In the large Weyburn oil field, Saskatchewan (Canada), pumping parameters and rod vibration data are transmitted continuously from each well head by radio to the field base, located near the center of the producing wells. Each well site has a little antenna pointed toward the Field Base. This is a simple automated surface surveillance method, that saves a lot of time to the people that maintain the field, and leads to immediate recognision of pump failure or rod defects, and prompt remedy. This improves the oil production of the field relative to the time before this system was implemented.