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61. 发明专利

AU2008299780A2 3D deghosting of multicomponent or over / under streamer recordings using cross-line wavenumber spectra of hydrophone data 未知
公开(公告)号：AU2008299780A2
公开(公告)日：2011-02-03
申请号：AU2008299780
申请日：2008-08-01
申请人： GECO TECHNOLOGY BV
发明人： ROBERTSSON JOHAN O A , VASSALLO MASSIMILIANO , OZBEK ALI , MANEN DIRK-JAN VAN
IPC分类号： G01V1/38
摘要： A technique includes obtaining pressure data that was acquired by seismic sensors towed as part of a three-dimensional spread of streamers and obtaining particle motion data, which are indicative of particle motion at locations of the sensors. The technique includes estimating cross-line spectra of the pressure data based at least in part on the pressure data, and the technique includes deghosting the particle motion data based at least in part on the estimated cross-line spectra.

62. 发明专利

NO20093403L 未知
公开(公告)号：NO20093403L
公开(公告)日：2010-03-10
申请号：NO20093403
申请日：2009-11-24
申请人： GECO TECHNOLOGY BV
发明人： OZBEK ALI , OZDEMIR AHMET KEMAL
IPC分类号： G01V1/30

63. 发明专利

MX2009011593A METODO PARA SEPARACION OPTIMA DE CAMPO DE ONDA. 未知
公开(公告)号：MX2009011593A
公开(公告)日：2010-01-14
申请号：MX2009011593
申请日：2008-03-31
申请人： GECO TECHNOLOGY BV
发明人： OZBEK ALI , OZDEMIR AHMET KEMAL
IPC分类号： G01V1/28
摘要： Una técnica para descomponer un campo de onda registrado representado en un conjunto de centros de información sísmica marina, de componentes múltiples en torno a un método que incluye: estimar las estadísticas de los términos de ruido en cada una de un grupo predeterminado de mediciones sísmicas en un conjunto de datos sísmicos adquiridos en una supervisión marina; modelar la propagación física de un campo de onda registrado representado en el conjunto de datos sísmicos a partir de la estadística estimada; y estimar un componente direccional del campo de onda registrado a partir del modelo de propagación física que minimiza el error con relación a las mediciones sísmicas.

64. 发明专利

GB2458642A Noise attenuation of seismic data 未知
公开(公告)号：GB2458642A
公开(公告)日：2009-09-30
申请号：GB0805341
申请日：2008-03-25
申请人： GECO TECHNOLOGY BV
发明人： OZBEK ALI , FORMAN PETER
IPC分类号： G01V1/28 , G01V1/30 , G01V1/36 , G01V1/38
摘要： The present invention relates to a method of filtering seismic data for noise attenuation. An embodiment of the present invention provides a method of processing seismic data in which the seismic data is transformed into an f-x domain (frequency space domain) using a discrete Fourier transform and is then filtered at each discrete frequency using an infinite impulse response (IIR) filter, such as a Butterworth or Chebychev filter. Initial conditions for the filter are set to minimize transients before applying the filter in both a forwards or backwards direction. Coefficients can be set so that the input and output functions of the filter are the same. Noise attenuation methods and methods for choosing initial step functions can be used when setting initial conditions. Preferably, extrapolated data is added before application of the filter.

65. 发明专利

NO20092344A 未知
公开(公告)号：NO20092344A
公开(公告)日：2009-08-28
申请号：NO20092344
申请日：2009-06-18
申请人： GECO TECHNOLOGY BV
发明人： OZBEK ALI , OZDEMIR AHMET KEMAL
IPC分类号： G01V1/36
CPC分类号： G01V1/36

66. 发明专利

AU2007336115A1 Regularisation of irregularly sampled seismic data 未知
公开(公告)号：AU2007336115A1
公开(公告)日：2008-06-26
申请号：AU2007336115
申请日：2007-10-15
申请人： GECO TECHNOLOGY BV
发明人： OZBEK ALI , OZDEMIR AHMED KEMAL
IPC分类号： G01V1/36

