CN103443388A - 用于将腿部保持在混合式钻头上的系统和方法 - Google Patents

用于将腿部保持在混合式钻头上的系统和方法 Download PDF

Info

Publication number
CN103443388A
CN103443388A CN2012800133619A CN201280013361A CN103443388A CN 103443388 A CN103443388 A CN 103443388A CN 2012800133619 A CN2012800133619 A CN 2012800133619A CN 201280013361 A CN201280013361 A CN 201280013361A CN 103443388 A CN103443388 A CN 103443388A
Authority
CN
China
Prior art keywords
shank
sidewall
chock
slit
drill bit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012800133619A
Other languages
English (en)
Other versions
CN103443388B (zh
Inventor
G·L·里克斯
F·C·费尔德霍夫
R·C·佩斯西尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of CN103443388A publication Critical patent/CN103443388A/zh
Application granted granted Critical
Publication of CN103443388B publication Critical patent/CN103443388B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/14—Roller bits combined with non-rolling cutters other than of leading-portion type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

Abstract

一种钻土机钻头，包括：一条或多条腿部；钻头体，具有刀片和用于容纳腿部的狭槽；一个或多个楔子，位于所述腿部和所述狭槽之间并将腿部固定在狭槽内。狭槽可具有两个平行的侧壁，其中一个侧壁形成锐角，而另一个侧壁形成钝角。楔子可紧挨着成钝角的侧壁被固定。楔子可具有两条成钝角的侧壁，一个或多个穿过各个楔子的螺栓可以将楔子和腿部二者紧固到钻头体。在一个优选的实施例中，楔子的成钝的角侧壁优选地紧挨着腿部的成锐角的侧壁而被固定。

