公开(公告)号：US09001618B2

公开(公告)日：2015-04-07

申请号：US11999396

申请日：2007-12-05

Applicant: Stian Hegna

Inventor： Stian Hegna

IPC: G01V1/38 ,  G01V1/36

CPC classification number: G01V1/3808 ,  G01V1/364 ,  G01V2210/21 ,  G01V2210/324

Abstract: The invention comprises a system for attenuating noise in seismic signals detected in a marine seismic streamer. In a particular implementation the system may comprise seismic detectors positioned in the streamer and interconnected to form a plurality of wavenumber filters, with each of the wavenumber filters attenuating signals within a range of wavenumbers. The output signals from the wavenumber filters are operatively connected to a plurality of band-pass filters, and the output signals of the band-pass filters are combined by summation means. The range of wavenumbers attenuated by the wavenumber filters and the passbands of the band-pass filters are selected so that in the output signal of the summation means, signals within a selected frequency range of interest propagating along the cable within a selected velocity range are attenuated and signals within the selected frequency range of interest having a velocity range outside the selected velocity range are preserved.

公开(公告)号：US20130092469A1

公开(公告)日：2013-04-18

申请号：US13271769

申请日：2011-10-12

Applicant: Gregory Ernest PARKES ,  Stian Hegna

Inventor： Gregory Ernest PARKES ,  Stian Hegna

IPC: G01V1/133

CPC classification number: G01V1/133 ,  G01V2210/1293

Abstract: A disclosed seismic source assembly includes a body having a cavity and a seismic source positioned in the cavity. The cavity is in fluid communication with the water via an aperture oriented in a first direction. One or more surfaces of the body define a water contact significantly larger than an area of the aperture and on a side opposite the first direction. A described method includes forming a source assembly by: providing a cavity having an aperture for transmitting seismic waves; rigidly attaching a base to a side of the cavity opposite the aperture, where a transverse area of the base is significantly larger than an area of the aperture; and positioning a seismic source in the cavity. The source assembly is submerged in the water and triggered.

Abstract translation: 所公开的地震源组件包括具有腔体和位于空腔中的地震源的主体。 空腔通过沿第一方向定向的孔与水流体连通。 本体的一个或多个表面限定明显大于孔的面积和与第一方向相反的一侧的水接触。 所描述的方法包括：通过以下方式来形成源组件：提供具有用于传输地震波的孔的空腔; 将基部刚性地附接到与孔相对的腔的一侧，其中基部的横向面积显着大于孔的面积; 并将地震源定位在空腔中。 源装置淹没在水中并触发。

公开(公告)号：US20120259553A1

公开(公告)日：2012-10-11

申请号：US13066036

申请日：2011-04-05

Applicant: Gregory Ernest Parkes ,  Stian Hegna ,  Anthony James Day

Inventor： Gregory Ernest Parkes ,  Stian Hegna ,  Anthony James Day

IPC: G01V1/36 ,  G06F19/00 ,  G01V1/38

CPC classification number: G01V1/364 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/22 ,  G01V2210/23 ,  G01V2210/56

Abstract: Recorded seismic data are represented as a convolution of operators representing a reflectivity series of the earth and a seismic wavelet. The recorded seismic wavelet is represented as a convolution of operators representing a receiver ghost, a source ghost, a ghost-free source system response, an earth filter response, and a receiver system response. The operator representing the receiver ghost is removed from the convolution representing the seismic wavelet. The operator representing the source ghost is removed from the convolution representing the seismic wavelet. The operator representing the ghost-free source response is removed from the convolution representing the seismic wavelet. The operator representing the earth filter response is removed from the convolution representing the seismic wavelet. The operator representing the seismic wavelet is removed from the convolution representing the recorded seismic data.