67. 发明专利

CA3006953A1 LAND SEISMIC SENSOR SPREAD WITH ADJACENT MULTICOMPONENT SEISMIC SENSOR PAIRS ON AVERAGE AT LEAST TWENTY METERS APART 未知
公开(公告)号：CA3006953A1
公开(公告)日：2017-06-08
申请号：CA3006953
申请日：2016-12-01
申请人： SCHLUMBERGER CA LTD
发明人： EL ALLOUCHE NIHED , OZBEK ALI
IPC分类号： G01V1/00 , G01V1/16 , G01V1/28
摘要： A system and method for multicomponent noise attenuation of a seismic wavefield is provided. Embodiments may include receiving, at one or more computing devices, seismic data associated with a seismic wavefield over at least one channel of a plurality of channels from one or more seismic sensor stations. Embodiments may further include identifying a noise component on the at least one channel of the plurality of channels and attenuating the noise component on the at least one channel of the plurality of channels based upon, at least in part, the seismic data received from the one or more seismic sensor stations.

68. 发明专利

CA2332374A1 ADAPTIVE SEISMIC NOISE AND INTERFERENCE ATTENUATION METHOD 未知
公开(公告)号：CA2332374A1
公开(公告)日：1999-11-25
申请号：CA2332374
申请日：1999-05-18
申请人： SCHLUMBERGER CA LTD
发明人： OZBEK ALI
IPC分类号： G01V1/36
摘要： A method relating to filtering coherent noise and interference from seismic data by constrained adaptive beamforming is described using a constraint design methodology which allows the imposition of an arbitrary predesigned quiescent response on the beamformer. The method also makes sure that the beamformer response in selected regions of the frequency-wavenumber space is entirely controlled by this quiescent response, hence ensuring signal preservation and robustness to perturbations. Built-in regularization brings an additional degree of robustness. Seismic signals with arbitrary spectral content in the frequency-wavenumber domain are preserved, while coherent noi se and interference that is temporally and spatially nonstationary is adaptivel y filtered. The approach is applicable to attenuation of all types of coherent noise in seismic data including swell-noise, bulge-wave noise, ground-roll, air wave, seismic vessel and rig interference, etc. It is applicable to both linear or areal arrays.

69. 发明专利

CA2332374C ADAPTIVE SEISMIC NOISE AND INTERFERENCE ATTENUATION METHOD 未知
公开(公告)号：CA2332374C
公开(公告)日：2007-10-09
申请号：CA2332374
申请日：1999-05-18
申请人： SCHLUMBERGER CA LTD
发明人： OZBEK ALI
IPC分类号： G01V1/36
摘要： A method relating to filtering coherent noise and interference from seismic data by constrained adaptive beamforming is described using a constraint design methodology which allows the imposition of an arbitrary predesigned quiescent response on the beamformer. The method also makes sure that the beamformer response in selected regions of t he frequency-wavenumber space is entirely controlled by this quiescent response, hence ensuring signal preservation and robustness to perturbations. Built-in regularization brings an additional degree of robustness. Seismic signals with arbitrary spectral content in the frequency-wavenumber domain are preserved, while coherent noise and interference that is temporally and spatially nonstationary is adaptivel y filtered. The approach is applicable to attenuation of all types of coherent noise in seismic data including swell-noise, bulge-wave noise, ground-roll, air wave, seismic vessel and rig interference, etc. It is applicable to both linear or areal arrays.

70. 发明专利

CA2358512C METHOD OF ATTENUATING NOISE IN THREE DIMENSIONAL SEISMIC DATA USING A PROJECTION FILTER 未知
公开(公告)号：CA2358512C
公开(公告)日：2007-06-12
申请号：CA2358512
申请日：2000-01-12
申请人： SCHLUMBERGER CA LTD
发明人： OZBEK ALI , OZDEMIR AHMET KEMAL , ZEROUK KAMIL , FERBER RALF
IPC分类号： G01V1/36
摘要： A method of attenuating noise in three dimensional seismic data using a projection algorithm is disclosed. A frequency-space-space ("f-xy") projection algorithm is used which is a generalization of the f-x projection algorithm. The predictability of the seismic signals in the f-xy domain constitutes the basis of the algorithm. Specifically it is demonstrated that if the seismic events are planar in the t-xy domain, then in the f-xy domain they consist of predictable signals in the xy-plane for each frequency f. A crucial step of the 2-D spectral factorization is achieved through the helical coordinate transformation. In addition to the disclosed general algorithm for arbitrary coherent noise, a specialized algorithm for random noise is disclosed. It has been found that the disclosed projection algorithm is effective even in extreme cases of poor signal to noise ratio. The algorithm is also signal preserving when the predictability assumptions hold.

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