亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Experimental study on liquid production law, oil recovery mechanism, and influencing factors of water huff-n-puff in the tight sedimentary tuff oil reservoir

致密油 注水(采油) 石油工程 沉积岩 地质学 渗吸 岩土工程 环境科学
作者
Shuai Li,Shenglai Yang,Xinyuan Gao,Mibang Wang,Jiayi Yu
出处
期刊:Journal of Petroleum Science and Engineering [Elsevier BV]
卷期号:: 109721-109721 被引量:1
标识
DOI:10.1016/j.petrol.2021.109721
摘要

Water huff-n-puff (WHP) is an effective means of improving the recovery factor (RF) of the tight sedimentary tuff oil reservoir. In this study, through the tight oil WHP experimental platform monitored by online nuclear magnetic resonance, the liquid production law, oil recovery mechanism, and influencing factors of tight sedimentary tuff WHP were investigated. The results show that the optimal cut-off pressure and depletion rate of core natural energy depletion are 5 MPa and 0.3 ml/min, respectively. WHP can effectively improve the RF of the tight sedimentary tuff, and the core RF increased by 23.04% after five cycles of the WHP. In multiple cycles of the WHP, the volume of the injected water and produced liquid of each cycle is relatively stable, but the oil production gradually decreases. The first three cycles of the WHP are high-efficiency stage, the fourth and fifth cycles are low-efficiency stage, and there is no WHP value after the fifth cycle. The range of the WHP oil production gradually extends from the injection end to the far end with increasing huff-n-puff cycles, and the oil comes mainly from the medium pores of the core. Both elastic and imbibition displacements are important mechanisms for WHP oil recovery. In five cycles of the WHP, the proportion of elastic displacement oil production to the total oil production of each cycle was 89%, 88.22%, 85.92%, 22.78%, and 0%. When the water injection pressure of each cycle is fixed, the elastic displacement oil production of the WHP is mainly affected by the water shielding, multiphase flows resistance, carrying and scouring, and capillary resistance. Meanwhile, imbibition displacement oil production is mainly affected by the contact area of oil and water. The RF of the WHP has a parabolic relationship with the water injection and reinjection pressures, and a positive correction relationship with the well soaking time. • Water huff-n-puff technology can effectively improve the recovery factor of the tight sedimentary tuff oil reservoir. • Medium pores are the main force of multiple cycles of water huff-n-puff oil production of the tight sedimentary tuff. • With increasing huff-n-puff cycles, the proportion of elastic displacement oil production gradually decreases. • There are optimal values for injection and reinjection pressures, and the well soaking time can be extended appropriately.
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
1秒前
_ban发布了新的文献求助10
4秒前
小黄鸭完成签到,获得积分10
8秒前
滴滴哒发布了新的文献求助10
15秒前
李李原上草完成签到 ,获得积分10
17秒前
超级的千青完成签到 ,获得积分10
17秒前
21秒前
Bio应助又来注水了采纳,获得30
26秒前
万能图书馆应助爹爹采纳,获得10
26秒前
layman完成签到,获得积分10
31秒前
郭郭完成签到 ,获得积分10
44秒前
FL完成签到 ,获得积分10
54秒前
科研通AI5应助sljzhangbiao11采纳,获得10
58秒前
又来注水了完成签到,获得积分10
1分钟前
快乐海豚完成签到 ,获得积分10
1分钟前
科研通AI5应助科研通管家采纳,获得10
1分钟前
科研狗的春天完成签到 ,获得积分10
1分钟前
Lucas应助董可以采纳,获得10
1分钟前
1分钟前
Aqib发布了新的文献求助10
1分钟前
1分钟前
科研通AI5应助西瓜嘻嘻嘻采纳,获得10
1分钟前
吴昕昕发布了新的文献求助10
1分钟前
未晚完成签到 ,获得积分10
1分钟前
香蕉觅云应助Aqib采纳,获得10
1分钟前
早晨发布了新的文献求助10
1分钟前
孤鸿.完成签到 ,获得积分10
2分钟前
2分钟前
彭于晏应助11采纳,获得10
2分钟前
2分钟前
吴昕昕完成签到,获得积分10
2分钟前
2分钟前
iwaking完成签到,获得积分10
2分钟前
hxn发布了新的文献求助30
2分钟前
通通发布了新的文献求助10
2分钟前
早晨完成签到,获得积分10
2分钟前
Lucas应助通通采纳,获得10
2分钟前
2分钟前
WANG完成签到,获得积分10
2分钟前
有机发布了新的文献求助10
2分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3990020
求助须知:如何正确求助?哪些是违规求助? 3532077
关于积分的说明 11256276
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805139
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228