江西科学2025，Vol.43Issue(2)：243-252,10.DOI:10.13990/j.issn1001-3679.2025.02.005
油基泥浆侵入含油储层核磁T2谱快速校正方法研究
The Study on the Rapid Correction Method for Nuclear Magnetic Resonance T2 Spectra of Oil-Based Mud Invasion in Oil-Bearing Reservoir
摘要
Abstract
Oil-based mud has been widely used in offshore oil and gas drilling,improving drilling efficiency.However,its invasion into formations causes the Nuclear Magnetic Reso-nance(NMR)T2 spectra to exhibit a"tailing"effect,significantly affecting reservoir identi-fication and evaluation.The T2 spectra response characteristics after oil-based mud invasion were analyzed,and high-temperature and high-pressure NMR experiments on invaded core samples were conducted to investigate the"tailing"effect in cores with different porosi-ty and permeability.A correction method was proposed,in which a correction factor was derived by comparing the"tailing"characteristics of T2 spectra before and after invasion,establishing a rapid correction approach for T2 spectra.The results showed that the correc-ted T2 spectra effectively suppressed the"tailing"effect,with minimal changes in calculated porosity.Furthermore,the corrected NMR permeability matched the core-measured per-meability more accurately,demonstrating the reliability and practicality of the proposed meth-od.This study provides methodological support for NMR logging evaluation under oil-based mud invasion conditions,facilitating improved reservoir identification and evaluation.关键词
油基泥浆/校正方法/核磁共振实验/核磁T2谱Key words
oil-based mud/the rapid correction method/NMR experiment/NMR T2 spectra分类
石油、天然气工程引用本文复制引用
黄易聪,秦臻,张雪,张昕熠..油基泥浆侵入含油储层核磁T2谱快速校正方法研究[J].江西科学,2025,43(2):243-252,10.基金项目
国家自然科学基金项目(42364009,441804097) （42364009,441804097）
江西省自然科学基金项目(20224BAB203044) （20224BAB203044）
教育部产学合作协同育人项目(221001592090942) （221001592090942）
江西省研究生创新专项资金项目(YC2023-S555) （YC2023-S555）
东华理工大学研究生创新基金项目(DHYC-202313). （DHYC-202313）
