the air stream travel through the ball passage into the journal air passage and out to the bearing surfaces between the cutter and the journal. The air stream both cools the surfaces and deposits the solid lubricant to reduce the friction between the bearing surfaces.

摘要翻译： 在空气冷却钻头的内部通道中加入固体润滑剂，使得空气将固体润滑剂侵蚀或烧蚀到空气流中。 压缩空气沿钻杆向下行进。 空气通过空气管进入已经放置固体润滑剂的主空气通道。 当空气通过固体润滑剂时，它会侵蚀固体润滑剂。 烧蚀到空气流中的固体润滑剂颗粒通过球形通道进入轴颈空气通道，并移出到切割器和轴颈之间的轴承表面。 空气流既冷却表面并沉积固体润滑剂，以减少支承表面之间的摩擦。

公开(公告)号：US06202766B1

公开(公告)日：2001-03-20

申请号：US09275747

申请日：1999-03-24

申请人： William L. Shepherd

发明人： William L. Shepherd

IPC分类号： E21B1024

CPC分类号： F16K15/147 ,  E21B10/24 ,  F16C33/6625 ,  F16C33/6651 ,  F16C33/667 ,  F16C33/6674 ,  F16C2352/00 ,  Y10T137/7881 ,  Y10T137/7895

摘要： In a drill bit which has a reservoir for storing a supply of lubricant, generally grease, a lubricant passage is formed for flow of lubricant from the reservoir to the bearing. A relief port is formed in the drill bit body to connect at least one of the reservoir and the lubricant passage with an outside surface of the drill bit body. A normally-closed relief valve is mounted in the relief port to selectively permit fluid flow through the relief port and protect the lubrication system against changes in pressure, especially increases in pressure on the grease side, such as might be caused by thermal expansion of the grease or the production of off-gases by the grease. The valve is provided in the form of a small screw-in unit capable of separate manufacture and testing and comprises a valve body carrying a flexible diaphragm element. Venting is provided via a puncture in the diaphragm element. The valve can be varied in construction to provide venting in one or both directions at predetermined pressure differences, which need not be the same in both directions.

摘要翻译： 在具有用于存储润滑剂供应源（通常为油脂）的储存器的钻头中，形成润滑剂通道用于使润滑剂从储存器流动到轴承。 在钻头体中形成有一个释放口，用于将储存器和润滑剂通道中的至少一个与钻头体的外表面相连接。 常闭安全阀安装在排放口中，以选择性地允许流体流过排放口，并保护润滑系统免受压力变化，特别是润滑脂侧压力增加，例如可能由于 润滑脂或通过润滑脂生产废气。 该阀被设置成能够分开制造和测试的小型螺旋装置的形式，并且包括承载柔性隔膜元件的阀体。 通过隔膜元件中的穿刺来提供通气。 阀可以在结构上变化以在一个或两个方向上以预定的压力差进行排气，其在两个方向上不必相同。

公开(公告)号：US06698536B2

公开(公告)日：2004-03-02

申请号：US10079919

申请日：2002-02-20

申请人： David P. Moran ,  Gary R. Portwood

发明人： David P. Moran ,  Gary R. Portwood

IPC分类号： E21B1024

CPC分类号： E21B10/24 ,  E21B12/02 ,  E21B47/1025 ,  F16N29/00 ,  F16N2250/06 ,  F16N2250/30

摘要： A roller cone drill bit is disclosed which includes at least one roller cone rotatably mounted to a bit body. The bit body includes therein a lubricant reservoir adapted to supply lubricant to bearings on which the roller cone rotates about the bit body. The bit includes a sensor adapted to detect drilling fluid contamination of the lubricant. The bit includes a processor/transmitter operatively coupled to the sensor and adapted to communicate signals corresponding to detected contamination.

摘要翻译： 公开了一种滚子锥形钻头，其包括可旋转地安装到钻头体上的至少一个滚子锥体。 钻头体中包括适于将润滑剂供应到滚子锥体围绕钻头体旋转的轴承的润滑剂储存器。 该钻头包括适于检测钻井液污染润滑剂的传感器。 该位包括可操作地耦合到传感器并且适于传送对应于检测到的污染的信号的处理器/发射器。

