-
1.发明授权System and method for performing inversion on LWD resistivity logs with enhanced resolution 失效在LWD电阻率测井中进行反演的系统和方法，具有更高的分辨率
公开(公告)号：US5867806A
公开(公告)日：1999-02-02
申请号：US734772
申请日：1996-10-22
申请人： Robert W. Strickland , Gulamabbas A. Merchant , Charles E. Jackson , Herbert Max Joseph Illfelder
发明人： Robert W. Strickland , Gulamabbas A. Merchant , Charles E. Jackson , Herbert Max Joseph Illfelder
CPC分类号： G01V3/38
摘要： A system and method for performing inversion and for correcting for shoulder bed effect. The method enhances the resolution of wave propagation resistivity logs and corrects the logs for adjacent bed effects, whereby the resulting logs have a vertical response as good as wireline high-resolution induction logs. The method first performs logging while drilling on a formation to obtain LWD resistivity log data. The method then selects one or more control depths at one or more locations of each of a plurality of detected beds in the formation. The present invention includes a novel method for selecting bed boundaries from the log data, and the control depths are then determined based on the determined bed boundaries. The method then estimates the resistivity of each bed only at the selected control depths to produce an estimated resistivity of the beds. The method then computes a simulated log value at each control depth using a current estimate of the resistivity of the beds. The computed simulated log, is then compared to the actual log data at each control depth, and the resistivity of each bed is adjusted using the difference between the actual and simulated values at the control depths. The above method iteratively repeats a plurality of times until the simulated log substantially matches the actual log at the control depths.
摘要翻译： 一种用于执行反转和校正肩部床效应的系统和方法。 该方法提高了波传播电阻率测井的分辨率，并校正了相邻床效应的原木，从而得到的原木垂直响应与有线高分辨率感应测井一样好。 该方法首先在地层上钻井时进行测井以获得LWD电阻率测井数据。 然后，该方法在地层中的多个检测到的床中的每一个的一个或多个位置处选择一个或多个控制深度。 本发明包括从日志数据中选择床边界的新方法，然后基于确定的床边界来确定控制深度。 然后，该方法仅在所选择的控制深度处估计每个床的电阻率，以产生床的估计电阻率。 然后，该方法使用当前对床的电阻率的估计来计算每个控制深度处的模拟对数值。 然后将计算的模拟日志与每个控制深度的实际日志数据进行比较，并使用控制深度的实际值和模拟值之间的差值来调整每个床的电阻率。 上述方法迭代重复多次，直到模拟日志与控制深度的实际日志基本匹配。
-
公开(公告)号：US06600995B2
公开(公告)日：2003-07-29
申请号：US10288086
申请日：2002-11-05
IPC分类号： G06F1900
CPC分类号： G01V3/28
摘要： A coil array for high resolution induction logging comprises a transmitter, a first receiver set and a second receiver set. The second receiver set includes at least one portion of the first receiver set. A method for deriving an apparent conductivity log from at least one induction well log that comprises a plurality of depth samples comprises raising each depth sample to several predetermined powers, convolving in depth the powers of conductivity, and summing the convolutions to produce a conductivity log. An apparatus for measuring the resistivity of an earth formation, comprises a transmitter energized by a time-varying, periodic voltage, a set of receivers generating a receiver voltage, an analog-to-digital converter that outputs a digitized voltage signal, and a processor that receives the digitized voltage signal.
摘要翻译： 用于高分辨率感应测井的线圈阵列包括发射机，第一接收机组和第二接收机组。 第二接收机组包括第一接收机组的至少一部分。 从包括多个深度样本的至少一个感应测井数据导出视在电导率对数的方法包括将每个深度样本升高到若干预定功率，深度地卷积电导率，并将该卷积相加以产生电导率对数。 一种用于测量地层电阻率的装置包括由时变周期性电压激励的发射器，产生接收器电压的一组接收器，输出数字化电压信号的模数转换器和处理器 它接收数字化的电压信号。
-
公开(公告)号：US06597993B2
公开(公告)日：2003-07-22
申请号：US10288106
申请日：2002-11-05
IPC分类号： G01V318
CPC分类号： G01V3/28
摘要： A coil array for high resolution induction logging comprises a transmitter, a first receiver set and a second receiver set. The second receiver set includes at least one portion of the first receiver set. A method for deriving an apparent conductivity log from at least one induction well log that comprises a plurality of depth samples, comprises raising each depth sample to several predetermined powers, convolving in depth the powers of conductivity, and summing the convolutions to produce a conductivity log. An apparatus for measuring the resistivity of an earth formation, comprises a transmitter energized by a time-varying, periodic voltage, a set of receivers generating a receiver voltage, an analog-to-digital converter that outputs a digitized voltage signal, and a processor that receives the digitized voltage signal.
摘要翻译： 用于高分辨率感应测井的线圈阵列包括发射机，第一接收机组和第二接收机组。 第二接收机组包括第一接收机组的至少一部分。 从至少一个包括多个深度样本的感应测井对数导出表观电导率对数的方法包括：将每个深度样本提升到若干预定的功率，深入地卷积电导率，并对卷积求和以产生电导率对数 。 一种用于测量地层电阻率的装置包括由时变周期性电压激励的发射器，产生接收器电压的一组接收器，输出数字化电压信号的模数转换器和处理器 它接收数字化的电压信号。
-
公开(公告)号：US06606565B1
公开(公告)日：2003-08-12
申请号：US09460553
申请日：1999-12-14
IPC分类号： G01V318
CPC分类号： G01V3/28
摘要： A coil array for high resolution induction logging comprises a transmitter, a first receiver set positioned at a first distance from the transmitter and a second receiver set positioned at a second distance from the transmitter, and the second receiver set includes at least one portion of the first receiver set. Also disclosed is a method for deriving an apparent conductivity log from at least one induction well log that comprises a plurality of depth samples, comprising the steps of raising each depth sample of the apparent conductivity signal to several predetermined powers to generate a plurality of powers of conductivity, convolving in depth the powers of conductivity with a plurality of filters, where each power has a distinct filter, and summing the results of all of the convolutions to produce a conductivity log that is substantially free from the effects of adjacent beds and the nonlinear effects of true conductivity. Also disclosed is an apparatus for measuring the resistivity of an earth formation penetrated by a borehole, comprising at least one transmitter that is energized by a time-varying, periodic voltage, at least one set of receivers generating a receiver voltage, an analog-to-digital converter that periodically samples the receiver voltage at a predetermined sampling rate and outputs a digitized voltage signal, a processor that receives the digitized voltage signal, and a set of N accumulators that collates and averages successive sets of N samples from the analog-to-digital converters to output a set of N averages.
-
公开(公告)号：US07814036B2
公开(公告)日：2010-10-12
申请号：US10600991
申请日：2003-06-19
申请人： Dingding Chen , Luis E. San Martin , Gulamabbas A. Merchant , Robert W. Strickland , Martin T. Hagan
发明人： Dingding Chen , Luis E. San Martin , Gulamabbas A. Merchant , Robert W. Strickland , Martin T. Hagan
IPC分类号： G06E1/00 , G06E3/00 , G06F15/18 , G06G7/00 , G06G7/48 , G01V1/00 , G01V1/40 , G01V3/18 , G01V5/04 , G01V9/00 , E21B47/14 , G01V3/00 , G01V5/00
CPC分类号： G01V3/38 , Y10S706/929
摘要： An artificial neural network, ANN, and method of training the ANN for inversion of logging tool signals into well logs of formation parameters is disclosed. Properly selected synthetic models of earth formations are used to train the ANN. The models include Oklahoma and chirp type of formations. In each model parameter contrasts of from 10 to 1 to about 100 to 1 are included. Models including maximum and minimum parameter values spanning the operating range of the selected logging tool are included. Parameter contrasts at interfaces are limited to realistic values found in earth formations. The selected models are used to generate synthetic tool signals, which are then used as inputs to the ANN for training. When the ANN coefficients are properly adjusted to produce an output matching the original models, the ANN can be used for inversion of any real signals from the selected logging tool.
摘要翻译： 公开了人工神经网络ANN和训练用于将测井工具信号反演的ANN用于地层参数测井的方法。 使用适当选择的地层合成模型来训练ANN。 这些模型包括俄克拉荷马州和啁啾型地层。 在每个模型参数中，包括10到1到大约100比1的对比度。 包括跨越所选日志记录工具的操作范围的最大和最小参数值的模型。 界面的参数对比仅限于在地层中发现的现实值。 所选择的模型用于生成合成工具信号，然后将其用作用于训练的ANN的输入。 当ANN系数被适当地调整以产生与原始模型匹配的输出时，ANN可用于从所选择的测井工具反演任何实际信号。
-
公开(公告)号：US06618675B2
公开(公告)日：2003-09-09
申请号：US10079343
申请日：2002-02-20
申请人： Robert W. Strickland
发明人： Robert W. Strickland
IPC分类号： G01B726
摘要： A well logging system is disclosed having an improved speed correction apparatus and method. One embodiment comprises a logging sonde, a wireline cable, a distance sensor, a tension sensor, and a surface computer. The logging sonde moves through a wellbore while making logging measurements of the formation around the wellbore. The sonde includes an accelerometer to measure acceleration of the logging sonde. As the wireline cable is reeled in on the surface, the distance sensor detects the length of wireline cable that is retrieved. The tension sensor measures the tension in the wireline cable. The surface computer receives measurements from the accelerometer, the distance sensor, and the tension sensor, and determines intervals in which the logging tool is stuck. At least in part, this is done by finding “slow” intervals in which the wireline cable is stretching at about the same rate that the wireline cable is being reeled in.
-
公开(公告)号：US06794875B2
公开(公告)日：2004-09-21
申请号：US10151497
申请日：2002-05-20
申请人： Robert W. Strickland
发明人： Robert W. Strickland
IPC分类号： G01V310
CPC分类号： G01V3/28
摘要： A coil arrangement and method of collecting and processing data in induction logging of wells is disclosed. The coil arrangement includes three essentially identical coils made of elliptical conductive loops lying in a plane tilted from the axis of the logging tool. Each coil is centered on the same point in space. Data are preferably collected by using the coil arrangement for both transmitter and receiver, and transmitting at three closely-spaced frequencies, one from each of the transmitter coils. The transmitted signals are received and recorded, at which time they are operated on mathematically to create rotation of an after-the-fact virtual sonde for measuring desired earth formation properties.
摘要翻译： 公开了一种在井的感应测井中收集和处理数据的线圈布置和方法。 线圈装置包括由位于从测井工具的轴线倾斜的平面中的椭圆导电回路制成的三个基本相同的线圈。 每个线圈都位于空间相同的点上。 优选地通过使用用于发射机和接收机的线圈装置来收集数据，并且以三个紧密间隔的频率发射，每个发射机线圈中的一个。 发送的信号被接收和记录，此时它们在数学上操作以产生用于测量所需地球形成特性的事后虚拟探测器的旋转。
-
8.发明授权Method and apparatus for determining the conductivity of subsurface earth formations by filtering and summing in-phase and quadrature conductivity signals with correction values 失效通过对具有校正值的同相和正交电导率信号进行滤波和求和来确定地下地层的电导率的方法和装置
公开(公告)号：US5146167A
公开(公告)日：1992-09-08
申请号：US708142
申请日：1991-05-30
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： An improved induction well logging processing technique for determining conductivity measurements of subsurface earth strata. An in-phase conductivity signal and a quadrature conductivity signal are obtained from a downhole induction logging tool. The in-phase conductivity signal and the cubed square root of the in-phase conductivity signal are filtered by a first filter and a second filter, respectively. The outputs of the filters may be summed to provide a first conductivity signal having reduced environmental effects and indicating the conductivity of the earth formation under test. Additionally, the in-phase conductivity signal and the quadrature signal may be filtered and summed to provide a second conductivity signal. A weighted average of the first and second conductivity signals may be used as an indication of the earth formation conductivity.
摘要翻译： 一种用于确定地下地层电导率测量的改进的感应测井处理技术。 从井下感应测井仪获得同相电导率信号和正交电导率信号。 同相电导率信号和同相电导率信号的立方平方根分别由第一滤波器和第二滤波器滤波。 滤波器的输出可以相加以提供具有降低的环境影响并指示被测地球形成电导率的第一电导率信号。 另外，可以对同相电导率信号和正交信号进行滤波和求和以提供第二导电信号。 第一和第二导电信号的加权平均值可以用作地球导电性的指示。
-
9.发明授权Coil array for a high resolution induction logging tool and method of logging an earth formation 失效用于高分辨率感应测井工具的线圈阵列和测井地层的方法
公开(公告)号：US5065099A
公开(公告)日：1991-11-12
申请号：US604542
申请日：1990-10-29
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： An induction tool including a coil array having a plurality of transmitter coils and a plurality of receiver coils. Each plurality of coils is symmetrically arranged on an insulated mandrel about a selected point. The induction tool also includes an oscillator circuit that provides an alternating frequency signal to the transmitter coils. A receiver circuit is connected to the receiver coils to measure signals indicative of the voltages induced on these receiver coils to the surface. By varying the spacing between the receiver coils and transmitter coils it is possible to independently vary the vertical and radial measurement capabilities of the tool of the present invention. A dual induction tool having high vertical resolution is also disclosed. The dual induction tool includes a pair of transmitter/receiver coil arrays, each transmitter/receiver coil array having a different transmitter-to-receiver coil spacing and substantially indentical vertical resolution. A single receiver coil is located at a selected point on an insulated sonde and a pair of variable symmetrically disposed bucking coils are located on either side of the receiver coil. Two pairs of identical transmitter coils are similarly symmetrically disposed on either side of the receiver coil. In a preferred embodiment, each pair of transmitter coils is alternately energized and the bucking coils are selectively adjusted to compensate for the variation in transmitter-to-receiver coil spacing.
摘要翻译： 一种感应工具，包括具有多个发射器线圈和多个接收线圈的线圈阵列。 每个多个线圈围绕选定点对称地布置在绝缘心轴上。 感应工具还包括向发射器线圈提供交流频率信号的振荡器电路。 接收器电路连接到接收器线圈以测量表示在这些接收器线圈上感应到表面的电压的信号。 通过改变接收器线圈和发射器线圈之间的间隔，可以独立地改变本发明的工具的垂直和径向测量能力。 还公开了具有高垂直分辨率的双感应工具。 双感应工具包括一对发射器/接收器线圈阵列，每个发射器/接收器线圈阵列具有不同的发射器到接收器线圈间隔和基本上不连续的垂直分辨率。 单个接收器线圈位于绝缘探头上的选定点处，并且一对可变对称布置的降压线圈位于接收器线圈的任一侧。 两对相同的发射器线圈类似地对称地设置在接收器线圈的任一侧上。 在优选实施例中，每对发射器线圈交替地被激励，并且选择性地调节降压线圈以补偿发射器到接收器线圈间隔的变化。
-
10.发明授权Method and apparatus for filtering magnetic debris out of work-functioning baths 失效将磁粉过滤出工作功能浴的方法和设备
公开(公告)号：US4206000A
公开(公告)日：1980-06-03
申请号：US962592
申请日：1978-11-21
CPC分类号： B03C1/28
摘要： A floatable magnetic filter screen (10, 40, 52, 60) for removing metallic debris from work-functioning baths (26, 26') comprises a tubular rectangular outer frame (11, 11', 14, 14', 16, 61) that supports a plurality of magnet-forming webs (18, 18', 62), in a predetermined array, within the central opening thereof. The magnets (23, 23', 64) of each web, when required, are encapsulated within a protective material covering (e.g., 19, 19') so as to physically isolate them from a given bath (26, 26') within which the filter screen (10, 40, 52, 60) is to be employed. While the filter screen is adapted to normally float on the surface of a given bath, through piece part (33, 33', 53) initiated immersion of the filter screen in the bath, preferably using a piece part-carrying basket (36, 36', 51), the bath solution is effectively forced through the filter screen during both the downward and subsequent upward displacement of the latter. As a result of such reciprocal displacement, any loose metallic debris (38) in the bath is magnetically drawn against magnet-defined sites on the filter screen, and may be readily removed periodically therefrom, such as with a simple water spray (39).
摘要翻译： 用于从工作功能浴（26,26'）去除金属碎屑的可浮动磁性过滤网（10,40,52,60）包括管状的矩形外框架（11,11'，14,14'，16,61） 其在其中心开口内以预定的阵列支撑多个磁体形成网（18,18'，62）。 当需要时，每个纤维网的磁体（23,23'，64）被封装在保护材料覆盖物（例如19,19'）内，以便将它们与给定的浴（26,26'）物理隔离，其中 将使用过滤网（10,40,52,60）。 虽然过滤网适于通常浮在给定浴槽的表面上，但通过件部件（33,33'，53）开始将过滤网浸入浴中，优选地使用零件承载篮（36,36） '，51），在后者的向下和随后的向上位移期间，浴溶液被有效地强制通过过滤网。 由于这种相互移位的结果，浴中的任何松散的金属碎屑（38）被磁性地抽吸在过滤网上的磁体限定位置，并且可以容易地从其周期性地移除，例如用简单的喷水（39）。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.03 秒)
