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    • 3. 发明申请
    • COHERENT SOUND SOURCE FOR MARINE SEISMIC SURVEYS
    • 海洋地震勘探相关声源
    • WO2014028293A1
    • 2014-02-20
    • PCT/US2013/054082
    • 2013-08-08
    • APPLIED PHYSICAL SCIENCES CORP.
    • MCCONNELL, James, A.BERKMAN, Evan, F.MURRAY, Bruce, S.ABRAHAM, Bruce, M.
    • G01V1/38
    • G01V1/3861G01V1/145G01V1/159Y02A90/36
    • A coherent sound source is provided for marine seismic surveys. An underwater sound projector for producing time-harmonic waveforms comprises two pistons positioned on either side of a single electro-magnetic force generator substantially having mechanical and magnetic symmetry about its geometric center to substantially cancel reaction loads that occur when the pistons are actuated. The underwater sound projector optionally also includes control systems to improve the fidelity of the force generator, provide pressure compensation to the pistons, finely adjust the static position of the pistons, and change the depth and roll when it is configured as tow body. A plurality of underwater sound projectors can be configured in an array. A load-bearing umbilical can connect the underwater sound projectors to a ship, transmit electrical power to each array element and serve as a duplex data transmission medium to route commands from the ship to the projector and report machinery status.
    • 为海洋地震勘测提供了连贯的声源。 用于产生时间谐波波形的水下声音投影仪包括位于单个电磁力发生器的任一侧的两个活塞,其基本上具有围绕其几何中心的机械和磁性对称性,以基本上抵消当活塞被致动时发生的反作用力。 水下声音投影机可选地还包括控制系统,以提高力发生器的保真度,向活塞提供压力补偿,精细调节活塞的静态位置,并且当其被配置为丝束体时,改变深度和滚动。 多个水下声音投影仪可以被配置成阵列。 负载脐带可以将水下声音投影机连接到船舶,将电力传输到每个阵列元件,并用作双工数据传输介质,以将命令从船舶投影到投影机并报告机器状态。
    • 7. 发明申请
    • ACOUSTIC TRANSDUCER WITH IMPEDANCE MATCHING LAYER
    • 具有阻抗匹配层的声学传感器
    • WO2012112137A1
    • 2012-08-23
    • PCT/US2011/024841
    • 2011-02-15
    • HALLIBURTON ENERGY SERVICES INC.GOODMAN, George DavidMAKI, Voldi, E., Jr.
    • GOODMAN, George DavidMAKI, Voldi, E., Jr.
    • G01V1/40
    • B06B1/067B06B1/0625B06B1/0633G01V1/159G01V1/40G10K11/02
    • A device includes a piezoelectric transducer. The transducer has N independent transducer regions. N is an integer. Each of the N independent transducer regions has a thickness. Each of the N independent transducer regions has an acoustic impedance AIT. Each of the N independent transducer regions is independently excitable to oscillate in the thickness mode when electrically excited by a potential difference applied across the thickness. The device further includes a first impedance matching layer having an acoustic impedance All between AIT and a borehole fluid acoustic impedance AIBF. The first impedance matching layer is situated such that an acoustic signal emitted by the piezoelectric transducer will pass through the second impedance matching layer. The device further includes a second impedance matching layer having an acoustic impedance AI2 between All and AIBF.
    • 一种装置包括压电换能器。 传感器具有N个独立的换能器区域。 N是整数。 N个独立的换能器区域中的每一个具有厚度。 N个独立的换能器区域中的每一个具有声阻抗AIT。 N个独立的换能器区域中的每一个独立地可兴奋地在厚度模式下振荡,当通过施加在该厚度上的电位差而被电激励时。 该装置还包括具有AIT和钻孔流体声阻抗AIBF之间的声阻抗全部的第一阻抗匹配层。 第一阻抗匹配层的位置使得由压电换能器发射的声信号将通过第二阻抗匹配层。 该装置还包括在All与AIBF之间具有声阻抗AI2的第二阻抗匹配层。