公开(公告)号：US08191654B2

公开(公告)日：2012-06-05

申请号：US13098976

申请日：2011-05-02

Applicant: Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

Inventor： Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

IPC: E21B7/04

CPC classification number: E21B10/56 ,  E21B10/43 ,  E21B10/567 ,  E21B17/14 ,  E21B29/00 ,  E21B29/06

Abstract: A drill bit includes a bit body having a face on which two different types of cutting elements are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being cutting elements suitable for drilling through a casing bit disposed at an end of a casing or liner string and cementing equipment or other components, if such are disposed within the casing or liner string, as well as cement inside as well as exterior to the casing or liner string. The second type of cutting elements exhibits a relatively greater exposure than the first type of cutting elements, so as to engage the interior of the casing bit and, if present, cementing equipment components and cement to drill therethrough, after which the second type of cutting elements quickly wears upon engagement with the subterranean formation material exterior to the casing bit, and the first type of cutting elements continues to drill the subterranean formation. The first type of cutting elements may comprise superabrasive cutting elements and the second type of cutting elements may comprise abrasive or superabrasive cutting elements comprising a plurality of configurations.

Abstract translation: 钻头包括具有面的两个不同类型的切割元件的钻头体，第一类型是适合于钻取至少一个地下地层的切割元件，第二类型是适于通过设置的套管钻头进行钻孔的切割元件 在套管或衬管柱的一端，以及固井设备或其他部件，如果这些部件设置在壳体或衬套柱内，以及水泥内部以及外壳或衬套柱的外部。 第二类型的切割元件比第一类型的切割元件具有相对更大的曝光，以便接合套筒钻头的内部，如果存在的话，将固井设备部件和水泥钻入其中，之后进行第二种切割 元件在与套管钻头外部的地层形成材料接合时快速磨损，并且第一类型的切削元件继续钻入地层。 第一类型的切割元件可以包括超级磨料切割元件，并且第二类型的切割元件可以包括包括多个构造的磨料或超级磨料切割元件。

公开(公告)号：US07954570B2

公开(公告)日：2011-06-07

申请号：US11524503

申请日：2006-09-20

Applicant: Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

Inventor： Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

IPC: E21B10/46

CPC classification number: E21B10/56 ,  E21B10/43 ,  E21B10/567 ,  E21B17/14 ,  E21B29/00 ,  E21B29/06

Abstract: A drill bit includes a bit body having a face on which two different types of cutting elements are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being cutting elements suitable for drilling through a casing bit disposed at an end of a casing or liner string and cementing equipment or other components, if such are disposed within the casing or liner string, as well as cement inside as well as exterior to the casing or liner string. The second type of cutting elements exhibits a relatively greater exposure than the first type of cutting elements, so as to engage the interior of the casing bit and, if present, cementing equipment components and cement to drill therethrough, after which the second type of cutting elements quickly wears upon engagement with the subterranean formation material exterior to the casing bit, and the first type of cutting elements continues to drill the subterranean formation. The first type of cutting elements may comprise superabrasive cutting elements and the second type of cutting elements may comprise abrasive or superabrasive cutting elements comprising a plurality of configurations.

Abstract translation: 钻头包括具有面的两个不同类型的切割元件的钻头体，第一类型是适合于钻取至少一个地下地层的切割元件，第二类型是适于通过设置的套管钻头进行钻孔的切割元件 在套管或衬管柱的一端，以及固井设备或其他部件，如果这些部件设置在壳体或衬套柱内，以及水泥内部以及外壳或衬套柱的外部。 第二类型的切割元件比第一类型的切割元件具有相对更大的曝光，以便接合套筒钻头的内部，如果存在的话，将固井设备部件和水泥钻入其中，之后进行第二种切割 元件在与套管钻头外部的地层形成材料接合时快速磨损，并且第一类型的切削元件继续钻入地层。 第一类型的切割元件可以包括超级磨料切割元件，并且第二类型的切割元件可以包括包括多个构造的磨料或超级磨料切割元件。

公开(公告)号：US07621351B2

公开(公告)日：2009-11-24

申请号：US11747651

申请日：2007-05-11

Applicant: Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

Inventor： Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

IPC: E21B7/28

CPC classification number: E21B10/26 ,  E21B7/20 ,  E21B10/43 ,  E21B17/14

Abstract: A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.

