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公开(公告)号：US20190338601A1
公开(公告)日：2019-11-07
申请号：US15970614
申请日：2018-05-03
摘要： A drilling rig has a bidirectional eccentric stabilizer for use in a wellbore. The bidirectional eccentric stabilizer is coupled between a drill string and a bottom hole assembly. The bidirectional eccentric stabilizer has a shaft connected between a first shaft end and a second shaft end, an annulus formed longitudinally through the shaft and a cutting portion formed on an outer surface of the shaft. The cutting portion has a first cutting portion, a second cutting portion, a plurality of helical blades, a plurality of flutes, a plurality of cutting nodes, and a plurality of impact arrestors. The bidirectional eccentric stabilizer has a center of eccentric rotation which is offset from the longitudinal axis of the shaft, enabling the bidirectional eccentric stabilizer to form a larger wellbore than a drill bit on the bottom hole assembly and a larger diameter wellbore than originally drilled by the drill bit.
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公开(公告)号：US5767399A
公开(公告)日：1998-06-16
申请号：US621412
申请日：1996-03-25
CPC分类号： E21B49/02 , E21B49/006 , G01N33/24
摘要： A method of assaying the compressive strength of rock comprises testing a primary plurality of rock samples of similar lithology, at least some of which have different porosities, to determine, for each sample respectively, a value corresponding to compressive strength and a value corresponding to porosity. A first series of pairs of electrical compressive strength and porosity signals, the signals of each pair corresponding, respectively, to the compressive strength and porosity values for a respective one of the samples, is generated. These signals are processed by a computer to extrapolate additional such pairs of signals and generate a second series of electrical signals corresponding to compressive strength as a function of porosity. The second series of signals may correspond to unconfined compressive strength, and may be further processed, to generate a cumulative series of signals, using electrical adjustment signals corresponding to other conditions affecting the compressive strength of the rock. Site characteristics of the rock for a wellbore locus, at a plurality of sites along the length of the locus, and as the rock would be addressed by a drill bit, are determined. At least one of these site characteristics is porosity. The site characteristics are used to generate a plurality of site signals, which, upon processing with the second series of signals (or cumulative series, if any), generate in-situ compressive strength signals corresponding to the in-situ compressive strengths of the rock at the respective sites.
摘要翻译： 测定岩石的抗压强度的方法包括测试具有相似岩性的初级多个岩石样品，其至少一些具有不同的孔隙度，以分别为每个样品确定对应于抗压强度的值和对应于孔隙度的值 。 第一系列的电抗压强度和孔隙度信号，每一对的信号分别对应于相应一个样品的抗压强度和孔隙度值。 这些信号由计算机处理以推断额外的这种信号对，并产生对应于作为孔隙度的函数的压缩强度的第二系列电信号。 第二系列信号可以对应于无侧限的抗压强度，并且可以进一步处理，以产生累积的一系列信号，使用对应于影响岩石的抗压强度的其它条件的电调节信号。 确定井眼轨迹的岩石的位置特征，沿着轨迹长度的多个位置以及作为岩石的钻头的位置特征。 这些位置特征中的至少一个是孔隙度。 场地特征用于产生多个位置信号，其在用第二系列信号（或累积序列（如果有的话）处理时）产生对应于岩石的原位抗压强度的原位抗压强度信号 在各自的网站。
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3.发明授权Method and system for predicting performance of a drilling system for a given formation 有权用于预测给定地层钻井系统性能的方法和系统
公开(公告)号：US6109368A
公开(公告)日：2000-08-29
申请号：US192389
申请日：1998-11-13
申请人： William A. Goldman , Lee Morgan Smith , Oliver Mathews, III , Kambiz Arab , William W. King , Kelley M. Murrell , Gary E. Weaver
发明人： William A. Goldman , Lee Morgan Smith , Oliver Mathews, III , Kambiz Arab , William W. King , Kelley M. Murrell , Gary E. Weaver
CPC分类号： E21B12/02 , E21B44/00 , E21B44/005 , E21B49/003 , E21B2041/0028
摘要： A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation includes generating a geology characteristic of the formation per unit depth according to a prescribed geology model, obtaining specifications of proposed drilling equipment for use in the drilling of the well bore, and predicting a drilling mechanics in response to the specifications as a function of the geology characteristic per unit depth according to a prescribed drilling mechanics model. The geology characteristic includes at least rock strength. The specifications includes at least a bit specification of a recommended drill bit. Lastly, the predicted drilling mechanics include at least one of bit wear, mechanical efficiency, power, and operating parameters. A display is provided for generating a display of the geology characteristic and predicted drilling mechanics per unit depth, including either a display monitor or a printer.
