公开(公告)号：US07712549B2

公开(公告)日：2010-05-11

申请号：US10988722

申请日：2004-11-15

申请人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski

发明人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski

IPC分类号： E21B10/26

CPC分类号： E21B10/26 ,  E21B4/16

摘要： A drilling tool (10) includes a pilot bit (14) and a plurality of mills (16) encircling the pilot bit. The pilot bit and the plurality of mills are each driven by a separate, hydraulically powered turbine or positive displacement motor. (20) The drilling tool does not include a transmission for transmitting power from the turbine or motor to any of the plurality of mills or the pilot bit.

摘要翻译： 钻具（10）包括导向钻头（14）和围绕导向钻头的多个铣刀（16）。 导向钻头和多个轧机各自由单独的液压动力涡轮机或正位移马达驱动。 （20）钻井工具不包括用于将动力从涡轮机或马达传送到多个轧机或导向钻头中的任何一个的传动装置。

公开(公告)号：US6004505A

公开(公告)日：1999-12-21

申请号：US687870

申请日：1996-07-26

申请人： Rustum Roy ,  Dinesh Agrawal ,  Jiping Cheng ,  Mahlon Dennis ,  Paul D. Gigil

发明人： Rustum Roy ,  Dinesh Agrawal ,  Jiping Cheng ,  Mahlon Dennis ,  Paul D. Gigil

IPC分类号： B22F3/105 ,  B22F7/06 ,  C22C1/05 ,  C23C30/00 ,  F27B9/14 ,  F27B9/38 ,  F27B21/00 ,  F27D1/16 ,  F27D3/04 ,  F27D99/00 ,  H05B6/78 ,  B22F3/10

CPC分类号： F27D99/0006 ,  B22F3/105 ,  B22F7/06 ,  C22C1/051 ,  C23C30/005 ,  F27B21/00 ,  F27D1/16 ,  H05B6/80 ,  B22F2003/1054 ,  B22F2005/001 ,  B22F2999/00 ,  F27B2009/386 ,  F27B9/142 ,  F27D2099/0028 ,  F27D3/04

摘要： The present disclosure is directed to a method of converting green particles to form finished particles. The apparatus used for sintering incorporates an elongate hollow tube, an insulative sleeve there about to define an elevated temperature zone, and a microwave generator coupled through a wave guide into a microwave cavity incorporated the tube. The particles are moved through the tube at a controlled rate to assure adequate exposure to the microwave radiation. Another form sintered a solid part in a cavity or mold.

公开(公告)号：US4632196A

公开(公告)日：1986-12-30

申请号：US614232

申请日：1984-05-25

申请人： Mahlon Dennis

发明人： Mahlon Dennis

IPC分类号： E21B10/56 ,  E21B10/573 ,  E21B10/60 ,  E21B10/62 ,  E21B10/12

CPC分类号： E21B10/573 ,  E21B10/60 ,  E21B10/62

摘要： A drill bit for connection on a drill string has a hollow tubular body with an end cutting face and an exterior peripheral stabilizer surface with cylindrical sintered carbide inserts positioned in recesses therein having polycrystalline diamond cutting elements mounted on said inserts. The inserts each also have a metal reinforcing shroud secured on the supporting face providing a reinforcement for the polycrystalline diamond cutting elements which is not subject to notch fracture. Each shroud is arranged so that a wall of the associated recess reinforces the shroud against shear forces and reinforces the stud against fracture.

摘要翻译： 用于在钻柱上连接的钻头具有中空管状体，其具有端部切割面和外部周边稳定器表面，其中圆柱形烧结碳化物刀片定位在其中的凹槽中，其中安装有所述刀片上的多晶金刚石切割元件。 插入件还具有固定在支撑面上的金属加强罩，为不会发生切口断裂的多晶金刚石切割元件提供加强件。 每个护罩被布置成使得相关联的凹部的壁加强了护罩以抵抗剪切力，并且加强了支柱以防止断裂。

公开(公告)号：US20060102388A1

公开(公告)日：2006-05-18

申请号：US10988722

申请日：2004-11-15

申请人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski

发明人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski

IPC分类号： E21B7/00

CPC分类号： E21B10/26 ,  E21B4/16

摘要： A drilling tool (10) includes a pilot bit (14) and a plurality of mills (16) encircling the pilot bit. The pilot bit and the plurality of mills are each driven by a separate, hydraulically powered turbine or positive displacement motor. (20) The drilling tool does not include a transmission for transmitting power from the turbine or motor to any of the plurality of mills or the pilot bit.

