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21. 发明授权

US08547789B2 Method for gas zone detection using sonic wave attributes 有权
标题翻译：使用声波属性进行气体区域检测的方法
公开(公告)号：US08547789B2
公开(公告)日：2013-10-01
申请号：US11964731
申请日：2007-12-27
申请人： Peter T. Wu , Alain Dumont , Pierre Campanac , David Linton Johnson
发明人： Peter T. Wu , Alain Dumont , Pierre Campanac , David Linton Johnson
IPC分类号： G01V1/48
CPC分类号： G01V1/40 , G01V1/48
摘要： A method for determining on a real time logging while drilling (LWD) basis gas within earth formations traversed by a borehole. Continuous LWD acoustic measurements are recorded and processed including coherent energy and attenuation attributes to detect downhole gas zones and kick during drilling operations.
摘要翻译：一种用于在通过钻孔穿过的地层内的钻井（LWD）基础气体的实时测井时确定的方法。记录和处理连续LWD声学测量，包括相干能量和衰减属性，以检测井下气体区域并在钻井操作期间踢。

22. 发明申请

US20120065889A1 Real-Time Fracture Detection And Fracture Orientation Estimation Using Tri-Axial Induction Measurements 有权
标题翻译：使用三轴导向测量的实时断裂检测和断层取向估计
公开(公告)号：US20120065889A1
公开(公告)日：2012-03-15
申请号：US13217983
申请日：2011-08-25
申请人： Peter T. Wu , Dong Weixin , Thomas D. Barber , Dean Homan
发明人： Peter T. Wu , Dong Weixin , Thomas D. Barber , Dean Homan
IPC分类号： G06F19/00
CPC分类号： G01V3/28 , G01V3/38
摘要： A method for determining existence of a fracture in a formation surrounding a wellbore drilled through subsurface rock formations includes calculating vertical resistivity, horizontal resistivity, apparent formation dip, apparent formation azimuth and axial resistivity for a plurality of longitudinal instrument spacings using measurements from a triaxial induction well logging instrument disposed in the formation. A spread in the axial resistivity values is determined and the axial resistivity spread threshold therefrom. Fracture indicator values and fracture orientation values are calculated from transverse components of the triaxial induction measurements. Presence of a fracture is indicated when at least one of the fracture indicator value exceeds a selected threshold, the axial resistivity spread exceeds the spread threshold and when the apparent formation dip exceeds a selected threshold.
摘要翻译：用于确定在通过地下岩层钻探的井筒周围的地层中的裂缝的存在的方法包括使用来自三轴感应的测量来计算多个纵向仪器间距的垂直电阻率，水平电阻率，表观地层倾角，表观形成方位角和轴向电阻率测井仪器配置在地层中。确定轴向电阻率值的扩展，其轴向电阻率扩展阈值。断裂指标值和断裂取向值由三轴感应测量的横向分量计算。当断裂指标值中的至少一个超过所选择的阈值时，指示断裂的存在，轴向电阻率扩展超过扩展阈值，并且当表观地层倾角超过选定的阈值时。

23. 发明申请

US20090168598A1 METHOD FOR PERMEABLE ZONE DETECTION 有权
标题翻译：渗透带检测方法
公开(公告)号：US20090168598A1
公开(公告)日：2009-07-02
申请号：US11964736
申请日：2007-12-27
申请人： Peter T. Wu , Alain Dumont , Pierre Campanac , David Linton Johnson
发明人： Peter T. Wu , Alain Dumont , Pierre Campanac , David Linton Johnson
IPC分类号： G01V1/40
CPC分类号： G01V1/50
摘要： A method for estimating formation permeability from measured sonic wave Stoneley attributes and particularly the Stoneley attributes of slowness (DTst) and attenuation (ATTst), taking into consideration the existence of a heavy walled drill collar at the end of the drill string and the relative lack of borehole mud cake during a drilling operation. In the subject LWD application a real-time qualitative indication for fracture and permeable zones is estimated from Stoneley measurements. This information is useful to a driller to make important timely decisions about drilling and completion programs.
摘要翻译：考虑到钻柱末端存在厚壁钻铤，相对缺乏的方法，用于估计测量声波斯通利属性，特别是斯通利度量（DTst）和衰减（ATTst）的地层渗透率在钻井作业期间钻孔泥饼。在主题LWD应用中，从Stoneley测量估计了断裂和渗透区域的实时定性指示。这些信息对于钻井者对钻井和完井计划作出重要的及时决定是有用的。

24. 发明授权

US07516015B2 System and method for detection of near-wellbore alteration using acoustic data 有权
标题翻译：使用声学数据检测近井筒改变的系统和方法
公开(公告)号：US07516015B2
公开(公告)日：2009-04-07
申请号：US11308083
申请日：2006-03-06
申请人： Bikash K. Sinha , Peter T. Wu , James G. L. Thompson
发明人： Bikash K. Sinha , Peter T. Wu , James G. L. Thompson
IPC分类号： G01V1/40
CPC分类号： G01V1/50
摘要： A method for monitoring a formation property includes determining at least two slowness values from at least two datasets each characterizing an acoustic wave having a different frequency traversing a formation; and deriving an indicator based on the at least two slowness values. A system for monitoring a formation property includes a process and a memory, wherein the memory stores a program having instructions for: determining at least two slowness values from at least two datasets each characterizing an acoustic wave having a different frequency traversing a formation; and deriving an indicator based on the at least two slowness values.
摘要翻译：用于监测地层特性的方法包括从至少两个数据集确定至少两个慢度值，每个数据集表征具有穿过地层的不同频率的声波; 以及基于所述至少两个慢度值导出指示符。用于监视形成特性的系统包括处理和存储器，其中存储器存储具有以下指令的程序：用于从至少两个数据集确定至少两个慢度值，每个数据集表征穿过地层的不同频率的声波; 以及基于所述至少两个慢度值导出指示符。

25. 发明授权

US07334651B2 Kick warning system using high frequency fluid mode in a borehole 失效
标题翻译：在井眼中使用高频流体模式的踢警告系统
公开(公告)号：US07334651B2
公开(公告)日：2008-02-26
申请号：US10710569
申请日：2004-07-21
申请人： Peter T. Wu
发明人： Peter T. Wu
IPC分类号： E21B47/00
CPC分类号： G01V1/50 , E21B21/08 , E21B47/101
摘要： Techniques for detecting a kick in a borehole include acquiring a set of measurements with a sonic tool in the borehole; determining borehole mud slowness from the set of measurements; and comparing the mud slowness with a selected criterion, wherein the determining the mud slowness includes determining fluid mode slowness as a function of frequency for at least one fluid mode, and determining the mud slowness from the fluid mode slowness.
摘要翻译：用于检测钻孔中的踢脚的技术包括使用钻孔中的声波工具获取一组测量值; 从该组测量中确定井底泥浆慢度; 以及将泥浆慢度与所选择的标准进行比较，其中确定泥浆慢度包括确定作为至少一种流体模式的频率的函数的流体模式慢度，以及从流体模式慢度确定泥浆慢度。

26. 发明授权

US07251566B2 Pump off measurements for quality control and wellbore stability prediction 有权
标题翻译：抽出质量控制和井筒稳定性预测的测量
公开(公告)号：US07251566B2
公开(公告)日：2007-07-31
申请号：US11308102
申请日：2006-03-07
申请人： Peter T. Wu , Andrew Hawthorn , Tom R. Bratton , Bikash K. Sinha
发明人： Peter T. Wu , Andrew Hawthorn , Tom R. Bratton , Bikash K. Sinha
IPC分类号： G01V1/40 , G01V3/18 , G01V5/04 , G01V9/00
CPC分类号： G01V1/46
摘要： A method for obtaining high-quality well logging data acquired during a drilling operation includes acquiring well logging data during a pump-off period when a mud pump is turned off; and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet period within the pump-off period, wherein the quiet period is substantially free of interference from turning the mud pump on or off.
摘要翻译：一种用于获得在钻井操作期间获取的高质量测井数据的方法，包括在泥浆泵关闭时的抽出期间获取测井数据; 以及从所获取的测井数据中提取数据子集，其中所述数据子集对应于所述泵送期间内的安静时段，其中所述安静时段基本上不受打开或关闭所述泥浆泵的干扰。

27. 发明授权

US5886526A Apparatus and method for determining properties of anisotropic earth formations 失效
标题翻译：用于确定各向异性地球地层性质的装置和方法
公开(公告)号：US5886526A
公开(公告)日：1999-03-23
申请号：US876821
申请日：1997-06-16
申请人： Peter T. Wu
发明人： Peter T. Wu
IPC分类号： G01V3/30 , G01V3/08 , G01V3/10
CPC分类号： G01V3/30
摘要： A method is disclosed for determining the horizontal resistivity, vertical resistivity, and dip of formations surrounding a borehole, comprising the following steps: (a) suspending a logging device in the borehole; (b) transmitting electromagnetic energy from a transmitter location on the logging device, and receiving the transmitted electromagnetic energy at receiver locations on the logging device for a first transmitter-to-receivers spacing associated with the transmitter and receiver locations; (c) determining, from the received electromagnetic energy, measurement characteristics associated with the first transmitter-to-receivers spacing; (d) repeating steps (b) and (c) for a plurality of further transmitter-to-receivers spacings to obtain measurement characteristics for the plurality of further transmitter-to-receivers spacings; (e) generating a model of anisotropic formations that has horizontal resistivity Rh, vertical resistivity Rv, and a Dip angle with respect to a borehole reference; (f) selecting initial model values of Rh, Rv and Dip; (g) computing an error value from the differences, for each of a plurality of the transmitter-to-receivers spacings, between the measurement characteristics and model measurement characteristics obtained from the model using the model values of Rh, Rv, and Dip; (h) modifying the model values of Rh, Rv and Dip; (i) repeating steps (g) and (h) to minimize the error value; and (j) outputting the ultimately modified model values of Rh, Rv, and Dip.
摘要翻译：公开了一种用于确定围绕钻孔的地层的水平电阻率，垂直电阻率和倾角的方法，包括以下步骤：（a）将测井装置悬挂在钻孔中; （b）从记录装置上的发射机位置发送电磁能量，以及在所述测井装置的接收器位置处接收与所述发射机和接收机位置相关联的第一发射机到接收机间隔的所发送的电磁能量; （c）从接收到的电磁能量确定与第一发射机到接收机间隔相关联的测量特性; （d）对于多个另外的发射机到接收机间隔重复步骤（b）和（c）以获得多个其它发射机到接收机间隔的测量特性; （e）产生相对于井眼参考的具有水平电阻率Rh，垂直电阻率Rv和倾角的各向异性地层模型; （f）选择Rh，Rv和Dip的初始模型值; （g）根据使用Rh，Rv和Dip的模型值从模型获得的测量特性和模型测量特性之间的差异，针对多个发射器到接收器间隔中的每一个计算误差值; （h）修改Rh，Rv和Dip的模型值; （i）重复步骤（g）和（h）以使误差值最小化; 和（j）输出Rh，Rv和Dip的最终修改的模型值。

28. 发明授权

US5594343A Well logging apparatus and method with borehole compensation including multiple transmitting antennas asymmetrically disposed about a pair of receiving antennas 失效
标题翻译：测井装置和钻孔补偿方法，包括围绕一对接收天线非对称设置的多个发射天线
公开(公告)号：US5594343A
公开(公告)日：1997-01-14
申请号：US349355
申请日：1994-12-02
申请人： Brian Clark , Peter T. Wu , Victor E. Grijalva
发明人： Brian Clark , Peter T. Wu , Victor E. Grijalva
IPC分类号： G01V3/30 , G01V3/08 , G01V3/10
CPC分类号： G01V3/30
摘要： An apparatus for determining a property of earth formations surrounding a borehole is presented. In accordance with a particular embodiment, an elongated logging device movable through a borehole is provided with a transmitter array consisting of only first, third, and second transmitting antennas longitudinally spaced on the device. A pair of longitudinally spaced receiving antennas are also provided and are located between the second transmitting antenna and one of the first and third transmitting antennas. In particular, the first, third, and second transmitting antennas are spaced from the midpoint between the receiver pair by first, third, and second distances, respectively, where the first and second distances are substantially the same while being different from the third distance. This antenna arrangement is possible while still providing a borehole compensated output.
摘要翻译：提出了一种用于确定围绕钻孔的地层的性质的装置。根据特定实施例，可移动穿过钻孔的细长记录装置设置有仅由在装置上纵向间隔开的第一，第三和第二发射天线组成的发射器阵列。还提供一对纵向间隔的接收天线，并且位于第二发射天线与第一和第三发射天线之一之间。特别地，第一，第三和第二发射天线分别与接收机对之间的中点分开第一，第三和第二距离，其中第一和第二距离基本相同，而与第三距离不同。这种天线布置是可能的，同时仍然提供井眼补偿输出。

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