Fiber Optic Technology for Reservoir Surveillance

Fiber-optic sensing technology for in-well applications has traditionally focused on temperature profiling. This has<br>limited the application of fiber-optic reservoir surveillance to recovery processes with a pronounced thermal signature.<br>Currently, novel fiber-optic technologies entering the market promise a much wider range of subsurface measurements. This<br>opens new avenues in well and reservoir management and highlights the opportunity for fiber-optics to become a pervasive<br>oilfield technology. In this paper we discuss field trials that combine Distributed Temperature Sensing (DTS), Distributed<br>Strain Sensing (DSS) and Distributed Acoustic Sensing (DAS). These trials demonstrate the potential of fiber-optic sensing<br>technology for well integrity monitoring, gas lift optimization, in-flow profiling and downhole seismic acquisition.