Abstract translation: 扩孔工具包括具有凹部中心的鼻部的管状体。 在其间限定垃圾槽的多个叶片在鼻部之间轴向延伸并且从管状体的外部向外逐渐变细。 叶片的旋转前缘从轴向前端承载多个切割元件。 叶片的选定表面和边缘承载碳化钨，其可以包括破碎的碳化钨。 鼻子的外壳被配置成确保从其中心线朝向管状体的侧壁排出。 还公开了一种钻出铰孔工具的方法。

公开(公告)号：US20110203850A1

公开(公告)日：2011-08-25

申请号：US13098976

申请日：2011-05-02

Applicant: Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

Inventor： Eric E. McClain ,  John C. Thomas ,  Sarvesh Tyagi ,  Jack T. Oldham ,  Lester I. Clark ,  William Heuser

IPC: E21B7/00

CPC classification number: E21B10/56 ,  E21B10/43 ,  E21B10/567 ,  E21B17/14 ,  E21B29/00 ,  E21B29/06

Abstract: A drill bit includes a bit body having a face on which two different types of cutting elements are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being cutting elements suitable for drilling through a casing bit disposed at an end of a casing or liner string and cementing equipment or other components, if such are disposed within the casing or liner string, as well as cement inside as well as exterior to the casing or liner string. The second type of cutting elements exhibits a relatively greater exposure than the first type of cutting elements, so as to engage the interior of the casing bit and, if present, cementing equipment components and cement to drill therethrough, after which the second type of cutting elements quickly wears upon engagement with the subterranean formation material exterior to the casing bit, and the first type of cutting elements continues to drill the subterranean formation. The first type of cutting elements may comprise superabrasive cutting elements and the second type of cutting elements may comprise abrasive or superabrasive cutting elements comprising a plurality of configurations.

Abstract translation: 钻头包括具有面的两个不同类型的切割元件的钻头体，第一类型是适合于钻取至少一个地下地层的切割元件，第二类型是适于通过设置的套管钻头进行钻孔的切割元件 在套管或衬管柱的一端，以及固井设备或其他部件，如果这些部件设置在壳体或衬套柱内，以及水泥内部以及外壳或衬套柱的外部。 第二类型的切割元件比第一类型的切割元件具有相对更大的曝光，以便接合套筒钻头的内部，如果存在的话，将固井设备部件和水泥钻入其中，之后进行第二种切割 元件在与套管钻头外部的地层形成材料接合时快速磨损，并且第一类型的切削元件继续钻入地层。 第一类型的切割元件可以包括超级磨料切割元件，并且第二类型的切割元件可以包括包括多个构造的磨料或超级磨料切割元件。

公开(公告)号：US07900703B2

公开(公告)日：2011-03-08

申请号：US12624311

申请日：2009-11-23

Applicant: Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

Inventor： Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

IPC: E21B29/00

CPC classification number: E21B10/26 ,  E21B7/20 ,  E21B10/43 ,  E21B17/14

Abstract: A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose portion and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.

Abstract translation: 扩孔工具包括具有凹部中心的鼻部的管状体。 多个叶片限定了其间的垃圾槽，其在鼻部之间轴向延伸并且从管状体的外部向外逐渐变细。 叶片的旋转前缘从轴向前端承载多个切割元件。 叶片的选定表面和边缘承载碳化钨，其可以包括破碎的碳化钨。 鼻子的外壳被配置成确保从其中心线朝向管状体的侧壁排出。 还公开了一种钻出铰孔工具的方法。

公开(公告)号：US20100065282A1

公开(公告)日：2010-03-18

申请号：US12624311

申请日：2009-11-23

Applicant: Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

Inventor： Lester I. Clark ,  John C. Thomas ,  Jeffrey B. Lund ,  Eric E. McClain

IPC: E21B29/00

CPC classification number: E21B10/26 ,  E21B7/20 ,  E21B10/43 ,  E21B17/14

Abstract: A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.

Abstract translation: 扩孔工具包括具有凹部中心的鼻部的管状体。 在其间限定垃圾槽的多个叶片在鼻部之间轴向延伸并且从管状体的外部向外逐渐变细。 叶片的旋转前缘从轴向前端承载多个切割元件。 叶片的选定表面和边缘承载碳化钨，其可以包括破碎的碳化钨。 鼻子的外壳被配置成确保从其中心线朝向管状体的侧壁排出。 还公开了一种钻出铰孔工具的方法。