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公开(公告)号：US20050189148A1
公开(公告)日：2005-09-01
申请号：US10788258
申请日：2004-02-26
申请人： James Larsen , Dwayne Terracina , Jeffrey Leisey
发明人： James Larsen , Dwayne Terracina , Jeffrey Leisey
CPC分类号： E21B10/18 , E21B10/60 , E21B41/0078
摘要： The present invention relates to a roller cone drill bit that has improved flow characteristics. The roller cone drill bit includes forming at least one relief region inside a bit body of the roller cone drill bit on a ledge formed between a fluid plenum and at least one of the fluid orifices. A method of locating the at least one relief region is also disclosed.
摘要翻译： 本发明涉及一种具有改善的流动特性的滚子锥钻头。 辊锥钻头包括在形成在流体室和至少一个流体孔之间的凸缘上形成辊锥钻头的钻头体内的至少一个浮雕区域。 还公开了一种定位至少一个释放区域的方法。
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公开(公告)号：US20070143086A1
公开(公告)日：2007-06-21
申请号：US11313290
申请日：2005-12-20
IPC分类号： G06G7/48
CPC分类号： E21B10/60
摘要： A method of manufacturing an earth-boring bit having a fluid plenum and a plurality of fluid pathways includes modeling flow characteristics of the fluid plenum and the plurality of fluid pathways, optimizing the flow characteristics to minimize fluid separation through each fluid pathway, constructing a plenum blank from the optimized model, and sintering matrix power between the plenum blank and a bit head mold to create the fluid plenum and plurality of fluid pathways.
摘要翻译： 制造具有流体通风室和多个流体通路的钻孔钻头的方法包括建模流体通风室和多个流体路径的流动特性，优化流动特性以使通过每个流体通道的流体分离最小化，构建增压室 优化模型中的空白，以及增压空白和位头模具之间的烧结矩阵功率，以产生流体增压室和多个流体通路。
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公开(公告)号：US20050217899A1
公开(公告)日：2005-10-06
申请号：US10816542
申请日：2004-04-01
申请人： Syed Hossain , James Larsen , Dwayne Terracina , Quan Nguyen
发明人： Syed Hossain , James Larsen , Dwayne Terracina , Quan Nguyen
摘要： A drill bit configures hydraulic streams from the bit nozzles for the particular cutting structure to be cleaned based on the cutting structure location and geometry. The projected impingement location for each hydraulic stream projected fluid path is customized for a corresponding roller cone, with each nozzle or nozzle receptacle being individually positioned according to improve cone cleaning. At least two nozzles or nozzle receptacles should differ on the drill bit.
摘要翻译： 基于切割结构位置和几何形状，钻头针对待清洁的特定切割结构从钻头喷嘴构造液压流。 每个液压流投影流体路径的预计冲击位置是针对相应的滚子锥定制的，每个喷嘴或喷嘴容器根据改进的锥体清洁单独定位。 钻头上至少有两个喷嘴或喷嘴容器应有所不同。
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公开(公告)号：US20060076163A1
公开(公告)日：2006-04-13
申请号：US11248397
申请日：2005-10-12
申请人： Dwayne Terracina , Lijun Song , James Larsen
发明人： Dwayne Terracina , Lijun Song , James Larsen
IPC分类号： E21B10/60
CPC分类号： E21B10/602 , E21B10/60
摘要： A method for designing a drill bit comprising modeling a domain between a drill bit and a surrounding wellbore. A region is defined within each of a plurality of flow paths through which fluid travels through the domain. An allocation of flow among the plurality of flow paths through the domain is determined and the drill bit is modified such that the allocation of flow is substantially uniform among the plurality of flow paths. A drill bit comprises a bit body having a plurality of blades projecting there from, wherein at least one blade has a greater length than at least one other blade. A plurality of nozzles, or ports, are disposed on the body and a plurality of junk slots are formed between adjacent blades so that the flow of fluid through each of the plurality of junk slots is substantially uniform.
摘要翻译： 一种用于设计钻头的方法，包括对钻头和周围井筒之间的区域进行建模。 在多个流动路径的每一个内限定区域，流体通过该流动通过该区域。 确定通过该域的多个流动路径中的流量分配，并且修改钻头，使得在多个流动路径中流动的分配基本上是均匀的。 钻头包括具有从其突出的多个叶片的钻头体，其中至少一个刀片具有比至少一个其它刀片更大的长度。 多个喷嘴或端口设置在主体上，并且在相邻叶片之间形成多个垃圾槽，使得流过多个垃圾槽中的每一个的流体流基本均匀。
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公开(公告)号：US20060054355A1
公开(公告)日：2006-03-16
申请号：US11215310
申请日：2005-08-30
申请人： James Larsen , Dwayne Terracina
发明人： James Larsen , Dwayne Terracina
IPC分类号： E21B10/18
CPC分类号： E21B10/18 , E21B10/60 , E21B41/0078
摘要： An earth boring bit includes a bit body including plurality of PDC cutter elements and a fluid plenum connecting a fluid inlet to at least one fluid orifice. Furthermore, a ledge formed between a bottom of the fluid plenum and the at least one fluid orifice includes a relief region formed therein located across a flow change angle. Additionally, a method to improve a polycrystalline diamond compact drill bit body design includes determining flow change angles from a fluid plenum into a fluid orifice and modeling a relief region on a ledge to optimize fluid into the fluid orifice.
