Direct simulations of bedrock core and cuttings transport phenomena in reverse circulation drilling

物理 基岩 循环(流体动力学) 芯(光纤) 钻探 机械 地貌学 机械工程 地质学 光学 工程类
作者
Ni Sun,Ting Ye,Rusheng Wang
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:36 (12)
标识
DOI:10.1063/5.0237827
摘要

Polar drilling is essential for obtaining ice and bedrock samples, providing critical insights into climate and geological history. The reverse circulation drilling method, utilizing a dual-wall drill pipe, presents a stable and efficient strategy. Nonetheless, the intricate dynamics involving drilling fluids, rock cuttings and cores necessitate sophisticated modeling to elucidate the underlying mechanism and optimize drilling efficiency. To address this, we developed a multiphase flow model that accounts for non-Newtonian fluid behavior, turbulence, particle dynamics, and fluid–structure interactions, enabling a thorough assessment of various operational parameters. The model's temporal–spatial sensitivity was evaluated, and its accuracy was confirmed by comparison with three different sets of experimental data. A detailed parametric investigation was then conducted to systematically assess the effects of various parameters, including the non-Newtonian behavior and inlet velocity of the drilling fluid, the rate of penetration, and the dimensions of the cuttings and core. The simulation results indicate that the non-Newtonian behavior of the drilling fluid has an non-negligible effect on the transport efficiency of both cuttings and core. An increase in the fluid inlet velocity leads to faster transport, albeit at the cost of higher pump pressure. The rate of penetration has a minor influence on the core transportation but largely affects the cutting transportation. More interestingly, larger cuttings demonstrate enhanced transport efficiency, attributed to a more uniform velocity distribution. Furthermore, the core diameter plays a pivotal role in transport efficiency by significantly altering the fluid dynamics, whereas the core length has a negligible effect. These results may have direct applications for optimizing polar drilling operations, potentially leading to enhanced drilling efficiency, reduced drilling costs, and informing future drilling technology advancements.
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
mensa完成签到,获得积分10
1秒前
1秒前
1秒前
务实白开水完成签到 ,获得积分10
2秒前
钢笔完成签到,获得积分10
2秒前
水晶李发布了新的文献求助10
2秒前
3秒前
开心千青完成签到,获得积分10
3秒前
3秒前
3秒前
fy发布了新的文献求助10
3秒前
月亮moon发布了新的文献求助10
3秒前
3秒前
阿布发布了新的文献求助10
4秒前
科研通AI5应助忧郁的静柏采纳,获得10
4秒前
Youth发布了新的文献求助10
4秒前
斯文败类应助ZJH采纳,获得10
4秒前
科研通AI5应助虚心念桃采纳,获得10
5秒前
5秒前
CMJ完成签到 ,获得积分10
5秒前
坚强的胡萝卜完成签到,获得积分20
6秒前
如意元霜发布了新的文献求助10
6秒前
7秒前
7秒前
fy完成签到,获得积分10
7秒前
Ybaci7完成签到,获得积分20
8秒前
yukino发布了新的文献求助10
8秒前
menghuigucha完成签到,获得积分10
8秒前
李喜喜发布了新的文献求助10
8秒前
ruanyh发布了新的文献求助10
9秒前
852应助坚强的胡萝卜采纳,获得10
10秒前
星辰大海应助小白采纳,获得10
10秒前
10秒前
健忘的路人完成签到 ,获得积分10
10秒前
11秒前
Q_Q完成签到,获得积分10
11秒前
12秒前
耿昭完成签到,获得积分10
12秒前
英俊的铭应助xlj采纳,获得10
12秒前
小泥娃发布了新的文献求助10
14秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2700
Mechanistic Modeling of Gas-Liquid Two-Phase Flow in Pipes 2500
Kelsen’s Legacy: Legal Normativity, International Law and Democracy 1000
Handbook on Inequality and Social Capital 800
Conference Record, IAS Annual Meeting 1977 610
Interest Rate Modeling. Volume 3: Products and Risk Management 600
Interest Rate Modeling. Volume 2: Term Structure Models 600
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 有机化学 生物化学 物理 纳米技术 计算机科学 内科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 量子力学 光电子学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3546888
求助须知:如何正确求助?哪些是违规求助? 3123917
关于积分的说明 9357332
捐赠科研通 2822504
什么是DOI,文献DOI怎么找? 1551513
邀请新用户注册赠送积分活动 723546
科研通“疑难数据库(出版商)”最低求助积分说明 713791