Development of Geothermal Well Inhibitor Injection Equipment Based on IIoT
Aiming at scaling problem in high-temperature geothermal wells in Tibet,an inhibitor injection equipment was developed based on IIoT.The equipment contained five layers:field layer,control layer,operation layer,manage-ment layer,and enterprise layer.Field layer,control layer,and operation layer consisted of local system,which utilized S7-1200,touchscreen,and WinCC interface to achieve on-site monitoring.Production data such as injection pressure,flow rate,and depth were transmitted to cloud by Siemens industrial gateway(IoT 2050).Management layer and en-terprise layer consisted of remote system,in which manufacturing execution system(MES)was employed to monitor the inhibitor injection equipment of multiple wells and achieve multi-well production management.The equipment was on-site tested at a geothermal well in Gulu,Tibet.The equipment's inhibitor injection flow ranges from 0～60 L/h,pressure 0～2.5 MPa,and depth 0～300 m,meeting practical requirements.
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