Optimizing the compressional wave energy response of an elastic
fluid-filled cylinder
    471.
    发明授权
    Optimizing the compressional wave energy response of an elastic fluid-filled cylinder 失效
    优化弹性流体填充圆柱体的压缩波能量响应

    公开(公告)号:US5781508A

    公开(公告)日:1998-07-14

    申请号:US870263

    申请日:1997-05-29

    Inventor: Mark S. Peloquin

    CPC classification number: G01V1/201 Y10S367/901

    Abstract: A method and system are provided to optimize filtering of compressional wave energy in the wavenumber domain for a given frequency range using a fluid-filled elastic cylinder. The fluid is selected based on its fluid density .rho..sub.i and dilatational wave phase velocity c.sub.i. The selected fluid must satisfy the relationship ##EQU1## for the given frequency range where P.sub.i is the magnitude of the pressure field in the fluid at a point within the fluid defined by a distance r.sub.1 from the cylinder's central longitudinal axis and P.sub.o is the magnitude of the impinging compressional wave, and must control at least one of the breathing wave response, the extensional wave response and the fluid P-wave response.

    Abstract translation: 提供了一种方法和系统,以使用流体填充的弹性圆柱来优化在给定频率范围内波数域中的压缩波能量的过滤。 基于流体密度rho i和膨胀波相速度ci来选择流体。 所选择的流体必须满足给定频率范围的关系,其中Pi是流体内流体中压力场的大小,该流体在流体中的距离圆柱体的中心纵向轴线的距离r1定义,并且Po是 撞击压缩波,并且必须控制呼吸波响应,拉伸波响应和流体P波响应中的至少一个。

    Acoustic sensor and array thereof
    472.
    发明授权
    Acoustic sensor and array thereof 失效
    声传感器及其阵列

    公开(公告)号:US5774423A

    公开(公告)日:1998-06-30

    申请号:US573009

    申请日:1995-12-15

    CPC classification number: G01V1/186 B06B1/0688 G01V1/201 G10K9/125

    Abstract: The present invention provides an acoustic sensor having one or more segments that are electrically coupled to provide a response corresponding to a hydrodynamic pressure applied to the segments. Each segment contains a substrate of a desired shape with a concavity on an outer surface that is sealingly enclosed by an active member made from a flexible, resilient piezoelectric material. PVDF material is preferably used as the piezoelectric active element. The active member is covered with a protective layer of a suitable material, preferably a polyvinyl material. A single segment may be used as a sensor or a plurality of suitably configured segments may be suitably coupled to form the sensor. The sensor may be used as a hydrophone on a hydrophone cable commonly used for performing seismic surveys for geophysical exploration. In such applications, a plurality of hydrophones are placed equally spaced along the cable. In the preferred embodiment, two hydrophone segments are securely be placed around the cable. The segments are electrically coupled to each other and to a conductor in the cable. In operation, the hydrophone cable is placed at the bottom of a water-covered area or towed behind a seismic vessel to conduct seismic surveys.

    Abstract translation: 本发明提供了一种声传感器,其具有一个或多个段,其被电耦合以提供对应于施加到段的流体动力学压力的响应。 每个段包含一个所需形状的衬底,其外表面上具有由柔性弹性压电材料制成的有源构件密封地封闭的凹面。 PVDF材料优选用作压电有源元件。 活性构件覆盖有合适材料的保护层,优选聚乙烯材料。 可以将单个段用作传感器,或者可以适当地连接多个适当配置的段以形成传感器。 传感器可用作通常用于进行地球物理勘探地震勘测的水听器电缆上的水听器。 在这种应用中,多个水听器沿电缆等距分布放置。 在优选实施例中,两个水听器段被牢固地放置在电缆周围。 这些段彼此电耦合并连接到电缆中的导体。 在操作中,水听器电缆放置在覆盖水域的底部或拖在地震船后面进行地震测量。

    Method and apparatus for taking seismic measurements
    473.
    发明授权
    Method and apparatus for taking seismic measurements 失效
    采取地震测量的方法和装置

    公开(公告)号:US5747754A

    公开(公告)日:1998-05-05

    申请号:US507293

    申请日:1995-08-24

    CPC classification number: G01V1/3808 G01V1/201

    Abstract: Method and apparatus for carrying out seismic survey includes a plurality of spaced apart seismic detecting sensors each having a geophone unit for detecting seismic activities. The sensors are linked serially with a cable. One end of each geophone unit is flexibly linked to a carrier frame so that the geophone units pivotally move freely relative to the carrier frames. The cable passes through the carrier frames so that the carrier frames are spaced apart serially. Each geophone unit carries a vibrator, a plurality of geophones, a compass, and an inclinometer. The vibrator is positioned on the free end portion of the geophone unit, for embedding the geophone into the ground, while the compass is positioned farthest away from the vibrator. The free pivotal movement of the geophone units enables them to dig into the ground.

