An automatic tuning type underground wireless signal transmission system

A wireless signal and transmission system technology, which is applied to multiple resonant circuits tuned to the same frequency, building, etc., can solve the problem of inability to take into account transmission quality and transmission efficiency, and achieve the effect of high signal-to-noise ratio and transmission efficiency.

Active Publication Date: 2021-11-19
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an automatic tuning type underground wireless signal transmission system to solve the problem that the existing system cannot take into account the transmission quality and transmission efficiency due to the use of transmitting coils

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  • An automatic tuning type underground wireless signal transmission system
  • An automatic tuning type underground wireless signal transmission system
  • An automatic tuning type underground wireless signal transmission system

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0033] In order to achieve the above object, the present invention proposes an automatic tuning type underground wireless signal transmission system, such as figure 1 As shown, including: downhole sending module 1 and wellhead antenna 5;

[0034] The downhole sending module 1 is respectively connected with the drilling tool 9 and the logging-while-drilling instrument in the tubing 7; wherein, t...

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Abstract

The invention discloses an automatic tuning type downhole wireless signal transmission system, comprising: a downhole sending module and a wellhead antenna; It is located at the drill bit of the drilling tool; the drilling tool includes an insulating short joint, which is placed horizontally below the drilling tool motor, and is located between the drill pipe and the drill collar of the drilling tool to achieve electrical isolation between the drill pipe and the drill collar; downhole The positive pole of the sending module is connected to the end of the insulating nipple close to the drill pipe, the negative pole of the downhole sending module is connected to the end of the insulating nipple near the drill collar; the wellhead antenna is placed at the wellhead, one end is connected to the tubing, and the other end is grounded; the downhole sending module is used Receive the logging-while-drilling data measured by the logging-while-drilling tool, and convert the obtained logging-while-drilling data into electrical signals by means of direct drive. After automatic tuning and amplification, they are transmitted to the wellhead antenna through the tubing. The present invention transmits through the direct drive mode, and the transmission efficiency is high.

Description

technical field [0001] The invention belongs to the field of oil and gas well testing operations, and more specifically relates to an automatic tuning type downhole wireless signal transmission system. Background technique [0002] In the process of oil and gas well surveying and exploitation, it is very important to obtain downhole real-time measurement data. It allows ground personnel to take various measures in time according to the real-time situation at the bottom of the well, adjust the testing procedures, solve the blindness of testing, and reduce the Test the error and rework of the switch well operation judgment to improve the success rate of a test. With the development of measurement-while-drilling and logging-while-drilling technology, more sensors are installed near the drill bit, because the closer the sensor is to the drill bit during the drilling process, the more accurate and timely the formation information it obtains. As oil and gas wells get deeper and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/13H03J3/24
CPCH03J3/24
Inventor 陈庆杨振胡皓然杨思谛余沐阳刘昶李红斌
Owner HUAZHONG UNIV OF SCI & TECH
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