Abstract translation: 记录的地震数据被表示为表示地球和地震小波的反射系列的运算符的卷积。 记录的地震小波被表示为代表接收机重影，源幽灵，无重影源系统响应，地球滤波器响应和接收机系统响应的运算符的卷积。 代表接收机重影的算子从表示地震小波的卷积中去除。 代表源幽灵的算子从表示地震小波的卷积中去除。 表示无重影源响应的运算符从代表地震小波的卷积中去除。 表示地球滤波器响应的算子从表示地震小波的卷积中去除。 代表地震小波的算子从表示记录的地震数据的卷积中去除。

公开(公告)号：US20120033526A1

公开(公告)日：2012-02-09

申请号：US12806098

申请日：2010-08-05

Applicant: STIAN HEGNA ,  GREGORY ERNEST PARKES

Inventor： STIAN HEGNA ,  GREGORY ERNEST PARKES

IPC: G01V1/38

CPC classification number: G01V1/364 ,  G01V1/005 ,  G01V1/3808 ,  G01V2210/21 ,  G01V2210/56

Abstract: Seismic data are acquired by actuating a first source at a first time and one or more additional seismic sources each with their own characteristic times with respect to a time of signal recording, the sources substantially collocated and at different depths. A first wavefield is determined that would occur if the first source were actuated at a selected time with respect to an initiation time of the recordings and being time adjusted for the water depth. One or more additional wavefields are determined that would occur if the one or more additional sources were each actuated at said selected time with respect to said initiation time, and being time adjusted for water depths of the one or more additional sources. The first wavefield and the one or more additional wavefields are combined to determine a deghosted source wavefield corresponding to actuation of a single seismic energy source.

Abstract translation: 地震数据是通过在第一时间启动第一源和一个或多个额外的地震源而获得的，每个地震源相对于信号记录的时间具有其自己的特征时间，源基本并置并且处于不同的深度。 如果在相对于记录的开始时间的选定时间启动第一源并且对于水深进行时间调整，则将确定发生第一波场。 如果一个或多个附加源在相对于所述启动时间的所选择的时间被启动，并且对于一个或多个附加源的水深进行时间调整，则确定出现一个或多个另外的波场。 组合第一波场和一个或多个附加波场以确定对应于单个地震能量源的致动的反虚影源波场。

公开(公告)号：US20120026829A1

公开(公告)日：2012-02-02

申请号：US12804837

申请日：2010-07-30

Applicant: Stian Hegna

Inventor： Stian Hegna

IPC: G01V1/28 ,  G01V1/38

CPC classification number: G01V1/364

Abstract: Three-axis velocity data, obtained along with pressure data in a marine seismic survey, are rotated to a ray direction. Plane wave decomposition is applied in the ray direction to the rotated velocity data. The pressure data and the velocity data are combined to generate at least one of up-going and down-going wave fields. The at least one of up-going and down-going wave fields are used in a time-space domain to image the earth's subsurface.

Abstract translation: 与海洋地震勘测中的压力数据一起获得的三轴速度数据旋转到射线方向。 在光线方向上对旋转的速度数据进行平面波分解。 压力数据和速度数据被组合以产生上行和下行波场中的至少一个。 在时空域中使用上下波场中的至少一个来对地球的地下成像。

公开(公告)号：US20120002502A1

公开(公告)日：2012-01-05

申请号：US12803730

申请日：2010-07-02

Applicant: Øyvind Hillesund ,  Stian Hegna

Inventor： Øyvind Hillesund ,  Stian Hegna

IPC: G01V1/38

CPC classification number: G01V1/3826 ,  G01V1/3808

Abstract: In a first embodiment the invention comprises a method for gathering geophysical data, including towing geophysical data gathering equipment behind a survey vessel in a body of water, said equipment including an array of sensor streamers extending behind said vessel, and determining a geodetic location of a streamer steering reference point at a forward end of the sensor streamers and a reference direction. At least one sensor streamer included in said array of sensor streamers is laterally deflected in response to the determined geodetic location of said streamer steering reference point and the determined reference direction.

Abstract translation: 在第一实施例中，本发明包括一种用于收集地球物理数据的方法，包括在水体中拖动测量船后面的地球物理数据采集设备，所述设备包括延伸在所述船舶后面的传感器拖缆阵列，以及确定一个大地测量位置 传感器拖缆前端的拖缆转向参考点和参考方向。 响应于所确定的所述拖缆转向参考点的大地测量位置和确定的参考方向，包括在所述传感器拖缆阵列中的至少一个传感器拖缆被横向偏转。

公开(公告)号：US20100165792A1

公开(公告)日：2010-07-01

申请号：US12317644

申请日：2008-12-26

Applicant: Andre Stenzel ,  Qyvind Hillesund ,  Nils Lunde ,  Stian Hegna

Inventor： Andre Stenzel ,  Qyvind Hillesund ,  Nils Lunde ,  Stian Hegna

IPC: G01V1/20 ,  G01V1/38 ,  H04R1/44

CPC classification number: G01V1/201

Abstract: A seismic streamer includes at least one elongated strength member. The seismic streamer further includes a substantially rigid sensor holder coupled to the strength member and fixed in position relative to the strength member. The streamer includes at least one particle motion sensor coupled to the sensor holder and fixed in position relative to the sensor holder.

