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Proceedings Paper

Rugged telemetry system for coiled-tubing earth drilling
Author(s): R. Stephen Weis; Brad M. Beadle
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Paper 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.

Paper Details

Date Published: 2 September 1997
PDF: 6 pages
Proc. SPIE 3180, Third Pacific Northwest Fiber Optic Sensor Workshop, (2 September 1997); doi: 10.1117/12.285607
Show Author Affiliations
R. Stephen Weis, Texas Christian Univ. (United States)
Brad M. Beadle, Texas Christian Univ. (United States)

Published in SPIE Proceedings Vol. 3180:
Third Pacific Northwest Fiber Optic Sensor Workshop
Eric Udd; Chuck C. Jung, Editor(s)

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