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1. 发明申请

US20060278436A1 Drilling apparatus with reduced exposure of cutters 有权
标题翻译：具有减少刀具暴露的钻孔设备
公开(公告)号：US20060278436A1
公开(公告)日：2006-12-14
申请号：US11507279
申请日：2006-08-21
申请人： Mark Dykstra , William Heuser , Michael Doster , Theodore Zaleski , Jack Oldham , Terry Watts , Daniel Ruff , Rodney Walzel , Christopher Beuershausen
发明人： Mark Dykstra , William Heuser , Michael Doster , Theodore Zaleski , Jack Oldham , Terry Watts , Daniel Ruff , Rodney Walzel , Christopher Beuershausen
IPC分类号： E21B10/62
CPC分类号： E21B10/43 , E21B10/42 , E21B10/46 , E21B10/567 , E21B10/573 , E21B12/04 , E21B2010/566
摘要： A rotary drilling apparatus and method for drilling subterranean formations, including a body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation, so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per rotation of the drilling apparatus, as well as to control the amount of torque experienced by the drilling apparatus and an optionally associated bottomhole assembly regardless of the effective weight-on-bit are all disclosed. The exterior of the drilling apparatus may include a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute an additional weight applied to the drilling apparatus against the bottom of the borehole without exceeding the compressive strength of the formation rock.
摘要翻译：一种用于钻探地下地层的旋转钻井设备和方法，包括：主体，其上设置有至少一个切割器，其上展现出减少或限制地暴露于地层，以便控制至少一个切割器的切割深度，以便控制钻孔设备每旋转切割成形材料的体积，以及控制钻孔设备和任选相关的井下组件所经历的扭矩的数量，而不管有效的钻头位置如何。钻孔设备的外部可以包括多个叶片结构，其在其上承载至少一个这样的切割器，并且包括足够量的轴承表面面积以接触地层，以便大体上分配施加到钻孔设备的附加重量，钻孔不超过地层岩石的抗压强度。

2. 发明申请

US20050284660A1 Drill bits with reduced exposure of cutters 有权
公开(公告)号：US20050284660A1
公开(公告)日：2005-12-29
申请号：US11214524
申请日：2005-08-30
申请人： Mark Dykstra , William Heuser , Michael Doster , Theodore Zaleski , Jack Oldham , Terry Watts , Daniel Ruff , Rodney Walzel , Christopher Beuershausen
发明人： Mark Dykstra , William Heuser , Michael Doster , Theodore Zaleski , Jack Oldham , Terry Watts , Daniel Ruff , Rodney Walzel , Christopher Beuershausen
IPC分类号： E21B10/42 , E21B10/43 , E21B10/46 , E21B10/56 , E21B10/567 , E21B10/573 , E21B12/04 , E21B10/08
CPC分类号： E21B10/43 , E21B10/42 , E21B10/46 , E21B10/567 , E21B10/573 , E21B12/04 , E21B2010/566
摘要： A rotary drag bit and method for drilling subterranean formations, including a bit body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation, so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per bit rotation, as well as to control the amount of torque experienced by the bit and an optionally associated bottomhole assembly regardless of the effective weight-on-bit are all disclosed. The exterior of the bit preferably includes a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute an additional weight applied to the bit against the bottom of the borehole without exceeding the compressive strength of the formation rock.

3. 发明申请

US20070106487A1 Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durability 审中-公开
标题翻译：用于优化旋转拖曳钻头和旋转拖曳钻头的效率和耐久性的方法，旨在实现最佳的效率和耐久性
公开(公告)号：US20070106487A1
公开(公告)日：2007-05-10
申请号：US11594710
申请日：2006-11-08
申请人： David Gavia , Jack Oldham , Mathews George , Michael Doster
发明人： David Gavia , Jack Oldham , Mathews George , Michael Doster
IPC分类号： G06G7/48
CPC分类号： E21B10/54 , E21B10/00
摘要： A method for evaluating existing drill bits and drill bit designs includes measuring several desired characteristics of a bit, including the wear experienced in drilling a formation, such as an actual formation or a simulated formation or a laboratory test fixture. A computer model may be used to evaluate the work-force and/or the sliding-wear rates that cutting elements of the bit experience as compared with the rate-of-penetration and/or durability of the bit. This information may be used to design a new drill bit, which may involve modification of the cutting elements (e.g., moving the location, volume (size and shape) or number of cutting elements from areas of the bit that receive lower work-force and sliding-wear rates to those areas that experience relatively greater work-force and sliding wear-rates. This may permit the cutting elements to be oriented more aggressively relative to a formation to be drilled. Other parameters that may be optimized include the bit profile, blade count, hydraulics, or the like.
摘要翻译：用于评估现有钻头和钻头设计的方法包括测量钻头的几个期望特性，包括钻探地层（例如实际地层或模拟地层）或实验室测试夹具所经历的磨损。可以使用计算机模型来评估钻头的切削元件与钻头的穿透速率和/或耐久性相比的经验的作用力和/或滑动磨损率。该信息可以用于设计新的钻头，其可以涉及切割元件的修改（例如，移动位置，体积（尺寸和形状）或切割元件的数量从接收较低的作用力的钻头的区域，以及对于经历相对较大的工作力和滑动磨损率的区域的滑动磨损率，这可能允许切削元件相对于要钻削的地层更积极地定向，可以优化的其它参数包括钻头轮廓，叶片数量，液压装置等。

