China University of Petroleum

Ocean University of China

Beihang University

Guijie Liu

Yonghong Liu

Baoping Cai

Xiaoyan Shao

Xincheng Li

Yingying Wang

Rui Zhang

Chao Yang

Yanping Zhang

Weifeng Ge

Zhongfei Sui

Chenyushu Wang

Zheng Yuan

Xuelin Liu

Wanhai Xu

Qibing Wu

Lei Gao

Hongyan Fan

Zhexian Zou

Rui He

Honghui Wang

Xiaolu Wu

Qilin Wu

Qiang Feng

Provided are an intelligent operation and maintenance optimization method and intelligent production optimization method for an offshore oil subsea production system (SPS), and a system, relating to the field of petroleum engineering. The operation and maintenance optimization method includes: determining whether there is a leak in an SPS; and if there is a leak, performing emergency repair; or if there is no leak, performing intelligent operation and maintenance optimization. The performing intelligent operation and maintenance optimization includes: calculating a static health index of the SPS based on ashore sensor status data and Christmas tree sensor data; obtaining dynamic health indexes at different moments through a Kalman filtering algorithm; and formulating an optimal maintenance strategy for the SPS with optimization objectives of maximizing toughness and minimizing a maintenance cost.

Intelligent operation and maintenance optimization method and intelligent production optimization method for offshore oil subsea production system (SPS), and system

The present disclosure belongs to the field of petroleum engineering, and specifically relates to a subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network. The subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network includes three steps: digital twin model establishment, degradation process re-prediction model establishment, and remaining useful life calculation model establishment. The subsea Christmas tree re-prediction system integrating Kalman filter and Bayesian network includes a subsea distribution unit information acquisition subsystem mounted on an subsea distribution unit, a subsea control module information acquisition subsystem mounted on a subsea control module, a subsea valve bank information acquisition subsystem mounted on a subsea valve bank, a wellhead mechanical module information acquisition subsystem mounted on a wellhead mechanical module, a subsea environmental information acquisition module mounted on a subsea control module, and a subsea Christmas tree digital twin subsystem mounted in an overwater control station.

Subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network

Growing community of inventors

Qingdao, China

Guijie Liu