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11.发明申请公开(公告)号：US20140254312A1
公开(公告)日：2014-09-11
申请号：US14164626
申请日：2014-01-27
申请人： CGG SERVICES SA
IPC分类号： G01V1/137
摘要： A resonant source element is configured to generate seismic waves in water. The resonant source element includes a housing having two openings covered by first and second pistons, wherein the first and second pistons are configured to freely translate relative to the housing to generate the seismic waves; and a high-pressure system configured to discharge inside the housing and to actuate the first and second pistons. The first and second pistons are configured to oscillate after the high-pressure system is fired to generate low-frequency seismic waves.
摘要翻译： 谐振源元件被配置为在水中产生地震波。 谐振源元件包括具有由第一和第二活塞覆盖的两个开口的壳体，其中第一和第二活塞构造成相对于壳体自由平移以产生地震波; 以及高压系统，其构造成在所述壳体内排放并致动所述第一和第二活塞。 第一和第二活塞构造成在高压系统被点火之后振荡以产生低频地震波。
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公开(公告)号：US20140238773A1
公开(公告)日：2014-08-28
申请号：US14172004
申请日：2014-02-04
申请人： CGG SERVICES SA
发明人： John SALLAS , Thierry AMEIL , Robert DOWLE , Dominique THOMAS
IPC分类号： G01V1/155
CPC分类号： G01V1/04 , G01V1/135 , G01V1/143 , G01V1/145 , G01V1/155 , G01V1/188 , G01V1/38 , G01V2210/1293
摘要： Method, source array and source element that generate seismic waves. The source element includes an enclosure having an opening covered by a piston; a local supply accumulator fluidly communicating with an interior of the enclosure, a pressure of the fluid inside the local supply accumulator being larger than a pressure of the fluid inside the enclosure; a local supply valve located between the local supply accumulator and the enclosure and configured to control a flow of the fluid from the local supply accumulator to the interior of the enclosure; and a controller configured to control the local supply valve such that the pressure inside the enclosure does not fall below a first preset value based upon an ambient pressure of the enclosure while seismic waves are generated.
摘要翻译： 方法，源阵列和源元素，产生地震波。 源元件包括具有被活塞覆盖的开口的外壳; 与外壳内部流体连通的局部供应储液器，局部供应储液器内部的流体的压力大于外壳内流体的压力; 位于本地供给蓄电池和外壳之间并配置成控制流体从本地蓄电池到外壳内部的本地供应阀; 以及控制器，其被配置为控制所述局部供应阀，使得在产生地震波的同时，基于所述外壳的环境压力，所述外壳内的压力不会低于第一预设值。
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公开(公告)号：US08689930B2
公开(公告)日：2014-04-08
申请号：US13434631
申请日：2012-03-29
摘要： A seismic vibrator includes a baseplate having a surface configured to couple to a ground surface. A driver is coupled to the baseplate and is configured to move the baseplate in a vibratory manner. A decoupling system is coupled to a part of the baseplate other than the ground-contacting surface. The decoupling system includes a first layer having a Young's modulus greater than that of a second layer coupled to the first layer. The second layer is coupled to the baseplate. The Young's moduli, thicknesses and masses of the first and second layer are selected to provide the decoupling system with a resonant frequency of at most, a spatial aliasing frequency of seismic sensors deployed on the ground surface or a lowest seismic frequency of interest.
摘要翻译： 地震振动器包括具有配置成耦合到地面的表面的基板。 驱动器联接到基板并且被配置成以振动的方式移动底板。 脱耦系统耦合到底板的除地面接触表面之外的一部分。 去耦系统包括具有比耦合到第一层的第二层的杨氏模量大的杨氏模量的第一层。 第二层耦合到基板。 选择第一层和第二层的杨氏模量，厚度和质量以使解耦系统具有至多的共振频率，部署在地面上的地震传感器的空间混叠频率或感兴趣的最低地震频率。
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公开(公告)号：US08630149B2
公开(公告)日：2014-01-14
申请号：US12995763
申请日：2009-06-17
摘要： A low frequency sound source has a radiating piston (3) of the order of a few meters across backed by a gas spring (13, 15) containing a fixed mass of gas. The gas pressure in the spring is kept at levels for which the natural frequency of the piston (3) loaded by the fluid (41) lies in the seismic band and may be as low as 0.5 Hz. The piston (3) is given an initial displacement and begins to oscillate. Its oscillations are sustained by an actuator (27, 29) whose drive signal is derived from the velocity of the piston (5) via a velocity or displacement sensor. The sound source is caused to perform a frequency sweep by gradually compressing the gas in the gas spring (13, 15) so that the spring becomes stiffer both because of the rising pressure and because of the reducing length of the gas spring spaces (13, 15). This double effect allows large changes in stiffness to be produced and hence allows the source to operate over at least three octaves of frequency.
