公开(公告)号：WO2014078225A4

公开(公告)日：2014-12-24

申请号：PCT/US2013069394

申请日：2013-11-11

Applicant: NAT OILWELL DHT LP ,  VO THANG ,  SUKENDRO TJANDRA

Inventor： VO THANG ,  SUKENDRO TJANDRA

IPC: E21B10/16 ,  E21B10/52

CPC classification number: E21B10/16 ,  B24D3/06 ,  E21B10/52

Abstract: A rolling cone drill bit for drilling a borehole in earthen formations includes a bit body having a bit axis. In addition, the rolling cone drill bit includes a rolling cone cutter mounted on the bit body and having a cone axis of rotation. The cone cutter includes a cone body, a plurality of teeth arranged in a first inner row, and a plurality of inserts. Each insert is disposed within one tooth in the first inner row.

Abstract translation: 一种用于在土层中钻孔的滚动钻头钻头包括具有钻头轴线的钻头体。 此外，滚动锥钻头包括安装在钻头体上并具有锥形旋转轴线的滚动圆锥切割机。 锥形切割器包括锥体，布置在第一内排中的多个齿和多个插入件。 每个插入件设置在第一内排中的一个齿内。

公开(公告)号：WO2013138034A3

公开(公告)日：2014-05-22

申请号：PCT/US2013026926

申请日：2013-02-20

Applicant: NAT OILWELL DHT LP

Inventor： CLARK KEVIN ,  TUTT JOSHUA

IPC: E21B47/00

CPC classification number: E21B47/06 ,  E21B12/00 ,  E21B17/16 ,  E21B47/0006 ,  E21B47/01

Abstract: A downhole measurement assembly, tool, and method is provided. The downhole measurement assembly includes at least one drill collar 220 having at least one compensation portion and at least one force portion with a load path 239 therethrough. The compensation portion has a different dimension from the force portion. The assembly also includes a plurality of compensation sensors 230.1, 230.2 positionable about the compensation portion to measure downhole tool pressures applied thereto, and a plurality of force sensors 230.3, 230.4 positionable about the force portion to measure downhole forces applied thereto. The compensation sensors and the force sensors are positionable about the drill collar(s) 220 in a strain configuration along the load path 239 whereby the measured downhole tool pressure is isolatable from the measured downhole forces on the drill collar(s).

Abstract translation: 提供井下测量组件，工具和方法。 井下测量组件包括至少一个钻铤220，其具有至少一个补偿部分和至少一个力部分，其中穿过其中的负载路径239。 补偿部分具有与力部分不同的尺寸。 组件还包括多个补偿传感器230.1,230.2，其可以围绕补偿部分定位以测量施加到其上的井下工具压力;以及多个力传感器230.3,230.4，其可围绕力部分定位以测量施加到其上的井下力。 补偿传感器和力传感器可沿着负载路径239在应变构造中围绕钻铤220定位，由此所测量的井下工具压力与钻铤上的测量井下力隔离。

公开(公告)号：WO2007030262A3

公开(公告)日：2007-06-14

申请号：PCT/US2006031376

申请日：2006-08-11

Applicant: NAT OILWELL DHT LP ,  STREATER JAMES R JR ,  BOSLEY GREGG A ,  ROSS DAVID P ,  ISAACKS STEVEN C

Inventor： STREATER JAMES R JR ,  BOSLEY GREGG A ,  ROSS DAVID P ,  ISAACKS STEVEN C

IPC: E21B31/00

CPC classification number: E21B31/18

Abstract: Disclosed is an improved spear head overshot. The spear head overshot is particularly useful as part of a cable-guided fishing assembly. The spear head overshot essentially comprises one or more pivot lugs, the pivot lugs comprising jaw sections and release point sections, an actuator slide, a wave spring, a pivot mandrel, a screw attached to the pivot mandrel, and a compression spring threaded over the screw. In operation, a spear head is inserted into the spear head overshot until the spear head passes the jaw sections of the pivot lugs, at which time the spear head is locked into place. To release the spear head, the release point sections of the pivot lugs are manually forced inward. Simultaneously, the jaw sections of the pivot lugs are forced outward, thereby allowing the spear head to be removed from the spear head overshot. In a cable-guided fishing operation, this process can be repeated as often as necessary.

