| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | COMPLIANTLY COUPLED CUTTING/GAUGE PAD SYSTEM | EP08788334.4 | 2008-08-14 | EP2176501A1 | 2010-04-21 | JOHNSON, Ashley; DOWNTON, Geoffrey; COOK, John |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be movably coupled with chassis. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis. | ||||||
| 42 | Milling apparatus with replaceable blades | EP90304878.3 | 1990-05-04 | EP0397417A1 | 1990-11-14 | Desai, Praful C. |
A pipe milling apparatus for milling away tubular casing encased within well bores has a tubular body (12) having at least two equi-circumferentially spaced longitudinal slots (14) formed through the circumferential wall of the body and a milling blade (40) radially extends through each slot, each milling blade having a longitudinally extending flange portion (42, 46, 47) inside the tubular body, the flange portion including a tab (46) for holding the blade within the tubular body. A radially inner surface (48) of each blade has a tapered surface for cooperating with a cylinderical mandrel (20) that is inserted into the tubular body, the mandrel having a taper corresponding to the taper on the blade such that the corresponding tapers frictionally abrade one another to wedge the blades radially outwardly of the tubular body. In a further embodiment of the invention two tapered rings are provided each having tapers for locating respective ends of a blade so that movement of the rings toward one another causes the blade to be moved radially outwardly. In such a further embodiment one of the rings is arranged to be flexible and the rings are biased toward one another by a compression spring. |
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| 43 | 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드 | KR2020060022386 | 2006-08-21 | KR200434215Y1 | 2006-12-18 | 박기운; 김종국; 강호성 |
| 본 고안에 따른 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드(10)는, 복수 개의 체결공(21)을 구비한 둘레부(22)를 외주 면에 포함하는 원통 형상의 본체(20); 상기 본체(20)의 측부에서 일정 각도 간격으로 상하 다른 높이를 가지도록 복수 쌍으로 구성되되, 이 중 각각의 1쌍은 서로 180도의 각으로 수평 방향의 대향 측면에 형성되어 있는 홀(31,32); 양 측단에 패스너 체결공(44)을 각각 구비하고, 상기 1쌍의 홀(31,32)을 따라 수평 방향으로 슬라이딩 결합되는 복수 개의 커터 스포크(41,42); 상기 커터 스포크(41,42)의 상면에 형성된 다수의 커터(50);로 구성이 되어, 상기 본체(20)의 홀(31,32)과 상기 커터 스포크(41,42)의 패스너 체결공(44)을 통해 패스너(60)를 체결 및 해제함으로, 상기 커터 스포크(41,42)가 상기 본체(20)에서 탈부착 가능하게 결합되는 것을 특징으로 한다. 본 고안에 따른 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드에 따르면, 일일이 각 커터를 커터 스포크에서 교체하는 불편함 없이 굴착용도에 따라 적합하게 사용되는 커터가 복수 개 형성된 커터 스포크 자체를 교체할 수가 있어, 굴착 공정이 보다 신속하고 편리해지는 장점이 있다. | ||||||
| 44 | 굴착용 함마 | KR1020050114000 | 2005-11-28 | KR1020050118654A | 2005-12-19 | 장병철 |
| 본 발명은 지반의 굴착 또는 시추(試錐, boring)에 사용되는 함마에 관한 것으로서, 보다 구체적으로는 상단이 상기 함마 하단에 결합 고정된 상부비트; 상기 상부비트에 회전 가능하도록 축 결합되면서 지반과 직접 접촉하여 굴착이 이루어지는 하부비트; 및 상기 상/하부비트 사이에 축 결합되어 함마의 회전에 따라 외측으로 펼쳐지거나 내측으로 접혀지는 측부비트; 가 구성되어 이루어진다. 따라서 상기 함마의 정회전시 측부비트가 강관 외측으로 펼쳐지면서 원활한 굴착이 이루어지고, 함마의 역회전시 측부비트가 강관 내측으로 접혀지면서 함마의 교체를 위한 강관으로부터의 분리가 용이하게 이루어지도록 한 굴착용 함마를 제공하게 된다. | ||||||
| 45 | 분리형 천공비트 | KR2020040029105 | 2004-10-14 | KR200371825Y1 | 2005-01-10 | 한광수 |
| 본 고안은, 천공장치의 로드 단부에 장착되어 지반 또는 암반을 굴착하기 위한 천공비트로, 상기 로드의 회전에 의해 지반 또는 암반을 천공하는 파일럿 비트와; 상기 파일럿 비트와 탈착 가능하도록 결합되는 아웃케이싱 비트와; 천공작업과 동시에 천공홀에 케이싱을 삽입하기 위한 케이싱 슈;를 포함하여 구성되어, 다양한 구경의 홀을 천공할 수 있으며, 그와 동시에 공사원가를 절감시킬 수 있는 분리형 천공비트를 제공한다. | ||||||
| 46 | Method of using spring loaded blocker to retain rolling cutters or mechanical lock cutters | US14081593 | 2013-11-15 | US09869133B2 | 2018-01-16 | Chen Chen; Yuri Burhan; Jibin Shi |
| A cutting element assembly may include a sleeve; an inner cutting element in the sleeve; and a blocker retained in the sleeve with at least one locking device and covering a portion of a cutting face of the inner cutting element. Cutting tools may include a tool body; a plurality of blades extending radially from the tool body, each blade comprising a leading face and a trailing face; a plurality of cutter pockets on the plurality of blades; at least one cutting element in one of the cutter pockets; and at least one blocker positioned adjacent to a cutting face of the at least one cutting element and the leading face of the blade, the blocker being retained to the cutter pocket with at least one locking device. | ||||||
| 47 | FORMATION-ENGAGING ASSEMBLIES, EARTH-BORING TOOLS INCLUDING SUCH ASSEMBLIES, AND ASSOCIATED METHODS | US15293955 | 2016-10-14 | US20170030145A1 | 2017-02-02 | Juan Miguel Bilen; Steven Craig Russell |
