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Global
Oilfield firsts:
1995
Downhole fiber-optic sensing
2004
Subsea fiber-optic deployment
2006
Hybrid fiber-optic electric cable
2008
Sandface fiber-optic deployment
2010
Fiber-optic pressure gauge
2015
Hydraulic fracturing assurance
Since 1995, when Schlumberger began using fiber optics for distributed temperature sensing (DTS) in wells, R&D has been focused on enhancing fiber reliability. Optical fiber tends to degrade when exposed to high levels of hydrogen or high temperatures. The fiber begins to darken, causing incorrect temperature readings.
Schlumberger then pioneered accelerated aging tests for optical fibers at high temperatures. WellWatcher BriteBlue HT* high-temperature multimode DTS fiber, which resulted from this research, increased light transmission by almost 50-fold. The results were exceptional resistance to hydrogen, longer life, faster response time, and better spatial resolution.
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