Design and research of deep-sea RMR liquid level identification and control system based on image recognition

Abstract:

Riserless mud recovery drilling （RMR） is an emerging green and environmentally friendly drilling technology aimed at solving the problems of material loss and environmental pollution caused by mud discharge in open water drilling without mud recovery channels. The innovative mud recovery liquid level identification and control system solves the problem of identifying the interface between mud and seawater in the turbid field of open water drilling. The system consists of the mud level identification system and mud level control system. Firstly， the collected images of mud and seawater are transmitted to the mud level identification system to obtain the measured mud level. Then， based on the deviation between the measured mud level and the preset mud level， the mud level control system is used to automatically adjust the pump volume to maintain the wellhead mud level at the designed level. By building the land testing platform for experimentation， it has been verified that the RMR liquid level identification and control system can accurately identify the mud level and automatically control the pump flow rate， and can automatically respond to well kick and leakage. The overall performance of the system is reliable， achieving the original innovation of deep-sea drilling technology equipment.

Key words:RMR;image recognition;mud level identification;mud level control;PID control