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Seismic source device, marine exploration system and control method of vibroseis

A control method and source technology, applied in the field of marine exploration, can solve the problems of the marine exploration system being unable to obtain information, difficult to maintain a preset attitude, and the angle of vibration signal shifting, so as to improve the accuracy and resolution of exploration, good response speed, less dependent effects

Pending Publication Date: 2021-06-18
CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +2
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Problems solved by technology

For example, with the movement of the hull, it is difficult for the vibrator to maintain a preset attitude under the disturbance of ocean tides, resulting in an offset in the angle of the vibration signal output by the vibrator, so that the ocean exploration system cannot obtain accurate information

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  • Seismic source device, marine exploration system and control method of vibroseis
  • Seismic source device, marine exploration system and control method of vibroseis
  • Seismic source device, marine exploration system and control method of vibroseis

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Embodiment Construction

[0030] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0031] The invention can be embodied in various forms, some examples of which are described below.

[0032] Here are some terms explained.

[0033] Vibroseis: It is excited to generate a continuous frequency sweep signal. As an excitation source in geological survey, the parameters such as the frequency of the vibration signal output by it can be controlled artificially. The vibrator is an important part of the marine exploration system, which basically determines the formation penetration depth and resolution of marine seismic exploration.

[0034] Ocean Exploration System

[0035] The marine exploration system of the embodiment of the present disclosure may includ...

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Abstract

The invention discloses a seismic source device, a control method of a vibroseis and a marine exploration system. The seismic source device comprises a vibroseis for providing a vibration signal, a sensor fixedly connected with the vibroseis and obtaining sensing data representing the attitude inclination angle of the vibroseis, and at least one compensation motor fixedly connected with the vibroseis and providing compensation force for the vibroseis under the action of a motor driving signal so as to adjust the attitude inclination angle of the vibroseis, wherein the motor driving signal is generated by a PID control model based on the sensing data. According to the seismic source device, the control method of the vibroseis and the ocean exploration system provided by the invention, attitude closed-loop control of the vibroseis is realized by adopting the PID model and the sensing data provided by a seismic source end, so that the attitude inclination angle of the vibroseis can be compensated in real time in a tidal wave disturbance environment, and the accuracy of ocean exploration is improved.

Description

technical field [0001] The present invention relates to the technical field of ocean exploration, and more specifically, to a seismic source device, an ocean exploration system and a control method for a vibrator. Background technique [0002] Marine geophysical prospecting can be referred to simply as marine geophysical prospecting, which is one of the methods to study ocean and marine geology through geophysical prospecting methods. At present, marine geophysical prospecting can be used to explore seabed oil and gas resources, seabed sedimentary deposits, seabed topography, marine seismic data and so on. [0003] The marine exploration system can realize marine geophysical prospecting through the method of marine seismic measurement, for example, using a vibrator to excite a vibration signal, which is reflected underwater to generate a corresponding reflection signal, so that the marine exploration system can acquire according to the received reflection signal prospecting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/38
CPCG01V1/3861G01V1/38G01V1/3817Y02A90/30
Inventor 谢玉洪李列欧阳敏袁全社童传新李林王大为盖永浩杨文博邓聪吴涛邱宇朱其
Owner CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
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