4. 发明申请

US20080083568A1 METHODS FOR APPLYING WEAR-RESISTANT MATERIAL TO EXTERIOR SURFACES OF EARTH-BORING TOOLS AND RESULTING STRUCTURES 有权
标题翻译：将耐磨材料应用于地球工具外壳表面和结构结构的方法
公开(公告)号：US20080083568A1
公开(公告)日：2008-04-10
申请号：US11864482
申请日：2007-09-28
申请人： James Overstreet , Michael Doster , Mark Morris , Kenneth Gilmore , Robert Welch , Danielle Roberts
发明人： James Overstreet , Michael Doster , Mark Morris , Kenneth Gilmore , Robert Welch , Danielle Roberts
IPC分类号： E21B10/46 , B21K5/04
CPC分类号： E21B10/54 , E21B10/43
摘要： Earth-boring tools include wear-resistant materials disposed in at least one recess formed in an exterior surface of a body thereof. Exposed surfaces of the wear-resistant material are substantially level with exterior surfaces of the body adjacent the wear-resistant material. In some embodiments, recesses may be formed in formation-engaging surfaces of blades of earth-boring rotary tools, adjacent one or more inserts secured to bodies of earth-boring tools, or adjacent one or more cutting elements secured to bodies of earth-boring tools. Methods of forming earth-boring tools include filling one or more recesses formed in an exterior surface of a body with wear-resistant material and causing exposed surfaces of the wear-resistant material to be substantially level with the exterior surface of the body.
摘要翻译：钻孔工具包括设置在形成在其本体的外表面中的至少一个凹部中的耐磨材料。耐磨材料的露出表面与身体的与耐磨材料相邻的外表面基本平齐。在一些实施例中，凹槽可以形成在钻孔旋转工具的叶片的形成接合表面中，邻近一个或多个插入件固定到钻孔工具的主体上，或者邻近一个或多个切割元件固定到镗孔体工具形成钻孔工具的方法包括用耐磨材料填充形成在主体的外表面中的一个或多个凹部，并使耐磨材料的暴露表面与主体的外表面基本平齐。

5. 发明授权

US06426857B1 Protective circuit for a power field-effect transistor 失效
标题翻译：用于功率场效应晶体管的保护电路
公开(公告)号：US06426857B1
公开(公告)日：2002-07-30
申请号：US09411955
申请日：1999-10-04
申请人： Michael Doster , Juergen Motz , Horst Singer , Rolf Falliano
发明人： Michael Doster , Juergen Motz , Horst Singer , Rolf Falliano
IPC分类号： H02H326
CPC分类号： H03K17/08122 , H03K17/0822 , H03K2017/0806
摘要： In a protective circuit for a field-effect transistor which has at least drain-, source- and gate-terminals and is operated as a power switch, overloading of the FET is prevented in case of a power supply voltage of inverted polarity in that the switching voltage is able to be supplied to the gate terminal as a driving voltage via a charge pump. The charge pump is powered via a suitable circuit (e.g., a Graetz bridge rectifier) independently of the polarity of the applied power supply voltage. In case of incorrect polarity of the power supply voltage, the charge pump is driven to output a driving voltage via a suitable circuit (e.g., a diode connected to the base terminal).
摘要翻译：在至少具有漏极，源极和栅极端子并作为电源开关工作的场效应晶体管的保护电路中，在反向极性的电源电压的情况下，防止了FET的过载，因为开关电压能够通过电荷泵作为驱动电压提供给栅极端子。电荷泵通过适当的电路（例如，Graetz桥式整流器）供电，独立于所施加的电源电压的极性。在电源电压的极性不正确的情况下，电荷泵被驱动以通过合适的电路（例如，连接到基极的二极管）输出驱动电压。

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