| A formation-engaging assembly includes a formation-engaging structure holder with a side surface between a proximal end and a distal end, a receptacle in the distal end, and a lateral protrusion extending from a portion of the side surface of the formation-engaging structure holder adjacent the distal end. A formation-engaging structure may include a formation-engaging surface at a distal end, a proximal end and a sidewall therebetween. The proximal end and at least a portion of the sidewall of the formation-engaging structure may be received within the receptacle of the formation-engaging structure holder. Earth-boring tools may include such formation-engaging assemblies. | ||||||
| 48 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | US13370862 | 2012-02-10 | US09404312B2 | 2016-08-02 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle, and at least one of the at least two conical cutting elements has a negative back rake angle. | ||||||
| 49 | Kerfing hybrid drill bit and other downhole cutting tools | US13370734 | 2012-02-10 | US09366090B2 | 2016-06-14 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A drill bit for drilling a borehole in earth formations may include a bit body having a bit axis and a bit face; a plurality of blades extending radially along the bit face; and a plurality of cutting elements disposed on the plurality of blades. The plurality of cutting elements may include: at least one cutter including a substrate and a diamond table having a substantially planar cutting face; and at least two conical cutting elements including a substrate and a diamond layer having a conical cutting end. In a rotated view of the plurality of cutting elements into a single plane, the at least one cutter may be located a radial position from the bit axis that is intermediate the radial positions of the at least two conical cutting elements. | ||||||
| 50 | FORMATION-ENGAGING ASSEMBLIES, EARTH-BORING TOOLS INCLUDING SUCH ASSEMBLIES, AND RELATED METHODS | US14272369 | 2014-05-07 | US20150322726A1 | 2015-11-12 | Juan Miguel Bilen; Steven C. Russell |
| A formation-engaging assembly includes a formation-engaging structure holder with a side surface between a proximal end and a distal end, a receptacle in the distal end, and a lateral protrusion extending from a portion of the side surface of the formation-engaging structure holder adjacent the distal end. A formation-engaging structure may include a formation-engaging surface at a distal end, a proximal end and a sidewall therebetween. The proximal end and at least a portion of the sidewall of the formation-engaging structure may be received within the receptacle of the formation-engaging structure holder. Earth-boring tools may include such formation-engaging assemblies. | ||||||
| 51 | Rolling cutter placement on PDC bits | US13303837 | 2011-11-23 | US09016409B2 | 2015-04-28 | Youhe Zhang; Michael G. Azar |
| A cutting tool cutting tool may include a tool body having a plurality of blades extending radially therefrom; and a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a nose and/or shoulder region of the cutting tool at a side rake angle ranging from about 10 to about 30 degrees or −10 to about −30 degrees. | ||||||
| 52 | Drill bit having rotational cutting elements and method of drilling | US14286550 | 2014-05-23 | US08973684B1 | 2015-03-10 | Craig H. Cooley; Jeffrey B. Lund; Jair J. Gonzalez |
| A rotary drill bit is disclosed. The rotary drill bit may include a bit body, a cutting pocket defined in the bit body, and a cutting element rotatably coupled to the bit body. The cutting element may be positioned at least partially within the cutting pocket. The rotary drill bit may also include a rotation-inducing member adjacent to the cutting element for inducing rotation of the cutting element relative to the cutting pocket. The rotation-inducing member may include a resilient member or a vibrational member. The rotary drill bit may also include protrusions extending from an interior of the cutting pocket adjacent to an outer diameter of the cutting element. A method of drilling a formation is also disclosed. | ||||||
| 53 | DRILLING SYSTEMS AND MULTI-FACED DRILL BIT ASSEMBLIES | US14458351 | 2014-08-13 | US20150047905A1 | 2015-02-19 | Kevin W. Clark; Chinedu I. Nduka |