摘要翻译： 用于预测用于在给定地层中钻井的钻井系统的性能的方法和装置包括根据规定的地质模型产生每单位深度的地层的地质特征，获得所提出的钻井设备的规格，用于 根据规定的钻井力学模型，根据作为每单位深度的地质特征的函数的规格，预测井眼的钻孔，并预测钻井力学。 地质特征至少包括岩石强度。 规格至少包括推荐钻头的位规格。 最后，预测的钻井力学包括钻头磨损，机械效率，功率和操作参数中的至少一个。 提供了一种显示器，用于产生地质特征和每单位深度的预测钻井力学的显示，包括显示监视器或打印机。
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公开(公告)号：US5704436A
公开(公告)日：1998-01-06
申请号：US621414
申请日：1996-03-25
摘要： A method of regulating drilling conditions applied to a given well bit comprises assaying the compressive strength of the formation in an interval to be drilled by said bit. Wear of critical bit structure of the same size and design as in said given bit and which structure has drilled material of approximately the same compressive strength as that so assayed, is analyzed along with respective drilling data for the worn structure. From said analysis, a power limit for the respective compressive strength, above which power limit excessive wear is likely to occur is determined. Drilling conditions, such as rotary speed and weight-on-bit, at which the given bit is operated are regulated to maintain a desired operating power less than or equal to the power limit. Where several feasible rotary speed/weight-on-bit combinations may result in the desired operating power, these conditions are optimized.
摘要翻译： 调节施加到给定钻井钻井条件的方法包括在所述钻头钻出的间隔内测定地层的抗压强度。 与所述给定钻头相同尺寸和设计的关键钻头结构的磨损以及具有与所测定的大致相同的抗压强度的钻孔材料的磨损与所磨损结构的相应钻孔数据一起进行分析。 根据所述分析，确定了可能发生功率极限过大磨损的相应抗压强度的功率极限。 调节给定位的操作的钻孔条件，例如旋转速度和重量位，以保持小于或等于功率极限的期望的操作功率。 在几个可行的旋转速度/重量对比组合可能导致期望的操作功率的情况下，这些条件被优化。
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公开(公告)号：US06374926B1
公开(公告)日：2002-04-23
申请号：US09598131
申请日：2000-06-21
IPC分类号： E21B4500
CPC分类号： E21B44/00 , E21B12/02 , E21B44/005 , E21B49/003 , E21B2041/0028
摘要： A method of assaying work of an earth boring bit of a given size and design comprises the steps of drilling a hole with the bit from an initial point to a terminal point. A plurality of electrical incremental actual force signals are generated, each corresponding to a force of the bit over a respective increment of the distance between the initial and terminal points. A plurality of electrical incremental distance signals are also generated, each corresponding to the length of the increment for a respective one of the incremental actual force signals. The incremental actual force signals and the incremental distance signals are processed to produce a value corresponding to the total work done by the bit in drilling from the initial point to the terminal point. Using such a basic work assay, a number of other downhole occurrences and/or conditions can be assayed. These include a wear rating for the type of bit, a determination of whether such a bit can drill a given interval of formation, and assessment of the abrasivity of rock drilled (which in turn can be used to modify the assays of other conditions and/or occurrences), a model of the wear of such a bit in current use, and a determination of the mechanical efficiency of the bit.
