A compositional numerical study of vapor–liquid-adsorbed three-phase equilibrium calculation in a hydraulically fractured shale oil reservoir

油页岩 物理 相平衡 页岩油 热力学 石油工程 水库工程 相(物质) 吸附 两相流 机械 石油 流量(数学) 地质学 物理化学 化学 古生物学 量子力学
作者
Yuhan Wang,Zhengdong Lei,Zhenhua Xu,Yishan Liu,Xiuxiu Pan,Yanwei Wang,Pengcheng Liu
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:36 (7)
标识
DOI:10.1063/5.0214453
摘要

The development of carbon capture, utilization, and storage technologies has notably advanced CO2-enhanced oil recovery (EOR) in shale oil reservoirs, which are characterized by abundant nanopores. These nanopores induce unique phase behaviors in hydrocarbons, challenging traditional phase equilibrium calculation methods. This paper presents a novel three-phase thermodynamic model (vapor–liquid-adsorbed three-phase equilibrium calculation) that addresses these challenges by considering the nanopore capillary pressure, critical parameter transitions, and material exchange between the adsorbed and bulk phases. Grounded in the multicomponent Langmuir–Freundlich adsorption equation and the Peng Robinson equation of state, this model is integrated into the MATLAB Reservoir Simulation Toolbox using an embedded discrete fracture model framework, enabling detailed study of CO2 and hydrocarbon phase behaviors within shale oil nanopores. The results reveal that there are significant nano-constrained effects on multicomponent fluid phase behavior, particularly in pores smaller than 20 nm, leading to notable changes in bubble and dew point pressures, as well as critical condensation pressures and temperatures. CO2 injection further complicates the system, enhancing interactions and expanding the coexistence region of the liquid and gas phases on the pressure–temperature diagram, especially across varying pore sizes. Optimization research on CO2 huff and puff technical parameters for shale oil reservoirs suggests the following optimal settings: a CO2 injection rate of 100 t/day, a shut-in time of 30 days, and six huff and puff cycles. The results of this study offer critical insights into CO2-EOR mechanisms in shale oil reservoirs and emphasize the importance of nanopore properties in EOR.
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
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
啊啊啊哦哦哦完成签到,获得积分10
刚刚
刚刚
YOUNG-M发布了新的文献求助10
2秒前
wuyu完成签到,获得积分10
2秒前
2秒前
科研通AI5应助hs采纳,获得10
2秒前
zrl发布了新的文献求助10
3秒前
4秒前
痴情的小懒虫完成签到,获得积分10
4秒前
Cui完成签到,获得积分20
5秒前
6秒前
Cui发布了新的文献求助10
7秒前
8秒前
neiz发布了新的文献求助10
8秒前
77发布了新的文献求助10
9秒前
lxx完成签到 ,获得积分10
9秒前
9秒前
10秒前
huang完成签到,获得积分10
10秒前
可爱的函函应助燕子采纳,获得10
11秒前
11秒前
小呀嘛小二郎完成签到 ,获得积分10
12秒前
研友_nEoEy8完成签到,获得积分10
13秒前
科研通AI5应助活泼的觅云采纳,获得30
13秒前
迷恋发布了新的文献求助10
13秒前
重剑无锋发布了新的文献求助10
14秒前
yjy发布了新的文献求助10
15秒前
hfgeyt完成签到,获得积分10
16秒前
17秒前
武雨寒发布了新的文献求助10
18秒前
18秒前
123完成签到,获得积分10
19秒前
22秒前
真君山山长完成签到,获得积分10
22秒前
momo完成签到,获得积分10
23秒前
李健应助greenandblue采纳,获得10
23秒前
coco发布了新的文献求助10
23秒前
谷雨完成签到 ,获得积分10
25秒前
Hello应助快乐仙知采纳,获得10
28秒前
科研通AI5应助科研通管家采纳,获得10
28秒前
高分求助中
Technologies supporting mass customization of apparel: A pilot project 600
Introduction to Strong Mixing Conditions Volumes 1-3 500
Tip60 complex regulates eggshell formation and oviposition in the white-backed planthopper, providing effective targets for pest control 400
A Field Guide to the Amphibians and Reptiles of Madagascar - Frank Glaw and Miguel Vences - 3rd Edition 400
Optical and electric properties of monocrystalline synthetic diamond irradiated by neutrons 320
共融服務學習指南 300
Essentials of Pharmacoeconomics: Health Economics and Outcomes Research 3rd Edition. by Karen Rascati 300
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 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3800545
求助须知:如何正确求助?哪些是违规求助? 3345702
关于积分的说明 10327141
捐赠科研通 3062280
什么是DOI,文献DOI怎么找? 1680908
邀请新用户注册赠送积分活动 807268
科研通“疑难数据库(出版商)”最低求助积分说明 763614