Abstract translation: 公开了改进的矛头抓拍。 矛头抓拍作为电缆引导的钓鱼组件的一部分特别有用。 矛头过冲基本上包括一个或多个枢转凸耳，枢转凸耳包括爪部分和释放点部分，致动器滑块，波形弹簧，枢轴心轴，附接到枢轴心轴的螺钉以及压在螺钉上的压缩弹簧 拧。 在操作中，将矛头插入矛头中，直到矛头通过枢轴突耳的爪部分，此时矛头锁定到位。 为了释放矛头，枢轴突耳的释放点部分被手动强制向内。 同时，枢轴凸耳的卡爪部分被迫向外，由此允许将矛头从矛头上去除。 在电缆引导的捕捞作业中，可以根据需要重复该过程。

公开(公告)号：WO2007024372A2

公开(公告)日：2007-03-01

申请号：PCT/US2006028087

申请日：2006-07-20

Applicant: NAT OILWELL DHT LP ,  ISAACKS C STEVEN ,  HIEBELER HARRY P ,  CORDOVA NOE TONY ,  LIVINGSTON JIMMY G ,  GILLEYLEN RUSSELL C ,  GHANSYAM HARESH

Inventor： ISAACKS C STEVEN ,  HIEBELER HARRY P ,  CORDOVA NOE TONY ,  LIVINGSTON JIMMY G ,  GILLEYLEN RUSSELL C ,  GHANSYAM HARESH

IPC: E21B33/12

CPC classification number: E21B33/062 ,  E21B19/24

Abstract: An improved ram inner seal assembly used in ram-type BOPs is disclosed. The disclosed invention provides an inner guide seal assembly that comprises a specially shaped guide body and a separate sealing element. When the ram-type BOP is closed, two opposing rams move toward one another, and the inner guide seal assembly guides a wireline (or other tubular) toward the center of the vertical bore through the BOP. The inner guide seal assembly's proximity to the ram body's centerline axis helps ensure that a positive seal is formed and that no damage occurs to the device in the central bore of the BOP. The separate, specially-shaped sealing element can be easily inserted into and removed from the guide body of the inner guide seal assembly for easy replacement.

公开(公告)号：WO2014052372A3

公开(公告)日：2014-11-27

申请号：PCT/US2013061556

申请日：2013-09-25

Applicant: NAT OILWELL DHT LP ,  WRIGHT CHARLES LEONARD II ,  SRESHTA HAROLD A ,  SUE JIINJEN ALBERT

Inventor： WRIGHT CHARLES LEONARD II ,  SRESHTA HAROLD A ,  SUE JIINJEN ALBERT

IPC: E21B10/43 ,  C04B35/80 ,  E21B10/00 ,  E21B10/46 ,  E21B10/55 ,  E21B29/06

CPC classification number: E21B10/46 ,  C04B35/117 ,  C04B35/488 ,  C04B35/803 ,  C04B2235/5244 ,  C04B2235/5276 ,  E21B10/006 ,  E21B10/43 ,  E21B10/55 ,  E21B29/06

Abstract: A drill bit (10) for cutting through a downhole metal structure includes a bit body (12) having a central axis (11) and a bit face (20). The bit body is configured to rotate about the central axis in a cutting direction. In addition, the bit includes a cutting structure (15) disposed on the bit face. The cutting structure includes a plurality of circumferentially spaced blades (16) and a plurality of primary cutter elements (40) mounted to each blade. Each primary cutter element has a forward- facing primary cutting face (44). Each primary cutter element is made of a whisker ceramic composite.