摘要翻译： 一种测定给定尺寸和设计的钻孔钻孔工作的方法包括以下步骤：从初始点到终点钻该钻头的孔。 产生多个电增量实际力信号，每个电力增量实际力信号分别对应于在初始点和终点之间的距离的相应增量上的位的力。 还产生多个电增量距离信号，每个相应于增量实际力信号中的相应增量的增量的长度。 处理增量实际力信号和增量距离信号，以产生一个对应于从初始点到终点的钻孔完成的总功。 使用这样的基本工作测定法，可以测定许多其它井下事件和/或条件。 这些包括对钻头类型的耐磨等级，确定这样的钻头是否可以钻出给定的形成间隔，以及评估钻石的磨蚀性（其又可以用于修改其他条件和/ 或发生），当前使用中这种位的磨损的模型以及位的机械效率的确定。
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公开(公告)号：US6131673A
公开(公告)日：2000-10-17
申请号：US48360
申请日：1998-03-26
CPC分类号： E21B44/00 , E21B12/02 , E21B44/005 , E21B49/003 , E21B2041/0028
摘要： A method of assaying work of an earth boring bit of a given size and design comprises the steps of drilling a hole with the bit from an initial point to a terminal point. A plurality of electrical incremental actual force signals are generated, each corresponding to a force of the bit over a respective increment of the distance between the initial and terminal points. A plurality of electrical incremental distance signals are also generated, each corresponding to the length of the increment for a respective one of the incremental actual force signals. The incremental actual force signals and the incremental distance signals are processed to produce a value corresponding to the total work done by the bit in drilling from the initial point to the terminal point. Using such a basic work assay, a number of other downhole occurrences and/or conditions can be assayed. These include a wear rating for the type of bit, a determination of whether such a bit can drill a given interval of formation, and assessment of the abrasivity of rock drilled (which in turn can be used to modify the assays of other conditions and/or occurrences), a model of the wear of such a bit in current use, and a determination of the mechanical efficiency of the bit.
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公开(公告)号：US07035778B2
公开(公告)日：2006-04-25
申请号：US10133078
申请日：2002-04-26
IPC分类号： G06F17/50
CPC分类号： E21B44/00 , E21B12/02 , E21B44/005 , E21B49/003 , E21B2041/0028
摘要： A method of assaying work of an earth boring bit of a given size and design including establishing characteristics of the bit of given size and design. The method further includes simulating a drilling of a hole in a given formation as a function of the characteristics of the bit of given size and design and at least one rock strength of the formation. The method further includes outputting a performance characteristic of the bit, the performance characteristic including a bit wear condition and a bit mechanical efficiency determined as a function of the simulated drilling.
摘要翻译： 一种测定给定尺寸和设计的地球钻头的工作的方法，包括确定给定尺寸和设计的钻头的特性。 该方法还包括模拟给定地层中的孔的钻孔，作为给定尺寸和设计的钻头的特征以及地层的至少一个岩石强度的函数。 该方法还包括输出该位的性能特性，其性能特征包括作为模拟钻孔的函数确定的位磨损状况和位机械效率。
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公开(公告)号：US5794720A
公开(公告)日：1998-08-18
申请号：US621411
申请日：1996-03-25
CPC分类号： E21B44/00 , E21B12/02 , E21B44/005 , E21B49/003 , E21B2041/0028
摘要： A method of assaying work of an earth boring bit of a given size and design comprises the steps of drilling a hole with the bit from an initial point to a terminal point and recording the distance between the initial and terminal points. A plurality of electrical incremental actual force signals are generated, each corresponding to a force of the bit over a respective increment of the distance between the initial and terminal points. A plurality of electrical incremental distance signals are also generated, each corresponding to the length of the increment for a respective one of the incremental actual force signals. The incremental actual force signals and the incremental distance signals are processed to produce a value corresponding to the total work done by the bit in drilling from the initial point to the terminal point. Using such a basic work assay, a number of other downhole occurrences and/or conditions can be assayed. These include a wear rating for the type of bit, a determination of whether such a bit can drill a given interval of formation, and assessment of the abrasivity of rock drilled (which in turn can be used to modify the assays of other conditions and/or occurrences), a model of the wear of such a bit in current use, and a determination of the mechanical efficiency of the bit.
摘要翻译： 一种测定给定尺寸和设计的钻孔钻头的工作的方法包括以下步骤：从初始点到终点钻该钻头的孔，并记录初始点和终点之间的距离。 产生多个电增量实际力信号，每个电力增量实际力信号分别对应于在初始点和终点之间的距离的相应增量上的位的力。 还产生多个电增量距离信号，每个相应于增量实际力信号中的相应增量的增量的长度。 处理增量实际力信号和增量距离信号，以产生一个对应于从初始点到终点的钻孔完成的总功。 使用这样的基本工作测定法，可以测定许多其它井下事件和/或条件。 这些包括钻头类型的磨损等级，确定这样的钻头是否能够钻出给定的形成间隔，以及评估钻石的磨蚀性（其又可用于修改其他条件和/ 或发生），当前使用中这种位的磨损的模型以及位的机械效率的确定。
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