| A drill bit assembly that includes a shank including a shank axis, first and second ends, a drill bit seat at the second end and a central flow bore extending axially from the first end. Additionally, the assembly includes a sleeve disposed about and translatable axially relative to the shank and a drill bit rotatably coupled to the sleeve. The drill bit includes a first bit face having a first cutting structure configured to engage an earthen formation, and a second bit face having a second cutting structure configured to engage the earthen formation. The drill bit is configured to rotate about the about the shank axis in a cutting direction, and to rotate about an axis of rotation being orthogonal to the shank axis to selectively expose the first or second cutting surface to the earthen formation. The seat is configured to receive the first or second bit face. | ||||||
| 54 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | US13826193 | 2013-03-14 | US08887837B2 | 2014-11-18 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two non-planar cutting elements comprising a substrate and a diamond layer having a non-planar cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle or positive side rake angle, and at least one of the at least two non-planar cutting elements has a negative back rake angle or a negative side rake angle. | ||||||
| 55 | CUTTING STRUCTURES FOR FIXED CUTTER DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS | US13370862 | 2012-02-10 | US20120234610A1 | 2012-09-20 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle, and at least one of the at least two conical cutting elements has a negative back rake angle. | ||||||
| 56 | EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH | US13333749 | 2011-12-21 | US20120160562A1 | 2012-06-28 | Sharp Ugwuocha; Steven Rae |
| An earth removal member with features for facilitating drill-through is provided for drilling with casing or liner applications. In one embodiment, the casing bit includes a tubular body; a nose attached to one end of the tubular body, wherein the nose includes a blade support and comprises a drillable material; a blade attached to the blade support using mating profiles; cutters disposed along the blade; and a nozzle disposed in the nose. | ||||||
| 57 | ROLLING CUTTER PLACEMENT ON PDC BITS | US13303837 | 2011-11-23 | US20120132471A1 | 2012-05-31 | Youhe Zhang; Michael Azar |
| A cutting tool cutting tool may include a tool body having a plurality of blades extending radially therefrom; and a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a nose and/or shoulder region of the cutting tool at a side rake angle ranging from about 10 to about 30 degrees or −10 to about −30 degrees | ||||||
| 58 | EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES AND RELATED METHODS | US13299914 | 2011-11-18 | US20120125695A1 | 2012-05-24 | Chaitanya K. Vempati; Timothy K. Marvel; Suresh G. Patel |
| Earth-boring tools comprise a body and one or more replaceable cutting structures attached to the body at a face region of the body. Each replaceable cutting structure comprises an attachment member and a cutting portion configured to engage an underlying earth formation. Methods of forming an earth-boring tool comprise attaching one or more cutting elements to a replaceable cutting structure; positioning the replaceable cutting structure proximate a region of a body of an earth-boring tool that is susceptible to at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the body. Methods of repairing an earth-boring tool comprise bringing a replaceable cutting structure proximate at least one portion of a body of an earth-boring tool exhibiting at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the earth-boring tool at the at least one portion. | ||||||
| 59 | Drill Bit With Adjustable Cutters | US12393889 | 2009-02-26 | US20100212964A1 | 2010-08-26 | Chad J. Beuershausen |
| A drill bit is provided that in one embodiment may include a blade profile having a cone section and one or more cutters on the cone section configured to retract from an extended position when an applied load on the drill bit reaches or exceeds a selected threshold. The drill bit is less aggressive when the cutters are in the retracted position compared to when the cutters are in the extended position. | ||||||
| 60 | COMPLIANTLY COUPLED GAUGE PAD SYSTEM WITH MOVABLE GAUGE PADS | US12191230 | 2008-08-13 | US20100038141A1 | 2010-02-18 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis. | ||||||
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