May 2020 – Technical Webinar

BCGS Technical Talk – May 21, 2020

Speaker: Dr. Benjamin Birt, Qteq

Title: Borehole Magnetic Resonance Method and Applications

Date/Time: Thursday, May 21, 2020 @ 4:30pm PST

Location: Online Webinar

Abstract:

One of the more advanced tools in oil and gas industry is the nuclear magnetic resonance tool which has been used since the 70’s to characterise reservoirs for resource estimates. The measurement allows a better understanding/characterisation of a formation with a lithology independent total porosity value. In the last 5+ years this technology has been made available to other resource sectors through decreased size and costs and can play a critical role in determining resources and information required in geotechnical application. Especially in industries where the resource is stored with in the porosity system, whether it be as simple as water or more complex in-situ recovery mines. The log can also be combined with other geophysical logs to get better understanding of dry bulk density and salinity. This presentation introduces the physics of magnetic resonance measurement and the interpretation of the tool’s output. The Borehole Magnetic Resonance measurement can be further analysed using global or core calibrated coefficients to give information about grain size distribution, moveable water (fluid), bound water (fluid), and permeability or hydraulic conductivity as the measurement is sensitive to pore size geometry. The Borehole Magnetic Resonance log can be used by multiple disciplines in the same project – utilized for in situ moisture for mine production, greenfield exploration or a mine extension, while also providing information on tailings settling and geotechnical data on dam wall and downstream ground investigation for potential seepage paths. This presentation will walk through the BMR measurement, how to interpret a basic log and give some examples from several different industries.

Webinar:

A recording of this months webinar is available on Youtube.

Leave a Reply