Abstract translation: 用于切割井下金属结构的钻头（10）包括具有中心轴线（11）和钻头面（20）的钻头体（12）。 钻头体被构造成围绕切割方向的中心轴线旋转。 此外，钻头包括设置在钻头面上的切割结构（15）。 切割结构包括多个周向间隔开的叶片（16）和安装到每个叶片的多个主切割器元件（40）。 每个主切割元件具有向前的主切割面（44）。 每个主切割元件由晶须陶瓷复合材料制成。

公开(公告)号：WO2014081997A2

公开(公告)日：2014-05-30

申请号：PCT/US2013071383

申请日：2013-11-22

Applicant: NAT OILWELL DHT LP ,  VO THANG ,  SUKENDRO TJANDRA

Inventor： VO THANG ,  SUKENDRO TJANDRA

IPC: E21B10/52 ,  E21B10/56

CPC classification number: E21B10/16 ,  B24D18/0009 ,  E21B10/52 ,  E21B10/56

Abstract: An insert for a rolling cone drill bit includes a base portion having a central axis. The base portion is configured to be seated in a mating socket in a cone cutter of the rolling cone drill bit. In addition, the insert includes a cutting portion extending from the base portion. The base portion has a radially outer surface including a non-cylindrical axial retention feature configured to prevent the insert from moving axially out of the mating socket or a non-cylindrical torque holding feature configured to prevent the insert from rotating relative to the cone cutter.

Abstract translation: 用于滚动锥钻头的刀片包括具有中心轴线的基部。 基座部分被配置成坐在滚动锥钻头的锥形切割器中的配合插座中。 此外，插入件包括从基部延伸的切割部。 基部具有包括非圆柱形轴向保持特征的径向外表面，该非圆柱形轴向保持特征构造成防止插入件轴向移动离开配合插座，或者非圆柱形扭矩保持特征构造成防止插入件相对于锥形切割器旋转。

公开(公告)号：WO2013006252A3

公开(公告)日：2013-09-26

申请号：PCT/US2012042656

申请日：2012-06-15

Applicant: NAT OILWELL DHT LP ,  EPPERSON BRANDON CHARLES ,  GROSZ GREGORY CHRISTOPHER ,  MCVEA ALISON PAIGE

Inventor： EPPERSON BRANDON CHARLES ,  GROSZ GREGORY CHRISTOPHER ,  MCVEA ALISON PAIGE

IPC: E21B47/01 ,  E21B23/01

CPC classification number: E21B47/01 ,  E21B23/01 ,  Y10T29/49826

Abstract: Apparatus including a sensor- containing body (12) is disposable within a flowbore (22) of a downhole tool. The apparatus also comprises an adjustable engagement mechanism that is coupled to the body. The engagement mechanism has a first position that allows the body to move longitudinally through the flowbore, and a second position that prevents movement of the body relative to the flowbore.

Abstract translation: 包括含传感器的主体（12）的装置可以在井下工具的一个钻孔（22）内被放置。 该装置还包括联接到主体的可调接合机构。 接合机构具有允许主体纵向移动通过钻孔的第一位置，以及防止主体相对于流孔移动的第二位置。

公开(公告)号：WO2012056196A2

公开(公告)日：2012-05-03

申请号：PCT/GB2011001531

申请日：2011-10-25

Applicant: NAT OILWELL DHT LP ,  SETLUR DEEPTHI RAJ ,  HUGHES MICHAEL D ,  FRANCIS MARK JONATHAN ,  SRESHTA HAROLD A ,  ZHAN GUODONG ,  GILLEYLEN RUSSELL C ,  SUE JIINJEN ALBERT

Inventor： SETLUR DEEPTHI RAJ ,  HUGHES MICHAEL D ,  FRANCIS MARK JONATHAN ,  SRESHTA HAROLD A ,  ZHAN GUODONG ,  GILLEYLEN RUSSELL C ,  SUE JIINJEN ALBERT

CPC classification number: E21B10/567 ,  B22F3/105 ,  B22F3/16 ,  B22F7/02 ,  B24D18/0009 ,  C22C19/07 ,  E21B10/573 ,  Y10T428/12174 ,  Y10T428/12576

Abstract: A polycrystalline-diamond cutting clement (50) is disclosed for a drill bit of a downhole tool. The cutting element (50) includes a substrate (24) and a diamond table bonded to the substrate (24). The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment (54) packed therein along at least one working surface thereof. The cutting element (50) may be formed by positioning the diamond table on the substrate (24) and bonding the diamond table onto the substrate (24) such that the polycrystalline diamond segment (54) is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate (24).

