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    Earth-boring bit with improved bearing seal
    11.
    发明专利
    Earth-boring bit with improved bearing seal 未知

    公开(公告)号：GB2332461B

    公开(公告)日：2002-10-30

    申请号：GB9827666

    申请日：1998-12-17

    Applicant: BAKER HUGHES INC

    Inventor： ZAHRADNIK ANTON F ,  SULLIVAN ERIC CHARLES ,  LIN CHIH ,  KOLTERMANN TERRY ,  SCHMIDT SCOTT RAY

    IPC: E21B10/22 ,  E21B10/25 ,  F16J15/34

    Abstract: An earth-boring bit has a bit body and at least one bearing shaft depending inwardly and downwardly from the bit body. The bearing shaft has a base where it joins the bit body. At least one cutter is mounted for rotation on the bearing shaft and has radial and axial surfaces that cooperate with the base of the bearing shaft to define a bearing seal gland. A bearing is defined between the cutter and bearing shaft. A seal element is disposed in the seal gland. A secondary seal is disposed in the seal gland opposite the cutter axial surface and cooperates with the seal element to at least partially seal the gland against entry of debris from the exterior of the bit.

    Earth boring bit with improved seal
    12.
    发明专利
    Earth boring bit with improved seal 未知

    公开(公告)号：GB2332461A

    公开(公告)日：1999-06-23

    申请号：GB9827666

    申请日：1998-12-17

    Applicant: BAKER HUGHES INC

    Inventor： ZAHRADNIK ANTON F ,  SULLIVAN ERIC ,  LIN CHIH ,  KOLTERMANN TERRY ,  SCHMIDT SCOTT

    IPC: E21B10/22 ,  E21B10/25 ,  F16J15/34

    Abstract: An earth-boring bit comprises a bit body, at least one bearing shaft (30) depending inwardly and downwardly from the bit body, a cutter (33) mounted for rotation on each shaft, a bearing seal gland (37) cooperating with the base of the bearing shaft, a seal element (49,51) and a secondary static resilient seal element (55) disposed in the gland and cooperating with each other to at least partially seal the gland against entry of matter. The seal element may include a resilient energiser ring (51) and a rigid seal ring (49) which cooperates with a seal surface (41) on the cutter (33). The secondary seal element (55) may be made from an elastomeric material and may be formed as a ring. It may be attached or adjacent to a surface (39) of the bit body. It may contact and seal on at least the rigid part of the seal element. A mineral oil may be disposed between the bit body surface and the secondary seal element.

    ENHANCED BACKUP RING EDGE FEATURES FOR METAL FACE SEAL IN ROLLER CONE DRILL BITS
    13.
    发明申请
    ENHANCED BACKUP RING EDGE FEATURES FOR METAL FACE SEAL IN ROLLER CONE DRILL BITS 审中-公开
    金属表面密封件的增强型背衬环边缘特征在滚子锥形钻头

    公开(公告)号：WO2014124246A3

    公开(公告)日：2014-12-31

    申请号：PCT/US2014015287

    申请日：2014-02-07

    Applicant: BAKER HUGHES INC

    Inventor： LIN CHIH ,  KOLTERMANN TERRY J ,  ZAHRADNIK ANTON F ,  RICKS GREGORY L

    IPC: E21B10/08 ,  E21B10/22

    CPC classification number: E21B10/25 ,  E21B2010/225 ,  F16J15/328 ,  F16J15/3284 ,  F16J15/344

    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.

    Abstract translation: 用于辊锥形钻头中的面密封件的支撑环被配置为抵抗与备用环的暴露面相邻的钻井液的磨损。 部件从各种形状的露出端面移除，同时材料的硬度增加。 材料的去除抵消了由于弯曲而将通过表面密封组件上的支撑环传递的力的增加。 可以可选地在去除的材料位置中包括弹簧。 另一种方法是增加所有或部分暴露边缘的边缘密度，同时通过使用电子束辐射不影响内部部分以增加交联密度，或通过允许具有更持久的边缘区域的整体结构的其它技术来增加边缘密度。

    DOWNHOLE TOOLS HAVING MECHANICAL JOINTS WITH ENHANCED SURFACES, AND RELATED METHODS
    14.
    发明申请
    DOWNHOLE TOOLS HAVING MECHANICAL JOINTS WITH ENHANCED SURFACES, AND RELATED METHODS 审中-公开
    具有加强表面的机械接头的下车工具及相关方法

    公开(公告)号：WO2012149272A2

    公开(公告)日：2012-11-01

    申请号：PCT/US2012035388

    申请日：2012-04-27

    Applicant: BAKER HUGHES INC ,  LIN CHIH ,  SCOTT DANNY E

    Inventor： LIN CHIH ,  SCOTT DANNY E

    IPC: E21B17/04 ,  E21B10/46 ,  E21B17/02

    CPC classification number: E21B10/22 ,  E21B4/02 ,  E21B43/128

    Abstract: A downhole tool may comprise a mechanical joint and a diamond-like coating over at least a portion of a surface of at least one component of the mechanical joint, the diamond-like coating having a thickness greater than 10 micrometers. Methods of manufacturing a mechanical joint of a downhole tool may comprise disposing a diamond-like coating on at least a portion of a surface of a component of the mechanical joint of the downhole tool to a thickness of at least 10 microns and at a temperature less than about 200°C.

