公开(公告)号：US07389833B2

公开(公告)日：2008-06-24

申请号：US11422625

申请日：2006-06-07

申请人： Thomas A. Walker ,  Richard K. Smith, Jr. ,  Stephen R. Means

发明人： Thomas A. Walker ,  Richard K. Smith, Jr. ,  Stephen R. Means

IPC分类号： E21B10/36

CPC分类号： E21B10/36 ,  E21B10/62 ,  E21B17/046

摘要： A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally driven by a lug and pocket structure and axially limited in travel by means of retaining members.

摘要翻译： 一种用于在地层中钻孔的多截面冲击钻头组件，主要与气动冲击装置一起使用。 钻头组件由容易拆卸的钻头构成，该钻头由凸耳和凹槽结构旋转驱动，并通过保持构件轴向限制行进。

公开(公告)号：US06668946B2

公开(公告)日：2003-12-30

申请号：US10055735

申请日：2002-01-22

申请人： James R. Rankin ,  Richard K. Smith, Jr. ,  Peter C. Rozendaal ,  Randy R. Runquist ,  Scott A. Rempe

发明人： James R. Rankin ,  Richard K. Smith, Jr. ,  Peter C. Rozendaal ,  Randy R. Runquist ,  Scott A. Rempe

IPC分类号： E21B708

CPC分类号： E21B7/28 ,  E21B7/046 ,  E21B10/26 ,  E21B47/024

摘要： A steerable reamer and method for use in horizontal directional drilling. The reamer includes a carrier frame rotatably coupled to a reaming body, a carrier frame housing slidably coupled to the carrier frame, and an hydraulic cylinder for tilting the carrier frame relative to the carrier frame housing. The reamer may also include sondes for monitoring the position and orientation of the reamer during operation or a laser guidance system for automatically steering the reamer along a pilot bore.

公开(公告)号：US06810974B2

公开(公告)日：2004-11-02

申请号：US10380893

申请日：2003-03-20

申请人： Leland H. Lyon ,  Richard K. Smith, Jr.

发明人： Leland H. Lyon ,  Richard K. Smith, Jr.

IPC分类号： E21B1036

CPC分类号： E21B17/076 ,  E21B10/36 ,  E21B10/62 ,  Y10T279/17102

摘要： A retainer device (10) is provided for retaining a drill bit (12) within a percussive drill assembly casing (2). The retainer device (10) includes a generally annular body (16) having a central axis and an inner circumferential shoulder portion (18) disposable within the casing (2) such that the body axis (17) is substantially collinear with a casing axis (2a). The shoulder (17) is deflectable between a first position (P1), where the shoulder (18) is contactable with the bit head (14) to retain the bit (12) within the retainer body (16), and a second position (P2). The second position (P2) is spaced radially outwardly from the first position such that the bit head (14) is displaceable through the body (16) in a direction along the casing axis (2a). Also, the retainer device (10) includes a spacer (24) that locates the retainer body (16) at a desired axial position within the casing (2) and a centralizer (26) that centers the body (16) about the casing axis (2a).

摘要翻译： 提供一种保持装置（10），用于将钻头（12）保持在冲击钻组件壳体（2）内。 保持装置（10）包括具有中心轴线的大体上环形的主体（16）和一个可在壳体（2）内部的内周肩部（18），使得主体轴线（17）基本上与套管轴线 2a）。 肩部（17）可在第一位置（P1）之间偏转，其中肩部（18）可与钻头头（14）接触以将钻头（12）保持在保持器主体（16）内，并且第二位置 P2）。 第二位置（P2）从第一位置径向向外隔开，使得钻头头沿着壳体轴线（2a）的方向可移动穿过主体（16）。 而且，保持装置（10）还包括间隔件（24），其将保持器主体（16）定位在壳体（2）内的期望的轴向位置，并且使主体（16）围绕壳体轴线 （2a）。

公开(公告)号：US06533052B2

公开(公告)日：2003-03-18

申请号：US09767106

申请日：2001-01-22

申请人： Steven W. Wentworth ,  Robert F. Crane ,  Mark D. Randa ,  Randy R. Runquist ,  Richard K. Smith, Jr.

发明人： Steven W. Wentworth ,  Robert F. Crane ,  Mark D. Randa ,  Randy R. Runquist ,  Richard K. Smith, Jr.

IPC分类号： E21B1000

CPC分类号： E21B10/43 ,  E21B7/064

摘要： A drill bit suited for impact-assisted directional boring in rock includes a bit body having a frontwardly facing, circular main cutting surface having a number of main cutting teeth disposed thereon. A gage cutter extends radially outwardly from the main cutting surface, which gage cutter mounts at least one frontwardly facing gage cutting tooth thereon suitable for cutting in a circle during straight boring and over an angle defined by less than a full rotation of the bit in order to steer the bit. A heel on an outer side surface of the bit body at a position opposite to and behind the gage tooth provides a reaction surface for the gage cutter. The bit body and gage cutter have a nearly circular side profile along a front portion thereof such that a maximum radial clearance between the side profile and a side wall of a hole being drilled is not greater than about 10 percent of the radius of a circle cut by the gage tooth.