Abstract This paper will present a performance comparison of two intelligent completion technologies installed in six existing water injection wells. The first technology is an intelligent completion system with electric valves and the second is a hydraulic valve system with an electro-hydraulic control system. For comparison, a total of six wells were installed, three with all-electric and three with electro-hydraulic, in existing wells with similar reservoir and injection conditions. Both systems included permanent fiber optics to calculate the injected flow in each zone in real-time. The main objective of the technology test was to define the best technology to develop an intelligent mature onshore field. A total of six wells were selected: four in the Chichimene field and two in the Castilla field, both located in the Llanos Heavy Oil Basin in Colombia. In the first field, two wells used electrical technology and two wells used electro-hydraulic technology (one of the wells was installed inside 5-½" liner). In the other field, one electric and one electro-hydraulic well were installed. This distribution was made with the purpose of obtaining performance data for each technology in each field. The six wells were successfully installed in a period of six months without cost and time deviations or HSE incidents. In general, the electrical system was more flexible during calibrations and installation, requiring less preparation and installation time. On the other hand, the electro-hydraulic system was adequate for wells with small diameters (5-½"), since electrical technology has not been developed for this diameter. When precision of choke position and fast speed of actuation was required, the electric valve offered the best performance. The document will include details about technology selection, planning and installation process and the performance analysis obtained from each option during detailed planning, workshop and well-site preparation, downhole and surface equipment installation, and fiber optics calibration before injection start-up. The benefits and restrictions of each of the technologies will also be shown.