Inline process refractometer based on image defocusing

Alexandra Bobe; Anna Voznesenskaya; Vadim Polyakov

doi:10.1117/12.2597069

12 September 2021 Inline process refractometer based on image defocusing

Alexandra Bobe, Anna Voznesenskaya, Vadim Polyakov

Proceedings Volume 11876, Optical Instrument Science, Technology, and Applications II; 118760L (2021) https://doi.org/10.1117/12.2597069
Event: SPIE Optical Systems Design, 2021, Online Only

Abstract

In oil and gas production, it is important to determine the type and chemical composition of the formation fluids in the pipeline in real time. Different types of the hydrocarbon formations present in the downhole environment have distinct optical characteristics, such as spectral transmittance, diffusion, fluorescence and refractive index. In the formation sampling and testing, knowing the refractive index of a downhole fluid makes it possible to identify the fluid (water, gas or oil), estimate various properties, such as salinity and crude oil density, and monitor the cleanup processes. The paper describes a new design for an on-axis inline process refractometer for continuous fluid measurements using a defocusing imaging technique. Design principles for the refractometer are discussed, the dependence of the defocus effect on the refractive index is calculated. Experimental energy distributions for different liquid samples are obtained and analysed.

Conference Presentation

Citation Download Citation

Alexandra Bobe, Anna Voznesenskaya, and Vadim Polyakov "Inline process refractometer based on image defocusing", Proc. SPIE 11876, Optical Instrument Science, Technology, and Applications II, 118760L (12 September 2021); https://doi.org/10.1117/12.2597069

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available