Multi-frequency rock core sound velocity measuring device

A measuring device, multi-frequency technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, using sonic/ultrasonic/infrasonic waves to analyze solids, etc., can solve the problem of inability to measure the sound velocity of cores, and achieve the effect of rapid measurement

Active Publication Date: 2021-10-15
SOUTHWEST PETROLEUM UNIV +1
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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that the existing technology cannot quickly measure the sound velocity of the core und

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  • Multi-frequency rock core sound velocity measuring device
  • Multi-frequency rock core sound velocity measuring device

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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0036] As mentioned in the background art, the prior art cannot rapidly measure the core sound velocity under the condition of high temperature and high pressure and in the case of multiple frequencies.

[0037] Therefore, the application proposes a multi-frequency core sound velocity measurement device, such as figure 1 Shown is a schematic structural diagram of a multi-frequency core sound velocity measurement device proposed in the embodiment of the present application, including:

[00...

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Abstract

The invention discloses a multi-frequency rock core sound velocity measuring device. The device comprises a fixing device used for fixing a rock core and heating and pressurizing the rock core according to a preset condition; a transmitting end sound wave probe which is respectively connected with a first end of a control unit and one end of the fixing device and is used for transmitting sound wave signals to the rock core; a receiving end sound wave probe which is respectively connected with a second end of the control unit and the other end of the fixing device and is used for receiving sound wave signals transmitted by the transmitting end sound wave probe; and a control unit which is used for controlling the transmitting end sound wave probe to transmit sound wave signals with different frequencies, receiving the sound wave signals received by the receiving end sound wave probe, and determining the sound velocity of a rock core according to sound wave signals received by the receiving end sound wave probe; the sound velocity of the rock core can be rapidly measured under the conditions of high temperature, high pressure and multiple frequencies.

Description

technical field [0001] The invention belongs to the technical field of core sound velocity measurement, in particular to a multi-frequency core sound velocity measurement device. Background technique [0002] The existence of fluid in the rock pores will cause the dispersion of the sound wave velocity, and the dispersion phenomenon will be different with the fluid content in the pores. According to the measurement, its porosity is 35%, and its permeability is 8.7×10-12m2. It is measured by the stress-strain method and ultrasonic measurement technology: when the saturation reaches 90%, the velocity measured by ultrasonic and the velocity measured by low frequency The difference reaches 32%. In order to study the influence of pore fluid on the sound velocity of cores with different permeability, the stress-strain method is usually used to measure the sound wave velocity in the 2-2000Hz frequency band, and the ultrasonic pulse penetration method is used to measure the sound wav...

Claims

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Application Information

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IPC IPC(8): G01N29/07G01N29/22G01H17/00
CPCG01N29/07G01N29/223G01H17/00G01N2291/0232G01N33/241G01N29/348G01N2291/011G01N2291/02441G01N29/345
Inventor 陈一健陈星宇张伦平涂超凡陈云胜王柯景
Owner SOUTHWEST PETROLEUM UNIV
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