公开(公告)号：EP2310612A4

公开(公告)日：2011-07-20

申请号：EP09739921

申请日：2009-05-01

Applicant: BAKER HUGHES INC

Inventor： MCCORMICK RONNY ,  PESSIER RUDOLPH C O ,  NGUYEN DON Q ,  MARVEL TIM KING ,  ZAHRADNIK ANTON ,  DAMSCHEN MICHAEL STEVEN ,  CEPEDA KARLOS B ,  ISBELL MATTHEW R

IPC: E21B10/14 ,  E21B7/00 ,  E21B10/24 ,  E21B10/62

CPC classification number: E21B10/14 ,  E21B10/24 ,  E21B10/62 ,  Y10T29/49947 ,  Y10T29/49948 ,  Y10T29/49963

公开(公告)号：WO2009135119A3

公开(公告)日：2010-02-25

申请号：PCT/US2009042514

申请日：2009-05-01

Applicant: BAKER HUGHES INC ,  MCCORMICK RONNY ,  PESSIER RUDOLPH C O ,  NGUYEN DON Q ,  MARVEL TIM KING ,  ZAHRADNIK ANTON ,  DAMSCHEN MICHAEL STEVEN ,  CEPEDA KARLOS B ,  ISBELL MATTHEW R

Inventor： MCCORMICK RONNY ,  PESSIER RUDOLPH C O ,  NGUYEN DON Q ,  MARVEL TIM KING ,  ZAHRADNIK ANTON ,  DAMSCHEN MICHAEL STEVEN ,  CEPEDA KARLOS B ,  ISBELL MATTHEW R

IPC: E21B10/14 ,  E21B7/00 ,  E21B10/62

CPC classification number: E21B10/14 ,  E21B10/24 ,  E21B10/62 ,  Y10T29/49947 ,  Y10T29/49948 ,  Y10T29/49963

Abstract: An earth-boring bit comprising a bit body is configured at its upper end for connection into a drillstring. A fixed blade depends axially downwardly from the bit body. An axially extending slot is formed in the bit body adjacent the fixed blade. A bit leg is received and retained in the slot by engagement between the slot and correspondingly shaped bit leg, wherein the bit leg cannot be removed from the slot except by axial movement relative to the bit body. A rolling cutter is secured to the bit leg at its lower extent. A fastener secures the bit leg against movement relative to the bit body and extends through oblong apertures in the bit leg and into the bit body, wherein the bit leg can be moved axially relative to the bit body to adjust the projection of the rolling cutter relative to the fixed blade. The slot defines a pair of generally opposed sides connected by a third side, the generally opposed sides being inclined toward one another to define a dovetail that corresponds with the shape of the bit leg. The bit body further comprises a shank that is configured for connection into the drillstring at its upper extent and has a generally cylindrical receptacle formed in its lower extent; and a bit body portion having a generally cylindrical upper extent, the receptacle being and dimensioned to receive the upper extent of the bit body, wherein the shank and bit body portions are secured together by welding.

Abstract translation: 包括钻头本体的钻地钻头在其上端构造成用于连接到钻柱中。 固定刀片从钻头体轴向向下悬挂。 在与固定刀片相邻的钻头本体中形成轴向延伸的槽。 通过槽与相应形状的钻头腿之间的接合，将钻头腿接收并保持在槽中，其中，除了通过相对于钻头体的轴向运动，钻头腿不能从槽移除。 滚刀在其下部固定在钻头腿上。 紧固件固定钻头腿以防止相对于钻头体的运动并且延伸穿过钻头腿中的长圆形孔并进入钻头体中，其中钻头腿可以相对于钻头体沿轴向运动以调节轧制刀具相对 到固定刀片。 槽限定了由第三侧连接的一对大致相对的侧面，大致相对的侧面朝向彼此倾斜以限定与钻头腿的形状对应的燕尾榫。 钻头本体还包括构造成在其上部连接到钻柱中并且具有在其下部形成的大致圆柱形的容纳部的柄部; 以及具有大致圆柱形的上部延伸部分的钻头本体部分，所述容纳部的尺寸被设计成接收钻头本体的上部延伸部分，其中柄部和钻头本体部分通过焊接固定在一起。

