公开(公告)号：US20120152623A1

公开(公告)日：2012-06-21

申请号：US12969054

申请日：2010-12-15

申请人： Shilin Chen

发明人： Shilin Chen

IPC分类号： E21B10/46 ,  G06F17/50

CPC分类号： G06F17/5009 ,  E21B10/43 ,  E21B10/55

摘要： Downhole drilling tools designed and manufactured to reduce bit axial force and torque and to enhance drilling efficiency comprising laying out some cutters in one spiral direction of rotation about a bit rotational axis and other cutters in an opposite spiral direction of rotation; evaluating forces acting on cutters during simulated engagement with a downhole formation (straight and transitional drilling); and modifying cutter layout with respect to a spiral direction of rotation. Some embodiments further comprise, prior to simulation, placing cutters in cutter groups/sets at respective locations to obtain a level of force balance. Multilevel force balanced downhole drilling tools may be designed using five respective simulations: cutter group level, neighbor cutter group level, cutter set level, group of N (N=3 or N=4) consecutive cutters level and all cutters level. Cutter layout procedures and algorithms to minimize respective bit forces and in some embodiments to obtain force balance are described.

摘要翻译： 设计和制造的井下钻孔工具以减少钻头的轴向力和扭矩并提高钻井效率，包括在相对螺旋旋转方向上围绕钻头旋转轴线旋转的一个螺旋旋转方向和其它切割器布置一些切割器; 在与井下地层（直接和过渡钻井）模拟接合期间评估作用在切割机上的力; 以及相对于螺旋旋转方向改变切割器布局。 一些实施例还包括在模拟之前将切割器在切割器组/组中的相应位置处放置以获得力平衡的水平。 多级力平衡井下钻井工具可以使用五个相应的模拟设计：刀具组水平，相邻刀具组等级，刀具级别，N（N = 3或N = 4）连续刀具级别和所有刀具级别。 描述了切割器布局过程和算法以使相应的位力最小化，并且在一些实施例中以获得力平衡。

公开(公告)号：US20120111637A1

公开(公告)日：2012-05-10

申请号：US13288649

申请日：2011-11-03

申请人： Shilin Chen ,  Riun Ashlie

发明人： Shilin Chen ,  Riun Ashlie

IPC分类号： E21B10/08

CPC分类号： E21B17/1092 ,  Y10T29/49

摘要： A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.

摘要翻译： 旋转钻头具有设置在其外部部分上的带有垫片的刀片，以在形成定向井筒期间提高旋转钻头的操纵性，而不牺牲横向稳定性。 量具焊盘中的一个或多个可以包括径向渐缩的外部部分和/或切除部分，以帮助减少相关联的量规焊盘的磨损。 对于一些应用，旋转钻头可以形成为具有具有相对均匀的外表面的量具垫的刀片。 硬面材料和/或按钮可以设置在量规垫的外部部分上以形成径向渐缩部分，以改善操纵性，减少量规垫的磨损和/或改善旋转钻头形成具有大体均匀的孔眼的能力 内径，特别是在井筒的定向钻井期间。

公开(公告)号：US20110259649A1

公开(公告)日：2011-10-27

申请号：US13178429

申请日：2011-07-07

申请人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

发明人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

IPC分类号： E21B10/36 ,  G06F17/50

CPC分类号： E21B10/08 ,  E21B10/16

摘要： A design process and resulting bit structure is provided for drill bits wherein cutter geometries on the face of the bit are tailored to optimize the distribution of one or more of forces, torque, work, or power of each cutter relative to other cutters. Balanced are the forces, torque, work, or power generated by each cutter in respect to other cutters that are working within the same region of cut, so that all cutters within the same region of cut are generating sufficiently comparable forces, torque, work, or power. In this manner all of the cutters on the bit may share as closely as possible the work and loads required to penetrate the subterranean rock. The design process produces a bit structure in which each cutter is doing similar levels of work or creating similar levels of force, torque, or power relative to other cutters within the same region of cut on the bit, within specified ranges of design criteria.

