Key Technologies for Intelligent Operation and Maintenance of Deep Drilling Top Drive Powered by Digital Twin

Abstract

To meet the key requirements of development of oil and gas resources in 10 000 m deep formation and intelligent operation and maintenance （O & M） of top drive in deep drilling， the key issues related to the prognostics and health management （PHM） of top drive were summarized， and a digital twin PHM O&M framework for top drive in deep drilling was proposed. The O & M framework mainly includes physical space of top drive， intelligent scene perception module， multi-level and multi-domain DT model， as well as risk assessment and predictive maintenance methods for model and data fusion. The O & M framework can simulate the working status of the top drive gearbox， display gear speed， lubricating oil temperature， bear vibration and impact， simulate the working status of the back-up tong and its hydraulic control system， display internal holding force， moment and pipeline pressure， simulate the working status of the link tilting system and its hydraulic system， and display the inclination angle of the link， etc. The O & M framework has good industrial applicability and universality of top drive， and can fully utilize the supporting system of the current top drive for expansion， adapting to the key operation and maintenance needs in the top drive drilling process. The research results provide conceptual guidance and technical reference for the practical application deployment of digital twin system of top drive.

Keywords

• deep drilling top drive
• digital twin
• phm
• major energy equipment
• intelligent operation and maintenance
• risk assessment