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Lock-type underground sound wave signal ground receiving and display system

A technology of acoustic signal and ground reception, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc. It can solve the problems of downhole noise interference, transmission cable wear or twisting, high cost, etc., and achieves strong anti-noise interference ability , Wide range of applications and strong applicability

Active Publication Date: 2021-02-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Wired transmission: Although it can realize fast and large-scale transmission of downhole information, the rotation of the drill string during the drilling process will easily cause the transmission cable to be worn or twisted, affecting normal drilling
[0005] (2) Drilling fluid pulse transmission: The pressure wave of drilling fluid is used as the transmission carrier, which has a strong dependence on drilling fluid, and has disadvantages such as slow transmission rate, susceptibility to downhole noise interference, and inability to realize two-way information transmission.
[0006] (3) Electromagnetic wave transmission: Although it gets rid of the dependence on drilling fluid and can realize two-way transmission of downhole information, it has the disadvantages of dependence on the formation, large attenuation in the formation, poor versatility, and high cost.

Method used

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  • Lock-type underground sound wave signal ground receiving and display system
  • Lock-type underground sound wave signal ground receiving and display system
  • Lock-type underground sound wave signal ground receiving and display system

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Embodiment Construction

[0040] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

[0041] In the description of the present invention, it should be noted that the direction of the drill string in the well is figure 1 in the vertical direction; the terms "upper", "lower", "top", "bottom", etc. indicate the orientation or positional relationship based on figure 1 The positional relationship shown is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention .

[0042] see figure 1 , figure 1 It is a schematic diagram...

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Abstract

The invention provides a locking type downhole acoustic signal ground receiving and display system, which belongs to the field of oil and natural gas drilling engineering, and can realize drilling alignment under the premise of normal circulation of drilling fluid and without changing the external size of the drill string and the structure of the internal flow channel. Real-time accurate detection, identification and fast decoding display of acoustic signals in column channels. The locking type ground receiving and displaying system for downhole acoustic signals includes an acoustic signal receiving and converting device arranged on the surface of the drill string at the wellhead and a wireless signal receiving display arranged on the surface of the drill floor; the acoustic signal receiving and converting device is arranged on the drilling fluid flow channel The outside includes a signal decoding circuit, a signal conversion circuit, a wireless signal transmitting circuit connected in sequence, and an acoustic signal receiving element connected with the signal decoding circuit.

Description

technical field [0001] The invention relates to the field of oil and natural gas drilling engineering, and relates to a drilling-while-drilling information transmission system, in particular to a locking type underground acoustic signal ground receiving and displaying system. Background technique [0002] According to the current geological conditions and natural environmental conditions encountered in the exploitation of oil and gas resources in the world, the future oil drilling industry will encounter severe challenges of more complex geological conditions and harsher natural environments. Therefore, the downhole process monitoring of oil and gas drilling has put forward higher requirements. requirements. [0003] The high-speed transmission and effective acquisition of downhole information is the key to accurate monitoring of downhole processes and the key technology to achieve fast and high-quality drilling. The downhole information transmission methods that have been ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/16
CPCE21B47/16
Inventor 王庆刘永旺管志川李志刚赵国山都振川
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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