    Abstract translation: PCT No.PCT / NO94 / 00043 Sec。 371日期1995年8月24日 102(e)日期1995年8月24日PCT 1994年2月21日PCT PCT。 WO94 / 19707 PCT公开号 日期1994年9月1日。用于进行地震勘测的方法和装置包括多个间隔开的地震检测传感器,每个具有用于检测地震活动的地震检波器单元。 传感器与电缆串联连接。 每个地震检波器单元的一端被灵活地连接到载体框架,使得地震检波器单元相对于载体框架自由枢转地移动。 电缆穿过载体框架,使得载体框架间隔开。 每个地震检波器单元携带振动器,多个地震检波器,罗盘和倾斜计。 振动器位于地震检波器单元的自由端部分,用于将地震检波器嵌入地面,同时罗盘位于最远离振动器的位置。 地震检波器单元的自由枢轴运动使他们能够挖入地面。

    Semi-dry marine seismic streamer cable section
    474.
    发明授权
    Semi-dry marine seismic streamer cable section 失效
    半干式海洋地震流光缆段

    公开(公告)号:US5745436A

    公开(公告)日:1998-04-28

    申请号:US750495

    申请日:1996-12-10

    CPC classification number: G01V1/201

    Abstract: A semi-dry marine seismic streamer cable (5) consists of a number of connected streamer cable sections (5a) which each comprises a mechanical jacket (10) surrounding a hollow core (11) enclosing seismic sensor (15) and signal transfer (16) means. Elongated axial stress elements (18) for transmitting axial loads and a radial reinforcement member (12) for relieving radial loads are provided in the jacket (10). The core (11) is filled with a fluid or a fluid-saturated foam and the sensor means (15) are mounted in the core (11) by vibration isolating elements (14).

    Abstract translation: PCT No.PCT / NO95 / 00108 Sec。 371日期1996年12月10日第 102(e)日期1996年12月10日PCT Filed 1995年6月20日PCT公布。 第WO95 / 35513号公报 日期:1995年12月28日半干式海洋地震拖缆电缆(5)包括多个连接的流光缆部分(5a),每个部分包括围绕包围地震传感器(15)的空心芯(11)的机械护套(10) 和信号传输(16)。 用于传递轴向载荷的细长轴向应力元件(18)和用于减轻径向载荷的径向加强构件(12)设置在护套(10)中。 芯部(11)填充有流体或流体饱和的泡沫,并且传感器装置(15)通过隔振元件(14)安装在芯部(11)中。

    Latching device
    475.
    发明授权
    Latching device 失效
    锁定装置

    公开(公告)号:US5709497A

    公开(公告)日:1998-01-20

    申请号:US666650

    申请日:1996-06-18

    Abstract: A cluster of seismic streamer cable utility modules is provided with a set of hinged latching members. The hinged latching members are adapted secure the cluster to the steamer cable by closing the hinged latches around corresponding collars mounted on the streamer cable. The collars form an inner race while the closed hinged latches form an outer race to allow free relative rotation between the streamer cable and the cluster of modules.

    Abstract translation: 一组地震拖缆电缆实用模块设置有一组铰接闩锁构件。 铰接的闩锁构件适于通过将安装在流光缆上的相应套环周围的铰接闩锁闭合来将集束固定到蒸笼电缆。 套圈形成内圈,而闭合的铰接闩锁形成外圈,以允许拖缆和模块群之间的自由相对旋转。

    Sock shaped internal strength member for towed arrays
    476.
    发明授权
    Sock shaped internal strength member for towed arrays 失效
    用于拖曳的阵列的袜形内部强度构件