公开(公告)号：WO2008092130B1

公开(公告)日：2008-10-23

申请号：PCT/US2008052128

申请日：2008-01-25

Applicant: BAKER HUGHES INC ,  MCCLAIN ERIC E ,  GAVIA DAVID ,  SNELL LANE E ,  HOINES JASON E ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

Inventor： MCCLAIN ERIC E ,  GAVIA DAVID ,  SNELL LANE E ,  HOINES JASON E ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

IPC: E21B10/43

CPC classification number: E21B10/55 ,  E21B10/43

Abstract: A rotary drag bit includes a primary cutter row (141) comprising at least one primary cutter, and at least two additional cutters configured relative to one another (19, 20, 21). In one embodiment, the cutters are backup cutters of a cutter group located in respective first and second trailing cutter rows (153), oriented relative to one another, and positioned to substantially follow the at least one primary cutter The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.

Abstract translation: 旋转刮刀钻头包括包括至少一个主切割器的主切割器行（141）和相对于彼此（19,20,21）构造的至少两个另外的切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器排（153）中的切割器组的后备切割器，其相对于彼此定向并且定位成基本跟随至少一个主切割器。旋转拖拉钻头寿命延长 通过备用刀具组使钻头更耐用并且延长刀具的使用寿命。在其他实施例中，刀具被构造成选择性地接合正在钻探的地下地层材料，从而提供改善的钻头寿命并减小刀具上的应力。 旋转刮刀钻头的实施例包括具有不同的后倾角和侧倾角的备用切割器配置，包括其方法。

公开(公告)号：WO2011017394A2

公开(公告)日：2011-02-10

申请号：PCT/US2010044344

申请日：2010-08-04

Applicant: BAKER HUGHES INC ,  GAVIA DAVID ,  FELDERHOFF FLOYD C ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

Inventor： GAVIA DAVID ,  FELDERHOFF FLOYD C ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

IPC: E21B10/42 ,  E21B10/54

CPC classification number: E21B10/43 ,  E21B10/55

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface thereof covered by a portion of the blade. A backup cutter row comprising at least one cutter may also be included, and at least a portion of a cutting surface of at least some cutters in the backup cutter row is covered by a portion of the blade. Enhanced support for cutters is provided against impact loading.

Abstract translation: 旋转牵引钻头包括主切割器行，其包括安装在叶片上的至少一个主切割器，主切割器列中的至少一些切割器具有其切割表面的一部分由叶片的一部分覆盖。 还可以包括包括至少一个切割器的备用切割器排，并且备用切割器行中的至少一些切割器的切割表面的至少一部分被叶片的一部分覆盖。 针对冲击载荷提供了对刀具的增强支撑。

公开(公告)号：WO2011017394A4

公开(公告)日：2011-06-23

申请号：PCT/US2010044344

申请日：2010-08-04

Applicant: BAKER HUGHES INC ,  GAVIA DAVID ,  FELDERHOFF FLOYD C ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

Inventor： GAVIA DAVID ,  FELDERHOFF FLOYD C ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L

IPC: E21B10/42 ,  E21B10/54

CPC classification number: E21B10/43 ,  E21B10/55

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface thereof covered by a portion of the blade. A backup cutter row comprising at least one cutter may also be included, and at least a portion of a cutting surface of at least some cutters in the backup cutter row is covered by a portion of the blade. Enhanced support for cutters is provided against impact loading.

Abstract translation: 旋转刮刀头包括主切割器排，该主切割器排包括安装在刀片上的至少一个主切刀，主切刀行中的至少一些切刀具有由刀片的一部分覆盖的切割表面的一部分。 还可以包括包括至少一个切割器的备用切割器排，并且备用切割器排中的至少一些切割器的切割表面的至少一部分被叶片的一部分覆盖。 针对冲击载荷提供了对切割器的增强支持。

