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Extreme Environment (Ruggedized)
The primary use of our ruggedized detectors is for oil and gas exploration. Our reputation for designing and manufacturing detectors capable of surviving use in the harsh environmental conditions of oil exploration has gained us wide recognition and acceptance in this industry.
Our detectors, as integral components of gamma ray logging tools, provide superior performance and survivability under the most extreme environmental conditions. The newer generation of exploration and production logging tools place incredible performance demands on scintillation-based sub-assemblies. Several patented features in Saint-Gobain crystal packages and our series of integrated detector designs provide gamma logging professionals significant advantages.
Features/Benefits
Wireline Typical Specification
- Unique glass to metal sealing technology and all-welded construction eliminates epoxy seals for high-temperature reliability
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Operating Temperature +25°C to +175°C (Gradient 3°C per minute maximum)
- Mechanical Survival Shock 100g @ 11ms – 3 shocks per axis; 2 axis total. (X & Z)
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Vibration Random 5GRMS 50-500Hz 15 minute duration per axis; 2 axis total
MWD Typical Specification
Titanium Sapphire Window Construction
- Unique glass to metal sealing technology and all-welded construction eliminates epoxy seals for high-temperature reliability
- Operating Temperature +25°C to +175°C (Gradient 3°C per minute maximum)
- Mechanical Survival Shock 1000g @ 1ms – 3 shocks per axis; 2 axis total. (X & Z)
- Vibration Random 20GRMS 30-1000Hz 30 minute duration per axis; 2 axis total
- Maximized crystal volume - Larger crystals provide increased count rates
- Thinner wall allows for larger crystal, more counts, and greater low energy sensitivity
- Stronger sapphire window is much thinner for increased light transmittance
- High strength sapphire-to-metal seals
Design Options
- Detectors can be customized for very specific applications
- All-welded hermetic package and glass-to-metal seal options to withstand the rugged Wireline & MWD operating environments
- Choice of scintillators including Polyscin® NaI(Tl), LaBr3, BGO, CsI(Tl) and LYSO
- LaBr3(Ce): Highest light output at temperature, fast counting for pulse neutron activated measurement, more accurate energy level determination
- NaI(Tl): Versatile, industry standard for wireline and MWD applications
- CsI(Tl): One of the brightest scintillator with very good stopping power
- BGO: High gamma stopping power for wireline logging, without intrinsic radioactivity
- Integration with photomultiplier tubes available, thus allowing for unmatched survivability and performance of a fully functioning gamma-ray detector system