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公开(公告)号：US20240288302A1
公开(公告)日：2024-08-29
申请号：US18289808
申请日：2022-05-09
申请人： OPTICS11 B.V.
发明人： Niek RIJNVELD , Peter POLYVAS , Arun GUNDA , Rudolf KYSELICA , Grzegorz GRUCA
CPC分类号： G01H9/004 , G01D5/35303 , G01V1/188 , H04R1/44 , G02B6/0208
摘要： A hydrophone has a mandrel with a shell and a cylindrical cavity inwardly adjacent to the shell. A passage provides fluid communication between the cylindrical cavity and an exterior environment surrounding the mandrel. The hydrophone further has an optical fiber having an optical sensing section that is at least partially wound on the mandrel. The optical sensing section has an optical characteristic that varies as a function of a radial dimension of the mandrel. The mandrel has a core of solid material having a bulk modulus lower than 0.1 GPa. The cylindrical cavity is between the core and the shell.
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2.发明申请公开(公告)号：US20170031040A1
公开(公告)日：2017-02-02
申请号：US14977059
申请日：2015-12-21
申请人： Matthew C. Goenner , Miheala Marin
发明人： Matthew C. Goenner , Miheala Marin
IPC分类号： G01V1/18
摘要： An improved hydrophone is presented that has extremely low acceleration sensitivity, hermetic sealing, and is self-shielded. The hydrophone can also contain an integral amplifier and pressure/depth limiting switch. The hydrophone is also designed such that it can use a single standard piezoelectric sensing element in many hydrophone designs that have different acoustic pressure sensitivities but the same capacitance. Lastly, the sensor is also designed to he low cost in high volumes using standard accelerometer manufacturing techniques. A hydrophone is also designed such that it can use a single standard piezoelectric sensing element that can be incorporated into several hydrophone configurations with varying acoustic pressure sensitivities. The sensor is also designed to be low cost in high volumes.
摘要翻译： 提出了一种改进的水听器，具有极低的加速灵敏度，气密密封，并且是自屏蔽的。 水听器还可以包含一个整体的放大器和压力/深度限制开关。 水听器还被设计成使得它可以在许多水听器设计中使用具有不同声压敏感度但具有相同电容的单个标准压电传感元件。 最后，传感器也被设计成使用标准的加速度计制造技术在高容量下成本低。 还设计了一种水听器，使得它可以使用单个标准压电传感元件，其可以并入具有不同声压灵敏度的若干水听器配置中。 该传感器也被设计成高成本的低成本。
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公开(公告)号：US09103713B2
公开(公告)日：2015-08-11
申请号：US13642519
申请日：2012-04-13
摘要： The invention consists of an optical hydrophone, an optical fiber element forming a laser cavity, housed in a mechanical structure which comprises an open cylindrical rigid body, defining the cavity enclosing a fluid and in which the optical fiber element is housed, and closed at its ends by two end caps which keep the optical fiber element permanently under tension, in a longitudinal rectilinear position inside the cavity. The end caps are configured in such a way that when the exterior pressure varies, they undergo a deformation giving rise to a variation in the length of the optical fiber element and that when the temperature varies, they undergo a deformation giving rise to a variation in the length of the optical fiber element which compensates for that induced on this element by the temperature variation. The mechanical structure furthermore exhibits one or more orifices allowing equilibration of the static pressures.
摘要翻译： 本发明包括光学水听器，形成激光腔的光纤元件，其容纳在机械结构中，机械结构包括开放的圆柱形刚体，限定封闭流体的空腔，光纤元件容纳在其中并在其中封闭 端部是两个端盖，其保持光纤元件永久地处于张力下，在腔内的纵向直线位置。 端盖构造成使得当外部压力变化时，它们经历变形，导致光纤元件长度的变化，并且当温度变化时，它们经历变形，从而导致变化 光纤元件的长度，通过温度变化补偿在该元件上感应的光纤元件。 机械结构还表现出允许静压力平衡的一个或多个孔。
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公开(公告)号：US20180329094A1
公开(公告)日：2018-11-15
申请号：US16012250
申请日：2018-06-19
发明人： Matthew C. Goenner , Mihaela MARIN
摘要： An improved hydrophone is presented that has extremely low acceleration sensitivity, hermetic sealing, and is self-shielded. The hydrophone can also contain an integral amplifier and pressure/depth limiting switch. The hydrophone is also designed such that it can use a single standard piezoelectric sensing element in many hydrophone designs that have different acoustic pressure sensitivities but the same capacitance. Lastly, the sensor is also designed to be low cost in high volumes using standard accelerometer manufacturing techniques. A hydrophone is also designed such that it can use a single standard piezoelectric sensing element that can be incorporated into several hydrophone configurations with varying acoustic pressure sensitivities. The sensor is also designed to be low cost in high volumes.
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公开(公告)号：US09891329B2
公开(公告)日：2018-02-13
申请号：US15356844
申请日：2016-11-21
申请人： CGG SERVICES SAS
发明人： John Sallas , Thierry Ameil , Robert Dowle , Dominique Thomas
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.
