Robust determination of surface relaxivity from nuclear magnetic resonance DT(2) measurements

Journal of Magnetic Resonance
Zhi-Xiang LuoYi-Qiao Song

Abstract

Nuclear magnetic resonance (NMR) is a powerful tool to probe into geological materials such as hydrocarbon reservoir rocks and groundwater aquifers. It is unique in its ability to obtain in situ the fluid type and the pore size distributions (PSD). The T1 and T2 relaxation times are closely related to the pore geometry through the parameter called surface relaxivity. This parameter is critical for converting the relaxation time distribution into the PSD and so is key to accurately predicting permeability. The conventional way to determine the surface relaxivity ρ2 had required independent laboratory measurements of the pore size. Recently Zielinski et al. proposed a restricted diffusion model to extract the surface relaxivity from the NMR diffusion-T2 relaxation (DT2) measurement. Although this method significantly improved the ability to directly extract surface relaxivity from a pure NMR measurement, there are inconsistencies with their model and it relies on a number of preset parameters. Here we propose an improved signal model to incorporate a scalable LT and extend their method to extract the surface relaxivity based on analyzing multiple DT2 maps with varied diffusion observation time. With multiple diffusion observation...Continue Reading

References

Apr 1, 1993·Physical Review. B, Condensed Matter·P P MitraL M Schwartz
Jun 15, 1992·Physical Review Letters·P P Mitra Le Doussal P
Nov 22, 1993·Physical Review Letters·J H StrangeE G Smith
Sep 7, 2001·Physical Review Letters·R W MairR L Walsworth
Jul 10, 2003·Magnetic Resonance Imaging·M D HürlimannG J Hirasaki
May 27, 2004·Ground Water·Anatoly LegchenkoJean-Michel Vouillamoz
Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P J McDonaldL Monteilhet
Dec 27, 2005·The Journal of Physical Chemistry. B·Eddy W HansenEllen Weng
Mar 13, 2014·Journal of Magnetic Resonance·Yan Zhang, Bernhard Blümich

❮ Previous
Next ❯

Citations

Jul 3, 2016·Journal of Magnetic Resonance·Yan ZhangYi-Qiao Song
Jan 12, 2021·Journal of Magnetic Resonance·Rodrigo de Oliveira-SilvaTito José Bonagamba
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Valeria StagnoSilvia Capuani

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.