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    PCD face seal for earth-boring bit
    2.
    发明专利
    PCD face seal for earth-boring bit 未知

    公开(公告)号：GB2381020A

    公开(公告)日：2003-04-23

    申请号：GB0221634

    申请日：2002-09-17

    Applicant: BAKER HUGHES INC

    Inventor： LIN CHIH ,  KOLTERMANN TERRY ,  SCOTT DANNY E

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

    Abstract: An earth-boring bit has a mechanical face seal assembly with PCD faces. The bit has a bearing shaft 15 with a cone 16 rotatably mounted on the bearing shaft. The seal locates between the bearing shaft and the cone for sealing lubricant therein. The seal includes at least one rigid seal ring 21 having a carbide body and an annular PCD face 33 located on it. The mating face 35 may also be of a PCD material, and as shown is formed by an annular insert 23 which has a metal carbide body 36. An energizing elastomer forces the faces together and, elastomer 31 prevents the ingress of debris. Various configurations of the faces 33, 35 are disclosed, as is a method of forming the faces.

    ELASTOMER MATERIAL FOR HIGH TEMPERATURE ROLLER CONE BITS
    3.
    发明申请
    ELASTOMER MATERIAL FOR HIGH TEMPERATURE ROLLER CONE BITS 审中-公开
    用于高温滚子锥度的弹性材料

    公开(公告)号：WO2008131095A3

    公开(公告)日：2008-12-24

    申请号：PCT/US2008060621

    申请日：2008-04-17

    Applicant: BAKER HUGHES INC ,  KOLTERMANN TERRY ,  DICK AARON ,  LIN CHIH C

    Inventor： KOLTERMANN TERRY ,  DICK AARON ,  LIN CHIH C

    IPC: E21B10/25

    CPC classification number: E21B10/25

    Abstract: An earth boring bit has a bit body (13) with at least one bearing pin (15). A cone (16) is rotatably mounted on the bearing pin (15). A seal assembly (19) is located between the cone (16) and the bearing pin (15), the seal assembly (19) having at least one flexible seal member (25,31). A flexible pressure compensating diaphragm (17) is mounted in the body (13). The diaphragm (17) has one side adapted to be exposed to borehole fluids and another side in contact with lubricant contained in bearing spaces between the cone (16) and the bearing pin (15). The flexible seal member (25,31) and the diaphragm (17) are, formed of a fluprinated elastomer. The elastomer is either a perf luoroelastomer (FFKM) or a f luoroelastomer (FKM).

    Abstract translation: 地镗头具有带有至少一个轴承销（15）的钻头体（13）。 锥体（16）可旋转地安装在轴承销（15）上。 密封组件（19）位于锥体（16）和轴承销（15）之间，密封组件（19）具有至少一个柔性密封件（25,31）。 柔性压力补偿膜片（17）安装在主体（13）中。 隔膜（17）具有适于暴露于井眼流体的一侧，另一侧与容纳在锥体（16）和轴承销（15）之间的轴承空间中的润滑剂接触。 柔性密封构件（25,31）和隔膜（17）由氟化弹性体形成。 弹性体是全氟橡胶（FFKM）或氟橡胶（FKM）。

    4.
    发明专利
    未知

    公开(公告)号：AT470047T

    公开(公告)日：2010-06-15

    申请号：AT05769283

    申请日：2005-07-08

    Applicant: BAKER HUGHES INC

    Inventor： SMITH REDD ,  KOLTERMANN TERRY

    IPC: E21B10/22 ,  F16J15/16

    Abstract: A subterranean drill tool has a seal gland formed between a rotating and a static surface. An annular elastomeric seal is located in the gland in engagement with each of the surfaces. A property gradient is formed in at least part of the elastomeric material. The property gradient defines a property that changes from a first level at the surface to a second level in the interior of the seal. The elastomeric material within the property gradient has the same chemical composition as the rest of the seal.

    MATERIAL ELASTOMERO PARA BARRENAS DE CONO DE RODILLO DE ALTA TEMPERATURA.
    6.
    发明专利
    MATERIAL ELASTOMERO PARA BARRENAS DE CONO DE RODILLO DE ALTA TEMPERATURA. 未知

    公开(公告)号：MX2009011203A

    公开(公告)日：2009-11-25

    申请号：MX2009011203

    申请日：2008-04-17

    Applicant: BAKER HUGHES INC

    Inventor： LIN CHIH C ,  KOLTERMANN TERRY ,  DICK AARON

    IPC: E21B10/25

    Abstract: Una barrena de perforación terrestre tiene un cuerpo (13) de barrena con por lo menos un perno (15) de cojinete. Un cono (16) se monta en forma giratoria en el perno (15) de cojinete. Un ensamble (19) sellador se ubica entre el cono (16) y el perno (15) de cojinete, el ensamble (19) sellador tiene por lo menos un miembro (25, 31) sellador flexible. Una presión flexible que compensa en diafragma (17) se monta en el cuerpo (13). El diafragma (17) tiene un lado adaptado para exponerse a los fluidos del pozo de sondeo y otro lado en contacto con el lubricante que se encuentra en los espacios del cojinete entre el cono (16) y el perno (15) de cojinete. El miembro (25, 31) sellador flexible y el diafragma (17) se forman de un elastómero fluorado. El elastómero es ya sea un perfluoroelastómero (FFKM) o un fluoroelastómero (FKM).

    Earth-boring bit with improved bearing seal
    8.
    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.

    Journal bearing for earth-boring bit
    10.
    发明专利
    Journal bearing for earth-boring bit 未知

    公开(公告)号：GB2355747A

    公开(公告)日：2001-05-02

    申请号：GB0026687

    申请日：2000-11-01

    Applicant: BAKER HUGHES INC

    Inventor： SWADI MOHAMMAD ,  KOLTERMANN TERRY ,  BRANNON KENNETH C

    IPC: E21B10/24 ,  E21B10/22

    Abstract: An earth-boring bit having a bit body 12 and bearing shaft 19 comprises a cylindrical journal bearing surface 21 and a cutter 36 locked to the bearing shaft by balls 35 in a bearing channel. A transverse hole 46 is located on the non-loaded side of an axis of the bearing shaft. The hole intersects with a ball plug hole 37 and with the journal bearing surface at a trailing side and a leading side and communicates with both leading and trailing side ports (47 and 49, figure 4). Journal flats on the bearing shaft communicate with the trailing side port and the leading side port. The leading side journal flat is a different size than the trailing side journal flat to enhance circulation of a lubricant from a source 17 via passages 41, 37, and 46, to the journal bearing surface.

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