A field trial to test fiber optic sensors for temperature and pressure measurements was completed in two temperature observation wells in a steam flood area of the West Coalinga Field in Coalinga, California. Objectives of the trial were to test a novel hydraulic deployment system that can easily install and retrieve fiper optic sensors from wellbores, and to test the data quality from a fiber optic Distributed Temperature Sensor (DTS) and a pressure sensor.Deployment of the temperature and pressure fiber optic sensors was successfully demonstrated by using the hydraulic deployment technique. Excellent data correlation was obtained between the DTS and the conventional wireline conveyed temperature survey tools. Similarly, the pressure sensor showed impressive resolution and dynamic response capabilities. Since the fiber optic system has the capability of providing continuous reservoir temperature and pressure data, reservoir management in primary or assisted recovery projects can be improved.
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