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Pneumatic control for marine seismic source and method

一种震源、排气口的技术，应用在地震学、发动机元件、阀的操作/释放装置等方向，能够解决脉冲源频率含量不是完全可控制等问题

Active Publication Date: 2016-01-20
SERCEL INC
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the frequency content of pulsed sources is not fully controllable and different sources are chosen depending on the needs of a particular survey

Method used

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  • Pneumatic control for marine seismic source and method
  • Pneumatic control for marine seismic source and method
  • Pneumatic control for marine seismic source and method

Examples

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Embodiment Construction

[0020] The following description of the exemplary embodiments refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. The following detailed description does not limit the invention. In fact, the scope of the present invention is defined by the appended claims. For the sake of simplicity, the following embodiments are discussed in terms of terms and the structure of the air gun. However, the embodiments to be discussed next are not limited to air guns, but can be applied to other structures configured to generate waves with a controlled frequency range.

[0021] The reference to "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the disclosed subject matter. Therefore, the appearance of the phrase "in one embodiment" or "in an embodiment" in various p...

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Abstract

The invention discloses a pneumatic control for marine seismic source and method. Method, source and shuttle configured to generate acoustic waves under water. The shuttle (822) includes a firing piston (822A) closing a firing chamber (804) and contributing to holding the compressed gas, and a transitional region (822D) connected to the firing piston (822A). The firing chamber (804) and the transitional region (822D) define a most restrictive area (880) through which the compressed gas is released toward the at least one exhaust port (810), the most restrictive area (880, 890) is substantially smooth while the movable shuttle (822) moves toward the open position, and a profile of the transitional region (822D) is selected to reduce a high-frequency content of the acoustic waves.

Description

Technical field [0001] The embodiments of the subject matter disclosed herein generally relate to methods and systems, and more specifically, to mechanisms and techniques for controlling the output of seismic sources. Background technique [0002] Reflection seismology is a method of geophysical surveys used to determine the characteristics of a part of the earth's subterranean layers, and this information is particularly helpful for the oil and gas industry. Ocean reflection seismology is based on the use of controlled seismic sources that send energy waves into the earth. By measuring the time required for reflections to return to multiple receivers, it is possible to estimate the depth and / or composition of the features that caused such reflections. These features can be associated with hydrocarbon deposits in the ground. [0003] For marine applications, the source is basically pulsed (for example, sudden expansion of compressed air). One of the most commonly used sources is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/122
CPCF16K31/122G01V1/137G01V1/147
Inventor 多利安·赫夏勒弥弗雷德里克·索特龙
Owner SERCEL INC
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