摘要翻译： 为钻头提供了设计过程和结果钻头结构，其中定位钻头表面上的切割器几何形状以优化每个切割器相对于其他切割器的力，力矩，功率或功率的分布。 平衡是由每个切割器相对于在相同切割区域内工作的其他切割器产生的力，扭矩，作业或动力，使得相同切割区域内的所有切割器产生足够可比的力，扭矩， 或电源。 以这种方式，钻头上的所有刀具可以尽可能接近渗透地下岩石所需的工作和载荷。 设计过程产生一个位结构，其中每个切割器在设计标准的特定范围内，在相同的切割区域内，相对于其他切割器在相同的工作水平或者产生类似的力，扭矩或功率水平。

公开(公告)号：US07827014B2

公开(公告)日：2010-11-02

申请号：US11462929

申请日：2006-08-07

申请人： Shilin Chen

发明人： Shilin Chen

IPC分类号： E21B47/16

CPC分类号： E21B7/04 ,  E21B7/06 ,  E21B7/064 ,  E21B10/00 ,  E21B41/00 ,  E21B44/00 ,  E21B49/003

摘要： Methods and systems may be provided for simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material.

摘要翻译： 可以提供方法和系统来模拟形成各种各样的定向井筒，包括具有可变倾斜速率和/或相对恒定倾斜速率的井筒。 该方法和系统还可以用于模拟在具有软的，中等和硬的地层材料的组合的地下地层中形成井孔，多层地层材料和设置在一层或多层地层材料中的相对硬的桁条。

公开(公告)号：US20100163312A1

公开(公告)日：2010-07-01

申请号：US12600832

申请日：2008-05-27

申请人： Shilin Chen ,  Riun Ashlie

发明人： Shilin Chen ,  Riun Ashlie

IPC分类号： E21B10/08 ,  B23P17/00

CPC分类号： E21B17/1092 ,  Y10T29/49

摘要： A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.

摘要翻译： 旋转钻头具有设置在其外部部分上的带有垫片的刀片，以在形成定向井筒期间提高旋转钻头的操纵性，而不牺牲横向稳定性。 量具焊盘中的一个或多个可以包括径向渐缩的外部部分和/或切除部分，以帮助减少相关联的量规焊盘的磨损。 对于一些应用，旋转钻头可以形成为具有具有相对均匀的外表面的量具垫的刀片。 硬面材料和/或按钮可以设置在量规垫的外部部分上以形成径向渐缩部分，以改善操纵性，减少量规垫的磨损和/或改善旋转钻头形成具有大体均匀的孔眼的能力 内径，特别是在井筒的定向钻井期间。

公开(公告)号：US07729895B2

公开(公告)日：2010-06-01

申请号：US11462918

申请日：2006-08-07

申请人： Shilin Chen

发明人： Shilin Chen

IPC分类号： G06F9/455

CPC分类号： E21B7/04 ,  E21B7/06 ,  E21B7/064 ,  E21B10/00 ,  E21B41/00 ,  E21B44/00 ,  E21B49/003

摘要： Methods and systems may be provided for simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of bit steerability and controllability calculated from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.

摘要翻译： 可以提供方法和系统来模拟形成各种各样的定向井筒，包括具有可变倾斜速率和/或相对恒定倾斜速率的井筒。 该方法和系统还可以用于模拟在具有软的，中等和硬的地层材料的组合的地下地层中形成井孔，多层地层材料和设置在一层或多层地层材料中的相对硬的桁条。 通过这种模拟计算的钻头操纵性和可控性的值可用于设计和/或选择用于形成定向井筒的钻井设备。

公开(公告)号：US07624823B2

公开(公告)日：2009-12-01

申请号：US11875098

申请日：2007-10-19

申请人： Shilin Chen

发明人： Shilin Chen

IPC分类号： E21B10/50 ,  E21B10/46

CPC分类号： E21B10/16

摘要： Roller cone drill bits may be formed with cutting elements and cutting structures optimized to increase downhole drilling life of an associated drill bit. The cutting zone, load zone and wear zone of each cutting element may be analyzed by finely meshing each cutting element into many small segments. The number of contacts between each meshed segment and portions of a downhole formation may be determined during discrete drilling time periods. A distribution of sliding velocity for each segment relative to portions of the downhole formation may also be determined during the discrete drilling time periods. Force profiles for each cutting zone may be used to determine associated loading zones. A wear profile for each cutting element may be estimated by combining the associated force profile with the associated distribution of sliding velocity.

