Characterization of Water/Oil/Gas Emulsions and Foams Using
Low Field Nuclear Magnetic Resonance
Milad Saidian, Ahmad A. Abdul Majid, Manika Prasad, and Carolyn A. Koh
Summary: A method to characterize the emulsion properties in oil and gas producing wells at
downhole condition or pipelines
Description: A method to measure the bubble/droplet size distribution in oil and gas producing
wells and pipelines for flow assurance, fluid property analysis, and production evaluation using
low field Nuclear Magnetic Resonance (NMR) has been developed. In this method, multiple
Diffusion-Transverse Relaxation (T2) or Diffusion-Longitudinal Relaxation (T1) measurements are
required to calculate the average surface relaxivity. Comparison of the measured T1 and T2
spectra and diffusion coefficient at downhole conditions with the bulk responses of the
constituent fluids determines the dispersed and continuous phases, droplet/bubble size
distribution, and pressure-volume-temperature properties (e.g., bubble point and viscosity) of
the produced oil.
Main Advantages of this Invention
 Characterization of fluid in on-shore and subsea
pipelines, which can lead to a better understanding
of the possibility of hydrate formation
 Characterization of production fluid at downhole
conditions for oil and gas producing wells
 Allows for an evaluation of the oil, water, and gas
production from each perforation in a wellbore
Potential Areas of Application
 Oil and Gas Industry
 Medical MRI applications
T2 measurement of bulk oil, bulk water
and a synthetic water/oil emulsion
ID number: 15025
Intel ectual Property Status: US provisional patent 62/154,638.
Opportunity: We are seeking an exclusive or non-exclusive licensee for implementation of this
For more information contact:
William Vaughan, Director of Technology Transfer
Colorado School of Mines, 1500 Illinois Street, Guggenheim Hall Suite 314, Golden, CO 80401
Phone: 303-384-2555; e-mail: