公开(公告)号：US20090044985A1

公开(公告)日：2009-02-19

申请号：US12191442

申请日：2008-08-14

申请人： Greg Ricks ,  Leroy William Ledgerwood, III

发明人： Greg Ricks ,  Leroy William Ledgerwood, III

IPC分类号： E21B10/08

CPC分类号： E21B10/16

摘要： Embodiments of a system, method, and apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.

摘要翻译： 公开了一种用于通过调整紧凑间距来预测和减少通过滚子锥头的跟踪的系统，方法和装置的实施例。 相邻紧凑件或齿之间的不同间距提供了一个基本上不太可能跟踪的锥形排。 锥体上的给定行可以包括在连续组中以大约一半的连续组排列的压块。 剩余的大约一半的行包括交替的间距。 这种配置使得能够在现有技术的反跟踪间距方案中看不到非常宽的空间和随之而来的断裂和磨损的抗跟踪行为。

公开(公告)号：US08002053B2

公开(公告)日：2011-08-23

申请号：US12191442

申请日：2008-08-14

申请人： Greg Ricks ,  Leroy William Ledgerwood, III

发明人： Greg Ricks ,  Leroy William Ledgerwood, III

IPC分类号： E21B10/16

CPC分类号： E21B10/16

摘要： Embodiments of a system, method, and apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.

摘要翻译： 公开了一种用于通过调整紧凑间距来预测和减少通过滚子锥头的跟踪的系统，方法和装置的实施例。 相邻紧凑件或齿之间的不同间距提供了一个基本上不太可能跟踪的锥形排。 锥体上的给定行可以包括在连续组中以大约一半的连续组排列的压块。 剩余的大约一半的行包括交替的间距。 这种配置使得能够在现有技术的反跟踪间距方案中看不到非常宽的空间和随之而来的断裂和磨损的抗跟踪行为。

公开(公告)号：US06386297B1

公开(公告)日：2002-05-14

申请号：US09511617

申请日：2000-02-23

申请人： Craig Hodges Cooley ,  David Alexander Curry ,  Leroy William Ledgerwood, III

发明人： Craig Hodges Cooley ,  David Alexander Curry ,  Leroy William Ledgerwood, III

IPC分类号： E21B1202

CPC分类号： E21B49/003 ,  E21B44/00 ,  E21B2041/0028 ,  E21C39/00

摘要： A method is provided for generating an indicator of potential bit abrasion in a particular wellbore. Forensic wellbore data is obtained from at least one previously drilled wellbore which is determined to be comparable to the particular target wellbore. Typically, the comparable wellbore comprises an “offset” wellbore which is proximate the target wellbore, and which has similar geologic features. An inference engine computer program is provided which consists of executable program instructions. It is adapted to utilize a plurality of wellbore parameters, including the forensic wellbore data. The inference engine includes at least one rule matrix which defines a plurality of fuzzy sets. These fuzzy sets establish correspondence between the plurality of wellbore parameters and the indictor of potential bit abrasion. The inference engine computer program is loaded onto a data processing system. At least the forensic wellbore data is supplied as an input to the inference engine computer program. The data processing system is utilized to execute the program instructions of the inference engine computer program. This causes the application of the inputs to the inference engine computer program. The inference engine computer program produces as an output an indication of potential bit abrasion in the particular target wellbore.

摘要翻译： 提供了一种用于产生在特定井眼中潜在钻头磨损指标的方法。 从至少一个先前钻孔的井筒获得法证井井眼数据，其被确定为与特定目标井筒相当。 通常，可比较的井筒包括靠近目标井眼的“偏移”井眼，并具有类似的地质特征。 提供了由可执行程序指令组成的推理机计算机程序。 它适于利用多个井筒参数，包括法医井筒数据。 推理机包括定义多个模糊集合的至少一个规则矩阵。 这些模糊集合建立了多个井眼参数与潜在钻头磨损指标之间的对应关系。 推理机计算机程序被加载到数据处理系统上。 至少将取证井眼数据作为输入提供给推理机计算机程序。 数据处理系统用于执行推理机计算机程序的程序指令。 这导致将输入应用于推理机计算机程序。 推理机计算机程序作为输出产生特定目标井眼中潜在钻头磨损的指示。

公开(公告)号：US06353799B1

公开(公告)日：2002-03-05

申请号：US09511618

申请日：2000-02-23

申请人： Nigel Charles Meany ,  David Alexander Curry ,  Leroy William Ledgerwood, III ,  Craig Hodges Cooley

发明人： Nigel Charles Meany ,  David Alexander Curry ,  Leroy William Ledgerwood, III ,  Craig Hodges Cooley

IPC分类号： G06F1900

CPC分类号： E21B44/00 ,  E21B49/003 ,  E21B2041/0028

摘要： A method and apparatus are provided for generating an indicator of potential for abrupt changes in rock strength in a particular wellbore. Forensic wellbore data is obtained from at least one previously drilled wellbore which is determined to be comparable to the target wellbore. An interfacial severity computer program is provided. The program consists of executable program instructions. It is adapted to utilize a plurality of wellbore parameters, including at least one forensic wellbore data element. The interfacial severity computer program is loaded onto a data processing system. At least the forensic wellbore data, and possibly other wellbore parameter data elements, are supplied as an input to the interfacial severity computer program. The data processing system is utilized to execute program instructions of the interfacial severity computer program. This applies the inputs to the interfacial severity computer program which produces an output and indicator of the potential for abrupt changes in rock strength in the particular target wellbore.

摘要翻译： 提供了一种方法和装置，用于产生在特定井眼中岩石强度突然变化的潜在指标。 从至少一个先前钻孔的井筒获得法证井井眼数据，其被确定为与目标井筒相当。 提供界面严重性计算机程序。 该程序由可执行程序指令组成。 其适于利用多个井筒参数，包括至少一个法庭井筒数据元素。 界面强度计算机程序被加载到数据处理系统上。 至少将法医井眼数据以及可能的其他井眼参数数据元素作为输入提供给界面严重性计算机程序。 数据处理系统用于执行界面严重性计算机程序的程序指令。 这将输入应用于界面严重性计算机程序，其产生在特定目标井筒中的岩石强度的突然变化的潜力的输出和指标。

公开(公告)号：US06276465B1

公开(公告)日：2001-08-21

申请号：US09511619

申请日：2000-02-23

申请人： Craig Hodges Cooley ,  David Alexander Curry ,  Leroy William Ledgerwood, III

发明人： Craig Hodges Cooley ,  David Alexander Curry ,  Leroy William Ledgerwood, III

IPC分类号： E21B4400

CPC分类号： E21B10/00 ,  E21B44/00 ,  E21B49/00 ,  E21B2041/0028 ,  G01V1/50

摘要： A method is provided for generating an indicator of potential bit performance in a particular wellbore. Forensic wellbore data is obtained from at least one previously drilled wellbore which is determined to be comparable to the particular target wellbore. Typically, the comparable wellbore comprises an “offset” wellbore which is proximate the target wellbore, and which has similar geologic features. An inference engine computer program is provided which consists of executable program instructions. It is adapted to utilize a plurality of wellbore parameters, including the forensic wellbore data. The inference engine includes at least one rule matrix which defines a plurality of fuzzy sets. These fuzzy sets establish correspondence between the plurality of wellbore parameters and the indictor of potential bit performance. The inference engine computer program is loaded onto a data processing system. The forensic wellbore data and at least one other of the plurality of wellbore parameters is supplied as an input to the inference engine computer program. The data processing system is utilized to execute the program instructions of the inference engine computer program. This causes the application of the inputs to the inference engine computer program. The inference engine computer program produces as an output an indication of potential bit performance in the particular target wellbore.

摘要翻译： 提供了一种用于产生特定井眼中潜在钻头性能的指标的方法。 从至少一个先前钻孔的井筒获得法证井井眼数据，其被确定为与特定目标井筒相当。 通常，可比较的井筒包括靠近目标井眼的“偏移”井眼，并具有类似的地质特征。 提供由可执行程序指令组成的推理机计算机程序。 它适于利用多个井筒参数，包括法医井筒数据。 推理机包括定义多个模糊集合的至少一个规则矩阵。 这些模糊集合建立了多个井眼参数与潜在位性能指标之间的对应关系。 推理机计算机程序被加载到数据处理系统上。 将取证井眼数据和多个井筒参数中的至少一个作为输入提供给推理机计算机程序。 数据处理系统用于执行推理机计算机程序的程序指令。 这导致将输入应用于推理机计算机程序。 推理机计算机程序产生作为输出在特定目标井眼中潜在位性能的指示。