Description

用于将腿部保持在混合式钻头上的系统和方法
相关申请案的交叉引用
本申请要求享有2008年5月2日提交的题为“用于将腿部保持在混合式钻头上的系统和方法”的美国申请案序列第12/114537号的优先权，其全部内容将以具体引用的方式并入本文。
联邦政府资助的研究或开发的声明
不适用
参考附录
不适用
技术领域
本发明总体上涉及钻土钻头，尤其涉及一种具有牙轮刀具和固定刀具和切削元件的组合体的钻头、以及一种用所述钻头钻孔的方法。
背景技术
美国专利第3,294,186号公开了用于牙轮钻头部件的钎焊的镍垫片的应用。
美国专利第3,907,191号公开了如下内容：“一种旋转式牙轮钻头是由许多单独的部分构成。每个单独的部分包括两个分离面和保径（gage）切削表面。各单独的部分被定位成彼此相邻，且相邻部分的分离面处于彼此邻接的关系。一环规定位在各部分的周围，且各单独的部分相对于彼此运动，从而使单独的部分的分离面紧贴着相邻的部分的分离面滑动。使所述部分运动直到各部分的保径切削表面接触环规，从而保证制成的钻头具有所需的保径尺寸。各部分在绝大部分分离面上焊接到一起”。
美国专利第5,439,067号公开了如下内容：“一种用于形成钻孔的旋转式锥形钻头，其具有一体式钻头体，该钻头体包括具有凸外表面的下部部分和适用于连接至钻柱的上部部分。若干个支撑臂优选地附接到钻头体并从钻头体悬垂。每个支撑臂均具有内表面和外表面，心轴连接至内表面。每个心轴均相对于相关联的支撑臂大体上向下并向内突伸。与支撑臂数量相等的若干个锥形刀具组件安装在各个心轴上。支撑臂在钻头体的外部上间隔开，以便在钻头体的下部部分和支撑臂之间提供增强的流体流动。另外，对支撑臂的长度进行选择，以便在相关联的锥形刀具组件和钻头体的下部之间提供增强的流体流动。同一的钻头体可以与各种具有不同保径直径的旋转式锥形钻头一起使用”。
美国专利第5,439,068号公开了如下内容：“一种用于形成钻孔的旋转式锥形钻头，其具有一体式钻头体，该钻头体包括具有凸外表面的下部部分和适用于连接至钻柱的上部部分。钻头将通常绕钻头体的中心轴线旋转。若干个支撑臂优选地附接到钻头体中形成的凹穴并从该凹穴处悬垂。每个支撑臂均具有内表面和外表面，心轴连接至内表面。每个心轴均相对于相关联的支撑臂的纵向轴线及钻头体的中心轴线大体上向下并向内突伸。与支撑臂数量相等的若干个锥形刀具组件分别安装在各个心轴上。对各个支撑臂之间的间距及其各自的长度和宽度尺寸进行选择，以便增强安装在各相应支撑臂上的锥形刀具组件和钻头体的下部部分之间的流体流动。在各个支撑臂中优选设置有润滑剂储存器，以便为一个或更多个设置在各个锥形刀具组件及其相关联的心轴之间的支承组件提供润滑剂。可采用相匹配的开口和柱或相匹配的键槽和键在最终制成的钻头的制造期间将各个支撑臂的一部分定位并对齐在相关联的凹穴内”。
美国专利第5,595,255号公开了如下内容：“一种用于形成钻孔的旋转式锥形钻头，其具有钻头体，该钻头体具有适用于连接至钻柱的上端部。钻头绕钻头体的中心轴线旋转。从钻头体优选地延伸出若干个支撑臂。支撑臂可以形成为钻头的整体式部分或者在凹穴中附接到钻头体的外部，该凹穴的的尺寸适合容纳相关的支撑臂。每个支撑臂均具有带有内表面的下部部分和牙爪尖外表面，心轴连接至内表面。每个心轴均相对于其相关的支撑臂大体上向下并向内突伸。与支撑臂数量相等的若干个锥形刀具组件分别安装在心轴上。在与相关的心轴邻近的各个支撑臂的下部部分上设置有喉式起伏区，以便增加支撑臂和相应锥形刀具组件之间的流体流动”。
美国专利第5,606,895号公开了如下内容：“一种旋转式锥形钻头，其具有一体式钻头体，该钻头体包括具有凸外表面的下部部分和适用于连接至钻柱的上部部分。钻头将通常绕钻头体的中心轴线旋转以形成钻孔。若干个支撑臂优选地附接到在钻头体内形成的凹穴并从凹穴处悬垂。钻头体和支撑臂相互配合，以减少初始制造成本并允许磨损钻头的修复。每个支撑臂均具有内表面和牙爪尖外表面，心轴连接至内表面。每个心轴均相对于相关的支撑臂的纵向轴线及钻头体的中心轴线大体上向下并向内突伸。与支撑臂数量相等的若干个锥形刀具组件分别安装在各个心轴上。对相关的钻头体周边上的支撑体的径向间距以及其各自的长度及宽度尺寸进行选择，以便增强安装在相应的支撑臂上的锥形刀具组件和钻头体的下部部分之间的流体流动。最终制成的钻头提供了增强的流体流动、增加的密封度和支承寿命，并且提高了井下性能以及生产和设计工序的标准化程度”。
美国专利第5,624,002号公开了如下内容：“一种旋转式锥形钻头，其具有一体式钻头体，该钻头体包括具有凸外表面的下部部分和适用于连接至钻柱的上部部分。钻头将通常绕钻头体的中心轴线旋转以形成钻孔。若干个支撑臂优选地附接到在钻头体中形成的凹穴并从凹穴处悬垂。钻头体和支撑臂相互配合，以减少初始制造成本并允许磨损钻头的修复。每个支撑臂均具有内表面和牙爪尖外表面，心轴连接至内表面。每个心轴均相对于相关的支撑臂的纵向轴线及钻头体的中心轴线大体上向下并向内突伸。与支撑臂数量相等的若干个锥形刀具组件分别安装在各个心轴上。对相关的钻头体的周边上的支撑体的径向间距以及其各自的长度及宽度尺寸进行选择，以便提高安装在相应的支撑体上的锥形刀具组件和钻头体的下部分之间的流体流动。最终制成的钻头提供了增强的流体流动、增加的密封度和支承寿命，提高了井下性能以及生产和设计工序的标准化程度”。
美国设计专利第D372,253号示出了一种用于模块化钻头的支撑臂和旋转锥。
本文所揭露并教导的这些发明是针对具有牙轮刀具和固定刀具及切削元件的组合体的改进型混合式钻头。
发明内容
本文所披露并教导的这些发明是针对一种钻土钻头，其包括：一条或更多条腿部；钻头体，所述钻头体具有刮刀和用于容纳所述腿部的狭槽；以及一个或更多个楔子，所述楔子位于所述腿部和所述狭槽之间以将所述腿部固定在所述狭槽中。所述狭槽可具有两个平行的侧壁，其中一个侧壁形成锐角而另一个侧壁形成钝角。所述楔子可以紧挨着成钝角的侧壁而被固定。所述楔子可具有两个成钝角的侧壁。所述钻头可包括一个或更多个穿过各个楔子的螺栓，所述螺栓将所述楔子和所述腿部二者固定到所述钻头体。在替代实施例中，所述狭槽可以具有两个彼此不平行的侧壁，例如所述侧壁中的第一个侧壁从所述钻头体的轴向中心大致正直地向外延伸。在这种情况下，所述楔子优选紧挨着所述第一个侧壁固定。然而，在大多数情况下，所述楔子的成钝角的侧壁优选紧挨着腿部的成锐角的那一侧壁而被固定。
附图说明
图1是混合式钻土钻头的实施例的底部平面图；
图2是图1的混合式钻土钻头的实施例的侧视图；
图3是依照本发明构造的图1的混合式钻土钻头的另一实施例的分解图；
图4是图1的混合式钻土钻头的合成的旋转侧视图；
图5是依照本发明构造的图1的混合式钻土钻头的简化侧视图；
图6是依照本发明构造的图1的混合式钻土钻头的简化截面平面图；
图7是图6的分解图；以及
图8是依照本发明构造的图1的混合式钻土钻头的简化的截面正视图。
具体实施方式
上述附图以及下面对特定结构和功能的书面说明并不用于限制申请人已发明的范围或所附权利要求的范围。相反，附图和书面说明用于教导本领域技术人员制造和使用所要求专利保护的本发明。本领域技术人员应了解，为了清楚和理解的目的，并没有介绍或显示本发明商业实施例的所有特征。本领域技术人员还应了解，包含本发明多个方面的实际商业实施例的开发将需要大量的在实施上特定的决定，以便实现开发者的用于商业实施例的最终目标。这些在实施上特定的决定包括但可能不限于与相关系统、相关商业、相关政府以及其它限制条件相符，这些可以根据特定实施、位置并随时间而变化。尽管开发者的努力可能在绝对意义上是复杂且耗时的，但是这些努力将是受益于本发明的本领域普通技术人员进行的常规工作。应理解，本文公开和教导的本发明可以有大量不同的变化和替代形式。最后，使用的单数形式，例如但不限于“一”，并不意在限制项目的数量。另外，在书面说明中使用的关系术语，例如但不限于“顶部”、“底部”、“左”、“右”、“上部”、“下部”、“下”、“上”、“侧”等，用于清楚地具体参照附图时，并不意在限制本发明或所附权利要求的范围。
申请人已经创造了一种钻土钻头，其包括：一条或更多条腿部；钻头体，所述钻头体具有刮刀和用于容纳所述腿部的狭槽；以及一个或更多个楔子，所述楔子位于所述腿部和所述狭槽之间以将所述腿部固定在所述狭槽中。所述狭槽可具有两个平行的侧壁，其中一个侧壁形成锐角而另一个侧壁形成钝角。所述楔子可以紧挨着成钝角的侧壁而被固定。所述楔子具有两个成钝角的侧壁。所述钻头可包括一个或更多个穿过各个楔子的螺栓，所述螺栓将所述楔子和所述腿部二者固定到所述钻头体。在替代实施例中，所述狭槽可以具有两个彼此不平行的侧壁，例如所述侧壁中的第一个侧壁从所述钻头体的轴向中心大致正直地向外延伸。在这种情况下，所述楔子优选紧挨着所述第一个侧壁固定。然而，在大多数情况下，所述楔子的成钝角的侧面优选紧挨着腿部的成锐角的那一侧侧壁而被固定。
参照图1和图2，其公开了一种模块化混合式钻土钻头的说明性实施例。钻头11可类似于美国专利申请公开文件第20090272582号和/或第20080296068号中所示的钻头，这两篇文献均以引用的方式并入本文。钻头11包括具有纵向轴线15的钻头体13，该纵向轴线限定出钻头体13的轴向中心。多个（例如，如图所示的两个）钻头腿部或头部17从钻头体13沿轴向延伸，并且平行于纵向轴线15。因为腿部17固定在钻头体13周围，腿部也可以从钻头体13径向突出。钻头体13还具有多个在轴向上延伸的固定刮刀19.
牙轮刀具21安装在相应的钻头腿部17上。每个牙轮刀具21均成形和定位成使得牙轮刀具21的每个表面均与轴向中心15在径向上间隔开最小的径向距离23。多个牙轮刀具切削插入件或切削元件25安装至牙轮刀具21并与轴向中心15在径向上间隔开最小的径向距离27。最小的径向距离23、27可以根据应用而改变，并且可以因刀具和/或切削元件的不同而不同。
此外，多个固定切削元件31安装到固定刮刀19上。至少一个固定切削元件31可位于钻头体13的轴向中心15处并且适于在轴向中心处切削地层。在一个实施例中，至少一个固定切削元件31位于离轴向中心约0.040英寸的范围内。牙轮刀具切削元件25和固定切削元件31的示例包括碳化钨插入件、由超硬材料（例如多晶金刚石）制成的刀具、以及本领域技术人员熟知的其它刀具。
图3图解说明了钻头11的模块化方面。图3是被拆卸的钻头111的各部分的分解图。图3的说明性实施例是一种三刀具三刮刀式钻头。本发明的模块化结构原理同样适用于图1和图2所示的两刀具两刮刀式钻头11以及具有固定刮刀和牙轮刀具的任意组合的混合式钻头。
如图所示，钻头111包括接头部分或接头段113，该接头部分或接头段在其上部范围配置有螺纹或其它结构以便连接到钻柱中。在接头部分113的下部范围形成有大体上呈圆筒形的接收部115。该接收部容纳位于钻头体部分119的上部范围的具有相应的形状和尺寸的圆柱形部分117。通过将钻头体部分119的上部范围的圆柱形部分117插入到接头部分113的下部范围中的圆筒形接收部115内，而将接头部分113和钻头体部分119连接在一起。对于图示的十二又四分之一英寸的钻头，接收部是2级（Class2）的阴螺纹，该阴螺纹与位于钻头体的上部范围的相匹配的阳螺纹接合。然后圆形接缝或接合部连续地被堆焊，以使两个部分或两个段固定在一起。接收部115及上部范围117不必为圆柱形，而可以是匹配在一起的其它形状，或者可以是依赖焊接以便增加强度的滑动或转动配合。作为替代，接合部可通过上部范围119和接收部115之间的紧密过盈配合而强化。围绕接缝也可使用点焊和/或全焊。
钻头腿部或头部17、121（图中所示有三个）容纳在轴向延伸的狭槽中123中（同样，为每个腿部或头部121均布置有一狭槽123）。狭槽123可以是鸠尾榫式的（腿部121的形状与之相对应），使得腿部121仅能轴向滑动且防止了腿部121从狭槽123径向移出。多个（四个）螺栓127和垫圈将各条腿部121固定在狭槽123内，使得腿部121被固定而不会轴向地移入和移出狭槽123。牙轮刀具125通过滚珠式锁止密封组件129固定在与各腿部121相联的支承件上。腿部121中的孔口（螺栓127延伸穿过该孔口）可以是椭圆形的和/或具有超大尺寸，以允许腿部121在狭槽123内轴向和/或径向定位，这又允许能对各个牙轮刀具上的切削元件的相对突出的部分进行选择。各腿部121中还承载有润滑剂补偿器组件131，该润滑剂补偿器组件在钻孔操作期间为支承组件提供润滑剂并补偿润滑剂中的压力变化。至少一个喷嘴133被容纳并保持在钻头体部分119中，以将钻孔流体流从钻头111的内部引导到靠近钻头的刀具和刀片的选定位置。
狭槽123优选地具有一对相邻的相对的侧面135、135a、135b（见图6）。如在下面将进一步详细论述，侧面135可以是倾斜的。可以是曲面或平面的第三侧面137（见图6）连接两个相对的侧面135。钻头体13、119中形成有螺纹盲孔或螺纹盲口139（见图6）以容纳各个紧固件或螺栓127.
如图4所示，牙轮切削元件25和固定切削元件31组合在一起限定出切削型面41，所述切削型面从轴向中心15延伸至相对于轴线的径向最外侧周缘43。在一个实施例中，仅固定切削元件31在轴向中心15和径向最外侧周缘43形成切削型面41。然而，牙轮切削元件25与位于轴向中心15和径向最外侧周缘43之间的切削型面41上的固定切削元件31重叠。牙轮切削元件25被配置成在切削型面41的鼻部45和肩部47进行切削，其中鼻部45为切削型面的面向钻孔壁并且与径向最外侧周缘43相邻定位的引导部分（即，位于轴向中心15和肩部47之间）。
因此，牙轮切削元件25和固定切削元件31组合在一起以在鼻部45和肩部47中限定出共同的切削面51（见图2），鼻部45和肩部47已知是固定刀具钻头型面中最脆弱的部分。切削面51位于混合式钻头11的轴向上的远端。在一个实施例中，各个牙轮切削元件25和各个固定切削元件31中的至少一个在切削面51沿轴向延伸大致相等的尺寸。在一个实施例中，虽然牙轮切削元件25和固定切削元件31在轴向上对齐，但它们在径向上彼此偏置。然而，最远端的牙轮切削元件25、固定切削元件31之间的轴向对齐不需要使得所述牙轮切削元件25、固定切削元件31处于其最远端位置时在轴向上间隔开很大的距离。例如，牙轮切削元件25或固定切削元件31可以延伸超过切削面51，或者也可以不完全延伸到该切削面。换言之，牙轮切削元件25可随着固定切削元件31在轴向上偏离切削面51而延伸到切削面51。
还参照图5，当腿部17、121可被焊接在钻头体13的狭槽123内时，可额外地或替代性地利用一个或更多个楔子201将腿部固定。也可以将楔子201焊接和/或螺栓连接至钻头体13，例如通过使用紧固件或螺栓127进行连接。
如图6和图7所示，狭槽123的侧壁或称为侧面135可以是倾斜的。更具体地说，侧壁135a中的第一个侧壁可以朝向另一侧壁成锐角141地倾斜，而另一侧壁135b可以远离所述第一个侧壁成钝角143地倾斜。利用这种结构，腿部17通过抵靠在狭槽123的成锐角的侧壁135a上的第一侧壁145a而螺栓连接至狭槽123中，从而局部地将腿部17锁定就位。腿部17、121的第一侧壁145a的锐角147优选地与狭槽123的第一侧壁135a的锐角141相匹配。在优选实施例中，腿部17的第二侧壁145b也以锐角149定位，该锐角可与腿部17的第一侧壁145a的锐角147相似或完全相同。然后楔子201在腿部17的成锐角的第二侧壁145b和狭槽123的成钝角的侧壁135b之间螺栓连接至狭槽123中。因为楔子201优选地具有形成图示的钝角151、153的两个钝角侧壁203、203a、203b，因此楔子201将腿部17牢牢地固定在狭槽123内，并且紧固楔子201的螺栓127被拧紧。然后可将塞子焊接在螺栓127上以防止螺栓127在操作期间转动，从而进一步将楔子201及腿部17固定在狭槽123中。
侧壁135可以是平行的，如图所示。在这种情况下，利用所示的平行的侧壁135，使腿部17保持就位的螺栓127有望比使楔子201保持就位的螺栓127承受更少的张力。
替代性地，相对于从90°的偏移，侧壁135a、135b可以以不同的角度倾斜。例如，第一侧壁135a和/或第二侧壁135b可以从钻头体13的轴向中心大致正直地向外以角度141定位，所述角度141是基本上切向的直角而非如图所示的锐角和钝角。以这种方式，狭槽123的侧壁135可离钻头体13的轴向中心更近并且随着各侧壁的向外延伸而向外成角并彼此远离。这种结构将会导致使腿部17和楔子201二者保持就位的螺栓127上具有相当大的张力载荷。
在又一实施例中，第一侧壁135a可以如图所示地成角，并且第二侧壁135b从钻头体13的轴向中心大致正直地向外定位。楔子201的成角的边203仍然会将腿部17压靠在第一侧壁135a上，从而将腿部17按住就位。作为替代，楔子201的第一侧壁203a可如图所示地成角，并且楔子201的第二侧壁203b与第二侧壁135b一起从钻头体13的轴向中心大致正直地向外定位。在这种情况下，楔子201的成角边203a会将腿部17按压在第一侧壁135a上，从而将腿部17按住就位。然而，在任何情况下，对于从钻头体13的轴向中心正直地向外，并不期望楔子201的侧壁203、203a、203b平行，而是不必具有相似的角度。
参照图8，希望腿部17的压靠在狭槽的轴向端303上的轴向端301承载钻孔操作的大部分（如果不是全部的话）正常轴向载荷。在一些实施例中，腿部17可包括径向向内延伸的键305，该键延伸到狭槽123中的键槽307中。在这种情况下，键305的压靠在钻头体13上的上端309可以承载钻孔操作的一些正常轴向载荷。然而，也许更为重要的是，键305的压靠在钻头体13上的下端311可承载腿部17所受的任何反向轴向载荷，例如来自反向扩眼时产生的反向轴向载荷。该键305还可以防止螺栓127承载较大的或任何的剪切载荷。在一些实施例中，键305可以固定地紧固到腿部17，甚至可以采取整体凸出区域或凸台的形式，该整体凸出区域或凸台延伸到狭槽123中的键槽内以调节这些载荷。
在任何情况下，本发明的楔子201都克服了通常与模块部件及其组件相关的公差问题。本发明的楔子201及其它方面也最小化或消除了任何将腿部17焊接到钻头体13的需要，从而进一步有利于装配过程并同时仍然提供了钻头11的紧固装配。另外，由于主要部件仅通过螺栓连接在一起，因此在钻头11的返工期间可只对少数（如果有的话）焊接部件进行处理，这使得这些特征大大简化了钻头维修。例如，可简单地将焊接的塞子钻出，从而提供螺栓127的通道以根据需要移除和/或替换腿部17。
在不偏离本发明精神的情况下可以利用上述发明的一个或多个方面设计出其它以及进一步的实施例。另外，本发明的各种方法和实施例可相互组合以便产生所披露方法和实施例的各种变型。对单数元件的论述可包括复数元件，反之亦然。例如，每条腿部17可与多个楔子201一起使用。
步骤的次序可以以多种顺序来进行，除非另有明确限制。这里所述的各个步骤可以与其它步骤组合、插入所述步骤之间和/或分成多个步骤。类似的，已对在功能上对元件进行了说明，这些元件可以作为独立的部件实施或者可以组合成具有多功能的部件。
已经通过优选和其它实施例对本发明进行了说明，但是并没有对本发明的每一种实施例进行说明。本领域的普通技术人员能够获得对于所描述的实施例来说明显的修改和变更。已公开的和未公开的实施例并不旨在限制或限定本申请人所想到的本发明的范围或应用，相反，根据专利法，申请人旨在充分保护在所附权利要求的等效范围或者界限内的所有这些修改和改进。

