Underground while-drilling noise colleting system

A noise-while-drilling technology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve problems such as loss and distortion

Active Publication Date: 2016-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So this is a lossy, distorted way of getting noise

Method used

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  • Underground while-drilling noise colleting system
  • Underground while-drilling noise colleting system
  • Underground while-drilling noise colleting system

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Embodiment Construction

[0046] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0047] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0048] figure 1 A schematic structural diagram of ...

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Abstract

The invention discloses an underground while-drilling noise colleting system. The underground while-drilling noise colleting system comprises an underground while-drilling noise colleting device and a drill collar. The underground while-drilling noise colleting device comprises sound wave receiving transducers and a while-drilling receiving circuit, wherein the sound wave receiving transducers are used for generating vibration under the effect of underground environmental noise, further generating corresponding simulation noise signals and achieving conversion from sound wave signals to electric signals; the while-drilling receiving circuit is connected with the sound wave receiving transducers and used for converting the simulation noise signals transmitted by the sound wave receiving transducers into digital noise signals and then storing and / or sending the digital noise signals outwards. As the while-drilling noise colleting system collects underground noise at the position close to a drill, and the underground noise is not transmitted for a long distance, the frequency of the underground noise is not also damaged, and the range of the underground noise is not also reduced.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to an underground noise acquisition system while drilling. Background technique [0002] During the drilling process, there will be a lot of drilling environmental noise, which has a wide range of sources and a wide frequency distribution. The first type of drilling environmental noise is the noise generated by the rotation of the drill bit to break the rock. This noise is related to the actual formation lithology, and its frequency and amplitude also change with the change of the formation lithology. The frequency range of the noise is 0-3.5kHz. The second type of drilling environmental noise is the noise generated when drilling fluid circulates, and its frequency ranges from 1 to 2.3 kHz. In addition, the random collision of the drilling tool downhole (such as the collision between the drill string and the well wall) will also generate drilling env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 朱祖扬陆黄生吴海燕吴金平郑奕挺辛鹏来
Owner CHINA PETROLEUM & CHEM CORP
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