摘要翻译： 滚子锥钻头可以形成有切割元件和切割结构，其被优化以增加相关钻头的井下钻孔寿命。 每个切割元件的切割区域，载荷区域和磨损区域可以通过将每个切割元件精细地啮合到许多小部分中来进行分析。 可以在离散的钻井时段期间确定每个网格段与井下地层的部分之间的接触次数。 每个段相对于井下地层的部分的滑动速度的分布也可以在离散的钻井时段期间确定。 每个切割区域的力轮廓可用于确定相关的装载区域。 每个切割元件的磨损轮廓可以通过将相关联的力分布与滑动速度的相关分布组合来估计。

公开(公告)号：US07434632B2

公开(公告)日：2008-10-14

申请号：US10919990

申请日：2004-08-17

申请人： Shilin Chen ,  Ping C. Sui

发明人： Shilin Chen ,  Ping C. Sui

IPC分类号： E21B10/16 ,  E21B10/08

CPC分类号： E21B10/16

摘要： Roller cone drill bits may be formed with cutting elements and cutting structures having cutting element profile angles selected to minimize cone wobble and improve life of associated bearings and seals. Normal force axes of the cutting elements may intersect with each other as a force center. Crest points of the cutting elements may be disposed on one or more circles extending from the associated force center.

摘要翻译： 滚子锥钻头可以形成有切割元件和切割结构，其具有选择的切割元件轮廓角以最小化锥形摆动并且改善相关联的轴承和密封件的寿命。 切割元件的法向力轴可以作为力中心彼此相交。 切割元件的顶点可以设置在从相关联的力中心延伸的一个或多个圆上。

公开(公告)号：US20080087471A1

公开(公告)日：2008-04-17

申请号：US11950221

申请日：2007-12-04

申请人： Shilin Chen ,  Ping Sui

发明人： Shilin Chen ,  Ping Sui

IPC分类号： E21B10/08

CPC分类号： E21B10/22 ,  E21B10/16

摘要： A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting structure with a minimal moment center located along each respective axis of rotation. Each respective bearing structure has a center point located proximate each respective minimal moment center.

摘要翻译： 滚子锥钻头可以包括最佳设计的轴承结构和切割结构。 滚子锥钻头可以包括通过相应的轴承结构可旋转地安装在相应主轴上的三个锥形组件。 每个锥形组件可以具有相应的切割结构，沿着每个相应的旋转轴线具有最小的力矩中心。 每个相应的轴承结构具有位于每个相应的最小力矩中心附近的中心点。

公开(公告)号：US20070029113A1

公开(公告)日：2007-02-08

申请号：US11462918

申请日：2006-08-07

申请人： Shilin Chen

发明人： Shilin Chen

IPC分类号： E21B47/02

CPC分类号： E21B7/04 ,  E21B7/06 ,  E21B7/064 ,  E21B10/00 ,  E21B41/00 ,  E21B44/00 ,  E21B49/003

摘要： Methods and systems may be provided for simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of bit steerability and controllability calculated from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.

摘要翻译： 可以提供方法和系统来模拟形成各种各样的定向井筒，包括具有可变倾斜速率和/或相对恒定倾斜速率的井筒。 该方法和系统还可以用于模拟在具有软的，中等和硬的地层材料的组合的地下地层中形成井孔，多层地层材料和设置在一层或多层地层材料中的相对硬的桁条。 通过这种模拟计算的钻头操纵性和可控性的值可用于设计和/或选择用于形成定向井筒的钻井设备。