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1. 发明公开

EP2960679A3 COMPUTING ROTATION DATA USING A GRADIENT OF TRANSLATIONAL DATA 有权
公开(公告)号：EP2960679A3
公开(公告)日：2016-01-27
申请号：EP15177756.2
申请日：2014-01-30
申请人： WesternGeco, L.L.C. , WesternGeco Seismic Holdings Limited
发明人： Kitchenside, Philip , Goujon, Nicolas , Edme, Pascal , Kashubin, Artem , Muijzert, Everhard
IPC分类号： G01V1/18 , G01V1/28
CPC分类号： G01V1/284 , G01V1/166 , G01V1/184
摘要： Translational data in a first direction is measured by particle motion sensors contained in an elongated housing of a sensor device provided at an earth surface. The particle motion sensors are spaced apart along a second, different direction along a longitudinal axis of the elongated housing. Rotation data around a third direction is computed based at least in part on computing a gradient of the translational data with respect to the second direction.

2. 发明公开

EP2681590A2 DETERMINING AN INDICATION OF WAVEFIELD VELOCITY 审中-公开
标题翻译：确定波场的显示速度
公开(公告)号：EP2681590A2
公开(公告)日：2014-01-08
申请号：EP12768533.7
申请日：2012-03-30
申请人： Geco Technology B.V. , WesternGeco, L.L.C.
发明人： EDME, Pascal , MUYZERT, Everhard Johan
IPC分类号： G01V1/24 , G01V1/28 , G01V1/16
CPC分类号： G01V1/303 , G01V1/162 , G01V1/28 , G01V1/36
摘要： Translational data acquired by at least one translational survey sensor is received, and rotation data is received. A representation of wavefield velocity based on the translational data and the rotation data is determined

3. 发明公开

EP2622375A2 DETERMINING SEA CONDITIONS IN MARINE SEISMIC SPREADS 审中-公开
标题翻译：水分状况地震之后扩散确定
公开(公告)号：EP2622375A2
公开(公告)日：2013-08-07
申请号：EP11829747.2
申请日：2011-09-19
申请人： Geco Technology B.V. , WesternGeco, L.L.C.
发明人： FRIVIK, Svein, Arne , GOUJON, Nicolas
IPC分类号： G01V1/38 , G01V1/28
CPC分类号： G01V1/3835
摘要： According to one or more aspects of the invention, a marine seismic survey method comprises towing at least two streamers below a sea surface forming a survey spread, each streamer comprising a survey sensor and a profiler; and at each profiler, emitting an acoustic signal; recording an echo of the emitted signal at the profiler; and determining a parameter from the recorded echo, the parameter comprising at least one selected from the group of a distance between the profiler and the sea surface, a water current vector and a sea surface slope.

4. 发明公开

EP2622373A2 MARINE VIBRATOR WITH IMPROVED SEAL 审中-公开
标题翻译：具有改进的密封船SOUND椅
公开(公告)号：EP2622373A2
公开(公告)日：2013-08-07
申请号：EP11829745.6
申请日：2011-09-19
申请人： Geco Technology B.V. , WesternGeco, L.L.C.
发明人： BARBOUR, Kamal , COSTE, Emmanuel , HOWLID, Martin
IPC分类号： G01V1/38 , G01V1/04 , G01V1/133 , G01V1/155
CPC分类号： G01V1/135 , G01V1/38
摘要： A marine vibrator with improved seal is described. The marine vibrator includes a housing and piston within the housing for generating vibratory signals. The improved seal is comprised of a two-stage seal having a first seal disposed adjacent the water interface and a second seal disposed away from the water interface, thus improving the reliability of the marine vibrator.

5. 发明公开

EP1723443A1 SEISMIC CABLE POSITIONING USING COUPLED INERTIAL SYSTEM UNITS 审中-公开
标题翻译： POSITIONING地震电缆USING A耦合惯性系统UNIT
公开(公告)号：EP1723443A1
公开(公告)日：2006-11-22
申请号：EP04706476.1
申请日：2004-01-29
申请人： WesternGeco, L.L.C.
发明人： HUSOM, Vidar, A. , WELKER, Kenneth, E.
IPC分类号： G01V1/38
CPC分类号： G01V1/3835 , G01V1/20
摘要： An apparatus and a method of its use in a marine seismic survey are disclosed. The apparatus includes a seismic survey object (106) and an inertial measurement device (130) coupled to the seismic survey object (106). The method includes taking inertial measurements of the movement of selected points on a seismic spread relative to at least one known point, and applying the inertial measurements to the known point to determine the positions of the selected points.

6. 发明公开

EP1660914A1 METHOD FOR ATTENUATING WATER LAYER MULTIPLES 有权
标题翻译：阻尼对水层的方法导致在多地震记录
公开(公告)号：EP1660914A1
公开(公告)日：2006-05-31
申请号：EP04780450.5
申请日：2004-08-09
申请人： WesternGeco, L.L.C.
发明人： MOORE, Ian
IPC分类号： G01V1/36
CPC分类号： G01V1/364 , G01V2210/56 , Y02A90/36
摘要： A method for attenuating water layer multiples from a gather of seismic data traces. The method includes predicting a plurality of receiver side water layer multiples in the gather of seismic data traces using a convolutional operator derived from a water layer model, adaptively subtracting the receiver side water layer multiples from the gather of seismic data traces, predicting a plurality of source side water layer multiples using the convolutional operator derived from the water layer model, and adaptively subtracting the receiver side water layer multiples and the source side water layer multiples from the gather of seismic data traces to generate a plurality of primaries in the gather of seismic data traces.