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公开(公告)号：US20160266265A1
公开(公告)日：2016-09-15
申请号：US14645122
申请日：2015-03-11
申请人： Thomas Kruspe , Sebastian Jung , Sebastian Csutak
发明人： Thomas Kruspe , Sebastian Jung , Sebastian Csutak
CPC分类号： G01V1/186 , E21B33/13 , E21B43/26 , E21B47/00 , G01B11/16 , G01H9/004 , G01K11/3206 , G01V1/188 , G02B6/02076
摘要： An apparatus for sensing a parameter beneath a surface of the earth includes an optical fiber disposed beneath a surface of the earth and comprising at least one fiber Bragg grating sensor configured to sense the parameter and a wide-band light source disposed beneath the surface of the earth and configured to emit light in a wide band of wavelengths to illuminate the at least one fiber Bragg grating. An optical interrogator is disposed beneath the surface of the earth and configured to receive light reflected by the at least one fiber Bragg grating sensor and to transform a shift in wavelength of the reflected light into a variation of light intensity. A photo-sensor is configured to measure intensity of light received from the optical interrogator. Electronics are coupled to the photo-sensor and configured to measure a voltage representing the light intensity at the photo-sensor to sense the parameter.
摘要翻译： 用于感测地球表面下方的参数的装置包括设置在地表面下方的光纤，并且包括配置成感测参数的至少一个光纤布拉格光栅传感器和设置在该地面下方的宽带光源 并且被配置为发射宽波段的光以照射所述至少一个光纤布拉格光栅。 光学询问器设置在地表的下面，并被配置为接收由至少一个光纤布拉格光栅传感器反射的光并且将反射光的波长偏移转换为光强度的变化。 光传感器被配置为测量从光学询问器接收的光的强度。 电子器件耦合到光传感器并且被配置为测量表示光传感器处的光强度的电压以感测参数。
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公开(公告)号：US3213414A
公开(公告)日：1965-10-19
申请号：US21956662
申请日：1962-08-27
发明人： MOSER EDWARD I
CPC分类号： E21B47/0005 , G01V1/188 , G01V1/52 , G01V1/523
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公开(公告)号：US11898902B1
公开(公告)日：2024-02-13
申请号：US18448511
申请日：2023-08-11
申请人： QINGDAO INNOVATION AND DEVELOPMENT CENTER OF HARBIN ENGINEERING UNIVERSITY , HARBIN ENGINEERING UNIVERSITY
发明人： Yongyao Chen , Xin Wang , Junjie Li , Zedong Ma , Liang Zhang
摘要： Provided is a swim bladder bionic amphibious optical fiber ocean acoustic sensor, belonging to the field of optical fiber ocean sensors, consisting of a sound sensitive diaphragm, a diaphragm supporting shell, a section of coated optical fiber, a single-hole optical fiber sleeve and a single-mode optical fiber. An upper surface of the supporting shell is provided with two symmetrical overflow holes, and a structure includes a back cavity communicated with the overflow holes. A medium in the back cavity of the sensor may be replaced by inflating, deflating and filling water through the overflow holes, to achieve impedance matching with external environments. When the back cavity is inflated, the sensor serves as a fiber-optic microphone, and when the back cavity is deflated and filled with water, the sensor serves as a fiber-optic hydrophone. The working states could be switched flexibly to achieve a working mode like a swim bladder.
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公开(公告)号：US09784861B2
公开(公告)日：2017-10-10
申请号：US14569066
申请日：2014-12-12
申请人： PGS Geophysical AS
摘要： This disclosure is related to hydrophones, for example hydrophones that may be used in marine seismic surveying, permanent reservoir monitoring, downhole acoustic monitoring in a wellbore, and/or various other applications. Some embodiments of a hydrophone according to this disclosure are constructed such that a longitudinal stiffness of the hydrophone is greater than a circumferential stiffness of the hydrophone. In some embodiments, however, the longitudinal stiffness may be somewhat less than the circumferential stiffness. For example, the longitudinal stiffness may be greater than one half the circumferential stiffness in some cases.
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公开(公告)号：US09448312B1
公开(公告)日：2016-09-20
申请号：US14645122
申请日：2015-03-11
申请人： Thomas Kruspe , Sebastian Jung , Sebastian Csutak
发明人： Thomas Kruspe , Sebastian Jung , Sebastian Csutak
CPC分类号： G01V1/186 , E21B33/13 , E21B43/26 , E21B47/00 , G01B11/16 , G01H9/004 , G01K11/3206 , G01V1/188 , G02B6/02076
摘要： An apparatus for sensing a parameter beneath a surface of the earth includes an optical fiber disposed beneath a surface of the earth and comprising at least one fiber Bragg grating sensor configured to sense the parameter and a wide-band light source disposed beneath the surface of the earth and configured to emit light in a wide band of wavelengths to illuminate the at least one fiber Bragg grating. An optical interrogator is disposed beneath the surface of the earth and configured to receive light reflected by the at least one fiber Bragg grating sensor and to transform a shift in wavelength of the reflected light into a variation of light intensity. A photo-sensor is configured to measure intensity of light received from the optical interrogator. Electronics are coupled to the photo-sensor and configured to measure a voltage representing the light intensity at the photo-sensor to sense the parameter.
摘要翻译： 用于感测地球表面下方的参数的装置包括设置在地表面下方的光纤，并且包括配置成感测参数的至少一个光纤布拉格光栅传感器和设置在该地面下方的宽带光源 并且被配置为发射宽波段的光以照射所述至少一个光纤布拉格光栅。 光学询问器设置在地表的下面，并被配置为接收由至少一个光纤布拉格光栅传感器反射的光并且将反射光的波长偏移转换为光强度的变化。 光传感器被配置为测量从光学询问器接收的光的强度。 电子器件耦合到光传感器并且被配置为测量表示光传感器处的光强度的电压以感测参数。
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