公开(公告)号：US20150331122A1

公开(公告)日：2015-11-19

申请号：US14280086

申请日：2014-05-16

Applicant: Schlumberger Technology Corporation

Inventor： Michael David Prange ,  Sandip Bose ,  Ousmane Kodio ,  Hugues Djikpesse

IPC: G01V1/30

CPC classification number: G01V1/305 ,  G01V1/42 ,  G01V2210/1234 ,  G01V2210/41 ,  G01V2210/667 ,  G01V2210/70

Abstract: A method, a system, and a computer readable medium for analyzing a wavelet within a seismic signal are described herein. The method includes receiving a seismic signal from a seismic receiver, such as a geophone, and using a Bayesian probability method to determine an associated arrival time for the wavelet and determine an uncertainty for the arrival time of the wavelet. The method has application in hydraulic fracturing monitoring operations and in spatially mapping fractures.

Abstract translation: 本文描述了用于分析地震信号内的小波的方法，系统和计算机可读介质。 该方法包括从诸如地震检波器的地震接收机接收地震信号，并使用贝叶斯概率法确定小波的相关到达时间，并确定小波到达时间的不确定性。 该方法应用于水力压裂监测作业和空间定位裂缝。

公开(公告)号：US20150218930A1

公开(公告)日：2015-08-06

申请号：US14612101

申请日：2015-02-02

Applicant: Schlumberger Technology Corporation

Inventor： Smaine Zeroug ,  Jiaqi Yang ,  Sandip Bose

IPC: E21B47/00 ,  G01V1/48

CPC classification number: G01V1/50 ,  E21B47/0005 ,  E21B47/14

Abstract: Embodiments of the disclosure may include systems and methods for estimating an acoustic property of an annulus in a cement evaluation system. In one embodiment, a casing arrival signal is acquired at acoustic receivers a cement evaluation tool. A spectral amplitude ratio is calculated based on the casing arrival signal. The spectral amplitude ratio is scanned to detect and identify discontinuities. If discontinuities are detected, the frequency at the discontinuity may be used to estimate a wavespeed of the annulus. If discontinuities are not detected, attenuation dispersions are calculated and estimated, and an estimated wavespeed and parameters are updated until the calculated and estimated attenuation dispersions match.

Abstract translation: 本公开的实施例可以包括用于估计水泥评估系统中的环的声学特性的系统和方法。 在一个实施例中，在声学接收器处获取水泥评估工具的套管到达信号。 基于壳体到达信号计算频谱振幅比。 扫描光谱振幅比以检测和识别不连续性。 如果检测到不连续性，则可以使用不连续处的频率来估计环带的波速。 如果不检测到不连续性，则计算和估计衰减分散，并且估计的波速和参数被更新，直到计算和估计的衰减色散匹配。

公开(公告)号：US20140169130A1

公开(公告)日：2014-06-19

申请号：US13712971

申请日：2012-12-13

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shuchin Aeron ,  Sandip Bose ,  Henri-Pierre Valero

IPC: G01V1/48

CPC classification number: G06F17/148 ,  G01V1/364 ,  G01V2210/46

Abstract: Methods and apparatus for waveform processing are disclosed. An example method includes representing waveform data using space time propagators in the Discrete Radon Transform Domain. The method also includes identifying signals within the represented waveform data using a Sparisty Penalized Transform.

Abstract translation: 公开了用于波形处理的方法和装置。 示例性方法包括使用离散氡变换域中的空间时间传播器来表示波形数据。 该方法还包括使用Sparisty Penalized变换来识别所表示的波形数据内的信号。

公开(公告)号：US20130238248A1

公开(公告)日：2013-09-12

申请号：US13712985

申请日：2012-12-13

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shuchin Aeron ,  Sandip Bose ,  Henri-Pierre Valero

IPC: G01V1/28

CPC classification number: G01V1/28 ,  G01V1/36 ,  G01V1/364 ,  G01V2210/32 ,  G01V2210/324

Abstract: Methods and apparatus for waveform processing are disclosed. An example method includes determining shrinkage estimators in a Discrete Radon transform domain based on semblance of waveform data and de-noising the waveform data using a processor and the shrinkage estimators to enable the identification of weak signals in the waveform data.

Abstract translation: 公开了用于波形处理的方法和装置。 示例性方法包括基于波形数据的相似性确定离散氡变换域中的收缩估计器，并使用处理器和收缩估计器对波形数据进行去噪，以便能够识别波形数据中的弱信号。