-
31.发明授权公开(公告)号：US06883623B2
公开(公告)日：2005-04-26
申请号：US10268595
申请日：2002-10-09
申请人： Ronny D. McCormick , Mumtaz Ball , Mark E. Anderson , Mark W. Dykstra , Michael L. Doster , Matthew R. Isbell
发明人： Ronny D. McCormick , Mumtaz Ball , Mark E. Anderson , Mark W. Dykstra , Michael L. Doster , Matthew R. Isbell
CPC分类号： E21B10/55 , E21B10/46 , E21B17/1092
摘要： A rotary drill bit for drilling subterranean formations configured with at least one protective structure proximate to the rotationally leading and trailing edges of a gage trimmer, wherein the at least one protective structure is positioned at substantially the same exposure as its associated gage trimmer. Particularly, the apparatus of the present invention may provide protection for gage trimmers during drilling, tripping, and/or rotation within a casing; i.e., when changing a drilling fluid. Protective structures may be configured and located according to anticipated drilling conditions including helix angles. In addition, a protective structure may be proximate to more than one gage trimmer while having a substantially equal exposure to each associated gage trimmer. Methods of use and a method of rotary bit design are also disclosed.
摘要翻译： 一种用于钻探地下结构的旋转钻头，其配置有靠近量规修剪器的旋转前缘和后缘的至少一个保护结构，其中所述至少一个保护结构定位在与其相关联的量具修剪器基本相同的曝光处。 特别地，本发明的装置可以在套管内的钻孔，脱扣和/或旋转期间提供对量规修剪器的保护; 即，当改变钻井液时。 可以根据包括螺旋角度的预期钻井条件来构造和定位保护结构。 此外，保护结构可以接近多于一个量具修剪器，同时具有与每个相关联的量具修剪器基本相等的曝光。 还公开了使用方法和旋转钻头设计的方法。
-
公开(公告)号：US06510906B1
公开(公告)日：2003-01-28
申请号：US09709999
申请日：2000-11-10
IPC分类号： E21B1046
CPC分类号： E21B10/55 , E21B10/46 , E21B10/56 , E21B10/602
摘要： 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.
摘要翻译： 钻头采用多个离散的柱状金刚石砂粒浸渍的切割结构，其从在钻头面上限定多个流体通道的磨料颗粒浸渍刀片向上延伸。 位于钻头旋转大体方向的PDC刀具被放置在比较浅的钻头的锥体中，以通过较软的非磨蚀性地层提高钻井效率。 被配置为在其中接收喷嘴的多个端口用于改善钻井液流动和分布。 叶片可以以线性方式径向延伸，或者弯曲并向外螺旋到量规，以提供增加的叶片长度和增强的切割结构冗余度。
-
33.发明授权Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped 有权超级磨料切割组件，包括不同方向的切割器和如此装备的钻头公开(公告)号：US06408958B1
公开(公告)日：2002-06-25
申请号：US09694518
申请日：2000-10-23
申请人： Matthew R. Isbell , Rudolf C. O. Pessier , Michael L. Doster , Mark W. Dykstra , William H. Heuser
发明人： Matthew R. Isbell , Rudolf C. O. Pessier , Michael L. Doster , Mark W. Dykstra , William H. Heuser
IPC分类号： E21B1016
CPC分类号： E21B10/43 , E21B10/567 , E21B10/602
摘要： 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.
摘要翻译： 一种由第一和第二超级磨料切割元件组成的切割组件，包括至少一个旋转导向切割元件，该切割元件具有大致沿钻头的预期旋转方向定向的切割面，在该切割方向上安装有组件以切割具有切割边缘的地下岩层 切割面的外周边，以及基本上横向于预期钻头旋转方向定向的旋转后切割元件，并且包括相对较厚的超级磨料台，其被配置为用切割边缘切割地层，所述切割边缘位于所述切割面侧面的倾斜表面之间 超研磨台及其端面。 旋转拖尾切割元件可以与两个旋转导向的切割元件的至少部分横向中间位置相关联并且布置在钻头上的位置处。 还公开了配有切割组件的钻头。
-
公开(公告)号：US5479997A
公开(公告)日：1996-01-02
申请号：US293228
申请日：1994-08-19
CPC分类号： E21B17/1092 , E21B10/16 , E21B10/52
摘要： An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface intersecting a heel surface. A plurality of hard metal inserts are arranged in generally circumferential rows on the cutter and include a heel row of heel inserts on the heel surface of the cutter and a gage row of gage inserts on the gage surface of the cutter. At least one scraper insert, formed of material more wear-resistant than that of the cutter shell surface, is secured to the cutter shell surface generally at the intersection of the gage and heel surfaces. The scraper insert includes a gage and a heel insert surface. The gage and heel surfaces of the scraper insert converge to define a cutting edge for engagement with the sidewall of the borehole, the heel insert surface defining a positive rake angle with respect to the sidewall of the borehole of between 0 and 15 degrees. The cutting edge projects from the heel surface an amount not greater than the lesser of one-half the projection of the heel inserts from the heel surface and 30% of the pitch between the heel inserts.
摘要翻译： 钻头具有一个位体，并且至少一个切割器可旋转地固定到钻头体上。 切割器具有切割器外壳表面，其包括与跟部表面相交的计量表面。 多个硬金属插入件在切割器上大致圆周排布置，并且包括在切割器的跟部表面上的跟部插入物的后跟行和在切割器的计量表面上的量规插入件的一排。 至少一个由比刀具表面更耐磨的材料形成的刮刀插入件通常在量规和跟部表面的交叉处固定到刀具壳体表面。 刮刀插入件包括量具和跟部插入表面。 刮刀插入件的量规和跟部表面会聚以限定用于与钻孔的侧壁接合的切割边缘，该后跟插入表面相对于钻孔的侧壁在0和15度之间限定正的前角。 切割边缘从脚跟表面突出一个量不大于后跟插入物从后跟表面的一半投影中的较小者和脚后跟插入物之间的间距的30％的量。
-
公开(公告)号：US5311958A
公开(公告)日：1994-05-17
申请号：US949660
申请日：1992-09-23
摘要： An earth-boring bit is provided with three cutters, two of the three cutters are provided with heel disk cutting elements defined by a pair of generally oppositely facing disk surfaces that generally continuously converge to define a circumferential heel disk crest. One of the two cutters having heel disk elements is further provided with an inner disk cutting element.
摘要翻译： 一个镗孔设置有三个切割器，三个切割器中的两个设置有由一对大致相对的盘表面限定的跟部圆盘切割元件，其通常连续地会聚以限定圆周跟部圆盘顶部。 具有脚跟盘元件的两个切割器中的一个还设置有内盘切割元件。
-
-
-
-
搜索结果
35 条记录 (耗时 0.035 秒)
