Wettability Characterization of Carbonate Rocks Using a Micro-Scale Approach

Author:

Aboushanab Mahmoud Sami1,Al Naimi Khaloud1,Al Kobaisi Mohammed1,Rahman Md Motiur1,Arif Muhammad1,Mahmoud Mohamed2

Affiliation:

1. Khalifa University of Science and Technology

2. King Fahd University of Petroleum & Minerals

Abstract

AbstractWettability is an important factor that influences relative permeabilities and capillary pressure, which in turn impacts the hydrocarbon recovery. Wettability of carbonate surfaces is typically challenging due to their diverse wetting behavior. Wettability has been conventionally quantified using the macro-scale contact angle observations. However, macro contact angle suffers in terms of precise identification of the three-phase contact line. In this study, a new micro-scale approach is presented to determine rock surface wettability. Here we used five different Middle Eastern carbonate samples with different mineralogy. The micro-scale contact angles are evaluated via Environmental Scanning Electron Microscopy (ESEM) using condensation-evaporation approach while the classical sessile drop method is used to determine the macro-contact angles. The results show a notable difference between macro and micro contact angles which suggests wettability variation at different scale of measurement. Depending on micro contact angles, mixed-wet state for all samples is observed, as some samples experienced water-wet behaviour at most of the measured locations, while they showed intermediate-wet behaviour at a few locations. However, based on macro contact angles, only one wetting behaviour is recognized. Therefore, a thorough wettability characterization would require insights at the micro-scale to capture variations in wetting behavior.

Publisher

SPE

Reference31 articles.

1. Wettability of nanofluid-modified oil-wet calcite at reservoir conditions;Al-Anssari;Fuel,2018

2. In situ characterization of mixed-wettability in a reservoir rock at subsurface conditions;Alhammadi;Scientific Reports,2017

3. SPE-169001-MS Impact of surfactants for wettability llteration in stimulation fluids and the potential for surfactant EOR in unconventional liquid reservoirs;Alvarez,2014

4. Wettability literature review- part 5: the effects of wettability on relative permeability;Anderson;JPT, Journal of Petroleum Technology,1987

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3