7. 发明公开

EP1478946A1 A METHOD FOR REMOVING NOISE FROM SEISMIC DATA 审中-公开
标题翻译：方法地震数据降噪
公开(公告)号：EP1478946A1
公开(公告)日：2004-11-24
申请号：EP03709227.7
申请日：2003-02-21
申请人： WesternGeco, L.L.C.
发明人： MOERIG, Rainer , BARR, Frederick, J.
IPC分类号： G01V1/37
CPC分类号： G01V1/37 , G01V2210/32
摘要： The present invention is a method for processing seismic data comprising acquiring seismic data using a sweep sequence including a plurality of cascaded sweep segments. The seismic data include a plurality of data segments and a listen time. The listen is combined with an initial data segment. The seismic data segments are phase shifted to a phase of a target data segment to be denoised (i.e. removal of ambient, harmonic and coherent noise). A difference between the target data segment and the remaining data segments is determined. If the determined difference exceeds a predetermined threshold, data in the target data segment is replaced with data derived from the remaining data segments. The data segments may be stacked to form a new target data segment. The listen time is extracted from the initial data segment.

8. 发明公开

EP1451610A1 DYNAMIC WATER VELOCITY CORRECTION 有权转让
标题翻译：动态水速度校正
公开(公告)号：EP1451610A1
公开(公告)日：2004-09-01
申请号：EP02801775.4
申请日：2002-10-17
申请人： WesternGeco, L.L.C.
发明人： MACKAY, Scott
IPC分类号： G01V1/36 , G01V1/38
CPC分类号： G01V1/38 , G01V1/362 , G01V2210/52
摘要： This invention removes the effects of variable water velocity by calculating and applying corrections that map the seismic data to an ideal case of constant water velocity. All of the corrections assume, from a separate analysis step, that the vertical (zero-offset) timing errors induced by the water-velocity variations and that the zero-offset water bottom times are available. Equivalently, the water velocities are assumed known. The timing errors and water velocities are related. The zero-offset water-bottom times are also assumed available. From this information, and an arbitrarily-defined 'ideal' water velocity, it is possible to calculate an observed (actual) water velocity relative to the 'ideal' case. The only additional information needed is the angle of the ray path through the water layer. The angle may be calculated directly from normal moveout velocities derived from conventional analysis of the seismic data, and the information above. A time-dependent and offset-dependent correction may be derived for each sample of the seismic data prior to normal moveout correction.

9. 发明公开

EP1327162A2 METHOD OF USING CASCADED SWEEPS FOR SOURCE CODING AND HARMONIC CANCELLATION 审中-公开
标题翻译：方法CASCADE震源信号的源代码和异径谐波使用
公开(公告)号：EP1327162A2
公开(公告)日：2003-07-16
申请号：EP01979847.9
申请日：2001-10-17
申请人： WesternGeco, L.L.C.
发明人： MOERIG, Rainer , BARR, Frederick, J. , NYLAND, David, Lee , SITTON, Gary, Arthur
IPC分类号： G01V1/00 , G01V1/37
CPC分类号： G01V1/005 , G01V1/375 , G01V2210/3246
摘要： A method of seismic surveying using one or more vibrational seismic energy sources activated by sweep signals. The highest order harmonic that has sufficient strength to cause significant harmonic distortion of a sweep segment is determined. A number of sweep segments in excess of the number of sources is selected. Initial phase angles are selected for each sweep segment of each seismic energy source so that substantially all harmonics up to and including the highest order harmonic are suppressed. Using cascaded sweeps, seismic data are acquired and processed to substantially attenuate harmonics upto the selected order.

10. 发明授权

EP2936209B1 MEMS-BASED ROTATION SENSOR FOR SEISMIC APPLICATIONS AND SENSOR UNITS HAVING SAME 有权
公开(公告)号：EP2936209B1
公开(公告)日：2018-11-28
申请号：EP13865987.5
申请日：2013-12-16
申请人： WesternGeco, L.L.C. , WesternGeco Seismic Holdings Limited
发明人： PROJETTI, Maxime , VANCAUWENBERGHE, Olivier , GOUJON, Nicolas , PAULSON, Hans
IPC分类号： G01V1/38 , G01V1/24 , G01V1/18
CPC分类号： G01V1/164 , G01C19/5712 , G01P15/125 , G01V1/003 , G01V1/18 , G01V1/189 , G01V1/38 , G01V1/3808
摘要： The present disclosure is directed to a MEMS-based rotation sensor for use in seismic data acquisition and sensor units having same. The MEMS-based rotation sensor includes a substrate, an anchor disposed on the substrate and a proof mass coupled to the anchor via a plurality of flexural springs. The proof mass has a first electrode coupled to and extending therefrom. A second electrode is fixed to the substrate, and one of the first and second electrodes is configured to receive an actuation signal, and another of the first and second electrodes is configured to generate an electrical signal having an amplitude corresponding with a degree of angular movement of the first electrode relative to the second electrode. The MEMS-based rotation sensor further includes closed loop circuitry configured to receive the electrical signal and provide the actuation signal. Related methods for using the MEMS-based rotation sensor in seismic data acquisition are also described.

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