Claims (20)

1.一种钻土钻头，包括：
一条或更多条腿部；
钻头体，所述钻头体具有用于容纳所述腿部的狭槽；以及
一个或更多个楔子，所述楔子位于所述腿部和所述狭槽之间并将所述腿部固定在所述狭槽内。
2.如权利要求1所述的钻头，其中，所述狭槽具有两个平行的侧壁。
3.如权利要求2所述的钻头，其中，所述侧壁中的一个侧壁形成锐角，而另一个侧壁形成钝角。
4.如权利要求2所述的钻头，其中，所述楔子紧挨着成钝角的侧壁而被固定。
5.如权利要求1所述的钻头，其中，所述楔子具有两个成钝角的侧壁。
6.如权利要求1所述的钻头，所述钻头还包括一个或更多个穿过各个楔子的螺栓，所述螺栓将所述楔子和所述腿部二者固定到所述钻头体。
7.如权利要求1所述的钻头，其中，所述狭槽具有两个彼此不平行的侧壁。
8.如权利要求7所述的钻头，其中，所述侧壁中的第一侧壁从所述钻头体的轴向中心大致正直地向外延伸。
9.如权利要求8所述的钻头，其中，所述楔子紧挨着所述第一侧壁而被固定。
10.如权利要求1所述的钻头，其中，所述楔子的成钝角的侧壁紧挨着所述腿部的成锐角的侧壁而被固定。
11.如权利要求1所述的钻头，其中，键从各腿部延伸到所述钻头体中。
12.一种钻土钻头，包括：
一条或更多条腿部，所述腿部具有相应的牙轮；
钻头体，所述钻头体具有刮刀和用于容纳所述腿部的狭槽，其中，所述狭槽具有两个平行的侧壁，使得所述侧壁中的一个侧壁形成锐角，而另一个侧壁形成钝角；以及
一个或更多个楔子，所述楔子位于所述腿部和所述狭槽之间并将所述腿部固定在所述狭槽内。
13.如权利要求12所述的钻头，其中，所述楔子紧挨着成钝角的侧壁而被固定。
14.如权利要求12所述的钻头，所述钻头还包括一个或更多个穿过各个楔子的螺栓，所述螺栓将所述楔子和所述腿部二者固定到所述钻头体。
15.如权利要求12所述的钻头，其中，所述楔子的成钝角的侧壁紧挨着所述腿部的成锐角的侧壁而被固定。
16.如权利要求12所述的钻头，其中，键从各腿部延伸到所述钻头体中。
17.一种组装钻土钻头的方法，所述方法包括以下步骤：
从多个预制腿部中选择一条或更多条腿部；
从多个预制钻头体中选择一钻头体，所述钻头体具有用于容纳所述腿部的狭槽；
将所述腿部通过螺栓连接在所述狭槽内；以及
将具有至少一个成角的侧壁的楔子通过螺栓连接在所述腿部和所述狭槽的侧壁之间，从而在不需焊接的情况下将所述腿部固定在所述狭槽内。
18.如权利要求17所述的方法，其中，通过所述楔子上紧螺栓而将所述腿部压靠在所述狭槽的侧壁上。
19.如权利要求17所述的方法，所述方法还包括紧挨着所处狭槽的成钝角的侧壁放置所述楔子。
20.如权利要求17所述的方法，所述方法还包括紧挨着所处腿部的成锐角的侧壁放置所述楔子。
CN201280013361.9A 2011-02-11 2012-02-07 用于将腿部保持在混合式钻头上的系统和方法 Active CN103443388B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161441907P 2011-02-11 2011-02-11
US61/441,907 2011-02-11
PCT/US2012/024134 WO2012109234A2 (en) 2011-02-11 2012-02-07 System and method for leg retention on hybrid bits

Publications (2)

Publication Number Publication Date
CN103443388A true CN103443388A (zh) 2013-12-11
CN103443388B CN103443388B (zh) 2015-10-21

Family

ID=45688261

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280013361.9A Active CN103443388B (zh) 2011-02-11 2012-02-07 用于将腿部保持在混合式钻头上的系统和方法

Country Status (11)

Country Link
US (3) US20120205160A1 (zh)
EP (1) EP2673451B1 (zh)
CN (1) CN103443388B (zh)
BR (1) BR112013020524B1 (zh)
CA (1) CA2826685C (zh)
MX (1) MX337212B (zh)
PL (1) PL2673451T3 (zh)
RU (1) RU2601645C2 (zh)
SG (1) SG192650A1 (zh)
WO (1) WO2012109234A2 (zh)
ZA (1) ZA201306003B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112204221A (zh) * 2018-05-18 2021-01-08 贝克休斯控股有限责任公司 具有固定刀片和可旋转切割结构的钻地工具及相关方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
CA2773897A1 (en) 2009-09-16 2011-03-24 Baker Hughes Incorporated External, divorced pdc bearing assemblies for hybrid drill bits
CA2804041C (en) 2010-06-29 2016-04-05 Baker Hughes Incorporated Hybrid drill bit with anti-tracking features
US9782857B2 (en) 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
CA2826685C (en) 2011-02-11 2016-03-29 Baker Hughes Incorporated System and method for leg retention on hybrid bits
EP3159475B1 (en) 2011-11-15 2019-03-27 Baker Hughes, a GE company, LLC Hybrid drill bits having increased drilling efficiency
CN203248077U (zh) * 2013-01-31 2013-10-23 郑宗杰 硬岩取芯钻头组件
SG11201606085PA (en) * 2014-01-31 2016-08-30 Baker Hughes Inc Hybrid drill bit having increased service life
EP3146137B1 (en) * 2014-05-23 2019-09-11 Baker Hughes, a GE company, LLC Hybrid bit with mechanically attached rolling cutter assembly
BR112016027337A8 (pt) * 2014-05-23 2021-05-04 Baker Hughes Inc broca híbrida com montagem de cortador mecanicamente fixada
US11428050B2 (en) 2014-10-20 2022-08-30 Baker Hughes Holdings Llc Reverse circulation hybrid bit
US10156099B2 (en) * 2016-01-13 2018-12-18 Baker Hughes Incorporated Downhole tools including fastening assemblies, and related methods
CN108625789B (zh) * 2018-05-22 2023-06-09 西南石油大学 分体式牙轮与pdc的复合钻头
US11174683B2 (en) * 2019-02-25 2021-11-16 Century Products, Inc. Tapered joint for securing cone arm in hole opener
US11732531B2 (en) 2021-06-04 2023-08-22 Baker Hughes Oilfield Operations Llc Modular earth boring tools having fixed blades and removable blade assemblies and related methods

