A dynamic liquid level meter for infrasound wave emission and reception and its method

Abstract

The invention discloses a working fluid level gauge with infrasonic wave transmitting and receiving functions for measuring the depth of a working fluid level of an oil well. The working fluid level gauge comprises a single-chip microcomputer module, an electric / acoustic conversion module used for converting electric signals into infrasonic waves, an infrasonic wave transmitting module used for transmitting the infrasonic waves, an acoustic / electric conversion module used for converting the infrasonic waves into electric signals, an infrasonic wave receiving module, and a liquid crystal display module connected with the single-chip microcomputer module, wherein one end of the electric / acoustic conversion module is connected with the single-chip microcomputer module, and the other end of the electric / acoustic conversion module is connected with the infrasonic wave transmitting module; and one end of the acoustic / electric conversion module is connected with the single-chip microcomputer module, and the other end of the acoustic / electric conversion module is connected with the infrasonic wave receiving module. The working fluid level gauge provided by the invention has the advantages that the frequency and energy of the infrasonic waves can be controlled by adopting the single-chip microcomputer control technology, so that the depth of the working fluid level within 3,000 meters underground can be accurately measured.

Description

technical field [0001] The invention mainly relates to the technical field of petroleum exploitation and the field of automation equipment, in particular to a dynamic liquid level instrument with infrasonic wave emitting and receiving functions and a method thereof. Background technique [0002] The dynamic liquid level is an important data commonly used in the dynamic analysis of oilfield development. In the process of oil production in the oilfield, it is urgent to accurately measure the liquid level height in the oil well, and then continuously monitor the oil well liquid level in real time to prevent well leakage and reduce energy consumption. [0003] In the prior art, the method of testing the dynamic liquid level is bullet explosion echo measurement: that is, the bullet explosion is used to generate sound waves at the wellhead, and the sound waves encounter the liquid surface and reflect to the wellhead, and the liquid surface depth is calculated by recording the sound...

AI Technical Summary

Problems solved by technology

Although the bullet explosion echo measurement can realize the depth measurement of the moving liquid level in the oil well, it also has the following defects: the sound waves generated by the bullet explosion have a wide frequency band, including infrasonic waves, sound waves and ultrasonic waves. Divergence, serious energy dissipation, which brings troubles for accurate timing of receiving reflected echoes; using bullet explosions, each measurement needs to be exploded once, which increases production costs and causes certain pollution to the surrounding environment; using bullet explosions The generated high and low frequency sound waves are mixed, which brings great difficulties to DSP filtering technology

Images