公开(公告)号：WO2007133739A3

公开(公告)日：2008-01-24

申请号：PCT/US2007011543

申请日：2007-05-14

Applicant: BAKER HUGHES INC ,  CLARK LASTER I ,  THOMAS JOHN C ,  LUND JEFFREY B ,  MCCLAIN ERIC E

Inventor： CLARK LASTER I ,  THOMAS JOHN C ,  LUND JEFFREY B ,  MCCLAIN ERIC E

IPC: E21B10/26 ,  E21B10/43 ,  E21B17/14

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

Abstract: A reaming tool (10) includes a tubular body (12) having a nose portion (14) with a concave center. A plurality of blades (20) defining junk slots (24) therebetween extend axially behind the nose (14) and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades (20) carry a plurality of cutting elements (30) from the axially leading ends. Selected surfaces and edges of the bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose (14) is configured to ensure drill out from the centerline thereof toward the side wall (16) of the tubular body. A method of drilling out a reaming tool is also disclosed.

Abstract translation: 扩孔工具（10）包括具有凹入中心的鼻部（14）的管状体（12）。 多个叶片（20）在其间限定了弹性槽（24），其在鼻部（14）之后轴向延伸并且从管状体的外部向外渐缩。 叶片（20）的旋转前缘从轴向前端承载多个切割元件（30）。 承载碳化钨的选定表面和边缘，其可以包括破碎的碳化钨。 鼻部（14）的壳被构造成确保从其中心线向管状体的侧壁（16）钻出。 还公开了一种钻出铰孔工具的方法。

公开(公告)号：WO2007133739A2

公开(公告)日：2007-11-22

申请号：PCT/US2007/011543

申请日：2007-05-14

Applicant: BAKER HUGHES INCORPORATED ,  CLARK, Laster, I. ,  THOMAS, John, C. ,  LUND, Jeffrey, B. ,  MCCLAIN, Eric, E.

Inventor： CLARK, Laster, I. ,  THOMAS, John, C. ,  LUND, Jeffrey, B. ,  MCCLAIN, Eric, E.

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 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。 承载碳化钨的选定表面和边缘，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。