摘要翻译： 低频声源具有几米数量级的散热活塞（3），由具有固定质量气体的气弹簧（13,15）支撑。 弹簧中的气体压力保持在由流体（41）装载的活塞（3）的固有频率位于地震带中并且可以低至0.5Hz的水平。 活塞（3）被给予初始位移并开始振荡。 其振荡由致动器（27,29）维持，致动器（27,29）的驱动信号是通过速度或位移传感器从活塞（5）的速度导出的。 使声源通过逐渐压缩气弹簧（13,15）中的气体来进行频率扫描，使得由于压力上升并且由于气弹簧空间（13,15）的减小长度，弹簧变得更硬， 15）。 这种双重效应允许产生刚度的大的变化，并且因此允许源在至少三个频率八度的频率上操作。
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公开(公告)号：US20130163386A1
公开(公告)日：2013-06-27
申请号：US13337431
申请日：2011-12-27
申请人： John J. SALLAS
发明人： John J. SALLAS
IPC分类号： G01V1/135
摘要： A seismic source configured to generate seismic waves underground. The source includes a tank configured to be buried underground, the tank having a cavity; an actuation mechanism provided inside the cavity, wherein the actuation mechanism is configured to have at least one movable part that moves back and forth to generate a seismic wave having a desired frequency; and a first fluid provided inside the cavity and around the actuation mechanism and configured to transform the back and forth movement of the at least one movable part into a varying pressure that directly acts on walls of the tank.
摘要翻译： 地震源被配置为在地下产生地震波。 源包括配置为埋在地下的罐，罐具有空腔; 设置在所述腔体内的致动机构，其中所述致动机构被配置为具有来回移动的至少一个可移动部件以产生具有期望频率的地震波; 以及第一流体，其设置在所述空腔内并且围绕所述致动机构并且被配置为将所述至少一个可移动部件的所述前后运动变换成直接作用在所述罐的壁上的变化压力。
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公开(公告)号：US06193010B1
公开(公告)日：2001-02-27
申请号：US09413630
申请日：1999-10-06
申请人： James Minto
发明人： James Minto
IPC分类号： G01V140
CPC分类号： G01V1/135 , Y10S367/911
摘要： The invention is an apparatus for generating a seismic signal in a fluid filled borehole which includes an elongated housing formed from a gas impermeable material and a controlled frequency energy source within said housing. The housing has an external shape which expands and contracts in response to variations in pressure within said housing to enhance the transmission of said seismic signal to the borehole fluid, such as pressure variations resulting from fluid resonance within said housing.
摘要翻译： 本发明是一种用于在流体充填钻孔中产生地震信号的装置，其包括由气体不可渗透材料形成的细长壳体和在所述壳体内的受控频率能量源。 壳体具有外部形状，其响应于所述壳体内的压力变化而膨胀和收缩，以增强所述地震信号到井眼流体的传输，例如由所述壳体内的流体共振引起的压力变化。
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公开(公告)号：US5978316A
公开(公告)日：1999-11-02
申请号：US940088
申请日：1997-09-29
申请人： Loran D. Ambs , John J. Sallas
发明人： Loran D. Ambs , John J. Sallas
摘要： A seismic acoustic signal source includes a hull that has a wetted surface in contact with a body of water. When underway, the draft of the hull is substantially zero. An acoustic signal generator is provided with a linear actuator that is resiliently mounted in the hull. The linear actuator is acoustically coupled to the hull bottom such that when the signal generator is activated, the hull radiates an acoustic wavefield into the water.