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190310750A (en) * 1903-05-12 1904-03-31 Richard Nicholson Improvements in and relating to Rock Drilling Apparatus and the like.
US993972A (en) * 1910-05-23 1911-05-30 Twentieth Century Drill Company Drill-bit.
US2575438A (en) * 1949-09-28 1951-11-20 Kennametal Inc Percussion drill bit body
US4359114A (en) * 1980-12-10 1982-11-16 Robbins Machine, Inc. Raise drill bit inboard cutter assembly
US4456082A (en) * 1981-05-18 1984-06-26 Smith International, Inc. Expandable rock bit
CN2380677Y (zh) * 1999-06-02 2000-05-31 杜晓瑞 混合型钻头
CN2386178Y (zh) * 1999-03-23 2000-07-05 江汉石油钻头股份有限公司 一种混合钻头
US6745858B1 (en) * 2001-08-24 2004-06-08 Rock Bit International Adjustable earth boring device

Family Cites Families (360)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US372253A (en) 1887-10-25 Manufacture of glass tile
USRE23416E (en) 1951-10-16 Drill
US3126067A (en) 1964-03-24 Roller bit with inserts
US3126066A (en) 1964-03-24 Rotary drill bit with wiper blade
US930759A (en) 1908-11-20 1909-08-10 Howard R Hughes Drill.
US1388424A (en) 1919-06-27 1921-08-23 Edward A George Rotary bit
US1394769A (en) 1920-05-18 1921-10-25 C E Reed Drill-head for oil-wells
US1519641A (en) 1920-10-12 1924-12-16 Walter N Thompson Rotary underreamer
US1537550A (en) 1923-01-13 1925-05-12 Reed Roller Bit Co Lubricator for deep-well-drilling apparatus
US1729062A (en) 1927-08-15 1929-09-24 Reed Roller Bit Co Roller-cutter mounting
US1801720A (en) 1927-11-26 1931-04-21 Reed Roller Bit Co Roller bit
US1821474A (en) 1927-12-05 1931-09-01 Sullivan Machinery Co Boring tool
US1896243A (en) 1928-04-12 1933-02-07 Hughes Tool Co Cutter support for well drills
US1816568A (en) 1929-06-05 1931-07-28 Reed Roller Bit Co Drill bit
US1874066A (en) 1930-04-28 1932-08-30 Floyd L Scott Combination rolling and scraping cutter drill
US1932487A (en) 1930-07-11 1933-10-31 Hughes Tool Co Combination scraping and rolling cutter drill
US1879127A (en) 1930-07-21 1932-09-27 Hughes Tool Co Combination rolling and scraping cutter bit
US2030722A (en) 1933-12-01 1936-02-11 Hughes Tool Co Cutter assembly
US2117481A (en) 1935-02-19 1938-05-17 Globe Oil Tools Co Rock core drill head
US2089187A (en) 1935-05-18 1937-08-10 Celanese Corp Preparation and use of textile threads
US2126036A (en) 1936-11-04 1938-08-09 Chicago Pneumatic Tool Co Earth boring drill
US2119618A (en) 1937-08-28 1938-06-07 John A Zublin Oversize hole drilling mechanism
US2198849A (en) 1938-06-09 1940-04-30 Reuben L Waxler Drill
US2204657A (en) 1938-07-12 1940-06-18 Brendel Clyde Roller bit
US2184067A (en) 1939-01-03 1939-12-19 John A Zublin Drill bit
US2288433A (en) 1939-08-19 1942-06-30 Cons Gas Electric Light And Po Welding joint
US2216894A (en) * 1939-10-12 1940-10-08 Reed Roller Bit Co Rock bit
US2244537A (en) 1939-12-22 1941-06-03 Archer W Kammerer Well drilling bit
US2320136A (en) 1940-09-30 1943-05-25 Archer W Kammerer Well drilling bit
US2297157A (en) 1940-11-16 1942-09-29 Mcclinton John Drill
US2318370A (en) * 1940-12-06 1943-05-04 Kasner M Oil well drilling bit
US2320137A (en) 1941-08-12 1943-05-25 Archer W Kammerer Rotary drill bit
US2358642A (en) 1941-11-08 1944-09-19 Archer W Kammerer Rotary drill bit
US2380112A (en) 1942-01-02 1945-07-10 Kinnear Clarence Wellington Drill
US2533258A (en) 1945-11-09 1950-12-12 Hughes Tool Co Drill cutter
US2533259A (en) 1946-06-28 1950-12-12 Hughes Tool Co Cluster tooth cutter
US2520517A (en) 1946-10-25 1950-08-29 Manley L Natland Apparatus for drilling wells
US2557302A (en) 1947-12-12 1951-06-19 Aubrey F Maydew Combination drag and rotary drilling bit
US2628821A (en) * 1950-10-07 1953-02-17 Kennametal Inc Percussion drill bit body
US2661931A (en) 1950-12-04 1953-12-08 Security Engineering Division Hydraulic rotary rock bit
US2719026A (en) 1952-04-28 1955-09-27 Reed Roller Bit Co Earth boring drill
US2725215A (en) 1953-05-05 1955-11-29 Donald B Macneir Rotary rock drilling tool
US2807444A (en) 1953-08-31 1957-09-24 Hughes Tool Co Well drill
US2815932A (en) 1956-02-29 1957-12-10 Norman E Wolfram Retractable rock drill bit apparatus
US2994389A (en) 1957-06-07 1961-08-01 Le Bus Royalty Company Combined drilling and reaming apparatus
US3066749A (en) 1959-08-10 1962-12-04 Jersey Prod Res Co Combination drill bit
US3010708A (en) 1960-04-11 1961-11-28 Goodman Mfg Co Rotary mining head and core breaker therefor
US3050293A (en) 1960-05-12 1962-08-21 Goodman Mfg Co Rotary mining head and core breaker therefor
US3055443A (en) 1960-05-31 1962-09-25 Jersey Prod Res Co Drill bit
US3039503A (en) * 1960-08-17 1962-06-19 Nell C Mainone Means for mounting cutter blades on a cylindrical cutterhead
US3239431A (en) 1963-02-21 1966-03-08 Knapp Seth Raymond Rotary well bits
US3174564A (en) 1963-06-10 1965-03-23 Hughes Tool Co Combination core bit
US3250337A (en) 1963-10-29 1966-05-10 Max J Demo Rotary shock wave drill bit
US3269469A (en) 1964-01-10 1966-08-30 Hughes Tool Co Solid head rotary-percussion bit with rolling cutters
US3294186A (en) 1964-06-22 1966-12-27 Tartan Ind Inc Rock bits and methods of making the same
US3397751A (en) 1966-03-02 1968-08-20 Continental Oil Co Asymmetric three-cone rock bit
US3387673A (en) 1966-03-15 1968-06-11 Ingersoll Rand Co Rotary percussion gang drill
US3424258A (en) 1966-11-16 1969-01-28 Japan Petroleum Dev Corp Rotary bit for use in rotary drilling
DE1301784B (de) 1968-01-27 1969-08-28 Deutsche Erdoel Ag Kombinationsbohrmeissel fuer plastisches Gebirge
US3583501A (en) 1969-03-06 1971-06-08 Mission Mfg Co Rock bit with powered gauge cutter
USRE28625E (en) 1970-08-03 1975-11-25 Rock drill with increased bearing life
US3760894A (en) 1971-11-10 1973-09-25 M Pitifer Replaceable blade drilling bits
US3907191A (en) 1973-10-24 1975-09-23 Dresser Ind Method of constructing a rotary rock bit
US4229638A (en) 1975-04-01 1980-10-21 Dresser Industries, Inc. Unitized rotary rock bit
US4006788A (en) 1975-06-11 1977-02-08 Smith International, Inc. Diamond cutter rock bit with penetration limiting
US4153832A (en) 1975-09-11 1979-05-08 Kobe Steel, Ltd. Overhead submerged arc welding process
JPS5382601A (en) 1976-12-28 1978-07-21 Tokiwa Kogyo Kk Rotary grinding type excavation drill head
SE7701680L (sv) 1977-02-16 1978-08-16 Skf Ab Axiallager for en rulle i en rullborrkrona sw 77 004 sw
US4108259A (en) * 1977-05-23 1978-08-22 Smith International, Inc. Raise drill with removable stem
US4140189A (en) 1977-06-06 1979-02-20 Smith International, Inc. Rock bit with diamond reamer to maintain gage
US4270812A (en) 1977-07-08 1981-06-02 Thomas Robert D Drill bit bearing
SU891882A1 (ru) * 1977-07-23 1981-12-23 Среднеазиатский Научно-Исследовательский Институт Геологии И Минерального Сырья Комбинированное буровое долото
US4187922A (en) 1978-05-12 1980-02-12 Dresser Industries, Inc. Varied pitch rotary rock bit
DE2960568D1 (en) 1978-05-30 1981-11-05 Grootcon Uk Ltd Method of welding metal parts
US4285409A (en) 1979-06-28 1981-08-25 Smith International, Inc. Two cone bit with extended diamond cutters
US4260203A (en) 1979-09-10 1981-04-07 Smith International, Inc. Bearing structure for a rotary rock bit
US4527637A (en) 1981-05-11 1985-07-09 Bodine Albert G Cycloidal drill bit
US4293048A (en) 1980-01-25 1981-10-06 Smith International, Inc. Jet dual bit
US4408671A (en) 1980-04-24 1983-10-11 Munson Beauford E Roller cone drill bit
US4343371A (en) 1980-04-28 1982-08-10 Smith International, Inc. Hybrid rock bit
US4369849A (en) 1980-06-05 1983-01-25 Reed Rock Bit Company Large diameter oil well drilling bit
US4359112A (en) 1980-06-19 1982-11-16 Smith International, Inc. Hybrid diamond insert platform locator and retention method
US4320808A (en) 1980-06-24 1982-03-23 Garrett Wylie P Rotary drill bit
US4386669A (en) 1980-12-08 1983-06-07 Evans Robert F Drill bit with yielding support and force applying structure for abrasion cutting elements
US4428687A (en) 1981-05-11 1984-01-31 Hughes Tool Company Floating seal for earth boring bit
US4417629A (en) 1981-05-13 1983-11-29 Reed Rock Bit Company Drill bit and method of manufacture
US4468138A (en) 1981-09-28 1984-08-28 Maurer Engineering Inc. Manufacture of diamond bearings
US4448269A (en) 1981-10-27 1984-05-15 Hitachi Construction Machinery Co., Ltd. Cutter head for pit-boring machine
SE446646B (sv) 1981-12-15 1986-09-29 Santrade Ltd Bergborrkrona och sett att tillverka denna
US4410284A (en) 1982-04-22 1983-10-18 Smith International, Inc. Composite floating element thrust bearing
US4527644A (en) 1983-03-25 1985-07-09 Allam Farouk M Drilling bit
US4444281A (en) 1983-03-30 1984-04-24 Reed Rock Bit Company Combination drag and roller cutter drill bit
EP0162107A1 (en) 1983-11-18 1985-11-27 Rock Bit Industries U.S.A. Inc. Hybrid rock bit
US5028177A (en) 1984-03-26 1991-07-02 Eastman Christensen Company Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks
US4726718A (en) 1984-03-26 1988-02-23 Eastman Christensen Co. Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks
AU3946885A (en) 1984-03-26 1985-10-03 Norton Christensen Inc. Cutting element using polycrystalline diamond disks
US4525178A (en) 1984-04-16 1985-06-25 Megadiamond Industries, Inc. Composite polycrystalline diamond
SE457656B (sv) * 1984-06-18 1989-01-16 Santrade Ltd Borrkrona innefattande en roterande skaerrulle och borrhuvud innefattande saadan borrkrona
US4738389A (en) 1984-10-19 1988-04-19 Martin Marietta Corporation Welding using metal-ceramic composites
US4572306A (en) 1984-12-07 1986-02-25 Dorosz Dennis D E Journal bushing drill bit construction
US4738322A (en) 1984-12-21 1988-04-19 Smith International Inc. Polycrystalline diamond bearing system for a roller cone rock bit