摘要翻译： 地镗头包括一个包括多个PDC切割元件的钻头体和将流体入口连接到至少一个流体孔的流体增压室。 此外，形成在流体通风室的底部和至少一个流体孔口之间的凸缘包括形成在其中的跨越流变角的浮雕区域。 另外，改进多晶金刚石致密钻头体设计的方法包括确定从流体压力室到流体孔口的流动变化角度，并对凸缘上的浮雕区域进行建模以优化流体进入流体孔口。
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公开(公告)号：US20050121235A1
公开(公告)日：2005-06-09
申请号：US10728650
申请日：2003-12-05
申请人： James Larsen , Dwayne Terracina , Syed Hossain
发明人： James Larsen , Dwayne Terracina , Syed Hossain
CPC分类号： E21B10/18
摘要： A rotary cone rock bit includes one or more hole cleaning nozzles and one or more bit cleaning nozzles. The hole cleaning nozzles of one drill bit define a projected fluid path disposed at a lateral angle of less than six degrees in order to achieve a large impingement pressure on the hole bottom. The bit cleaning nozzles of the same drill bit define a projected fluid path disposed at a lateral angle of at least six degrees in order to pass within 0.5 inches of the teeth on leading edge of the lagging roller cone. This results in a drill bit that both cleans the bottom hole and cleans cone inserts.
摘要翻译： 旋转锥形钻头包括一个或多个孔清洁喷嘴和一个或多个钻头清洁喷嘴。 一个钻头的孔清洁喷嘴限定以小于六度的横向角度设置的投影流体路径，以便在孔底部上实现大的冲击压力。 相同钻头的钻头清洁喷嘴限定了以至少六度的横向角度设置的投影流体路径，以便在滞后辊锥体的前缘上的齿的0.5英寸内通过。 这产生了一个钻头，既净化了底孔，又清洗了锥形刀片。
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公开(公告)号：US20110284233A1
公开(公告)日：2011-11-24
申请号：US13112326
申请日：2011-05-20
申请人： Jian Wu , Jianbing Hu , Tommy G. Ray , Dwayne Terracina
发明人： Jian Wu , Jianbing Hu , Tommy G. Ray , Dwayne Terracina
CPC分类号： E21B34/06 , E21B7/28 , E21B10/32 , E21B23/006
摘要： A downhole tool assembly is configured for repeated and selective hydraulic actuation and deactuation. A piston assembly is configured to reciprocate axially in a downhole tool body. The piston assembly reciprocates between a first axial position and second and third axial positions that axially oppose the first position. The downhole tool is actuated when the piston assembly is in the third axial position and deactuated when the piston assembly is in either of the first or second axial positions. A spring member biases the piston assembly towards the first axial position while drilling fluid pressure in the tool body urges the piston assembly towards the second and third axial positions. Downhole tool actuation and deactuation may be controlled from the surface, for example, via cycling the drilling fluid flow rate.
摘要翻译： 井下工具组件被配置为用于重复和选择性的液压致动和停用。 活塞组件构造成在井下工具体中轴向往复运动。 活塞组件在轴向相对于第一位置的第一轴向位置和第二和第三轴向位置之间往复运动。 当活塞组件处于第三轴向位置时，井下工具被致动，并且当活塞组件处于第一或第二轴向位置时，井下工具被致动。 弹簧构件朝向第一轴向位置偏压活塞组件，同时在工具体内钻出流体压力，迫使活塞组件朝向第二和第三轴向位置。 例如，可以通过循环钻井液的流速从表面控制井下工具致动和停用。
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公开(公告)号：US20110000714A1
公开(公告)日：2011-01-06
申请号：US12828887
申请日：2010-07-01
申请人： Bala Durairajan , Dwayne Terracina
发明人： Bala Durairajan , Dwayne Terracina
IPC分类号： E21B7/00 , E21B10/627
摘要： A drill bit for drilling a borehole in an earthen formation. In an embodiment, the bit comprises a first blade having a cutter-supporting surface. In addition, the bit comprises a plurality of primary cutter elements with cutting faces mounted to the cutter-supporting surface. The cutting profiles of the cutting faces define an outermost cutting profile P0 in rotated profile view. Further, the bit comprises a stabilizing member having an end distal the cutter-supporting surface. The end includes a tip. The tip is offset from the outermost cutting profile P0 in rotated profile view.
摘要翻译： 用于在土层中钻孔的钻头。 在一个实施例中，钻头包括具有切割器支撑表面的第一刀片。 此外，该钻头包括多个主切割器元件，其切割面安装在刀具支撑表面上。 切割面的切割轮廓在旋转轮廓视图中限定最外切割轮廓P0。 此外，该钻头包括稳定件，其具有远离切割器支撑表面的一端。 最后包括一个提示。 尖头在旋转轮廓视图中偏离最外切割轮廓P0。
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