摘要翻译： 钻具（10）包括导向钻头（14）和围绕导向钻头的多个铣刀（16）。 导向钻头和多个轧机各自由单独的液压动力涡轮机或正位移马达驱动。 （20）钻井工具不包括用于将动力从涡轮机或马达传送到多个轧机或导向钻头中的任何一个的传动装置。

公开(公告)号：US5498081A

公开(公告)日：1996-03-12

申请号：US168949

申请日：1993-12-17

申请人： Mahlon Dennis ,  Thomas M. Dennis

发明人： Mahlon Dennis ,  Thomas M. Dennis

IPC分类号： E21B4/00 ,  F16C17/04 ,  F16C33/04 ,  E21B10/22

CPC分类号： F16C33/26 ,  E21B4/003 ,  F16C17/04 ,  F16C33/043 ,  F16C2206/04 ,  F16C2352/00

摘要： A mud motor bearing assembly is defined by and constructed with a support or base ring having an exposed upper or planar face. On the planar face, a number of PCD disc are attached to define a bearing surface at a common plane. The improved bearing assembly further includes a separate ring or an integral lip serving as a deflector ring brazed to the face of the support ring. The brazed deflector ring alters the fluid flow patterns of drilling fluid in the bearing assembly to reduce support ring erosion.

摘要翻译： 泥马达轴承组件由具有暴露的上表面或平面的支撑或基环限定和构造。 在平面上，连接多个PCD盘以在公共平面上限定支承表面。 改进的轴承组件还包括用作钎焊到支撑环的表面的偏转环的单独的环或整体的唇缘。 钎焊的偏转环改变了轴承组件中钻井液的流体流动模式，以减少支撑环侵蚀。

公开(公告)号：US20060237234A1

公开(公告)日：2006-10-26

申请号：US11114926

申请日：2005-04-25

申请人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski ,  Roy Powell

发明人： Mahlon Dennis ,  Thomas Dennis ,  Eric Twardowski ,  Roy Powell

IPC分类号： E21B10/36 ,  E21B4/00 ,  E21B10/26

CPC分类号： E21B7/28 ,  E21B4/02 ,  E21B4/16 ,  E21B10/26

摘要： An earth boring tool includes two coaxially-aligned, positive displacement motors. One motor turns a pilot bit and the other turns a reamer concentric with the pilot bit. The central bit bores the center of the hole and the reamer enlarges it. The central bit is rotated relatively faster, while rotation of the larger diameter reamer is relatively slow. The tool can thus be used to bore larger diameter holes without slowing drilling rates or adversely affecting performance of the cutter elements due to higher tangential velocities.

摘要翻译： 地面钻孔工具包括两个同轴对准的容积式电动机。 一个电机转动一个导向位，另一个电机转动一个与引导位置同心的扩孔器。 中心位钻孔的中心，扩孔器扩大。 中心钻头相对更快地旋转，而较大直径的铰刀的旋转相对较慢。 因此，由于较高的切向速度，该工具可用于钻孔较大直径的孔而不会降低钻孔速率或不利地影响刀具元件的性能。

公开(公告)号：US5647449A

公开(公告)日：1997-07-15

申请号：US592217

申请日：1996-01-26

申请人： Mahlon Dennis

发明人： Mahlon Dennis

IPC分类号： E21B10/56 ,  E21B10/573

CPC分类号： E21B10/5735

摘要： The present disclosure is directed to a crowned insert. The insert is elongate, right cylinder, two ended body of carbide, preferably bonded tungsten carbide particles. The near end is sized to fit in a hole in a drill bit while the remote end is provided with an enlargement. The enlargement in one embodiment is provided with a circular profile, and has an edge which is chamfered with a radius of curvature to avoid sharp edges. The end of the insert is crowned with a PDC layer integrally cast and bonded thereto so that the enlargement is fully surrounded by the PDC crown.

