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1. 发明授权

US07729860B2 Drilling system powered by energy-harvesting sensor 有权
标题翻译：钻井系统由能量采集传感器供电
公开(公告)号：US07729860B2
公开(公告)日：2010-06-01
申请号：US11490974
申请日：2006-07-21
申请人： Jahir Pabon , Julio Guerrero , Joachim Sihler , Demosthenis Pafitis
发明人： Jahir Pabon , Julio Guerrero , Joachim Sihler , Demosthenis Pafitis
IPC分类号： G01V1/40
CPC分类号： G01V1/44
摘要： A method and system is provided for determining the value of an attribute of ambient energy at a drilling assembly at the bottom of a borehole. Ambient energy includes kinetic energy, hydraulic energy and thermal energy. Attributes include vibration frequency spectrum, pressure difference, and temperature difference. The method uses energy harvested by at least one energy-harvesting sensor to power the system. The system generates data signals from at least one energy-harvesting sensor at one or more locations along a downhole drilling assembly, and transmits data up the borehole.
摘要翻译：提供了一种方法和系统，用于确定在钻孔底部的钻井组件处的环境能量属性的值。环境能量包括动能，液压能和热能。属性包括振动频谱，压力差和温差。该方法使用由至少一个能量收集传感器收获的能量来为系统供电。该系统在沿着井下钻井组件的一个或多个位置处从至少一个能量收集传感器生成数据信号，并将数据传送到钻孔。

2. 发明申请

US20080033653A1 Drilling system powered by energy-harvesting sensor 有权
标题翻译：钻井系统由能量采集传感器供电
公开(公告)号：US20080033653A1
公开(公告)日：2008-02-07
申请号：US11490974
申请日：2006-07-21
申请人： Jahir Pabon , Julio Guerrero , Joachim Sihler , Demosthenis Pafitis
发明人： Jahir Pabon , Julio Guerrero , Joachim Sihler , Demosthenis Pafitis
IPC分类号： G01V1/40
CPC分类号： G01V1/44
摘要： A method and system is provided for determining the value of an attribute of ambient energy at a drilling assembly at the bottom of a borehole. Ambient energy includes kinetic energy, hydraulic energy and thermal energy. Attributes include vibration frequency spectrum, pressure difference, and temperature difference. The method uses energy harvested by at least one energy-harvesting sensor to power the system. The system generates data signals from at least one energy-harvesting sensor at one or more locations along a downhole drilling assembly, and transmits data up the borehole.
摘要翻译：提供了一种方法和系统，用于确定在钻孔底部的钻井组件处的环境能量属性的值。环境能量包括动能，液压能和热能。属性包括振动频谱，压力差和温差。该方法使用由至少一个能量收集传感器收获的能量来为系统供电。该系统在沿着井下钻井组件的一个或多个位置处从至少一个能量收集传感器生成数据信号，并将数据传送到钻孔。

3. 发明授权

US07984771B2 Methods and apparatus for attenuating drillstring vibrations 有权
标题翻译：减少钻柱振动的方法和装置
公开(公告)号：US07984771B2
公开(公告)日：2011-07-26
申请号：US12887045
申请日：2010-09-21
申请人： Jahir Pabon , Joachim Sihler , Demosthenis Pafitis , Chaur-Jian Hsu
发明人： Jahir Pabon , Joachim Sihler , Demosthenis Pafitis , Chaur-Jian Hsu
IPC分类号： E21B7/24
CPC分类号： E21B17/07
摘要： Apparatus and methods are described for highly attenuating vibrations of a drillstring assembly while drilling. In one embodiment, vibrations are attenuated by introducing one or more vibration attenuation modules at appropriate assembly locations. For example, vibration attenuation modules may be inserted at locations where vibration energy is expected to be maximal. In one embodiment the vibration attenuation modules include cavities loosely packed with particles of solid material such as sand or metallic powder. In one embodiment, the cavity walls are rough and/or include geometric features that enhance vibration energy transfer to the loosely packed particles in the cavity(ies). The vibration energy is dissipated via friction and inelastic particle-particle and particle-wall collisions that occur as a result of drillstring motion.
摘要翻译：描述了用于在钻孔时高度衰减钻柱组件的振动的装置和方法。在一个实施例中，通过在适当的组装位置引入一个或多个振动衰减模块来衰减振动。例如，振动衰减模块可以插入在预期振动能量最大的位置。在一个实施例中，振动衰减模块包括松散地填充有诸如砂或金属粉末的固体材料颗粒的空腔。在一个实施例中，空腔壁是粗糙的和/或包括几何特征，其增强振动能量传递到空腔中松散包装的颗粒。振动能量通过钻柱运动产生的摩擦和非弹性粒子 - 粒子和粒子 - 壁碰撞消散。

