The effects of micro-fractures and mixed wettability on oil/water imbibition in porous media

渗吸 物理 润湿 多孔介质 石油工程 多孔性 机械 复合材料 热力学 植物 发芽 材料科学 工程类 生物
作者
Xuefan Yin,Jing Li,Dongying Wang,Keliu Wu,Shengting Zhang,Zhangxin Chen
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:36 (12)
标识
DOI:10.1063/5.0246548
摘要

Imbibition is widely recognized as an effective process for enhancing oil recovery in shale reservoirs. However, shale formations often feature complex multi-scale laminar structures, including micro-fractures, and distinct wettability characteristics in organic and inorganic pores. To better understand the impact of micro-fractures and mixed wettability on water imbibition, we developed a pore-scale model incorporating mixed wettability and micro-fractures to simulate countercurrent imbibition. The results indicate that: (1) Counter-current imbibition exhibits complex flow characteristics and can be divided into three stages. In the early stage, two equivalent oil-water phase interfaces form, and an external force exceeding resistance is required to displace the oil phase. In the middle stage, a continuous oil phase gradually develops in the main channel, with only one phase interface. In the later stage, driving forces and resistance approach mechanical equilibrium, allowing some oil droplets to be expelled into the main channel. (2) The mixed wettability of shale pores amplifies oil phase trapping and capillary fingering during water imbibition. A concentrated distribution of oil-wet pores increases adhesion forces between the oil and pore walls, resulting in pronounced oil trapping. Conversely, a concentrated distribution of water-wet pores accelerates water flow due to capillary forces, enhancing the fingering effect. (3) Micro-fractures effectively connect matrix pores distant from the main channel. As the bifurcation angle increases, imbibition recovery initially rises and then decreases. However, mixed wettability significantly restricts the flow conductivity of micro-fractures, highlighting the importance of considering its influence in reservoir studies.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
LLY发布了新的文献求助10
刚刚
露露子发布了新的文献求助100
1秒前
xcc完成签到,获得积分10
1秒前
1秒前
bkagyin应助chengwenyu采纳,获得10
2秒前
XU博士完成签到,获得积分10
2秒前
2秒前
爆米花应助风华正茂采纳,获得10
2秒前
lumos发布了新的文献求助10
3秒前
失眠的海云完成签到,获得积分10
3秒前
GXSH完成签到,获得积分10
3秒前
甜蜜冰淇淋完成签到,获得积分10
3秒前
徐蹇发布了新的文献求助10
3秒前
华仔应助爆螺钉采纳,获得10
4秒前
4秒前
脑洞疼应助灰港小舢板采纳,获得10
4秒前
5秒前
小金今天自律了吗完成签到,获得积分10
5秒前
冷艳芯发布了新的文献求助10
6秒前
在水一方应助端庄的蜡烛采纳,获得10
6秒前
6秒前
能干的谷蕊完成签到 ,获得积分10
6秒前
msd2phd完成签到,获得积分10
7秒前
7秒前
天玄完成签到,获得积分10
7秒前
LLY完成签到,获得积分10
7秒前
哈哈完成签到,获得积分10
7秒前
8秒前
小马甲应助木木采纳,获得10
8秒前
背后梦安发布了新的文献求助10
8秒前
8秒前
9秒前
挡住所有坏运气888完成签到,获得积分10
10秒前
10秒前
jerry完成签到,获得积分10
10秒前
小小二完成签到,获得积分10
10秒前
雨相所至发布了新的文献求助10
10秒前
徐蹇完成签到,获得积分10
10秒前
量子星尘发布了新的文献求助10
11秒前
11秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969222
求助须知:如何正确求助?哪些是违规求助? 3514124
关于积分的说明 11171948
捐赠科研通 3249361
什么是DOI,文献DOI怎么找? 1794799
邀请新用户注册赠送积分活动 875431
科研通“疑难数据库(出版商)”最低求助积分说明 804779