Multi-parameter online monitoring and control system and manufacturing method during submersible pump operation

Abstract

The invention belongs to the technical field of optical fiber sensing, and discloses a multi-parameter on-line monitoring and control system during the operation of a submersible oil pump and a manufacturing method thereof. It is used to solve the problems that the existing sensing device has a short working life and cannot form a closed-loop control. The present invention includes an on-line monitoring system and an on-line monitoring and control system. The monitoring system includes an integrated optical fiber temperature and pressure sensor placed at the suction port of the submersible oil pump. The integrated optical fiber temperature and pressure sensor is connected with an optical fiber sensing signal demodulator. The optical fiber sensing signal demodulator is connected to the host computer, so as to realize the online monitoring of the working temperature and the working liquid level pressure of the submersible oil pump. On the one hand, the present invention obtains the working temperature of the deep well submersible pump in real time and the pressure signal reflecting its working liquid level; The purpose of oil pump work.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, and specifically relates to a multi-parameter online monitoring system and a manufacturing method during the operation of a submersible pump, which are used for monitoring and controlling multiple parameters such as temperature and liquid surface pressure during the operation of the submersible pump. Background technique [0002] As a non-renewable strategic resource, oil is particularly important in today's world, and the problem of low oil recovery has always been the core problem that plagues the oil industry. As an important oil extraction equipment, submersible pump plays an irreplaceable role in the process of oil extraction. Submersible electric pump units generally work in oil wells with a depth of 2000 meters or more. The harsh working environment such as high temperature, high pressure, and vibration seriously affects the safety and efficient operation of the unit. Therefo...

AI Technical Summary

Problems solved by technology

[0004] However, these sensing devices cannot be directly used to monitor the pressure parameters submerged into the liquid surface during the online operation of the submersible pump in the oil well, because the packaging method of the quartz tube will cause the quartz tube to vibrate due to the violent vibration of the submersible pump during the working process of the submersible pump. broken, resulting in a shorter working life of these sensing devices

In addition, these sensing devices do not directly use the downhole liquid level information obtained by the optical fiber sensor in real time for the feedback adjustment of the online working parameters of the submersible pump, and cannot form a closed-loop control

Images