    Abstract translation: 井下工具可以包括在机械接头的至少一个部件的表面的至少一部分上的机械接头和类金刚石涂层，类金刚石涂层的厚度大于10微米。 制造井下工具的机械接头的方法可以包括将钻石状涂层设置在井下工具的机械接头的部件的表面的至少一部分上，其厚度为至少10微米，并且在较小的温度 比约200℃。

    MICROPORE ENGAGEMENT SURFACES FOR EARTH BORING BIT
    16.
    发明申请
    MICROPORE ENGAGEMENT SURFACES FOR EARTH BORING BIT 审中-公开
    微波接触表面接地镗孔

    公开(公告)号：WO2006060608A3

    公开(公告)日：2006-09-08

    申请号：PCT/US2005043533

    申请日：2005-12-02

    Applicant: BAKER HUGHES INC

    Inventor： LIN CHIH ,  SULLIVAN ERIC CHARLES

    IPC: E21B10/22 ,  E21B10/24

    CPC classification number: E21B10/24 ,  F16C33/102 ,  F16C2240/40 ,  F16C2240/44

    Abstract: An earth boring bit has sliding engaging surfaces between a cone assembly and a bearing pin. Micropores (57) are formed in at least one of the engaging surfaces (53). Each of the micropores (57) has a leading portion (61) and a trailing portion (63). The leading portion is at a more gradual slope than the trailing portion. The micropores are located in a pattern of a greater density in a region of the engaging surfaces that operate at higher pressures than in other regions.

    Abstract translation: 地镗头在锥形组件和轴承销之间具有滑动接合表面。 微孔（57）形成在至少一个接合表面（53）中。 每个微孔（57）具有引导部分（61）和尾部部分（63）。 前导部分处于比后部更渐进的斜度。 在比其他区域更高的压力操作的接合表面的区域中，微孔位于较大密度的图案中。

    ENHANCED BACKUP RING FEATURES FOR METAL FACE SEAL IN ROLLER CONE DRILL BITS
    17.
    发明申请
    ENHANCED BACKUP RING FEATURES FOR METAL FACE SEAL IN ROLLER CONE DRILL BITS 审中-公开
    用于金属表面密封的增强型支撑环特征

    公开(公告)号：WO2014124248A3

    公开(公告)日：2015-01-08

    申请号：PCT/US2014015289

    申请日：2014-02-07

    Applicant: BAKER HUGHES INC

    Inventor： LIN CHIH ,  KOLTERMANN TERRY J ,  ZAHRADNIK ANTON F ,  FLORES ALEJANDRO ,  RICKS GREGORY L

    IPC: E21B10/08 ,  E21B10/22

    CPC classification number: E21B10/25

    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring, Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.

    Abstract translation: 用于辊锥形钻头中的面密封件的支撑环被配置为抵抗来自邻近的支撑环的暴露表面的钻井液的磨损，部分以各种形状从暴露的端面移除，同时材料的硬度增加 。 材料的去除抵消了由于弯曲而将在面密封组件上通过支撑环传递的力的增加。 可以可选地在去除的材料位置中包括弹簧。 另一种方法是增加所有或部分暴露边缘的边缘密度，同时通过使用电子束辐射不影响内部部分以增加交联密度，或通过允许具有更持久的边缘区域的整体结构的其它技术来增加边缘密度。

    SYNERGIC SURFACE MODIFICATION FOR BEARING SEAL
    19.
    发明申请
    SYNERGIC SURFACE MODIFICATION FOR BEARING SEAL 审中-公开
    用于轴承密封的合成表面改性

    公开(公告)号：WO2011028427A2

    公开(公告)日：2011-03-10

    申请号：PCT/US2010045972

    申请日：2010-08-19

    Applicant: BAKER HUGHES INC ,  LIN CHIH ,  DICK AARON J

    Inventor： LIN CHIH ,  DICK AARON J

    IPC: E21B10/22 ,  E21B10/25 ,  E21B10/50

    CPC classification number: E21B10/25 ,  F16J15/3424 ,  F16J15/344 ,  Y10T29/49885

    Abstract: The present invention relates to a method and apparatus for forming a dynamic seal between two surfaces (136, 140). More specifically, the invention relates to creating a textured surface (166) with a thin, hard coating (176) on a metallic annular sealing ring (170) such as the sealing ring used in an earth boring drill bit (100).

    Abstract translation: 本发明涉及用于在两个表面（136,140）之间形成动态密封件的方法和装置。 更具体地，本发明涉及在金属环形密封环（170）上形成具有薄的硬质涂层（176）的纹理表面（166），例如用于钻孔钻头（100）中的密封环。

    ENGINEERED BEARING SURFACE FOR ROCK DRILLING BIT
    20.
    发明申请
    ENGINEERED BEARING SURFACE FOR ROCK DRILLING BIT 审中-公开
    用于钻探钻头的工程轴承表面

    公开(公告)号：WO2010078182A3

    公开(公告)日：2010-08-26

    申请号：PCT/US2009069373

    申请日：2009-12-23

    Applicant: BAKER HUGHES INC ,  LIN CHIH ,  DICK AARON J

    Inventor： LIN CHIH ,  DICK AARON J

    IPC: E21B10/22 ,  C09D163/00 ,  C09D175/04

    CPC classification number: E21B10/22 ,  Y10T29/49986

    Abstract: A drill bit bearing having a treated surface and method for preparing the same is provided. The method includes the steps of polishing at least one contacting surface of the bearing with an abrasive paste to a finish of less than about 10 µin Ra. The surface of the polishing instrument has a coating that includes a mixture of an epoxy cement and a polymer.

    Abstract translation: 提供了一种具有处理过的表面的钻头轴承及其制造方法。 该方法包括以下步骤：用研磨膏将轴承的至少一个接触表面抛光至小于约10μinRa的表面。 抛光工具的表面具有包含环氧树脂水泥和聚合物的混合物的涂层。

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