Rugged telemetry system for coiled-tubing earth drilling

R. Stephen Weis; Brad M. Beadle

doi:10.1117/12.285607

2 September 1997 Rugged telemetry system for coiled-tubing earth drilling

R. Stephen Weis, Brad M. Beadle

Proceedings Volume 3180, Third Pacific Northwest Fiber Optic Sensor Workshop; (1997) https://doi.org/10.1117/12.285607
Event: Third Pacific Northwest Fiber Optic Sensor Workshop, 1997, Troutdale, OR, United States

Abstract

The development of a rugged optical fiber telemetry system for coiled-tubing earth-drilling is described. The transmitter and receiver of the telemetry system are located on the surface. A high temperature fiber cable connects a serial array of downhole modulators with the surface. Each modulator consists of an intrinsic fiber Bragg grating (FBG) fixed to a piezoelectric transducer (PZ). Each modulating signal causes a PZ to stretch its attached FBG, shifting the wavelength of the light reflected by the grating. The wavelength shift of the grating-reflected light is detected at the output using a Mach-Zehnder interferometer.

Citation Download Citation

R. Stephen Weis and Brad M. Beadle "Rugged telemetry system for coiled-tubing earth drilling", Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); https://doi.org/10.1117/12.285607

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