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Rotary wireless electricity energy and signal transmitting system for measurement-while-drilling instrument

A signal transmission system and wireless energy technology, applied in the field of oil and natural gas drilling, can solve problems such as poor safety and stability, complex structure, etc., and achieve the effect of reducing complexity, eliminating unsafe factors and hidden dangers

Active Publication Date: 2015-01-21
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the shortcomings of complex structure, poor safety and stability, etc. caused by the wire type and slip ring structure used in the short internode electric energy and signal transmission of current measuring instruments while drilling. Technology and the principle of carrier communication, realize the non-contact power and signal transmission between the sub-sections of the measuring instrument while drilling, improve the safety, stability and scalability of the power and signal transmission of the crushing measuring instrument, and reduce the maintenance cost

Method used

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  • Rotary wireless electricity energy and signal transmitting system for measurement-while-drilling instrument

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Embodiment Construction

[0021] The rotary wireless energy and signal transmission system for the measuring instrument while drilling of the present invention is based on the electromagnetic coupling technology and the theory of carrier communication, and the rotary wireless energy and signal transmission system is constructed at the joint of the short section of the measuring instrument while drilling to realize the short section It is composed of electric energy conversion circuit, carrier communication circuit and electromagnetic coupling mechanism for safe and stable power transmission and information interaction. Among them, the power conversion circuit includes a rectification and filtering module, a DC-DC module, a high-frequency inverter module, a power pickup module and a power conversion module. In the airtight cabin, the power pickup module and the power conversion module are placed in the airtight cabin of the control sub shell, and the low-frequency AC power generated by the mud pulse gene...

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Abstract

The invention discloses a rotary wireless electricity energy and signal transmitting system for a measurement-while-drilling instrument. Based on an electromagnetic coupling technique and carrier wave communication theory, the rotary wireless electricity energy and signal transmitting system is constructed at the short joint connection part of the measurement-while-drilling instrument, so that the electricity energy transmitting and information interaction among short joints are realized safely and stably, and the rotary wireless electricity energy and signal transmitting system comprises an electricity energy conversion circuit, a carrier wave communication circuit and an electromagnetic coupling mechanism; low-frequency alternating-current electricity energy generated by a mortar pulse power generator is subjected to alternating current-direct current-alternating current conversion by electricity energy conversion circuits in power supply short joints, and electricity energy is transmitted to the control short joints by the electromagnetic coupling mechanism in a non-contact mode, so that the wireless transmitting of electricity energy among short joints of the measurement-while-drilling instrument is realized; to-be-transmitted signals are modulated, demodulated, analyzed and processed by a carrier wave communication circuit, so that the wireless interaction of information among the short joints of the measurement-while-drilling instrument can be realized; the complexity of a connecting mechanism among the short joints is reduced, unsafe factors and hazards of lead type and slide ring type connecting modes are eliminated, and the stability, safety and expandability are improved.

Description

technical field [0001] The invention relates to a rotary wireless power and signal transmission system for measuring instruments while drilling, in particular to a non-contact power transmission and transmission between short sections of measuring instruments while drilling near the drill bit based on electromagnetic coupling and carrier communication technology. The signal interaction belongs to the field of oil and natural gas drilling. Background technique [0002] Oil resources are related to a country's economy, national defense and people's livelihood. The rapid economic development has led to an increasing demand for oil resources, and oil extraction has become increasingly important. With the advancement of science and technology, oil exploration and mining technologies continue to develop in the direction of automation and intelligence. [0003] Measurement-while-drilling (MWD) and logging-while-drilling (LWD) technologies are currently the key technologies in the ...

Claims

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Application Information

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IPC IPC(8): G08C17/02
Inventor 李绍辉马哲王海岩张景良白大鹏黄峰魏庆振刘郅轩杨春郭佳
Owner BC P INC CHINA NAT PETROLEUM CORP
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