摘要翻译： 本发明涉及一种加冠刀片。 插入件是细长的，右圆柱体，两端的碳化物，优选结合的碳化钨颗粒。 近端的尺寸适于装配在钻头的孔中，而远端设置有放大。 在一个实施例中的放大镜设置有圆形轮廓，并且具有以曲率半径倒角的边缘，以避免尖锐边缘。 插入件的端部被一体地铸造并结合到其上的PDC层顶上，使得放大部分被PDC冠部完全包围。

公开(公告)号：USRE32036E

公开(公告)日：1985-11-26

申请号：US595269

申请日：1984-03-30

申请人： Mahlon Dennis

发明人： Mahlon Dennis

IPC分类号： E21B10/56 ,  E21B10/567 ,  E21B10/60 ,  E21B10/61 ,  E21B10/62

CPC分类号： E21B10/567 ,  E21B10/60 ,  E21B10/61 ,  E21B10/62

摘要： A new and improved drill bit for connection on a drill string has a hollow tubular body with an end cutting face and an exterior peripheral stabilizer surface with cylindrical sintered carbide inserts positioned therein. Nozzle passages extend from the interior of the bit body through the cutting face, preferably at an angle of about 10.degree.-25.degree. relative to the longitudinal axis of the body, and consist of a passage in the bit body and a removable and interchangeable nozzle member. The nozzle member is secured in place either by peripheral grooves and snap rings or aligned smaller passages in the nozzle member and the bit body having a retaining pin positioned therein. The cutting face preferably has a plurality of recesses therein which receive, by an interference fit, a plurality of cutting elements of the type known as STRATAPAX, consisting of a cylindrical stud having an angular supporting surface with a cutting disc bonded thereon consisting of sintered carbide having a cutting surface of polycrystalline diamond. The studs of the cutting element may have a groove along one side which aligns with a small recess along the side of the cutting element recess to receive a metal pin operable to secure the cutting element in place and against twisting. Additionally, an offset counterbore may be provided at the top of the cutting element recesses which provide for stress relief of the cutting elements during cutting operation.

公开(公告)号：US4323130A

公开(公告)日：1982-04-06

申请号：US158389

申请日：1980-06-11

申请人： Mahlon Dennis

发明人： Mahlon Dennis

IPC分类号： E21B10/56 ,  E21B10/567 ,  E21B10/60 ,  E21B10/61 ,  E21B10/62 ,  E21B9/02

CPC分类号： E21B10/567 ,  E21B10/60 ,  E21B10/61 ,  E21B10/62 ,  Y10T407/14

摘要： A new and improved drill bit for connection on a drill string has a hollow tubular body with an end cutting face and an exterior peripheral stabilizer surface with cylindrical sintered carbide inserts positioned therein. Nozzle passages extend from the interior of the bit body through the cutting face, preferably at an angle of about 10.degree.-25.degree. relative to the longitudinal axis of the body, and consist of a passage in the bit body and a removable and interchangeable nozzle member. The nozzle member is secured in place either by peripheral grooves and snap rings or aligned smaller passages in the nozzle member and the bit body having a retaining pin positioned therein. The cutting face preferably has a plurality of recesses therein which receive, by an interference fit, a plurality of cutting elements of the type known as STRATAPAX, consisting of a cylindrical stud having an angular supporting surface with a cutting disc bonded thereon consisting of sintered carbide having a cutting surface of polycrystalline diamond. The studs of the cutting element may have a groove along one side which aligns with a small recess along the side of the cutting element recess to receive a metal pin operable to secure the cutting element in place and against twisting. Additionally, an offset counterbore may be provided at the top of the cutting element recesses which provide for stress relief of the cutting elements during cutting operation.

摘要翻译： 用于钻柱上的连接的新的和改进的钻头具有中空管状体，其具有端部切割面和外部周边稳定器表面，其中定位有圆柱形烧结碳化物刀片。 喷嘴通道从钻头体的内部穿过切割面延伸，优选地相对于主体的纵向轴线以大约10°-25°的角度延伸，并且由钻头体中的通道和可拆卸和可互换的喷嘴 会员。 喷嘴构件通过周边槽和卡环或者在喷嘴构件中对齐的较小通道固定就位，并且具有定位在其中的保持销的钻头体。 切割面优选地具有多个凹槽，其中通过过盈配合接收多个称为STRATAPAX的切割元件，该切割元件由具有角度支撑表面的圆柱形柱体组成，其中连接有切割盘，由烧结碳化物 具有多晶金刚石的切割表面。 切割元件的螺柱可以具有沿着一侧的凹槽，其与沿着切割元件凹部的侧面的小凹部对准以接收可操作以将切割元件固定在适当位置并且防止扭曲的金属销。 此外，可以在切割元件凹部的顶部设置偏移沉孔，其在切割操作期间提供切割元件的应力释放。