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Particle motion sensor for marine seismic sensor streamers

A technology of seismic sensor and motion sensor, which is applied in the direction of seismology, seismic signal receiver, seismology, etc. for areas covered by water, and can solve problems such as particle motion sensor noise and difficulty in interpreting seismic signals

Inactive Publication Date: 2005-09-07
PGS AMERICA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This cable motion, which is independent of the seismic energy, can cause noise in the output of the particle motion sensor, which can make seismic signal interpretation difficult

Method used

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  • Particle motion sensor for marine seismic sensor streamers
  • Particle motion sensor for marine seismic sensor streamers
  • Particle motion sensor for marine seismic sensor streamers

Examples

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Embodiment Construction

[0018] exist figure 1 An embodiment of a seismic sensor placed in a section of a marine seismic sensor streamer is shown in a cross-sectional view of . The streamer 10 includes an outer jacket 12 of any material known in the art for enclosing the components of the seismic sensor streamer. In this embodiment, the jacket 12 can be made of polyurethane material. The jacket 12 in this embodiment may include an integral strength member (for clarity, figure 1 not shown separately). Alternatively, the streamer 10 may include one or more separate strength members (not shown) for transmitting axial loads along the streamer 10 . At least one sensor housing 14 is positioned within the housing 12 at a selected location along the housing. A typical embodiment will include a plurality of such sensor housings located at spaced apart positions along the outer casing 12 . The sensor housing 14 can be made of such as plastic (including but not limited to the trademark LEXAN  The kind of ...

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PUM

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Abstract

A seismic sensor is disclosed which includes at least one particle motion sensor, and a sensor jacket adapted to be moved through a body of water. The particle motion sensor is suspended within the sensor jacket by at least one biasing device. In one embodiment, a mass of the sensor and a force rate of the biasing device are selected such that a resonant frequency of the sensor within the sensor jacket is within a predetermine range.

Description

technical field [0001] The present invention generally relates to the field of seismic surveying systems and techniques. More particularly, the present invention relates to the construction of particle motion sensors for marine seismic streamers. Background technique [0002] In seismic surveying, seismic data is acquired by transmitting acoustic energy into the subsurface near the surface and detecting the acoustic energy reflected from the boundaries between different layers of the subterranean formation. Acoustic energy is reflected when there is a difference in acoustic impedance between formations on opposite sides of the boundary. Signals representing detected acoustic energy are interpreted to infer the structure and composition of subsurface structures. [0003] In marine seismic surveys (seismic surveys conducted in bodies of water), seismic energy sources such as air guns or arrays of air guns are commonly used to deliver acoustic energy into the subsurface. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01VG01V1/00G01V1/16G01V1/18G01V1/20G01V1/38
CPCG01V1/184G01V1/201G01V1/18G01V1/3808
Inventor S·R·L·藤哈姆A·施藤策尔
Owner PGS AMERICA INC
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