公开(公告)号：WO2008091654A2

公开(公告)日：2008-07-31

申请号：PCT/US2008000914

申请日：2008-01-24

Applicant: BAKER HUGHES INC ,  SNELL LANE E ,  GAVIA DAVID ,  HOINES JASON E ,  HANFORD RYAN J ,  ISBELL MATTHEW R ,  MCCLAIN ERIC E ,  DOSTER MICHAEL L

Inventor： SNELL LANE E ,  GAVIA DAVID ,  HOINES JASON E ,  HANFORD RYAN J ,  ISBELL MATTHEW R ,  MCCLAIN ERIC E ,  DOSTER MICHAEL L

IPC: E21B10/43

CPC classification number: E21B10/55 ,  E21B10/43

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter group, making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

Abstract translation: 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多支撑刀具组延长，使钻头更耐用，延长刀具寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，提供改善的钻头寿命并减小切割器上的应力。 提供旋转阻力钻头的其他实施例。

公开(公告)号：ITTO20020945A1

公开(公告)日：2003-05-02

申请号：ITTO20020945

申请日：2002-11-04

Applicant: BAKER HUGHES INC

Inventor： BAKER BRIAN A ,  ISBELL MATTHEW R ,  VAN KLOMPENBURG GREG

IPC: E21B20060101 ,  E21B10/16

公开(公告)号：ITTO20001113A1

公开(公告)日：2002-05-29

申请号：ITTO20001113

申请日：2000-11-29

Applicant: BAKER HUGHES INC

Inventor： VOLKER RICHERT ,  VAN JORDAN BRACKIN ,  ISBELL MATTHEW R ,  BOBROSKY DOUGLAS J

IPC: E21B10/46 ,  E21B10/54 ,  E21B10/55 ,  E21B10/56 ,  E21B10/60

Abstract: A drill bit employing a plurality of discrete, post-like diamond grit impregnated cutting structures extending upwardly from abrasive particulate-impregnated blades defining a plurality of fluid passages therebetween on the bit face. PDC cutters with faces oriented in the general direction of bit rotation are placed in the cone of the bit, which is relatively shallow, to promote enhanced drilling efficiency through softer, non-abrasive formations. A plurality of ports, configured to receive nozzles therein are employed for improved drilling fluid flow and distribution. The blades may extend radially in a linear fashion, or be curved and spiral outwardly to the gage to provide increased blade length and enhanced cutting structure redundancy.

公开(公告)号：CA2675070C

公开(公告)日：2012-05-29

申请号：CA2675070

申请日：2008-01-24

Applicant: BAKER HUGHES INC

Inventor： SNELL LANE E ,  GAVIA DAVID ,  HOINES JASON E ,  HANFORD RYAN J ,  ISBELL MATTHEW R ,  MCCLAIN ERIC E ,  DOSTER MICHAEL L

IPC: E21B10/43

Abstract: A rotary drag bit (110) includes a primary cutter row (143) comprising at least one primary" cutter (11) and a multiple backup cutter, group (153). The multiple backup cutter group comprises a first and second trailing cutter row (154, 155), each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter group, making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

公开(公告)号：ITTO20010987A1

公开(公告)日：2003-04-17

申请号：ITTO20010987

申请日：2001-10-17

Applicant: BAKER HUGHES INC

Inventor： PESSIER RUDOLF C O ,  DYKSTRA MARK W ,  ISBELL MATTHEW R ,  DOSTER MICHAEL L ,  HEUSER WILLIAM H

IPC: E21B10/42 ,  E21B10/43 ,  E21B10/56 ,  E21B10/567 ,  E21B10/60

Abstract: A cutting assembly comprised of first and second superabrasive cutting elements including at least one rotationally leading cutting element having a cutting face oriented generally in a direction of intended rotation of a bit on which the assembly is mounted to cut a subterranean formation with a cutting edge at an outer periphery of the cutting face, and a rotationally trailing cutting element oriented substantially transverse to the direction of intended bit rotation and including a relatively thick superabrasive table configured to cut the formation with a cutting edge located between a beveled surface at the side of the superabrasive table and an end face thereof. A rotationally trailing cutting element may be associated with and disposed at a location on the bit at least partially laterally intermediate locations of two rotationally leading cutting elements. Drill bits equipped with the cutting assembly are also disclosed.