Development of remote and intelligent injection system used in oil field

ZHANG Rui， WAN Yi， ZHU Zhen-jie
（Key Laboratory of High-efficiency and Clean Mechanical Manufacture， Ministry of Education，
Shandong University，Jinan 250061，China）

Abstract： In order to solve the problems of low manually compound precision and automation level in oil field polymer injection system，uncontrolled injection flux and pressure in the mouth of a well，manual metering，manual operation and monitoring，programmable logic controller（PLC），Kingview， and field bus were combined to be used in polymer injection process. A remote and intelligent injection system was developed which is used in tertiary oil recovery. After the analysis of the principle of tertiary oil recovery，automated control process was optimized. Hardware system was designed which involves of material feeding，mixture，profile injection，detection and control. Logic system of programmable logic controller was established and used in remote polymer injection. Furthermore，monitoring system and network communication system were also designed. This remote and intelligent injection system was successfully used in oil filed. The results show that this system is safe and reliable. The precision of polymers and water proportion is above 90% and more than 3/4 work forces have been saved.
Key words： oil field；real-time monitoring；remote intelligent injection system； field bus