Abstract translation: 公开了用于井下工具的钻头的多晶金刚石切割件（50）。 切割元件（50）包括基底（24）和结合到基底（24）的金刚石台。 钻石台包括金刚石填料，其中沿着至少一个工作表面填充有至少一个浸出的多晶金刚石区段（54）。 切割元件（50）可以通过将金刚石台定位在基底（24）上并将金刚石台结合到基底（24）上而形成，使得多晶金刚石片段（54）沿着至少一个工作表面 钻石桌。 可以使用火花等离子体烧结或双压操作将金刚石台结合到基底（24）上。

公开(公告)号：WO2007030271A3

公开(公告)日：2009-04-16

申请号：PCT/US2006031484

申请日：2006-08-10

Applicant: NAT OILWELL DHT LP ,  BOSLEY GREGG A ,  SOMAN ADITYA V ,  ROSS DAVID P ,  STREATER JAMES R

Inventor： BOSLEY GREGG A ,  SOMAN ADITYA V ,  ROSS DAVID P ,  STREATER JAMES R

IPC: F16C11/00

CPC classification number: E21B31/14 ,  Y10T29/49648 ,  Y10T403/32213 ,  Y10T403/32737

Abstract: Disclosed is an improved swivel joint for use as part of a cable-guided fishing assembly. The swivel joint contains a bearing assembly comprising a series of ball bearings partially encased by an inner and outer race. During a cable-guided fishing operation, the inner and outer race exert a shearing, rather than compression, force on the ball bearing due to the unique configuration of the bearing assembly. This unique configuration increases the strength of the bearing assembly, and the corresponding strength of the swivel joint, without necessitating an increase in the outer diameter of the swivel joint.

Abstract translation: 公开了一种改进的旋转接头，用作电缆引导式钓鱼组件的一部分。 旋转接头包含轴承组件，该轴承组件包括由内外圈部分包围的一系列球轴承。 在电缆引导式钓鱼操作期间，由于轴承组件的独特结构，内外圈在滚珠轴承上施加剪切而不是压缩力。 这种独特的构造增加了轴承组件的强度和相应的旋转接头的强度，而不需要增加旋转接头的外径。

公开(公告)号：WO2017053282A3

公开(公告)日：2017-05-04

申请号：PCT/US2016052646

申请日：2016-09-20

Applicant: NAT OILWELL DHT LP

Inventor： WANG YING ,  SUE JIINJEN ALBERT

IPC: E21B10/00 ,  B23K35/32 ,  C22C29/06 ,  C23C4/06 ,  E21B10/46

CPC classification number: E21B41/00 ,  B23K10/027 ,  B23K26/0006 ,  B23K26/34 ,  B23K35/327 ,  B23K2203/05 ,  B23K2203/16 ,  B23K2203/52 ,  C22C19/07 ,  C22C29/06 ,  C22C32/0052 ,  C22C32/0073 ,  C22C33/0292 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/32 ,  C22C38/40 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C23C4/01 ,  C23C4/06 ,  C23C4/10 ,  C23C4/129 ,  C23C4/131 ,  C23C4/134 ,  C23C24/10 ,  C23C24/103 ,  E21B10/46

Abstract: A hardfacing (301) disposable on a surface of a component (306), such as a wellsite component, is disclosed. The hardfacing includes a surface portion and a bottom portion with a segregation line (428) defined therebetween. The surface portion and the bottom portion each include a matrix phase (434) including a matrix composition made of a metal alloy and a hard phase (436) distributed in the matrix phase. The hard phase may include an abrasion-resistant composition made of a hard material (e.g., vanadium carbide). The surface portion (426a) has a first concentration of the abrasion- resistant composition and the bottom portion (426b) has a second concentration of the abrasion-resistant composition with the first concentration being greater than the second concentration such that a wear resistant surface is defined on the surface of the component.

Abstract translation: 公开了一种可弃置在部件（306）的表面上的硬面（301），例如井场部件。 表面硬化部分包括表面部分和底部部分，其间限定有隔离线（428）。 表面部分和底部分别包括基体相（434），基体相（434）包括由金属合金制成的基体组合物和分布在基体相中的硬质相（436）。 硬相可以包括由硬质材料（例如碳化钒）制成的耐磨组合物。 表面部分（426a）具有第一浓度的耐磨组合物，并且底部（426b）具有第二浓度的耐磨组合物，其中第一浓度大于第二浓度，使得耐磨表面是 定义在组件的表面上。