Integrated device and method for measuring well dynamic fluid level

Abstract

The invention discloses an integrated device and method for measuring well dynamic fluid level; the device comprises an ant-explosion shell, a conveying pipe, an acoustic wave measuring mechanism and an electrical control unit; the conveying pipe is composed of a test pipe and an exhaust pipe; the sidewall of the test pipe is provided with an acoustic wave receiving gas pipe and a pressure measuring hole, the test pipe is provided with a gas storage chamber, the acoustic wave measuring mechanism comprises an explosion electromagnetic valve, a microphone, a pressure sensor and a casing electromagnetic valve, and the electrical control unit comprises a microcontroller unit, a communication module, a storage, and a signal processing module; the method comprises the steps of I, preparing for measurement; II, adjusting internal ambient temperature of the ant-explosion shell; III, detecting inner pressure of a well casing, and selecting and internal explosion or external explosion working mode to measure the dynamic fluid level; IV, transmitting data remotely, and processing the data. The internal explosion or external explosion working mode is employed to provide explosion sounding conditions, dynamic fluid level is measured continuously and accurately through the microphone, and the casing electromagnetic valve is mounted with affecting a worker's fluid injection and well flushing.

Description

technical field [0001] The invention belongs to the technical field of oil well dynamic liquid level measurement, and in particular relates to an integrated oil well dynamic liquid level measurement device and method. Background technique [0002] In the process of oil field production, the dynamic liquid level between the tubing and casing is an important indicator reflecting the liquid supply capacity of the formation, and an important basis for determining the reasonable submergence of the oil well pump and formulating a reasonable working system in oil production. The monitoring and analysis of the liquid level can directly determine the pump depth of the oil well, calculate the fluid pressure and static pressure at the bottom of the well, judge the matching between the production work system of the oil well and the energy of the formation, improve the working efficiency of the oil well, and ensure the stable production of the oil well. The traditional dynamic liquid lev...

AI Technical Summary

Problems solved by technology

Continuous testing for long periods of time is difficult due to the use of dangerous, bulky equipment

However, electric air guns and electric nitrogen cylinders are difficult to promote due to their complex process structure, high cost, and short service life.

In addition, when the dynamic liquid level is automatically measured, if the pressure in the well is too low, it is impossible to accurately measure the liquid level in real time when the casing is completely open. The measurement space must be closed to make the data accuracy of the dynamic liquid level measurement high. ; If the pressure in the well is too high, the high pressure will affect the transmission of infrasonic waves, and the pressure in the casing needs to be released. Therefore, there is a lack of an integrated oil well dynamic liquid level measurement device and method. Choose the working mode of implosion or explosion to measure the dynamic liquid level position of the oil well, avoiding unnecessary troubles caused by manual control caused by the traditional installation of manual ball valves

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