The Observation of Residual Oil Evolution During Waterflooding Using NMR   D-T (2) Maps

doi:10.1007/s00723-015-0711-2

CORC > 北京大学 > 信息科学技术学院

	The Observation of Residual Oil Evolution During Waterflooding Using NMR D-T (2) Maps
	Qi, Yukai ; Liu, Naigui ; Wang, Weimin
刊名	APPLIED MAGNETIC RESONANCE
	2015
关键词	POROUS-MEDIA RELAXATION DIFFUSION FLUID
DOI	10.1007/s00723-015-0711-2
英文摘要	By supplementing standard relaxation time measurements with diffusion information, nuclear magnetic resonance (NMR) D-T (2) mapping provides a powerful tool for characterizing fluids in a core. In this study, a D-T (2) mapping technique was designed and applied to investigate waterflooding behavior and pore-level residual oil distributions. NMR measurements were conducted at different stages of the waterflooding process, and corresponding D-T (2) maps were acquired. The oil and water signals were easily separated using a diffusion coefficient cut-off of 3 x 10(-6) cm(2)/s. The oil saturation values measured via the NMR method were highly consistent with the volumetric method results. The pore-level residual oil distributions could be calculated by analyzing the oil T (2) spectra during waterflooding. The injected water was found to preferentially displace oil in large and medium-sized pores having relatively low capillary pressures. The final residual oil saturation measured via the NMR method was 18.9 %, with 15.7 % occurring in medium-sized pores (10 ms < T (2) < 100 ms).; SCI(E); EI; ARTICLE; y.qi.10@aberdeen.ac.uk; 10; 1089-1098; 46
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416018]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Qi, Yukai,Liu, Naigui,Wang, Weimin. The Observation of Residual Oil Evolution During Waterflooding Using NMR D-T (2) Maps[J]. APPLIED MAGNETIC RESONANCE,2015.
APA	Qi, Yukai,Liu, Naigui,&Wang, Weimin.(2015).The Observation of Residual Oil Evolution During Waterflooding Using NMR D-T (2) Maps.APPLIED MAGNETIC RESONANCE.
MLA	Qi, Yukai,et al."The Observation of Residual Oil Evolution During Waterflooding Using NMR D-T (2) Maps".APPLIED MAGNETIC RESONANCE (2015).