A marine controllable source electromagnetic detection transmitter underwater device and its control method

An underwater device and electromagnetic detection technology, which is applied in the direction of electromagnetic wave detection, etc., can solve the problems of poor instantaneous output electromagnetic wave, large size and weight of the transmitter, and inappropriateness, so as to meet the needs of marine resource exploration and reduce the loss of the device. , the effect of improving efficiency

Inactive Publication Date: 2017-05-24
BEIJING UNIV OF TECH
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Problems solved by technology

At present, the transmitter has a large volume and weight, serious heat generation, and is not suitable for underwater sealing. In addition, the transient performance of the output electromagnetic wave is not good, which cannot meet the actual exploration needs of the oil industry.

Method used

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  • A marine controllable source electromagnetic detection transmitter underwater device and its control method
  • A marine controllable source electromagnetic detection transmitter underwater device and its control method
  • A marine controllable source electromagnetic detection transmitter underwater device and its control method

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Embodiment Construction

[0044] The specific embodiment of the invention will be described with reference to the drawings.

[0045] According to the underwater device of a marine controllable source electromagnetic detection transmitter and its control method according to the present invention, the tow cable is used to drag the towing body to move and emit electromagnetic waves to excite the detected target on the seabed, and the receiver detects its electromagnetic induction. Signals, so as to obtain the electrical structure information of the deep medium below the seabed, and reveal the bottom structure of the seabed and the distribution of mineral resources such as oil and gas.

[0046] An underwater device of an ocean controllable source electromagnetic detection transmitter, comprising: a full-bridge DC / DC converter, a transmitting bridge, electrodes, a controller and a carrier controller, such as figure 1 shown.

[0047] The full-bridge DC / DC converter includes an inverter bridge, a high-freque...

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Abstract

The invention relates to an ocean controllable source electromagnetic detecting transmitter underwater device and a control method thereof, and belongs to the technical field of ocean electromagnetic detection. The device comprises a full-bridge DC / DC converter, a transmitting bridge, an electrode, a controller and a carrier wave modulator. According to the control method, high-power controllable source variable frequency electromagnetic waves are transmitted in seawater through the cooperative work of devices of all parts. The device is supplied with power through a direct current power source and has the advantages of being small in size, reliable in performance and high in efficiency and automation degree, and the requirements for the mounting size and radiating of an underwater towed body can be met. A zero switching loss technology and a current zero-cross detection technology are adopted in the control method, direct current carrier communication is adopted for the communication between an upper computer and underwater, and communication cables or optical fibers do not exist.

Description

technical field [0001] The invention relates to an underwater device of a marine controllable source electromagnetic detection transmitter and a control method thereof, belonging to the technical field of marine electromagnetic detection. Background technique [0002] In the process of exploration and development of marine resources, due to high drilling costs and high investment risks, major oil companies in the world must carry out comprehensive exploration work using various marine geophysical methods such as seismic, gravity, and magnetic force before offshore drilling. Improve drilling success rate. Marine controlled-source electromagnetic detection has the characteristics of being able to distinguish the properties of oil and water in traps and reveal "high-resistivity bodies" covered by volcanic rocks, and has become one of the most important means to reduce the drilling risk of deep-water oil and gas resources. The controllable source marine electromagnetic explorat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/12
Inventor 张一鸣陶海军史志富任喜国曾志辉朱学政王旭红
Owner BEIJING UNIV OF TECH
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