Design of An Intelligent Control System for the Drilling Process

The contradiction between supply and demand of resources and energy has become increasingly prominent. To alleviate the shortage of resource supply, it is urgent to develop deep geological drilling and unconventional resources/energy. However, traditional drilling technology can no longer meet the demands of deep geological drilling. This talk presents the intelligent control system of drilling process for complex geological environment. In the intelligent control systems, a three-dimensional spatial model for the formation characteristics field is established to describe the complex geological environment. And based on the model, the drilling trajectory is designed to obtain the optimal drilling trajectory and the drilling control constraints. Then, complex coupling control loops-based intelligent control is introduced to enhance the efficiency and guarantee the safety of drilling process. For remote monitoring and abnormal state warning of drilling process, a state monitoring technology with three-dimensional virtual visualization is investigated. Simulations and experiments are developed to verify the system technologies.