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NMR Response to Oil-Based Mud Invasion in Low-Porosity and Low-Permeability Reservoirs and Evaluation of Residual Oil Saturation

To address the signal overlap between formation crude oil and oil-based mud (OBM) filtrate in nuclear magnetic resonance (NMR) logging T2spectra and the consequent challenge in accurately evaluating residual oil saturation, this study focuses on low-porosity and low-permeability sandstone reservoirs...

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Principais autores: WEI Xi, WANG Guiwen, WANG Meng, ZHANG Zhiqiang, DONG Yu
Formato: Artigo
Idioma:Chinês
Publicado em: Editorial Office of Well Logging Technology 2026-04-01
coleção:Cejing jishu
Assuntos:
obm
nmr
residual oil saturation
t2spectrum
relaxation signal
low-porosity and low-permeability reservoir
Acesso em linha:https://www.cnpcwlt.com/#/digest?ArticleID=5840
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