The Design of Intelligent Control System for Well Killing

Choke killing is a common method to control well kick and implement well pressure control of oil and gas in the process of drilling. By adjusting choke valve opening, casing pressure and standpipe pressure can be controlled to maintain pressure balance in well and prevent well blowout. In this design, fuzzy control and expert experiences are effectively applied in parameter self adjusting in the killing control system, and the killing process is thus intelligently controlled. It solves many problems that other control methods are unable to solve when the mathematical model of objects to be controlled is unclear. The implementation of the system is simple and easy and the computation is small. It is an outstanding control scheme with high performance and price ratio.