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Nov 1, 2022 · On one hand, the fundamental petrophysical properties of reservoirs can be more precisely obtained with borehole NMR technology, such as porosity, saturation, pore-size distribution, permeability, wettability, etc., which are very important for reservoir evaluation and production prediction.
- An Experimental Study
Influence of wettability to petrophysical responses in low...
- Remote
The azimuthal homogeneity was brought to within 0.5 G by...
- Novel NMR Apparatus for Investigating an External Sample
A few dozen such instruments have been built and have been...
- A New Porous Media Research Frontier
NMR has emerged as the key measurement for evaluating these...
- An Experimental Study
Aug 14, 2023 · From these measurements, the estimation of petrophysical parameters, formation evaluation, and fluid typing can be achieved. Well logging is often referred to as the “eye” of petroleum geologists and reservoir engineers, as it allows them to visualize the formation downhole.
Feb 1, 2019 · A new quadrupolar magnet array design is proposed to aim at achieving azimuthal measurement to make NMR logging tools have the ability of downhole three-dimensional investigation. Combined with coil array, the azimuthal measurement can be achieved.
- Sihui Luo, Lizhi Xiao, Lizhi Xiao, Xin Li, Guangzhi Liao, Huabing Liu, Zhengduo Wang, Zhe Sun, Wei L...
- 2019
Mar 1, 2021 · The signal of borehole NMR is almost always detected by echo trains and analyzed by using Laplace transform methods. The measured T 2 spectrum and T 2-D correlation map are often used to evaluate the petrophysical parameters of reservoirs, characterize the fluids and assess the oil recovery.
- Guangzhi Liao, Sihui Luo, Lizhi Xiao
- 2021
Jun 24, 2015 · This page provides an overview of the mathematical principles behind the petrophysical aspects of nuclear magnetic resonance (NMR) logging, including porosity, saturation, hydrocarbon identification, facies prediction, and permeability.
The main objective of this study is to develop a method for Swb and permeability estimations in tight sand-stone reservoirs based on the direct analysis of NMR echo data. Porosity, permeability, saturation, and NMR testing are performed on 20 tight sandstone samples from the Ordos Basin in China.
People also ask
How can a borehole NMR azimuthal measure petrophysical parameters?
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What is borehole nuclear magnetic resonance (NMR)?
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What is borehole NMR logging?
Sep 7, 2014 · This paper presents a comprehensive review of the recent advances in nuclear magnetic resonance (NMR) measurements for near-surface characterization using laboratory, borehole, and field technologies.
