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Preliminary results for the diffusion of water into fibre optic oil well sensors

Preliminary results for the diffusion of water into fibre optic oil well sensors
Preliminary results for the diffusion of water into fibre optic oil well sensors
Preliminary results are presented on a measurement technique for determination of water penetration into fibre optic sensors under high pressure, high temperature conditions. Both fibre optic sensors and communication fibres were subjected to prolonged treatment in heavy water at temperatures up to 250°C and pressures of 40 bar. Deuterium penetration is measured by a nuclear reaction technique based on a 3He micro-focussed ion beam, which permits two-dimensional mapping of the deuterium penetration into cleaved fibres. Water penetration can be detected whilst still confined to the cladding, well before any optical effects become apparent, permitting prediction of likely fibre lifetime under down-hole conditions after realistic experimental times.
Ion beam analysis, Fibre optics, Deuterium penetration
519-525
Hollands, R.
4968c23a-2b66-4bf4-9949-d34d1152efd0
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Clough, A.S.
3269f705-5c2c-42f7-a87c-420efe4f14c2
Peel, R.
960f2cfe-b7eb-4953-9dcb-9c0406f29ea4
Smith, R.
fd87fb70-2513-469b-9955-69c9224f146b
Hollands, R.
4968c23a-2b66-4bf4-9949-d34d1152efd0
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Clough, A.S.
3269f705-5c2c-42f7-a87c-420efe4f14c2
Peel, R.
960f2cfe-b7eb-4953-9dcb-9c0406f29ea4
Smith, R.
fd87fb70-2513-469b-9955-69c9224f146b

Hollands, R., Rutt, H.N., Clough, A.S., Peel, R. and Smith, R. (2001) Preliminary results for the diffusion of water into fibre optic oil well sensors. Nuclear Instruments and Methods in Physics Research Section B, 174 (4), 519-525. (doi:10.1016/S0168-583X(01)00318-4).

Record type: Article

Abstract

Preliminary results are presented on a measurement technique for determination of water penetration into fibre optic sensors under high pressure, high temperature conditions. Both fibre optic sensors and communication fibres were subjected to prolonged treatment in heavy water at temperatures up to 250°C and pressures of 40 bar. Deuterium penetration is measured by a nuclear reaction technique based on a 3He micro-focussed ion beam, which permits two-dimensional mapping of the deuterium penetration into cleaved fibres. Water penetration can be detected whilst still confined to the cladding, well before any optical effects become apparent, permitting prediction of likely fibre lifetime under down-hole conditions after realistic experimental times.

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Published date: 2001
Keywords: Ion beam analysis, Fibre optics, Deuterium penetration

Identifiers

Local EPrints ID: 13724
URI: http://eprints.soton.ac.uk/id/eprint/13724
PURE UUID: f15560ea-dc95-4fa9-958b-88f5371e8076

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Date deposited: 13 Jan 2005
Last modified: 15 Mar 2024 05:11

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Contributors

Author: R. Hollands
Author: H.N. Rutt
Author: A.S. Clough
Author: R. Peel
Author: R. Smith

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