US4802539A (en) 1984-12-21 1989-02-07 Smith International, Inc. Polycrystalline diamond bearing system for a roller cone rock bit
US4600064A (en) 1985-02-25 1986-07-15 Hughes Tool Company Earth boring bit with bearing sleeve
US4657091A (en) 1985-05-06 1987-04-14 Robert Higdon Drill bits with cone retention means
SU1331988A1 (ru) 1985-07-12 1987-08-23 И.И. Барабашкин, И. В. Воевидко и В. М. Ивасив Калибратор
US4664705A (en) 1985-07-30 1987-05-12 Sii Megadiamond, Inc. Infiltrated thermally stable polycrystalline diamond
GB8528894D0 (en) 1985-11-23 1986-01-02 Nl Petroleum Prod Rotary drill bits
US4690228A (en) 1986-03-14 1987-09-01 Eastman Christensen Company Changeover bit for extended life, varied formations and steady wear
US4706765A (en) 1986-08-11 1987-11-17 Four E Inc. Drill bit assembly
US4865137A (en) 1986-08-13 1989-09-12 Drilex Systems, Inc. Drilling apparatus and cutter
GB2194571B (en) 1986-08-13 1990-05-16 A Z Int Tool Co Drilling apparatus and cutter
US5030276A (en) 1986-10-20 1991-07-09 Norton Company Low pressure bonding of PCD bodies and method
US5116568A (en) 1986-10-20 1992-05-26 Norton Company Method for low pressure bonding of PCD bodies
US4943488A (en) 1986-10-20 1990-07-24 Norton Company Low pressure bonding of PCD bodies and method for drill bits and the like
US4727942A (en) 1986-11-05 1988-03-01 Hughes Tool Company Compensator for earth boring bits
DE3709836C1 (de) 1987-03-25 1988-09-29 Eastman Christensen Co Gleitlager fuer Tiefbohrwerkzeuge
US4765205A (en) 1987-06-01 1988-08-23 Bob Higdon Method of assembling drill bits and product assembled thereby
US4763736A (en) 1987-07-08 1988-08-16 Varel Manufacturing Company Asymmetrical rotary cone bit
US4756631A (en) 1987-07-24 1988-07-12 Smith International, Inc. Diamond bearing for high-speed drag bits
WO1990008244A1 (en) 1987-08-24 1990-07-26 Allen Kent Rives Arrangement for reducing seal damage between rotatable, and stationary members
CA1270479A (en) 1987-12-14 1990-06-19 Jerome Labrosse Tubing bit opener
US4819703A (en) * 1988-05-23 1989-04-11 Verle L. Rice Blade mount for planar head
USRE37450E1 (en) 1988-06-27 2001-11-20 The Charles Machine Works, Inc. Directional multi-blade boring head
US5027912A (en) 1988-07-06 1991-07-02 Baker Hughes Incorporated Drill bit having improved cutter configuration
US4874047A (en) 1988-07-21 1989-10-17 Cummins Engine Company, Inc. Method and apparatus for retaining roller cone of drill bit
US4875532A (en) 1988-09-19 1989-10-24 Dresser Industries, Inc. Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material
US4880068A (en) 1988-11-21 1989-11-14 Varel Manufacturing Company Rotary drill bit locking mechanism
US4981184A (en) 1988-11-21 1991-01-01 Smith International, Inc. Diamond drag bit for soft formations
US4892159A (en) 1988-11-29 1990-01-09 Exxon Production Research Company Kerf-cutting apparatus and method for improved drilling rates
NO169735C (no) 1989-01-26 1992-07-29 Geir Tandberg Kombinasjonsborekrone
GB8907618D0 (en) 1989-04-05 1989-05-17 Morrison Pumps Sa Drilling
US4932484A (en) 1989-04-10 1990-06-12 Amoco Corporation Whirl resistant bit
US4953641A (en) 1989-04-27 1990-09-04 Hughes Tool Company Two cone bit with non-opposite cones
US4936398A (en) 1989-07-07 1990-06-26 Cledisc International B.V. Rotary drilling device
US5166495A (en) 1989-09-11 1992-11-24 Esab Aktiebolag Method and apparatus for automatic multi-run welding
US4976324A (en) 1989-09-22 1990-12-11 Baker Hughes Incorporated Drill bit having diamond film cutting surface
US5049164A (en) 1990-01-05 1991-09-17 Norton Company Multilayer coated abrasive element for bonding to a backing
US4991671A (en) 1990-03-13 1991-02-12 Camco International Inc. Means for mounting a roller cutter on a drill bit
US4984643A (en) 1990-03-21 1991-01-15 Hughes Tool Company Anti-balling earth boring bit
US5027914A (en) * 1990-06-04 1991-07-02 Wilson Steve B Pilot casing mill
US5137097A (en) * 1990-10-30 1992-08-11 Modular Engineering Modular drill bit
US5199516A (en) * 1990-10-30 1993-04-06 Modular Engineering Modular drill bit
US5224560A (en) * 1990-10-30 1993-07-06 Modular Engineering Modular drill bit
US5037212A (en) 1990-11-29 1991-08-06 Smith International, Inc. Bearing structure for downhole motors
US5145017A (en) 1991-01-07 1992-09-08 Exxon Production Research Company Kerf-cutting apparatus for increased drilling rates
US5092687A (en) 1991-06-04 1992-03-03 Anadrill, Inc. Diamond thrust bearing and method for manufacturing same
US5941322A (en) 1991-10-21 1999-08-24 The Charles Machine Works, Inc. Directional boring head with blade assembly
US5253939A (en) 1991-11-22 1993-10-19 Anadrill, Inc. High performance bearing pad for thrust bearing
US5238074A (en) 1992-01-06 1993-08-24 Baker Hughes Incorporated Mosaic diamond drag bit cutter having a nonuniform wear pattern
US5346026A (en) 1992-01-31 1994-09-13 Baker Hughes Incorporated Rolling cone bit with shear cutting gage
US5467836A (en) 1992-01-31 1995-11-21 Baker Hughes Incorporated Fixed cutter bit with shear cutting gage
US5287936A (en) 1992-01-31 1994-02-22 Baker Hughes Incorporated Rolling cone bit with shear cutting gage
NO176528C (no) 1992-02-17 1995-04-19 Kverneland Klepp As Anordning ved borekroner
RU2034126C1 (ru) * 1992-03-10 1995-04-30 Сургутское отделение Западно-Сибирского научно-исследовательского и проектно-конструкторского института технологии глубокого разведочного бурения Разборное буровое долото
US5342129A (en) 1992-03-30 1994-08-30 Dennis Tool Company Bearing assembly with sidewall-brazed PCD plugs
EP0569663A1 (en) 1992-05-15 1993-11-18 Baker Hughes Incorporated Improved anti-whirl drill bit
US5558170A (en) 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
US5289889A (en) 1993-01-21 1994-03-01 Marvin Gearhart Roller cone core bit with spiral stabilizers
US5361859A (en) 1993-02-12 1994-11-08 Baker Hughes Incorporated Expandable gage bit for drilling and method of drilling
US5560440A (en) 1993-02-12 1996-10-01 Baker Hughes Incorporated Bit for subterranean drilling fabricated from separately-formed major components
US6045029A (en) 1993-04-16 2000-04-04 Baker Hughes Incorporated Earth-boring bit with improved rigid face seal
US6068070A (en) 1997-09-03 2000-05-30 Baker Hughes Incorporated Diamond enhanced bearing for earth-boring bit
US6209185B1 (en) 1993-04-16 2001-04-03 Baker Hughes Incorporated Earth-boring bit with improved rigid face seal
US5355559A (en) 1993-04-26 1994-10-18 Amerock Corporation Hinge for inset doors
US5351770A (en) 1993-06-15 1994-10-04 Smith International, Inc. Ultra hard insert cutters for heel row rotary cone rock bit applications
GB9314954D0 (en) 1993-07-16 1993-09-01 Camco Drilling Group Ltd Improvements in or relating to torary drill bits
ES2129086T3 (es) 1994-01-29 1999-06-01 Asea Brown Boveri Procedimiento para unir piezas metalicas por medio de soldadura por fusion con arco voltaico.
US5429200A (en) 1994-03-31 1995-07-04 Dresser Industries, Inc. Rotary drill bit with improved cutter
US5452771A (en) 1994-03-31 1995-09-26 Dresser Industries, Inc. Rotary drill bit with improved cutter and seal protection
US5472057A (en) 1994-04-11 1995-12-05 Atlantic Richfield Company Drilling with casing and retrievable bit-motor assembly
US5595255A (en) * 1994-08-08 1997-01-21 Dresser Industries, Inc. Rotary cone drill bit with improved support arms
US5439067B1 (en) * 1994-08-08 1997-03-04 Dresser Ind Rock bit with enhanced fluid return area
US5606895A (en) 1994-08-08 1997-03-04 Dresser Industries, Inc. Method for manufacture and rebuild a rotary drill bit
US5439068B1 (en) 1994-08-08 1997-01-14 Dresser Ind Modular rotary drill bit
US5452770A (en) 1994-08-30 1995-09-26 Briscoe Tool Company Rock bit and improved forging method for manufacturing thereof
US5513715A (en) 1994-08-31 1996-05-07 Dresser Industries, Inc. Flat seal for a roller cone rock bit
US5494123A (en) 1994-10-04 1996-02-27 Smith International, Inc. Drill bit with protruding insert stabilizers
US5547033A (en) 1994-12-07 1996-08-20 Dresser Industries, Inc. Rotary cone drill bit and method for enhanced lifting of fluids and cuttings
US5553681A (en) 1994-12-07 1996-09-10 Dresser Industries, Inc. Rotary cone drill bit with angled ramps
US5755297A (en) * 1994-12-07 1998-05-26 Dresser Industries, Inc. Rotary cone drill bit with integral stabilizers
US5593231A (en) 1995-01-17 1997-01-14 Dresser Industries, Inc. Hydrodynamic bearing
USD372253S (en) 1995-01-17 1996-07-30 Dresser Industries, Inc. Support arm and rotary cone for modular drill bit
US5996713A (en) 1995-01-26 1999-12-07 Baker Hughes Incorporated Rolling cutter bit with improved rotational stabilization
US5570750A (en) 1995-04-20 1996-11-05 Dresser Industries, Inc. Rotary drill bit with improved shirttail and seal protection
US5641029A (en) * 1995-06-06 1997-06-24 Dresser Industries, Inc. Rotary cone drill bit modular arm
US5695019A (en) 1995-08-23 1997-12-09 Dresser Industries, Inc. Rotary cone drill bit with truncated rolling cone cutters and dome area cutter inserts
USD384084S (en) 1995-09-12 1997-09-23 Dresser Industries, Inc. Rotary cone drill bit
US5695018A (en) 1995-09-13 1997-12-09 Baker Hughes Incorporated Earth-boring bit with negative offset and inverted gage cutting elements
CA2180066A1 (en) 1995-09-18 1997-03-19 Harold W. Seeds Method of welding aluminum drive shaft components
US5904213A (en) 1995-10-10 1999-05-18 Camco International (Uk) Limited Rotary drill bits
US5862871A (en) 1996-02-20 1999-01-26 Ccore Technology & Licensing Limited, A Texas Limited Partnership Axial-vortex jet drilling system and method
WO1997034071A1 (en) 1996-03-01 1997-09-18 Allen Kent Rives Cantilevered hole opener
US5642942A (en) 1996-03-26 1997-07-01 Smith International, Inc. Thrust plugs for rotary cone air bits
US6390210B1 (en) 1996-04-10 2002-05-21 Smith International, Inc. Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty
US6241034B1 (en) 1996-06-21 2001-06-05 Smith International, Inc. Cutter element with expanded crest geometry
US6116357A (en) 1996-09-09 2000-09-12 Smith International, Inc. Rock drill bit with back-reaming protection
US5904212A (en) 1996-11-12 1999-05-18 Dresser Industries, Inc. Gauge face inlay for bit hardfacing
BE1010802A3 (fr) 1996-12-16 1999-02-02 Dresser Ind Tete de forage.
BE1010801A3 (fr) 1996-12-16 1999-02-02 Dresser Ind Outil de forage et/ou de carottage.
US5839525A (en) 1996-12-23 1998-11-24 Camco International Inc. Directional drill bit
US5839526A (en) 1997-04-04 1998-11-24 Smith International, Inc. Rolling cone steel tooth bit with enhancements in cutter shape and placement
GB9708428D0 (en) 1997-04-26 1997-06-18 Camco Int Uk Ltd Improvements in or relating to rotary drill bits
US5944125A (en) 1997-06-19 1999-08-31 Varel International, Inc. Rock bit with improved thrust face
US6095265A (en) 1997-08-15 2000-08-01 Smith International, Inc. Impregnated drill bits with adaptive matrix
US6367568B2 (en) 1997-09-04 2002-04-09 Smith International, Inc. Steel tooth cutter element with expanded crest
US6173797B1 (en) 1997-09-08 2001-01-16 Baker Hughes Incorporated Rotary drill bits for directional drilling employing movable cutters and tandem gage pad arrangement with active cutting elements and having up-drill capability
US6321862B1 (en) 1997-09-08 2001-11-27 Baker Hughes Incorporated Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
WO1999019597A1 (en) * 1997-10-14 1999-04-22 Dresser Industries, Inc. Rock bit with improved nozzle placement
WO1999037880A1 (en) 1998-01-26 1999-07-29 Dresser Industries, Inc. Rotary cone drill bit with enhanced thrust bearing flange
WO1999037879A1 (en) 1998-01-26 1999-07-29 Dresser Industries, Inc. Rotary cone drill bit with enhanced journal bushing
US6568490B1 (en) * 1998-02-23 2003-05-27 Halliburton Energy Services, Inc. Method and apparatus for fabricating rotary cone drill bits
US6109375A (en) * 1998-02-23 2000-08-29 Dresser Industries, Inc. Method and apparatus for fabricating rotary cone drill bits
EP1066447B1 (en) 1998-03-26 2004-08-18 Halliburton Energy Services, Inc. Rotary cone drill bit with improved bearing system
US6206116B1 (en) 1998-07-13 2001-03-27 Dresser Industries, Inc. Rotary cone drill bit with machined cutting structure
US20040045742A1 (en) 2001-04-10 2004-03-11 Halliburton Energy Services, Inc. Force-balanced roller-cone bits, systems, drilling methods, and design methods
US6241036B1 (en) 1998-09-16 2001-06-05 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same
US6345673B1 (en) 1998-11-20 2002-02-12 Smith International, Inc. High offset bits with super-abrasive cutters
US6401844B1 (en) 1998-12-03 2002-06-11 Baker Hughes Incorporated Cutter with complex superabrasive geometry and drill bits so equipped
SE516079C2 (sv) 1998-12-18 2001-11-12 Sandvik Ab Rullborrkrona
US6279671B1 (en) 1999-03-01 2001-08-28 Amiya K. Panigrahi Roller cone bit with improved seal gland design
BE1012545A3 (fr) 1999-03-09 2000-12-05 Security Dbs Elargisseur de trou de forage.
EP1117896B1 (en) 1999-05-14 2004-12-01 RIVES, Allen Kent Hole opener with multisized, replaceable arms and cutters
US6190050B1 (en) 1999-06-22 2001-02-20 Camco International, Inc. System and method for preparing wear-resistant bearing surfaces
US6170582B1 (en) 1999-07-01 2001-01-09 Smith International, Inc. Rock bit cone retention system
JP2001026944A (ja) 1999-07-16 2001-01-30 Kobelco Contstruction Machinery Ltd 建設機械の排気系構造
CA2314114C (en) 1999-07-19 2007-04-10 Smith International, Inc. Improved rock drill bit with neck protection
US6684967B2 (en) 1999-08-05 2004-02-03 Smith International, Inc. Side cutting gage pad improving stabilization and borehole integrity
US6460631B2 (en) 1999-08-26 2002-10-08 Baker Hughes Incorporated Drill bits with reduced exposure of cutters
US6533051B1 (en) 1999-09-07 2003-03-18 Smith International, Inc. Roller cone drill bit shale diverter
US6386302B1 (en) 1999-09-09 2002-05-14 Smith International, Inc. Polycrystaline diamond compact insert reaming tool
ZA200005048B (en) 1999-09-24 2002-02-14 Varel International Inc Improved rotary cone bit for cutting removal.
US6460635B1 (en) 1999-10-25 2002-10-08 Kalsi Engineering, Inc. Load responsive hydrodynamic bearing
US6843333B2 (en) 1999-11-29 2005-01-18 Baker Hughes Incorporated Impregnated rotary drag bit
US6510906B1 (en) 1999-11-29 2003-01-28 Baker Hughes Incorporated Impregnated bit with PDC cutters in cone area
JP3513698B2 (ja) 1999-12-03 2004-03-31 飛島建設株式会社 掘削ヘッド
US8082134B2 (en) 2000-03-13 2011-12-20 Smith International, Inc. Techniques for modeling/simulating, designing optimizing, and displaying hybrid drill bits
US6439326B1 (en) 2000-04-10 2002-08-27 Smith International, Inc. Centered-leg roller cone drill bit
JP2001295576A (ja) 2000-04-12 2001-10-26 Japan National Oil Corp ビット装置
US6688410B1 (en) 2000-06-07 2004-02-10 Smith International, Inc. Hydro-lifter rock bit with PDC inserts
US6405811B1 (en) 2000-09-18 2002-06-18 Baker Hughes Corporation Solid lubricant for air cooled drill bit and method of drilling
US6386300B1 (en) 2000-09-19 2002-05-14 Curlett Family Limited Partnership Formation cutting method and system
US6592985B2 (en) 2000-09-20 2003-07-15 Camco International (Uk) Limited Polycrystalline diamond partially depleted of catalyzing material
DE60140617D1 (de) 2000-09-20 2010-01-07 Camco Int Uk Ltd Polykristalliner diamant mit einer an katalysatormaterial abgereicherten oberfläche
US6408958B1 (en) 2000-10-23 2002-06-25 Baker Hughes Incorporated Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped
KR100512804B1 (ko) 2000-12-01 2005-09-07 히다치 겡키 가부시키 가이샤 건설기계
US6561291B2 (en) 2000-12-27 2003-05-13 Smith International, Inc. Roller cone drill bit structure having improved journal angle and journal offset
US6427791B1 (en) * 2001-01-19 2002-08-06 The United States Of America As Represented By The United States Department Of Energy Drill bit assembly for releasably retaining a drill bit cutter
GB0102160D0 (en) 2001-01-27 2001-03-14 Schlumberger Holdings Cutting structure for earth boring drill bits
US7137460B2 (en) 2001-02-13 2006-11-21 Smith International, Inc. Back reaming tool
GB2372060B (en) * 2001-02-13 2004-01-07 Smith International Back reaming tool
US7140454B2 (en) 2001-07-06 2006-11-28 Shell Oil Company Well drilling bit
RU2287662C2 (ru) 2001-07-23 2006-11-20 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Нагнетание текучей среды в ствол скважины в зону перед буровым долотом
US6601661B2 (en) 2001-09-17 2003-08-05 Baker Hughes Incorporated Secondary cutting structure
US6684966B2 (en) 2001-10-18 2004-02-03 Baker Hughes Incorporated PCD face seal for earth-boring bit
US6742607B2 (en) 2002-05-28 2004-06-01 Smith International, Inc. Fixed blade fixed cutter hole opener
US6823951B2 (en) 2002-07-03 2004-11-30 Smith International, Inc. Arcuate-shaped inserts for drill bits
US6902014B1 (en) 2002-08-01 2005-06-07 Rock Bit L.P. Roller cone bi-center bit
US20040031625A1 (en) 2002-08-19 2004-02-19 Lin Chih C. DLC coating for earth-boring bit bearings
US6883623B2 (en) 2002-10-09 2005-04-26 Baker Hughes Incorporated Earth boring apparatus and method offering improved gage trimmer protection
US6913098B2 (en) 2002-11-21 2005-07-05 Reedeycalog, L.P. Sub-reamer for bi-center type tools
AU2003900227A0 (en) * 2003-01-20 2003-02-06 Transco Manufacturing Australia Pty Ltd Attachment means for drilling equipment
US7234550B2 (en) 2003-02-12 2007-06-26 Smith International, Inc. Bits and cutting structures
US20040156676A1 (en) 2003-02-12 2004-08-12 Brent Boudreaux Fastener for variable mounting
US20060032677A1 (en) 2003-02-12 2006-02-16 Smith International, Inc. Novel bits and cutting structures
GB2438550B (en) 2003-05-27 2008-01-02 Smith International Drill bit
US6904984B1 (en) 2003-06-20 2005-06-14 Rock Bit L.P. Stepped polycrystalline diamond compact insert
US7011170B2 (en) 2003-10-22 2006-03-14 Baker Hughes Incorporated Increased projection for compacts of a rolling cone drill bit
US7070011B2 (en) 2003-11-17 2006-07-04 Baker Hughes Incorporated Steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses
US7395882B2 (en) 2004-02-19 2008-07-08 Baker Hughes Incorporated Casing and liner drilling bits
CA2489187C (en) 2003-12-05 2012-08-28 Smith International, Inc. Thermally-stable polycrystalline diamond materials and compacts
US20050178587A1 (en) 2004-01-23 2005-08-18 Witman George B.Iv Cutting structure for single roller cone drill bit
US7195086B2 (en) 2004-01-30 2007-03-27 Anna Victorovna Aaron Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
US7360612B2 (en) 2004-08-16 2008-04-22 Halliburton Energy Services, Inc. Roller cone drill bits with optimized bearing structures
US7434632B2 (en) 2004-03-02 2008-10-14 Halliburton Energy Services, Inc. Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
US20050252691A1 (en) 2004-03-19 2005-11-17 Smith International, Inc. Drill bit having increased resistance to fatigue cracking and method of producing same
US7647993B2 (en) 2004-05-06 2010-01-19 Smith International, Inc. Thermally stable diamond bonded materials and compacts
US7628230B2 (en) 2004-08-05 2009-12-08 Baker Hughes Incorporated Wide groove roller cone bit
US7754333B2 (en) 2004-09-21 2010-07-13 Smith International, Inc. Thermally stable diamond polycrystalline diamond constructions
GB0423597D0 (en) 2004-10-23 2004-11-24 Reedhycalog Uk Ltd Dual-edge working surfaces for polycrystalline diamond cutting elements
US7350601B2 (en) 2005-01-25 2008-04-01 Smith International, Inc. Cutting elements formed from ultra hard materials having an enhanced construction
