Optical fiber system for saline concentration measurement in drilling fluids

L. A. C. Caetano; S. A. B. Fontoura; P. I. Torres; L. C. G. Valente

doi:10.1117/12.437104

14 August 2001 Optical fiber system for saline concentration measurement in drilling fluids

L. A. C. Caetano, S. A. B. Fontoura, P. I. Torres, L. C. G. Valente

Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437104
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina

Abstract

Laboratory setups are used to simulate real conditions in which drilling fluid and shales interact during an oil well drilling process. The present work describes the development of fiber optic systems capable of measuring the ionic diffusion in water-based fluids under high pressure. Two alternatives have been tested and calibrations are presented for both. The most successful one was tested in a real experiment in which the concentration of CaCl₂ has been continuously measured during five days. Starting from pure water, the final ionic concentration measured by this method was compared with the result from chemical analysis of the fluid with very good agreement.

Citation Download Citation

L. A. C. Caetano, S. A. B. Fontoura, P. I. Torres, and L. C. G. Valente "Optical fiber system for saline concentration measurement in drilling fluids", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); https://doi.org/10.1117/12.437104

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