公开(公告)号：US06460635B1

公开(公告)日：2002-10-08

申请号：US09696694

申请日：2000-10-25

申请人： Manmohan S. Kalsi ,  Dezso Somogyi ,  Lannie L. Dietle

发明人： Manmohan S. Kalsi ,  Dezso Somogyi ,  Lannie L. Dietle

IPC分类号： E21B1024

CPC分类号： F16C33/108 ,  E21B10/22 ,  E21B10/24 ,  F16C17/035 ,  F16C17/065 ,  F16C27/02 ,  F16C33/102 ,  F16C2352/00

摘要： A load responsive hydrodynamic bearing is provided in the form of a thrust bearing or journal bearing for supporting, guiding and lubricating a relatively rotatable member to minimize wear thereof responsive to relative rotation under severe load. In the space between spaced relatively rotatable members and in the presence of a liquid or grease lubricant, one or more continuous ring shaped integral generally circular bearing bodies each define at least one dynamic surface and a plurality of support regions. Each of the support regions defines a static surface which is oriented in generally opposed relation with the dynamic surface for contact with one of the relatively rotatable members. A plurality of flexing regions are defined by the generally circular body of the bearing and are integral with and located between adjacent support regions. Each of the flexing regions has a first beam-like element being connected by an integral flexible hinge with one of the support regions and a second beam-like element having an integral flexible hinge connection with an adjacent support region. A least one local weakening geometry of the flexing region is located intermediate the first and second beam-like elements. In response to application of load from one of the relatively rotatable elements to the bearing, the beam-like elements and the local weakening geometry become flexed, causing the dynamic surface to deform and establish a hydrodynamic geometry for wedging lubricant into the dynamic interface.

摘要翻译： 负载响应流体动力轴承以推力轴承或轴颈轴承的形式提供，用于支撑，引导和润滑相对可旋转的构件，以使其在严重负载下相对旋转时的磨损最小化。 在间隔的相对旋转的构件之间的空间中，并且在存在液体或润滑脂润滑剂的情况下，一个或多个连续的环形整体的大体上圆形的承载体各限定至少一个动态表面和多个支撑区域。 每个支撑区域限定静态表面，该静态表面与动态表面大致相对地定向，以与相对可旋转的构件之一接触。 多个弯曲区域由轴承的大致圆形的主体限定，并且与相邻的支撑区域成一体并且位于相邻的支撑区域之间。 每个弯曲区域具有通过整体的柔性铰链与支撑区域中的一个连接的第一梁状元件和具有与相邻支撑区域的整体的柔性铰链连接的第二梁状元件。 弯曲区域的至少一个局部弱化几何形状位于第一和第二束状元件的中间。 响应于从相对可旋转元件中的一个施加负载到轴承，梁状元件和局部弱化几何形状变形，导致动态表面变形并建立用于将润滑剂楔入动态界面的流体动力学几何形状。

公开(公告)号：US06722449B2

公开(公告)日：2004-04-20

申请号：US10130240

申请日：2002-07-31

申请人： Helmut Lebisch ,  Otto Baumann ,  Rolf Mueller ,  Dietmar Saur

发明人： Helmut Lebisch ,  Otto Baumann ,  Rolf Mueller ,  Dietmar Saur

IPC分类号： E21B1024

CPC分类号： B25D17/26 ,  B25D2250/185

摘要： A machine tool, in particular to a hand-operated hammer drill, having a compartment containing lubricant and a device for compensation of the pressure in the compartment in the area of a bearing of a component able to be driven so as to allow rotation. It is proposed that the bearing form at least a part of a lubricant seal of the pressure-compensation device via which a pressure in the compartment as able to be compensated.

摘要翻译： 一种机床，特别是一种手动锤钻，具有包含润滑剂的隔室和用于补偿能够被驱动以允许旋转的部件的轴承区域中的隔室中的压力的​​装置。 建议轴承形成压力补偿装置的润滑油密封件的至少一部分，通过该压力补偿装置可以补偿舱室内的压力。

公开(公告)号：US06390209B2

公开(公告)日：2002-05-21

申请号：US09796241

申请日：2001-02-28

申请人： William C. Saxman

发明人： William C. Saxman

IPC分类号： E21B1024

CPC分类号： E21B10/24

摘要： A pressure compensating assembly for use in roller cone drilling bits of the sealed bearing type. The compensating assembly includes a hollow body arranged to fit into a cavity in the bit connected with the lubrication system of the bit and the hollow body includes a normally open lubricant passageway extending therethrough. A seal encircles the body on one side of the lubricant passageway and is arranged to sealingly engage the bit and an elastomeric, cup-shaped diaphragm is located on the body and has a lip arranged to sealingly engage the bit on the other side of the lubricant passageway. The diaphragm having a protuberance on the side of the diaphragm facing the passageway and sized to enter and close the passageway. The body, seal, and diaphragm being assembled into a unitary cartridge for introduction into the bit as a unit.

摘要翻译： 用于密封轴承类型的滚子锥钻头的压力补偿组件。 补偿组件包括中空体，其被布置成装配在与钻头的润滑系统连接的钻头中的空腔中，并且中空体包括从其延伸穿过的常开润滑剂通道。 密封件在润滑剂通道的一侧上环绕主体并且被布置成密封地接合钻头，并且弹性的杯形隔膜位于主体上，并且具有唇部，其设置成密封地接合润滑剂另一侧上的钻头 通道。 隔膜在隔膜的面向通道的侧面具有突起，并且尺寸适于进入和关闭通道。 主体，密封件和隔膜被组装成一体式墨盒，用于作为一个单元引入钻头。