US7435478B2 (en) 2005-01-27 2008-10-14 Smith International, Inc. Cutting structures
GB2454122B (en) 2005-02-08 2009-07-08 Smith International Thermally stable polycrystalline diamond cutting elements and bits incorporating the same
US7350568B2 (en) 2005-02-09 2008-04-01 Halliburton Energy Services, Inc. Logging a well
US20060196699A1 (en) * 2005-03-04 2006-09-07 Roy Estes Modular kerfing drill bit
US7472764B2 (en) 2005-03-25 2009-01-06 Baker Hughes Incorporated Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
US7487849B2 (en) 2005-05-16 2009-02-10 Radtke Robert P Thermally stable diamond brazing
US7493973B2 (en) 2005-05-26 2009-02-24 Smith International, Inc. Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance
US7377341B2 (en) 2005-05-26 2008-05-27 Smith International, Inc. Thermally stable ultra-hard material compact construction
US20060278442A1 (en) 2005-06-13 2006-12-14 Kristensen Henry L Drill bit
US7320375B2 (en) 2005-07-19 2008-01-22 Smith International, Inc. Split cone bit
US7462003B2 (en) 2005-08-03 2008-12-09 Smith International, Inc. Polycrystalline diamond composite constructions comprising thermally stable diamond volume
US7416036B2 (en) 2005-08-12 2008-08-26 Baker Hughes Incorporated Latchable reaming bit
US7686104B2 (en) 2005-08-15 2010-03-30 Smith International, Inc. Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions
US7703982B2 (en) 2005-08-26 2010-04-27 Us Synthetic Corporation Bearing apparatuses, systems including same, and related methods
US9574405B2 (en) 2005-09-21 2017-02-21 Smith International, Inc. Hybrid disc bit with optimized PDC cutter placement
US7559695B2 (en) 2005-10-11 2009-07-14 Us Synthetic Corporation Bearing apparatuses, systems including same, and related methods
US7726421B2 (en) 2005-10-12 2010-06-01 Smith International, Inc. Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength
US7624825B2 (en) 2005-10-18 2009-12-01 Smith International, Inc. Drill bit and cutter element having aggressive leading side
US7152702B1 (en) * 2005-11-04 2006-12-26 Smith International, Inc. Modular system for a back reamer and method
US7802495B2 (en) 2005-11-10 2010-09-28 Baker Hughes Incorporated Methods of forming earth-boring rotary drill bits
US7270196B2 (en) 2005-11-21 2007-09-18 Hall David R Drill bit assembly
US7484576B2 (en) 2006-03-23 2009-02-03 Hall David R Jack element in communication with an electric motor and or generator
US7398837B2 (en) 2005-11-21 2008-07-15 Hall David R Drill bit assembly with a logging device
GB2433277B (en) 2005-12-14 2009-04-22 Smith International A drill bit
US7392862B2 (en) 2006-01-06 2008-07-01 Baker Hughes Incorporated Seal insert ring for roller cone bits
US7628234B2 (en) 2006-02-09 2009-12-08 Smith International, Inc. Thermally stable ultra-hard polycrystalline materials and compacts
US7621345B2 (en) 2006-04-03 2009-11-24 Baker Hughes Incorporated High density row on roller cone bit
WO2007127899A2 (en) 2006-04-28 2007-11-08 Halliburton Energy Services, Inc. Molds and methods of forming molds associated with manufacture of rotary drill bits and other downhole tools
US8061453B2 (en) 2006-05-26 2011-11-22 Smith International, Inc. Drill bit with asymmetric gage pad configuration
US7647991B2 (en) 2006-05-26 2010-01-19 Baker Hughes Incorporated Cutting structure for earth-boring bit to reduce tracking
US8006489B2 (en) 2006-09-07 2011-08-30 Volvo Group North America, Llc Exhaust diffuser for a vocational truck
GB2453875C (en) 2006-10-02 2009-09-16 Smith International Drill bits with dropping tendencies
US7387177B2 (en) 2006-10-18 2008-06-17 Baker Hughes Incorporated Bearing insert sleeve for roller cone bit
US8034136B2 (en) 2006-11-20 2011-10-11 Us Synthetic Corporation Methods of fabricating superabrasive articles
US8177000B2 (en) * 2006-12-21 2012-05-15 Sandvik Intellectual Property Ab Modular system for a back reamer and method
US7631709B2 (en) 2007-01-03 2009-12-15 Smith International, Inc. Drill bit and cutter element having chisel crest with protruding pilot portion
US8205692B2 (en) 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US7845435B2 (en) 2007-04-05 2010-12-07 Baker Hughes Incorporated Hybrid drill bit and method of drilling
US7841426B2 (en) 2007-04-05 2010-11-30 Baker Hughes Incorporated Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit
US7703557B2 (en) 2007-06-11 2010-04-27 Smith International, Inc. Fixed cutter bit with backup cutter elements on primary blades
US7681673B2 (en) 2007-06-12 2010-03-23 Smith International, Inc. Drill bit and cutting element having multiple cutting edges
US7847437B2 (en) 2007-07-30 2010-12-07 Gm Global Technology Operations, Inc. Efficient operating point for double-ended inverter system
US7823664B2 (en) 2007-08-17 2010-11-02 Baker Hughes Incorporated Corrosion protection for head section of earth boring bit
US7836975B2 (en) 2007-10-24 2010-11-23 Schlumberger Technology Corporation Morphable bit
WO2009064967A1 (en) 2007-11-14 2009-05-22 Baker Hughes Incorporated Earth-boring tools attachable to a casing string and methods for their manufacture
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
SA108290832B1 (ar) 2007-12-21 2012-06-05 بيكر هوغيس انكوربوريتد مثقاب ذو أذرع توازن يستخدم في حفر الآبار
US20090172172A1 (en) 2007-12-21 2009-07-02 Erik Lambert Graham Systems and methods for enabling peer-to-peer communication among visitors to a common website
US7938204B2 (en) 2007-12-21 2011-05-10 Baker Hughes Incorporated Reamer with improved hydraulics for use in a wellbore
US8028773B2 (en) 2008-01-16 2011-10-04 Smith International, Inc. Drill bit and cutter element having a fluted geometry
US20090236147A1 (en) 2008-03-20 2009-09-24 Baker Hughes Incorporated Lubricated Diamond Bearing Drill Bit
US20090272582A1 (en) * 2008-05-02 2009-11-05 Baker Hughes Incorporated Modular hybrid drill bit
US7861805B2 (en) 2008-05-15 2011-01-04 Baker Hughes Incorporated Conformal bearing for rock drill bit
US7703556B2 (en) 2008-06-04 2010-04-27 Baker Hughes Incorporated Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US9381600B2 (en) 2008-07-22 2016-07-05 Smith International, Inc. Apparatus and methods to manufacture PDC bits
US7819208B2 (en) 2008-07-25 2010-10-26 Baker Hughes Incorporated Dynamically stable hybrid drill bit
US7621346B1 (en) 2008-09-26 2009-11-24 Baker Hughes Incorporated Hydrostatic bearing
US7992658B2 (en) * 2008-11-11 2011-08-09 Baker Hughes Incorporated Pilot reamer with composite framework
US20100155146A1 (en) 2008-12-19 2010-06-24 Baker Hughes Incorporated Hybrid drill bit with high pilot-to-journal diameter ratio
US7845437B2 (en) 2009-02-13 2010-12-07 Century Products, Inc. Hole opener assembly and a cone arm forming a part thereof
US8141664B2 (en) 2009-03-03 2012-03-27 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US8056651B2 (en) 2009-04-28 2011-11-15 Baker Hughes Incorporated Adaptive control concept for hybrid PDC/roller cone bits
US8997898B2 (en) 2009-05-08 2015-04-07 Transco Manufacturing Australia Pty Ltd Drilling equipment and attachment means for the same
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
CN104533298B (zh) 2009-05-20 2017-09-29 史密斯国际股份有限公司 切削元件、用于制造这种切削元件的方法和包含这种切削元件的工具
US8157026B2 (en) 2009-06-18 2012-04-17 Baker Hughes Incorporated Hybrid bit with variable exposure
US8302709B2 (en) * 2009-06-22 2012-11-06 Sandvik Intellectual Property Ab Downhole tool leg retention methods and apparatus
US8672060B2 (en) 2009-07-31 2014-03-18 Smith International, Inc. High shear roller cone drill bits
US8448724B2 (en) 2009-10-06 2013-05-28 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8191635B2 (en) 2009-10-06 2012-06-05 Baker Hughes Incorporated Hole opener with hybrid reaming section
AU2010307012A1 (en) 2009-10-12 2012-05-03 Atlas Copco Secoroc Llc Downhole tool
US8201646B2 (en) 2009-11-20 2012-06-19 Edward Vezirian Method and apparatus for a true geometry, durable rotating drill bit
WO2011084944A2 (en) 2010-01-05 2011-07-14 Smith International, Inc. High-shear roller cone and pdc hybrid bit
US9067305B2 (en) 2010-05-18 2015-06-30 Element Six Abrasives S.A. Polycrystalline diamond
CA2804041C (en) 2010-06-29 2016-04-05 Baker Hughes Incorporated Hybrid drill bit with anti-tracking features
US8978786B2 (en) 2010-11-04 2015-03-17 Baker Hughes Incorporated System and method for adjusting roller cone profile on hybrid bit
US9782857B2 (en) * 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
CA2826685C (en) * 2011-02-11 2016-03-29 Baker Hughes Incorporated System and method for leg retention on hybrid bits
EP3159475B1 (en) 2011-11-15 2019-03-27 Baker Hughes, a GE company, LLC Hybrid drill bits having increased drilling efficiency
US20160319602A1 (en) 2013-12-31 2016-11-03 Smith International, Inc. Multi-Piece Body Manufacturing Method Of Hybrid Bit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190310750A (en) * 1903-05-12 1904-03-31 Richard Nicholson Improvements in and relating to Rock Drilling Apparatus and the like.
US993972A (en) * 1910-05-23 1911-05-30 Twentieth Century Drill Company Drill-bit.
US2575438A (en) * 1949-09-28 1951-11-20 Kennametal Inc Percussion drill bit body
US4359114A (en) * 1980-12-10 1982-11-16 Robbins Machine, Inc. Raise drill bit inboard cutter assembly
US4456082A (en) * 1981-05-18 1984-06-26 Smith International, Inc. Expandable rock bit
CN2386178Y (zh) * 1999-03-23 2000-07-05 江汉石油钻头股份有限公司 一种混合钻头
CN2380677Y (zh) * 1999-06-02 2000-05-31 杜晓瑞 混合型钻头
US6745858B1 (en) * 2001-08-24 2004-06-08 Rock Bit International Adjustable earth boring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112204221A (zh) * 2018-05-18 2021-01-08 贝克休斯控股有限责任公司 具有固定刀片和可旋转切割结构的钻地工具及相关方法

