In appropriate cases, the geophysics and logistical aspects of a producing reservoir can present a commercial cost-to-benefit argument for the use of permanently installed seafloor receivers. PGS has developed the OptoSeis fiber optic system to meet this emerging market:
- No in-sea electronics, all fiber optics, means lightweight, safe and robust operations over at least two decades without intervention.
- High dynamic range, low noise and crosstalk, high channel count, deep water capability, multi-component capability.
- Enables both periodic and continuous (passive) 4D acquisition.
- Low operating cost, higher repeatability, more frequent updates of the reservoir model; the ultimate reservoir management solution.
In the first permanent monitoring project for deepwater offshore Brazil, PGS installed the OptoSeis fiber optic system over the Jubarte field, owned and operated by Petrobras. Installation began in late-2012.
Reservoir monitoring projects are increasingly moving to challenging settings, including deep water, areas affected by obstructions and production infrastructure, and reservoirs with a weak 4D signal. In some cases, permanent monitoring installations with the PGS fiber optic Optoseis technology is more appropriate than towed streamer 4D.
Video: Deepwater PRM in Jubarte
Click on the image above to view presentation of the PGS fiber optic OptoSeis permanent monitoring technology.