TheGeophysics
Optical fiber assembly for geophysics
Despite ongoing efforts to find alternative sources, oil still plays an important role in today’s global economy. Located all over the world, on land and in the sea, these “black gold” deposits are not infinite and are rare: 30 000 of them would be profitable. But how can we help geoscientists to discriminate between oil, gas, and water to evaluate the capacity and efficiency of a downhole well?
Majorconstraints
- High temperatures > 300 °C,
- High pressures > 1000 bars,
- Corrosive and abrasive environments: gas, oil, mud, sand, rocks,
- Hostile atmosphere: steam, harsh chemicals and hydrogen ingression.
Thechallenge
Help geoscientists discriminate between oil, gas and water in order to evaluate the capacity and efficiency of a downhole well.
SEDI-ATI fiber optic assemblies: their composition
The solution has to deal with the major constraints of this extreme environment such as temperatures above 300°C, high pressures exceeding 1000 bars, the presence of abrasive and corrosive environments (gas, oil, mud…), and a hostile atmosphere composed of water vapors or chemicals.
A real-time saver for geoscientists
The proposed fiber optic assembly offers real-time detection and differentiation between oil, gas and water fluids. Moreover, it is also a real-time saver for geoscientists because there is no need to extract mud for analysis.
SEDI-ATIsolution
SEDI-ATI offers a specialized geophysical optical fiber assembly involving a sapphire fiber assembly, a high-temperature coupler, a custom hermetic fiber optic feedthrough, and silica fibers. The assembly is protected by a strong, abrasion-chemical-heat resistant polymer.
Advantagesof the SEDI-ATI solution
- No need to extract mud for analysis,
- Real-time detection and differentiation between oil, gas and water fluids.
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