Abstract translation: 地震拖缆包括至少一个细长的强度构件。 地震拖缆还包括联接到强度构件并相对于强度构件固定就位的基本刚性的传感器保持器。 拖缆包括耦合到传感器保持器并相对于传感器保持器固定在适当位置的至少一个颗粒运动传感器。

公开(公告)号：US07518953B2

公开(公告)日：2009-04-14

申请号：US11655667

申请日：2007-01-19

Applicant: Stian Hegna ,  Anthony James Day ,  Gregory Ernest Parkes

Inventor： Stian Hegna ,  Anthony James Day ,  Gregory Ernest Parkes

IPC: G01V1/02 ,  G01V1/137

CPC classification number: G01V1/38 ,  G01V1/137 ,  G01V1/3861 ,  G01V13/00 ,  G01V2210/14

Abstract: A method for determining a fault in a seismic air gun includes comparing a near field seismic signal measured during operation of the air gun to a reference near field signal and determining the existence of a fault in the air gun when a difference between the measured near field signal and the reference near field signal exceeds a selected threshold.

Abstract translation: 一种用于确定地震气枪中的故障的方法包括将在气枪的操作期间测量的近场地震信号与参考近场信号进行比较，并且当测量的近场之间的差异确定气枪中的故障的存在 信号和参考近场信号超过选定的阈值。

公开(公告)号：US10241218B2

公开(公告)日：2019-03-26

申请号：US13483327

申请日：2012-05-30

Applicant: Stian Hegna ,  Fabien Julliard

Inventor： Stian Hegna ,  Fabien Julliard

IPC: G06F17/50 ,  G01V1/13 ,  G01V1/00

Abstract: Methods and systems for computing notional source signatures from modeled notional signatures and measured near-field signatures are described. Modeled near-field signatures are calculated from the modeled notional signatures. Low weights are assigned to parts of a source pressure wavefield spectrum where signatures are less reliable and higher weights are assigned to parts of the source pressure wavefield spectrum where signatures are more reliable. The part of the spectrum where both sets of signatures are reliable can be used for quality control and for comparing the measured near-field signatures to modeled near-field signatures. When there are uncertainties in the input parameters to the modeling, the input parameters can be scaled to minimize the differences between measured and modeled near-field signatures. Resultant near-field signatures are computed by a weighted summation of the modeled and measured near-field signatures, and notional source signatures are calculated from the resultant near-field signatures.

公开(公告)号：US09442209B2

公开(公告)日：2016-09-13

申请号：US13545609

申请日：2012-07-10

Applicant: Walter Söllner ,  Okwudili Orji ,  Stian Hegna

Inventor： Walter Söllner ,  Okwudili Orji ,  Stian Hegna

IPC: G01V1/38 ,  G01V1/36

CPC classification number: G01V1/364 ,  G01V2210/56

Abstract: Computational methods and systems for deghosting marine seismic streamer data are described. In particular, an exploration-seismology vessel tows a number of streamers that form a data acquisition surface located beneath a free surface. The methods computationally deghost or substantially remove receiver ghost signals from seismic data recorded by steamer receivers. The deghosting methods include low frequency compensation to recover vertical velocity wavefield information that is typically lost due to a low signal-to-noise ratio over a low frequency range independent of the free surface conditions or the shape of the data acquisition surface.

Abstract translation: 描述了用于海洋地震拖缆数据消除重影的计算方法和系统。 特别地，探测地震学船只牵引形成位于自由表面下方的数据采集表面的多个拖缆。 该方法计算地消除重影或基本上从由火轮接收器记录的地震数据中去除接收机重影信号。 去虚反射方法包括低频补偿以恢复垂直速度波场信息，其通常由于在低频范围内的低信噪比而丧失，独立于自由表面条件或数据采集表面的形状。