Monitoring system based on carbon fiber optical fiber composite rod and monitoring data interpretation method

Abstract

The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a monitoring system based on a carbon fiber optical fiber composite rod and a monitoring data interpretation method. According to the monitoring system based on the carbon fiber optical fiber composite rod, distributed optical fiber temperature monitoring, distributed optical fiber sound wave monitoring and single-point optical fiber grating pressure monitoring are integrated, and simultaneous monitoring of multiple parameters such as underground temperature, pressure and sound waves is achieved; the requirements on dynamic real-time monitoring of underground production in high-temperature, high-pressure and corrosive environments are met. The invention further discloses a shaft production state monitoring data interpretation method which can obtain the fluid flow, the water content, the oil well pump working state, the shaft sand outlet position, the shaft wax precipitation position and the shaft scaling position information in the shaft according to the temperature information, the sound wave information and the pressure information collected in the shaft. Accurate data support is provided for dynamic intelligent management and scientific decision-making of underground production.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploitation, and in particular relates to a monitoring system based on a carbon fiber optical fiber composite rod and a monitoring data interpretation method. Background technique [0002] In recent years, the development of technologies such as optical fiber sensing and intelligent computing has promoted the development of intelligent oilfield construction. Through real-time downhole monitoring technology, wellbore equipment and fluid production dynamics can be obtained, which can provide real-time production decision-making basis for field engineers, thereby improving the level of oilfield operation and management. Distributed fiber optic temperature monitoring technology and distributed fiber optic acoustic wave monitoring technology, as one of the key technologies in the construction of intelligent oilfields, have received extensive attention from professionals in the oil and gas field an...

AI Technical Summary

Problems solved by technology

However, the composite material coiled tubing intelligent oil recovery system can only test the temperature and pressure distribution of the wellbore. By analyzing the temperature change, it can be judged whether wax deposition occurs in the pipe, the wax deposition area and the location range, and the gas buried in the outer protective layer can be made to flow through a certain current. The internal cable heats up to remove wax, and the existing oil production system has limited monitoring functions, which cannot meet the requirements of monitoring multiple parameters such as fluid flow in the wellbore, water content, oil well pump working status, wellbore sand production status, wellbore wax deposition, and wellbore scaling. Unable to provide comprehensive data support for dynamic intelligent management and scientific decision-making of downhole production

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