摘要翻译： 地震声信号源包括具有与水体接触的润湿表面的船体。 在进行中，船体的草案基本为零。 声信号发生器具有弹性地安装在船体中的线性致动器。 线性致动器声耦合到船体底部，使得当信号发生器被激活时，船体将声波场辐射到水中。
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公开(公告)号：US5137109A
公开(公告)日：1992-08-11
申请号：US655683
申请日：1991-02-14
申请人： Alain Dorel
发明人： Alain Dorel
CPC分类号： G01V1/135 , G01V11/005
摘要： A seismic source for use in a borehole (10) comprises a resonant system (26) which is excited at its resonance frequency while said resonance frequency is caused to vary in controlled manner, thereby performing a frequency sweep. To this end, the pressure inside the enclosure (32) containing the reaction mass (30) of the resonant system (26) is raised to a given initial static pressure by means of a high pressure unit (60), after which the pressure inside the upper chamber (38) of the enclosure (32) is caused to vary according to a substantially sinusoidal law, by means of an electrically controlled valve (52) fed from a low pressure unit (46), while the static pressure is caused to vary regularly via a constriction (74).
摘要翻译： 在井眼（10）中使用的地震源包括谐振系统（26），其以其共振频率被激发，同时使所述谐振频率以受控的方式变化，从而进行频率扫描。 为此，包含谐振系统（26）的反应物质（30）的外壳（32）内的压力通过高压单元（60）升高至给定的初始静压力，之后压力 通过借助于从低压单元（46）供给的电控阀（52），根据基本正弦定律使外壳（32）的上腔室（38）变化，同时使静压力 通过收缩定期变化（74）。
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19.发明授权Sonar projector with liquid mass loading for operation at lower frequency 失效声纳投影仪具有液体质量负载，可在较低频率下运行
公开(公告)号：US5047997A
公开(公告)日：1991-09-10
申请号：US554401
申请日：1990-07-19
申请人： Gerard K. Forsberg
发明人： Gerard K. Forsberg
CPC分类号： G01V1/135 , B06B1/045 , Y10T137/4456
摘要： A sonar projector having a pair of opposed oscillating pistons driven by an electromagnetic assembly is rendered capable of operating at reduced resonant frequency by providing liquid mass loading for the pistons. The mass loading is achieved by utilizing a structure which constricts a body of liquid on one side of the piston. The constricted liquid may be sea water or a liquid sealed within the body of the unit. In accordance with a further aspect of the invention, a seal assembly is provided for the moving pistons which not only provides a sealing function but which also acts to radially center the pistons and to provide an axially directed restoring force thereto during piston oscillation. The electromagnetic assembly, in accordance with still a further aspect of the invention, is formed with a permanent magnet structure arranged in a cylindrical configuration with the opposed pistons on opposite axial ends thereof to reduce magnetic leakage losses.
摘要翻译： 具有由电磁组件驱动的一对相对的振荡活塞的声纳投影机能够通过为活塞提供液体质量负载而以降低的共振频率进行操作。 通过利用在活塞的一侧上限制液体的结构来实现质量加载。 收缩的液体可以是海水或密封在单元体内的液体。 根据本发明的另一方面，提供了一种用于移动活塞的密封组件，其不仅提供密封功能，而且还用于使活塞径向中心并在活塞振荡期间向其提供轴向定向的恢复力。 根据本发明的另一方面，电磁组件形成有永磁体结构，该永久磁体结构以圆柱形构造布置，在相对的轴向端部上具有相对的活塞，以减少漏磁损失。
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公开(公告)号：US4815557A
公开(公告)日：1989-03-28
申请号：US66919
申请日：1987-06-25
申请人： William D. Duwe
发明人： William D. Duwe
CPC分类号： E21B23/04 , G01V1/135 , G01V11/005 , G01V1/52 , Y10S367/911
摘要： A seismic energy source provides a bias pressure and oscillating pressure force on a piston mounted transversely to the major axis of the well bore and in pressure contact with the wall of the well bore. A seismographic energy wave is generated in the surrounding earth by oscillating the pressure of the piston against the well wall. This apparatus uses the pressure of ambient fluid in the well bore to reduce the power required to provide pressure contact and to oscillate the piston against the wall.
摘要翻译： 地震能量源在垂直于井筒的长轴安装的活塞上并与井眼的壁压力接触的活塞上提供偏置压力和摆动压力。 通过使活塞的压力相对于井壁振动，在周围的地球中产生地震能量波。 该装置使用井眼中的环境流体的压力来降低提供压力接触所需的功率并使活塞相对于壁振荡。
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