公开(公告)号：US06522137B1

公开(公告)日：2003-02-18

申请号：US09605805

申请日：2000-06-28

申请人： Boqin Sun ,  Reza Taherian ,  Abdurrahman Sezginer ,  Steven F. Crary

发明人： Boqin Sun ,  Reza Taherian ,  Abdurrahman Sezginer ,  Steven F. Crary

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： A downhole NMR measurement apparatus for use in a borehole includes at least one magnet, at least one RF transmission coil, at least one gradient coil and circuitry. The magnet(s) establish a magnetic field in a region of a formation that at least partially surrounds the measurement apparatus. The RF transmission coils(s) transmit RF pulses pursuant to an NMR pulse sequence into the region to, in combination with the magnetic field, induce the generation of spin echo signals from a resonance volume within the region. The gradient coil(s) establish a pulsed gradient field in the resonance volume, and the circuitry is coupled to the gradient coil(s) to control the generation of the pulsed gradient field to phase encode the spin echo signals for purposes of high resolution imaging of the formation.

摘要翻译： 用于钻孔的井下NMR测量装置包括至少一个磁体，至少一个RF传输线圈，至少一个梯度线圈和电路。 磁体在至少部分地围绕测量装置的地层区域中建立磁场。 RF传输线圈根据NMR脉冲序列将RF脉冲发送到与该磁场相结合的区域中，从该区域内的共振体积引起自旋回波信号的产生。 梯度线圈在谐振体积中建立脉冲梯度场，并且电路耦合到梯度线圈以控制脉冲梯度场的产生以对自旋回波信号进行相位编码，以用于高分辨率成像 的形成。

公开(公告)号：US06326784B1

公开(公告)日：2001-12-04

申请号：US09186951

申请日：1998-11-05

申请人： Krishnamurthy Ganesan ,  Steven F. Crary ,  Ralf Heidler ,  Bruno Luong ,  Peter Speier

发明人： Krishnamurthy Ganesan ,  Steven F. Crary ,  Ralf Heidler ,  Bruno Luong ,  Peter Speier

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/385

摘要： The present invention relates generally to an apparatus and method for obtaining an azimuthally resolved nuclear magnetic resonance measurement of an earth formation traversed by a borehole. The measurement can be made while drilling or using a wireline tool. At least one gradient coil is positioned circumferentially around the tool. A magnetic field is produced by the coil in a region of the formation facing the coil. The magnetic field is substantially parallel to the static magnetic field produced by a pair of permanent magnets which form a part of the tool. The additional field causes an additional phase shift for spins located in the region so that the spins subjected to the additional field do not form a spin-echo.

摘要翻译： 本发明一般涉及一种用于获得由钻孔穿过的地层的方位解析核磁共振测量的装置和方法。 可以在钻孔或使用有线工具时进行测量。 至少一个梯度线圈围绕工具周向定位。 在面向线圈的地层的区域中，线圈产生磁场。 磁场基本上平行于形成工具的一部分的一对永磁体产生的静磁场。 附加场引起位于该区域中的自旋的附加相移，使得经受附加场的自旋不形成自旋回波。

公开(公告)号：US06232778B1

公开(公告)日：2001-05-15

申请号：US09096320

申请日：1998-06-11

申请人： Peter Speier ,  Steven F. Crary ,  Robert L. Kleinberg ,  Charles Flaum

发明人： Peter Speier ,  Steven F. Crary ,  Robert L. Kleinberg ,  Charles Flaum

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： The present invention provides methods for determining the bound fluid volume (BFV) of a formation utilizing nuclear magnetic resonance (NMR) techniques in which less than full polarization occurs and in which less than a complete NMR distribution is acquired. The effect of the polarizing static magnetic field is shortened in time by applying a shortened wait time between NMR measurements so that only the bound fluid of the formation is polarized. The shortened wait time is effectuated by early application of the oscillating magnetic field to the formation which, in conjunction with a limited number of refocusing pulses, induces signals in the formation that are measured by the NMR tool. The peak amplitude of these signals corresponds to the BFV. The present invention provides information so that a partial polarization calculation curve in T2 lies almost equally between an empirical tapered cutoff curve and a theoretical tapered cutoff curve. Moreover, because no T2 information must be acquired, the method is especially suited for logging-while-drilling operations, where the drill string moves uncontrollably during the NMR measurement.

