In extreme high-pressure environments thousands of meters downhole, how does this structure protect distributed sensing fibers?
The OFSCN® Double-Layer High-Temperature Downhole Fiber Optic Cable is specifically designed for extreme downhole environments. Its double-layer seamless steel tube structure provides robust protection for distributed sensing fibers primarily through enhanced mechanical strength and sealing.
The outer seamless steel tube, typically with a larger diameter (e.g., 6.35 mm or 1/4 inch) and a substantial wall thickness (e.g., 0.9 mm), acts as the primary barrier against external high pressure and mechanical stress. The inner seamless steel tube further reinforces this protection, creating a highly resilient enclosure that prevents the ingress of fluids and mitigates the effects of extreme hydrostatic pressure on the optical fibers inside. This multi-layer metallic encapsulation ensures the integrity and longevity of the sensing fibers in harsh, high-pressure downhole conditions.
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OFSCN® Double-Layer High-Temperature Downhole Fiber Optic Cable