4. 发明授权

US08307914B2 Drill bits and methods of drilling curved boreholes 有权
标题翻译：钻孔钻孔方法和钻孔方法
公开(公告)号：US08307914B2
公开(公告)日：2012-11-13
申请号：US12556111
申请日：2009-09-09
申请人： Demosthenis Pafitis , Jahir Pabon , Joachim Sihler
发明人： Demosthenis Pafitis , Jahir Pabon , Joachim Sihler
IPC分类号： E21B7/08 , E21B10/62
CPC分类号： E21B7/064 , E21B10/42 , E21B10/62
摘要： Drill bits and methods of drilling curved boreholes comprising a drill bit including a bit body and one or more cutting blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths. Another aspect of the invention provides a method for drilling a curved borehole. The method includes: providing a drill string including a drill bit including a bit body and one or more blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths; rotating the drill string; and selectively actuating the one or more blades to a plurality of cut depths; thereby drilling a curved borehole.
摘要翻译：钻头和钻孔方法，其包括钻头，钻头包括钻头体和位于钻头体内的一个或多个切割刀片，所述一个或多个刀片可单独地致动到多个切割深度。本发明的另一方面提供了一种用于钻出弯曲钻孔的方法。该方法包括：提供钻柱，其包括钻头，钻头包括钻头体和位于钻头体内的一个或多个刀片，所述一个或多个刀片可独立地致动到多个切削深度; 旋转钻柱; 以及选择性地将所述一个或多个叶片致动到多个切割深度; 从而钻出弯曲的钻孔。

5. 发明申请

US20070202350A1 Reducing abrasive wear in wear resistant coatings 有权
标题翻译：减少耐磨涂层磨损
公开(公告)号：US20070202350A1
公开(公告)日：2007-08-30
申请号：US11363872
申请日：2006-02-28
申请人： Alan Humphreys , Partha Ganguly , Demosthenis Pafitis
发明人： Alan Humphreys , Partha Ganguly , Demosthenis Pafitis
IPC分类号： B32B15/04
CPC分类号： C23C30/00 , C23C4/06 , Y10T428/12576 , Y10T428/12951 , Y10T428/252
摘要： An abrasion resistant coating and method are provided wherein the abrasion resistant coating contains both ductile and brittle components having a bimodal size distribution. The abrasion resistant coating is initially applied to a substrate in contact with an abrasive environment. The abrasive resistant coating having a bimodal size distribution results in the minimized exposure of the ductile components of the wear surface to the abrasive environment such that the life of the abrasive resistant coating is extended.
摘要翻译：提供了耐磨涂层和方法，其中耐磨涂层包含具有双峰尺寸分布的延性和脆性组分。耐磨涂层最初被施加到与磨料环境接触的基底上。具有双峰尺寸分布的耐磨涂层导致磨损表面的延性部件最小化地暴露于研磨环境，使得耐磨损涂层的寿命延长。

6. 发明授权

US6019180A Method for evaluating the power output of a drilling motor under downhole conditions 失效
标题翻译：井下条件下钻井电机功率输出评估方法
公开(公告)号：US6019180A
公开(公告)日：2000-02-01
申请号：US69525
申请日：1998-04-29
申请人： Demosthenis Pafitis , Vernon Koval
发明人： Demosthenis Pafitis , Vernon Koval
IPC分类号： E21B44/00
CPC分类号： E21B44/00 , Y10T137/86445
摘要： A procedure is described for determining the power output of a downhole drilling motor, when the motor is inside the wellbore. The technique uses stand-pipe pressure and fluid flow rate as the main inputs. The power output of the motor is calculated by carrying out two low flow stall tests at flow rates lower than the drilling flow rate. These tests result in "off-bottom" and stall pressures at the two flow rates. Another off-bottom pressure is taken at the actual flow rate that will be used during drilling operations. From the use of the off-bottom and stall pressure measurements, a determination is made of the differential pressure across the motor and the stall pressure at the actual drilling fluid flow rate. A full power curve and a predicted operating stand-pipe pressure for optimal power generation are provided based on an experimentally verified assumption regarding the change in rotation rate of the motor versus the differential pressure across the motor power section.
摘要翻译：描述了当电机在井眼内部时确定井下钻井马达的功率输出的程序。该技术采用立管压力和流体流量作为主要输入。通过以低于钻井流量的流量进行两个低流量失速试验来计算电机的功率输出。这些测试导致两个流速下的“底部”和失速压力。在钻井作业期间将采用的实际流量取另外的底部底部压力。通过使用底部和失速压力测量，确定电动机两端的压差和实际钻井液流速下的失速压力。基于关于电动机的转速与电动机功率部分的压差的变化的实验验证的假设，提供了用于最佳发电的全功率曲线和预测的操作立管压力。

7. 发明授权

US07544412B2 Reducing abrasive wear in wear resistant coatings 有权
标题翻译：减少耐磨涂层磨损
公开(公告)号：US07544412B2
公开(公告)日：2009-06-09
申请号：US11363872
申请日：2006-02-28
申请人： Alan O. Humphreys , Partha Ganguly , Demosthenis Pafitis
发明人： Alan O. Humphreys , Partha Ganguly , Demosthenis Pafitis
IPC分类号： B32B9/00
CPC分类号： C23C30/00 , C23C4/06 , Y10T428/12576 , Y10T428/12951 , Y10T428/252
摘要： An abrasion resistant coating and method are provided wherein the abrasion resistant coating contains both ductile and brittle components having a bimodal size distribution. The abrasion resistant coating is initially applied to a substrate in contact with an abrasive environment. The abrasive resistant coating having a bimodal size distribution results in the minimized exposure of the ductile components of the wear surface to the abrasive environment such that the life of the abrasive resistant coating is extended.
摘要翻译：提供了耐磨涂层和方法，其中耐磨涂层包含具有双峰尺寸分布的延性和脆性组分。耐磨涂层最初被施加到与磨料环境接触的基底上。具有双峰尺寸分布的耐磨涂层导致磨损表面的延性部件最小化地暴露于研磨环境，使得耐磨损涂层的寿命延长。

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