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Impulse sound source microporous electrode detection system and use method thereof

A micro-hole electrode and detection system technology, applied in the field of drilling acoustic wave detection, can solve the problems of limited transmission power, discounted detection depth and accuracy, uneven resolution, etc., and achieve the effects of improving electrical performance, mining efficiency, and frequency bandwidth.

Pending Publication Date: 2021-11-23
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The monopole sound source is non-directional; the dipole sound source has certain directivity, but the resolution for different azimuths is not uniform; the phased array sound source can directional emission, which improves the azimuth resolution, but is limited by the downhole space , its size limitation will greatly reduce the detection depth and accuracy
At present, there is no sound source that takes into account both high and low frequencies, and the transmission power is limited

Method used

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  • Impulse sound source microporous electrode detection system and use method thereof
  • Impulse sound source microporous electrode detection system and use method thereof
  • Impulse sound source microporous electrode detection system and use method thereof

Examples

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Effect test

Embodiment 1

[0054] The invention provides a microporous electrode detection system for an impulse sound source, such as figure 2 As shown, the impulsive sound source microporous electrode detection system is used to obtain the acoustic wave velocity data of the formation and the reflected wave data of the reservoir interface, including a sound source generating device and a receiver array, and the sound source sound generating device includes an impulse sound The source microhole electrode T1 and the impulse sound source microhole electrode T2, the impulse sound source microhole electrode T1 is used to measure the formation sound velocity, which emits the first shear wave propagating along the well wall; the impulse sound source microhole The electrode T2 is used to detect the reservoir interface mode, and the second shear wave emitted by it propagates to the formation outside the well, reaches the upper interface of the reservoir and the lower interface of the reservoir and is reflected ...

Embodiment 2

[0063] The electrode structure is an important factor that affects the characteristics of the plasma impulse sound source. In order to explore the electrode structure that can generate larger shock waves, the advantages of microporous electrodes that are not easy to corrode and the advantages of large shock waves of pin plate electrodes are combined. optimization. This embodiment provides an optimized electrode structure, such as Figure 5 As shown, the high-voltage electrode rod 1 is made of stainless steel into a cuboid structure, the insulating glass fiber layer is wrapped on the outside of the cuboid structure and is consistent with the cross-sectional profile of the cuboid structure, and the four rows of micropores 3 are distributed in the cuboid structure on the four edges. Wherein, the side length of the cuboid structure is 3.535mm; the distance between two adjacent microholes 3 in each row of microholes 3 is 10mm, the diameter of the microholes 3 is 1mm, and the hole ...

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Abstract

The invention discloses an impulse sound source micropore electrode detection system and a use method thereof.The impulse sound source micropore electrode detection system is used for obtaining sound wave speed data of a stratum and reflected wave data of a reservoir interface and comprises a sound source generation device and a receiver array; the sound source sounding device comprises an impulse sound source micropore electrode T1 and an impulse sound source micropore electrode T2, and the impulse sound source micropore electrode T1 is used for measuring the sound velocity of a stratum and emitting a first transverse wave propagating along the well wall; the impulse sound source micropore electrode T2 is used for detecting a reservoir interface mode, and a second transverse wave emitted by the impulse sound source micropore electrode T2 is propagated to the stratum outside the well, reaches the reservoir upper interface and the reservoir lower interface and then is reflected back into the well; the receiver array is used for receiving a first transverse wave emitted by the impulse sound source micropore electrode T1 and a second transverse wave emitted by the impulse sound source micropore electrode T2 and transmitting the first transverse wave and the second transverse wave back to the ground in real time, a ground engineer extracts and processes information, and then the geological structure beside the detection well can be recognized in real time.

Description

technical field [0001] The invention belongs to the technical field of drilling sound wave detection, and in particular relates to a detection system of an impulse sound source microhole electrode and a method for using the same. Background technique [0002] Petroleum is non-renewable, it is difficult to explore, and the recovery rate is low. Considering the actual situation, how to exploit the underground oil resources to the greatest extent is the ultimate problem we have to solve. Therefore, for exploration, it is required to detect more accurately and farther, and the sound wave depth Detection technology came into being. Acoustic wave detection while drilling technology is a kind of sound field energy radiated from the sound source in the well to the geological structure beside the well as the incident wave during the drilling process, and receives the sound field reflected from the detection formation to detect and identify the geological structure beside the well. l...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/12E21B49/00
CPCE21B47/00E21B47/12E21B49/00
Inventor 高旭张露郑力玻陈翔刘豪王莹李丹红
Owner XI'AN PETROLEUM UNIVERSITY
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