Also Published As

Publication number Publication date
MX2013009044A (es) 2014-02-11
US10132122B2 (en) 2018-11-20
EP2673451B1 (en) 2015-05-27
US20120205160A1 (en) 2012-08-16
WO2012109234A3 (en) 2013-04-25
SG192650A1 (en) 2013-09-30
EP2673451A2 (en) 2013-12-18
US20150197992A1 (en) 2015-07-16
BR112013020524A2 (pt) 2016-10-25
CA2826685A1 (en) 2012-08-16
US20160230468A1 (en) 2016-08-11
RU2013141472A (ru) 2015-03-20
CA2826685C (en) 2016-03-29
US9476259B2 (en) 2016-10-25
RU2601645C2 (ru) 2016-11-10
BR112013020524B1 (pt) 2020-09-29
WO2012109234A2 (en) 2012-08-16
ZA201306003B (en) 2014-05-28
CN103443388B (zh) 2015-10-21
MX337212B (es) 2016-02-17
PL2673451T3 (pl) 2015-11-30
US20180266184A9 (en) 2018-09-20

Similar Documents

Publication Publication Date Title
CN103443388B (zh) 用于将腿部保持在混合式钻头上的系统和方法
US9982488B2 (en) External, divorced PDC bearing assemblies for hybrid drill bits
US8028769B2 (en) Reamer with stabilizers for use in a wellbore
US8347989B2 (en) Hole opener with hybrid reaming section and method of making
US8978786B2 (en) System and method for adjusting roller cone profile on hybrid bit
US20090159341A1 (en) Reamer with balanced cutting structures for use in a wellbore
CA2776575A1 (en) Hole opener with hybrid reaming section
CN105672887A (zh) 具有防钻头循旧槽结构的混合式钻头
US10815733B2 (en) Underreamer cutter block
US7306061B2 (en) Mud diverter for earth-boring bit
CN108798514B (zh) 一种定向钻井金刚石钻头
CN106255797A (zh) 具有牙轮和轮盘的混合钻头
AU719474B2 (en) Stabiliser for borehole drilling apparatus
EP2486218B1 (en) Hole opener with hybrid reaming section
US20100071963A1 (en) Staggered Compact Row on Same Land
EP2486219B1 (en) Hole opener with hybrid reaming section
CA2776642A1 (en) Hole opener with hybrid reaming section

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant