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公开(公告)号：EP2976500B1
公开(公告)日：2018-09-05
申请号：EP14767564.9
申请日：2014-02-10
CPC分类号： G01L1/242 , E21B47/00 , G01H9/004 , G01K11/32 , G01K2011/322 , G01V8/16 , G01V2210/1429
摘要： A downhole optical sensing system can include an optical fiber positioned in the well, the optical fiber including multiple cores, and one of the cores having a Brillouin scattering coefficient which is different from another one of the cores. A method of sensing strain and temperature as distributed along an optical fiber can include measuring Brillouin scattering in a core of the optical fiber disposed in a well, and measuring Brillouin scattering in another core of the optical fiber disposed in the well, the optical fiber cores being exposed to a same strain and temperature distribution in the well.
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2.发明公开
公开(公告)号：EP3175084A4
公开(公告)日：2018-03-28
申请号：EP15840559
申请日：2015-09-04
发明人： QUINTERO LUIS F
IPC分类号： E21B47/00 , E21B33/14 , E21B47/06 , E21B47/12 , G01V1/22 , G01V1/40 , G01V1/46 , G01V1/50 , G01V5/10 , G01V11/00 , G06F17/50
CPC分类号： E21B47/0005 , E21B33/14 , E21B47/00 , E21B47/065 , E21B47/123 , G01V1/226 , G01V1/46 , G01V1/50 , G01V5/10 , G01V5/101 , G01V5/102 , G01V11/00 , G01V99/005 , G01V2210/1299 , G01V2210/1429 , G06F17/5009 , G06F2217/16
摘要： A distance of a water flow path and a velocity of the water flow are calculated using data obtained from both a pulsed neutron sensor and distributed acoustic sensors. The two distance and velocity values are compared to obtain a first calculated distance and velocity. The distance of the water flow path and the velocity of the water flow are calculated using the Doppler data obtained from distributed Doppler sensors. The distance and velocity values are compared with the first calculated distance and first calculated velocity to obtain a second calculated distance and velocity values. The distance of the water flow path and the velocity of the water flow are calculated using temperature data obtained from distributed temperature sensors. The distance and velocity values are compared with the second calculated distance and velocity to determine a distance of a cement interface, and a velocity of a water flow therein.
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3.发明公开NOISE REMOVAL FOR DISTRIBUTED ACOUSTIC SENSING DATA 审中-公开RAUSCHBESEITIGUNGFÜRVERTEILTE AKUSTIKMESSDATEN
公开(公告)号：EP3143249A1
公开(公告)日：2017-03-22
申请号：EP15822748.8
申请日：2015-07-17
CPC分类号： G01V1/364 , G01H9/004 , G01V1/208 , G01V1/226 , G01V1/42 , G01V1/46 , G01V1/48 , G01V2210/1214 , G01V2210/1295 , G01V2210/1429 , G01V2210/161 , G01V2210/322 , G01V2210/3246 , G01V2210/3248 , G01V2210/34
摘要： An example system for noise removal in distributed acoustic sensing data may include a distributed acoustic sensing (DAS) data collection system and an information handling system coupled thereto. The information handling system may receive seismic information from the DAS data collection system. The seismic information may include seismic traces associated with a plurality of depths in the wellbore. The information handling system may also generate a noise pilot trace by stacking one or more of the seismic traces, and subtract the noise pilot trace from the seismic information received from the DAS data collection system.
摘要翻译： 在分布式声学传感数据中用于噪声去除的示例系统可以包括分布式声学感测（DAS）数据收集系统和与其耦合的信息处理系统。 信息处理系统可以从DAS数据收集系统接收地震信息。 地震信息可以包括与井眼中的多个深度相关联的地震迹线。 信息处理系统还可以通过堆叠地震迹线中的一个或多个并且从从DAS数据收集系统接收的地震信息中减去噪声导频迹线来产生噪声导频迹线。
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4.发明授权AN INTEGRITY MONITORING SYSTEM AND A METHOD OF MONITORING INTEGRITY OF A STATIONARY STRUCTURE 有权完整性监控系统及方法用于监控的固定结构的完整性
公开(公告)号：EP2635875B1
公开(公告)日：2017-02-22
申请号：EP11837602.9
申请日：2011-11-03
申请人： NKT Cables Group A/S , Energinet.dk
CPC分类号： G01N19/00 , G01H9/004 , G01M3/007 , G01M3/243 , G01M5/0025 , G01M5/0033 , G01M5/0066 , G01M7/00 , G01N29/4436 , G01V2210/1429
摘要： An integrity monitoring system for monitoring integrity of at least a part of a stationary structure includes a vibration sensor for sensing vibration as a function of time, a computer, transmitting means for transmitting vibration data from the vibration sensor to the computer, means for acquiring position as a function of time data of a movable object, such as a vessel, a vehicle or a digging tool. The movable object includes a transmitter transmitting the position as a function of time data to the computer when the movable object is within a selected distance to a monitoring site. The monitoring site includes the part of the stationary structure to be monitored and the vibration sensor is arranged to sense vibrations within the monitoring site. The computer includes hardware and software for comparing the vibration data with the position as a function of time data.
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公开(公告)号：EP2645132A2
公开(公告)日：2013-10-02
申请号：EP13161854.8
申请日：2013-03-29
发明人： Cotton, Julien , Bianchi, Thomas
IPC分类号： G01V1/28
CPC分类号： G01V1/308 , G01V1/28 , G01V2210/1299 , G01V2210/1429 , G01V2210/53 , G01V2210/612 , G01V2210/6122 , G01V2210/67
摘要： A method for processing seismic data acquired using the same seismic survey setup over long periods of time includes acquiring sets of seismic data using the same seismic survey setup over multiple days, the sets being gathered as repeated seismic data. The method further includes estimating a time-variable wavelet corresponding to unwanted waves, and determining a propagation of the time-variable wavelet, which propagation is assumed to be constant in time, by solving an inverse problem using the repeated seismic data and the estimated time-variable wavelet. The method also includes extracting signal data by subtracting a convolution of the estimated time-variable wavelet and the propagation from the repeated seismic data.
摘要翻译： 一种用于处理长时间使用相同的地震测量装置获取的地震数据的方法包括使用相同的地震勘测装置在多天内获取地震数据集，这些集合作为重复的地震数据收集。 该方法还包括估计对应于不想要的波的时变小波，并且通过使用重复的地震数据和估计时间来求解反问题来确定传播被假定为是恒定的时变小波的传播 变量小波。 该方法还包括通过从重复的地震数据中减去估计的时变小波和传播的卷积来提取信号数据。
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公开(公告)号：EP3403120A1
公开(公告)日：2018-11-21
申请号：EP16885290.3
申请日：2016-07-12
发明人： NGUYEN, Nam , ANG, Yi Yang , JACHMANN, Rebecca Corina , LU, Yinghui , JAGANNANTHAN, Srinivasan , TAWARE, Avinash Vinayak
IPC分类号： G01V1/50
CPC分类号： E21B47/101 , G01H17/00 , G01V1/40 , G01V2210/123 , G01V2210/1429 , G01V2210/43
摘要： Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.
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公开(公告)号：EP2836859B1
公开(公告)日：2018-08-22
申请号：EP12873932.3
申请日：2012-04-09
发明人： LI, Shuling , PURDY, Cary C.
IPC分类号： G01V1/48
CPC分类号： G01V1/48 , G01V1/50 , G01V2210/1429 , G01V2210/6222 , G01V2210/6244
摘要： In some embodiments, an apparatus and a system, as well as a method and an article, may operate to measure compressional wave velocities in a geological formation surrounding a first well, to provide measured compressional wave velocity data, and to subsequently determine corrected compressional wave velocities for the first well. These corrected compressional wave velocities for the first well may be determined using a combination of the measured compressional wave velocity data and corrected compressional wave velocity data associated with one or more second wells. Predicted pore pressure data for the first well may be subsequently generated, using the corrected compressional wave velocities for the first well. Additional apparatus, systems, and methods are described.
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公开(公告)号：EP3212886A4
公开(公告)日：2018-06-27
申请号：EP15855377
申请日：2015-09-28
申请人： BAKER HUGHES INC
发明人： BARRY ALEXANDER M , KU KARL KAI , MITCHELL IAN , JOHNSTON WILLIAM
CPC分类号： G01K11/3206 , G01H9/004 , G01L1/246 , G01V2210/1429
摘要： An apparatus for performing a measurement of a downhole property includes an optical fiber having a first section that has a first set of fiber Bragg gratings with a first resonant wavelength inscribed therein and a second section that has a second set of fiber Bragg gratings with a second resonant wavelength different from the first resonant wavelength inscribed therein. The second section is in series with the first section. An optical interrogator emits a swept-wavelength frequency domain light signal having varying wavelength amplitude modulation into the optical fiber, receives a frequency domain return light signal, and transforms the frequency domain return signal into a time domain to determine a resonant wavelength shift of each fiber Bragg grating and the corresponding location of each interrogated fiber Bragg grating. A processor converts the resonant wavelength shift of each interrogated fiber Bragg grating into the downhole property measurement.
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公开(公告)号：EP2976500A4
公开(公告)日：2016-10-19
申请号：EP14767564
申请日：2014-02-10
发明人： JAASKELAINEN MIKKO , MITCHELL IAN B
CPC分类号： G01L1/242 , E21B47/00 , G01H9/004 , G01K11/32 , G01K2011/322 , G01V8/16 , G01V2210/1429
摘要： A downhole optical sensing system can include an optical fiber positioned in the well, the optical fiber including multiple cores, and one of the cores having a Brillouin scattering coefficient which is different from another one of the cores. A method of sensing strain and temperature as distributed along an optical fiber can include measuring Brillouin scattering in a core of the optical fiber disposed in a well, and measuring Brillouin scattering in another core of the optical fiber disposed in the well, the optical fiber cores being exposed to a same strain and temperature distribution in the well.
摘要翻译： 井下光学感测系统可以包括位于井中的光纤，光纤包括多个芯，并且其中一个芯具有不同于另一芯的布里渊散射系数。 感测沿着光纤分布的应变和温度的方法可以包括测量布置在阱中的光纤的芯中的布里渊散射，以及测量布置在阱中的光纤的另一芯中的布里渊散射，光纤芯 在井中暴露于相同的应变和温度分布。
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10.发明公开Downhole seismic sensor with filler fluid and method of using same 审中-公开地震学家Bohrlochsensor mitFüllflüssigkeitund Verfahren zur Verwendung davon
公开(公告)号：EP2818895A2
公开(公告)日：2014-12-31
申请号：EP14174659.4
申请日：2014-06-27
申请人： Services Petroliers Schlumberger , Schlumberger Holdings Limited , SCHLUMBERGER TECHNOLOGY B.V.
发明人： Ikegami, Toru
CPC分类号： E21B47/01 , G01V1/182 , G01V1/184 , G01V1/40 , G01V1/523 , G01V3/26 , G01V2200/16 , G01V2210/1429
摘要： A seismic sensor for a downhole tool positionable in a wellbore penetrating a subterranean formation. The seismic sensor includes a sensor housing, a bobbin supported in the sensor housing along an axis thereof, at least one coil wound about the bobbin (the coil movably supportable within the sensor housing by at least one spring), at least one magnet positionable about the bobbin to generate a magnetic field with the at least one coil whereby seismic vibrations are detectable, and a filler fluid disposed in the sensor housing to buoy the at least one coil whereby gravitational effects may be neutralized.
摘要翻译： 用于井下工具的地震传感器，其可定位在穿透地下地层的井眼中。 所述地震传感器包括传感器外壳，沿其轴线支撑在所述传感器壳体中的线轴，围绕所述线轴缠绕的至少一个线圈（所述线圈可由所述至少一个弹簧可移动地支撑在所述传感器壳体内），至少一个磁体可定位在约 所述线轴与所述至少一个线圈产生磁场，从而可以检测地震振动;以及填充流体，布置在所述传感器壳体中以浮起所述至少一个线圈，从而可以中和重力作用。
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