Delivering advanced solutions to subsea projects

Odassea Subsea Fiber Optic Solution is the first distributed acoustic sensing solution for subsea wells. The technology platform enables operators to execute intervention-less seismic imaging and reservoir diagnostics to reduce total cost of ownership while improving reservoir knowledge.

Offshore Technology Conference 2021

Spotlight On New Technology® Award

Odassea Subsea Fiber Optic Solution, an advanced downhole fiber optic sensing system, wins OTC Spotlight on New Technology Award® (SONT). ExxonMobil selected the solution for its Payara development project in Guyana.


Fiber optic sensing solution for subsea wells  

The Halliburton Odassea Subsea Fiber Optic Solution provides topside fiber optic sensing of subsea wells using distributed acoustic (DAS) and distributed temperature (DTS) sensing. It delivers lower total cost of ownership for reservoir and production monitoring with real-time analytics for reservoir diagnostics, well integrity, and 4D seismic imaging. 

Topside fiber optic sensing of subsea wells requires advanced optical engineering solutions to compensate for the reduced acoustic bandwidth, optical losses, and back reflections accumulated through umbilicals, multiple wet- and dry-mate optical connectors, splices, optical feedthrough systems, and downhole fibers.  

To address these issues, the Odassea subsea fiber network limits the sensing fiber only to the downhole fiber in both upper and lower completions. This enables dry-tree equivalent acoustic sampling frequencies of 10+ kHz, while eliminating all back reflections from the multiple subsea connectors.  

Odassea can provide dry-tree equivalent acoustic sensing performance in both upper and lower completions regardless of the subsea tie-back distance, leveraging Halliburton’s extensive experience in fiber optic sensing, borehole seismic, completions, real-time data acquisition, processing, and analytics. 


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