    公开(公告)号:US5673235A

    公开(公告)日:1997-09-30

    申请号:US81813

    申请日:1987-07-30

    Inventor: Howard A. Miller

    CPC classification number: G01V1/201

    Abstract: An elongate towed acoustic array is improved by the inclusion of a speciflly configured tensile load bearing strength member disposed within a hose-shaped sheath. The member has a plurality of longitudinally extending high strength cords formed of braids or strands of high tensile strength fibers. The cords are held in a longitudinal juxtaposed relationship by a transverse weave to define a hollow interior for non-compressively containing sensor elements. Thusly configured, the strength member possess a softness and flexibility that does not create damage inducing crimps while not overly interfering with the sensors' acoustic sensing capabilities. The hose-shaped sheath contains the tubular-shaped strength member in a non-compressive relationship to reduce the problems normally associated with flow noise. The cords are braided together in an eye-splice where they are wrapped about towing pins so that the cords' tensile strength is not compromised at the point of attachment. Optionally, a twill weave is used to hold the longitudinal cords in their juxtaposed relationship to assure softness and flexibility for the wall of the strength member.

    Abstract translation: 通过包括设置在软管形鞘内的特定构造的拉伸承载强度构件来改善细长的牵引声阵。 该构件具有由高抗拉强度纤维的编织物或股线形成的多个纵向延伸的高强度帘线。 帘线通过横向织物以纵向并置的关系保持,以限定用于非压缩地包含传感器元件的中空内部。 因此,强度构件具有柔软性和柔韧性,其不会产生损伤,从而不会过度干扰传感器的声学感测能力。 软管形护套以非压缩关系包含管状强度构件,以减少通常与流动噪声相关的问题。 绳索被编织在一起,其中它们被缠绕在牵引销上,使得绳索的拉伸强度在附着点处不受损害。 可选地,使用斜纹组织将纵向帘线保持并置的关系,以确保强度构件的壁的柔软性和柔性。

    Data collection and relay circuit for towed hydrophone array
    477.
    发明授权
    Data collection and relay circuit for towed hydrophone array 失效
    牵引水听器阵列的数据收集和继电器电路

    公开(公告)号:US5592437A

    公开(公告)日:1997-01-07

    申请号:US126064

    申请日:1993-09-23

    Applicant: Bruce Elliott

    Inventor: Bruce Elliott

    CPC classification number: G01V1/22 G01V1/201

    Abstract: Disclosed is a programmable data collection and relay circuit for a towed hydrophone array. The circuit is designed to prepare data concerning operation of the array to be interleaved with substantive data produced by the hydrophones to produce a single data stream for transmission to recording equipment. The circuit comprises (1) a plurality of sensor inputs, each of the sensor inputs adapted to be coupled to a sensor capable of sensing a physical characteristic within the towed hydrophone array, (2) a circuit for polling at least a portion of the plurality of sensor inputs to determine values of the inputs, (3) a circuit for storing programmed data concerning which of the plurality of inputs is to be polled and (4) a circuit for serially placing the input values in condition for insertion into a data stream transmitted along the towed hydrophone array.

    Abstract translation: 公开了一种用于拖曳水听器阵列的可编程数据采集和继电器电路。 该电路被设计为准备要与由水听器产生的实质数据交错的阵列的操作的数据,以产生用于传输到记录设备的单个数据流。 电路包括(1)多个传感器输入,每个传感器输入适于耦合到能够感测拖曳的水听器阵列内的物理特性的传感器,(2)用于轮询多个部分中的至少一部分的电路 传感器输入以确定输入值,(3)用于存储关于要轮询多个输入中的哪一个的编程数据的电路,以及(4)用于将输入值串行放置在用于插入到数据流中的条件的电路 沿着拖曳的水听器阵列传送。

    Towed hydrophone streamer with integrated module coupler
    478.
    发明授权
    Towed hydrophone streamer with integrated module coupler 失效
    带集成模块耦合器的拖拉式水听器拖缆

    公开(公告)号:US5513151A

    公开(公告)日:1996-04-30

    申请号:US342845

    申请日:1994-11-21

    CPC classification number: G01V1/201 H01R13/523 H01R13/533 H01R13/6276

    Abstract: An integrated module coupler for a towed hydrophone streamer and a method of transmitting towing forces and electrical signals therethrough. The coupler comprises: (1) a coupler body having a plurality of axial bores and a plurality of tension member apertures therethrough, (2) a plurality of electrically-conductive pins disposed through the bores, (3) an insulating material, disposed between the plurality of pins and walls of the plurality of bores, for insulating the pins from the coupler body to thereby allow electrical signals to pass via the plurality of pins through the body, (4) means for retaining tension members within each of the tension member apertures, the retaining means allowing the tension members to terminate within the tension member apertures in an eye, the retaining means passing through each of the eyes to thereby engage the tension member and (5) a coupler shell, coaxial with and capturing the coupler body to engage a mating coupler shell of another coupler, towing forces transmittable between the coupler shell and the tension members via the coupler body and the retaining means.