摘要翻译： 本发明提供使用核磁共振（NMR）技术测定地层的结合流体体积（BFV）的方法，其中发生少于全极化，并且其中获得小于完整的NMR分布。 通过在NMR测量之间施加缩短的等待时间来缩短偏振静磁场的效果，使得只有结合的结构的流体被极化。 缩短的等待时间是通过将振荡磁场早期应用于地层来实现的，其结合有限数量的重聚焦脉冲，通过NMR工具测量地层中的信号。 这些信号的峰值幅度对应于BFV。 本发明提供信息，使得T2中的部分极化计算曲线几乎等同于经验锥形截止曲线和理论锥形截止曲线之间。 此外，由于不能获得T2信息，所以该方法特别适用于在钻井操作期间的钻井操作，其中钻柱在NMR测量期间不受控制地移动。

公开(公告)号：US20130025939A1

公开(公告)日：2013-01-31

申请号：US13191354

申请日：2011-07-26

申请人： DENIS HELIOT ,  Steven F. Crary ,  Jean Seydoux

发明人： DENIS HELIOT ,  Steven F. Crary ,  Jean Seydoux

IPC分类号： E21B47/00 ,  E21B7/04 ,  G01V3/00 ,  G01V9/00 ,  G06F19/00

CPC分类号： E21B44/00 ,  E21B47/022 ,  G06Q50/02

摘要： During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. If the measured data exceeds the probability risk threshold associated with the drilling operation, then the panistic inversion and risk estimate module may generate an alert.

摘要翻译： 在钻井作业期间，钻井作业的测量数据可以采用全局反演和风险估算模块接收。 全局反演和风险估计模块可以从使用测量数据和一个或多个地球模型的平稳反演中产生多个数学解。 具有各种参数的一个或多个地球模型可以在钻井之前和/或在钻井操作发生时被选择。 对于从全局反演产生的多个数学解的每个解，平均反演和风险估计模块可以确定测量数据是否超过与钻井操作相关联的一个或多个概率风险阈值。 如果测量数据超过与钻井操作相关联的概率风险阈值，则全局反演和风险估计模块可能会产生警报。

公开(公告)号：US06566874B1

公开(公告)日：2003-05-20

申请号：US09356844

申请日：1999-07-19

申请人： Peter Speier ,  Martin E. Poitzsch ,  Steven F. Crary

发明人： Peter Speier ,  Martin E. Poitzsch ,  Steven F. Crary

IPC分类号： G01V300

CPC分类号： G01N24/081 ,  G01V3/32

摘要： An NMR measurement apparatus is potentially subject to relative motion between the apparatus and a sample. The measurement apparatus includes at least one magnet, at least one coil and circuitry that is coupled to the magnet(s) and coil(s). The circuitry is adapted to use the magnet(s) and coil(s) to perform at least one NMR measurement and indicate the results of the NMR measurement(s). The results are then analyzed to determine an effect of the motion on the measurement(s).

摘要翻译： NMR测量装置潜在地受到装置和样品之间的相对运动。 测量装置包括至少一个磁体，至少一个线圈和耦合到磁体和线圈的电路。 电路适于使用磁体和线圈进行至少一个NMR测量并指示NMR测量的结果。 然后分析结果以确定运动对测量的影响。

公开(公告)号：US09045967B2

公开(公告)日：2015-06-02

申请号：US13191354

申请日：2011-07-26

申请人： Denis Heliot ,  Steven F. Crary ,  Jean Seydoux

发明人： Denis Heliot ,  Steven F. Crary ,  Jean Seydoux

IPC分类号： E21B44/00 ,  E21B47/022

CPC分类号： E21B44/00 ,  E21B47/022 ,  G06Q50/02

摘要： During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. If the measured data exceeds the probability risk threshold associated with the drilling operation, then the panistic inversion and risk estimate module may generate an alert.

摘要翻译： 在钻井作业期间，钻井作业的测量数据可以采用全局反演和风险估算模块接收。 全局反演和风险估计模块可以从使用测量数据和一个或多个地球模型的平稳反演中产生多个数学解。 具有各种参数的一个或多个地球模型可以在钻井之前和/或在钻井操作发生时被选择。 对于从全局反演产生的多个数学解的每个解，平均反演和风险估计模块可以确定测量数据是否超过与钻井操作相关联的一个或多个概率风险阈值。 如果测量数据超过与钻井操作相关联的概率风险阈值，则全局反演和风险估计模块可能会产生警报。

公开(公告)号：US06237404B1

公开(公告)日：2001-05-29

申请号：US09031926

申请日：1998-02-27

申请人： Steven F. Crary ,  Ralf Heidler ,  Cengiz Esmersoy ,  Martin E. Poitzsch

发明人： Steven F. Crary ,  Ralf Heidler ,  Cengiz Esmersoy ,  Martin E. Poitzsch

IPC分类号： G06F1900

CPC分类号： G01V3/18 ,  E21B44/00 ,  E21B47/00 ,  E21B47/12 ,  G01V1/40

摘要： There are many natural pauses during rotary drilling operations where a portion of the drill string remains stationary. Pauses include drill pipe connections, circulating time, and fishing operations. These pauses are used to obtain formation evaluation measurements that take a long time or that benefit from a quiet environment, as opposed to the naturally noisy drilling environment. Various techniques that are sensitive to the mud flow, weight-on-bit, or motion of the drill string may be used alone or in combination to identify the drilling mode and control the data acquisition sequence.

摘要翻译： 在旋转钻井操作期间有许多自然停顿，其中钻柱的一部分保持静止。 暂停包括钻杆连接，循环时间和捕鱼作业。 这些暂停用于获得需要很长时间或从安静环境中获益的地层评估测量，而不是自然嘈杂的钻井环境。 对钻柱的泥浆流量，钻头重量或运动敏感的各种技术可以单独使用或组合使用以识别钻井模式并控制数据采集序列。

公开(公告)号：US06246236B1

公开(公告)日：2001-06-12

申请号：US09186950

申请日：1998-11-05

申请人： Martin E. Poitzsch ,  Steven F. Crary ,  Krishnamurthy Ganesan ,  Ralf Heidler ,  Bruno Luong ,  Peter Speier

发明人： Martin E. Poitzsch ,  Steven F. Crary ,  Krishnamurthy Ganesan ,  Ralf Heidler ,  Bruno Luong ,  Peter Speier

IPC分类号： G01V300

CPC分类号： G01V11/005 ,  G01N24/081 ,  G01R33/385 ,  G01V3/32

摘要： The present invention is directed to a nuclear magnetic resonance logging-while-drilling tool. The tool comprises a drill bit, drill string, a plurality of RF antennas, and at least one gradient coil. The tool further comprises a plurality of magnets that are polarized in a direction parallel to the longitudinal axis of the tool but opposite to each other. The configuration of magnets and antennas provides for at least two NMR regions of investigation.

摘要翻译： 本发明涉及一种核磁共振测井同时钻探工具。 该工具包括钻头，钻柱，多个RF天线和至少一个梯度线圈。 该工具还包括多个磁体，它们在平行于工具的纵向轴线但彼此相对的方向上被极化。 磁体和天线的配置提供至少两个NMR调查区域。