    Abstract translation: 用于拖缆式水听器拖缆的集成模块耦合器以及通过其传输牵引力和电信号的方法。 耦合器包括:(1)耦合器主体,具有多个轴向孔和穿过其中的多个张紧构件孔,(2)穿过孔布置的多个导电销,(3)绝缘材料, 多个孔的多个销和壁,用于将销与耦合器主体绝缘,从而允许电信号经由多个销穿过本体;(4)用于将张力构件保持在每个张紧构件孔内的装置 ,所述保持装置允许张紧构件终止在眼睛中的张力构件孔内,保持装置穿过每个眼睛,从而接合张紧构件和(5)与钩体同轴并且将捕获体耦合到壳体的耦合器壳体 接合另一耦合器的配合耦合器壳体,牵引力可通过耦合器主体和保持装置在耦合器壳体和张紧构件之间传递。

    Vibration isolation module
    479.
    发明授权
    Vibration isolation module 失效
    隔振模块

    公开(公告)号:US5463193A

    公开(公告)日:1995-10-31

    申请号:US36707

    申请日:1993-03-25

    CPC classification number: G01V1/201 F16F7/104 F16F9/30

    Abstract: A Vibration Isolation Module (VIM) for a towed acoustic streamer includes cylindrical masses attached at regular spacing to a central core of viscoelastic damping material, which may be extruded over a snubbed elastic strength member. Further snubbed elastic strength members may be attached around the outer diameter of the masses. Viscous "dash-pot" type dampers are installed within the masses. The space between the masses is filled with open cell plastic foam, around which is wrapped a layer of power and data cables. A jacket of damped thermoplastic is extruded over the cable layer and caps containing a fluid filling valve are attached at each end of the module, and the interior void is filled with a low density, high viscosity fluid. The "dash-pot" type dampers can be replaced by a stocking which, under extension, compresses the foam and forces fluid through pores of the foam, thus simulating the viscous damping of the "dash-pot" type dampers.

    Abstract translation: 用于拖曳的拖缆机的隔振模块(VIM)包括与粘弹性阻尼材料的中心芯以规则间隔连接的圆柱形块体,其可以挤压在缓冲弹性强度构件上。 另外,弹性强度部件也可以围绕物体的外径附着。 粘性“破水壶”型阻尼器安装在群众中。 质量间的空间充满了开放式泡沫塑料泡沫塑料泡沫,周围环绕着一层电力和数据电缆。 阻尼热塑性塑料夹套挤出在电缆层上,并且包含流体灌装阀的盖子连接在模块的每个端部,并且内部空隙填充有低密度,高粘度流体。 “冲击式”型阻尼器可以被一种长袜替代,在伸展下,它可以压缩泡沫并迫使流体通过泡沫的孔隙,从而模拟“仪表箱”型阻尼器的粘滞阻尼。

    Retriever for a seismic streamer cable
    480.
    发明授权
    Retriever for a seismic streamer cable 失效
    用于地震拖缆电缆的猎犬

    公开(公告)号:US5404339A

    公开(公告)日:1995-04-04

    申请号:US201940

    申请日:1994-02-25

    CPC classification number: B63B21/663 G01V1/201

    Abstract: A marine seismic streamer cable retriever is activated promptly when the cable and its attached retriever exceed a pre-selected safe depth. In an alternative scenario, an electronics module in the cable retriever monitors the presence of through-cable communications traffic between a mother ship and the various sensors in the cable. If an interruption in communications traffic is detected, a clock starts a count-down and sends a warning to the operator aboard ship. At the end of a count-down period, absent prior operator intervention, the cable retriever is activated.

    Abstract translation: 当电缆及其附着的猎犬超过预先选择的安全深度时,海洋地震拖缆电缆回收器立即被激活。 在另一种情况下,电缆回收器中的电子模块监视母船和电缆中的各种传感器之间的通缆通信流量的存在。 如果检测到通信流量中断,则时钟开始倒计时,并向船上的操作员发送警告。 在倒计时结束时,没有先前的操作员干预,电缆回收器被激活。

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