Investigation on the cuttings carrying capacity of a novel retractable drill bit used in casing while drilling with air reverse circulation

套管 钻探 钻头 位(键) 井漏 石油工程 钻屑 演习 循环(流体动力学) 钻井液 压缩空气 地质学 切割 岩土工程 工程类 机械工程 计算机科学 航空航天工程 生物 植物 计算机安全
作者
Pinlu Cao,Guoqing Cui,Bo Qi,Shanshan Yao,Zhichuan Zheng,Kun Bo
出处
期刊:Journal of Petroleum Science and Engineering [Elsevier BV]
卷期号:219: 111079-111079 被引量:1
标识
DOI:10.1016/j.petrol.2022.111079
摘要

An orthogonal experimental design method is employed to investigate the effect of the structural parameters of the drill bit used in the Casing-while-Drilling (CwD) technology on its rock cuttings carrying capacity and reverse circulation performance. The results of the range analysis indicate that diameter of inner jet nozzle has the most significant impact on the cuttings carrying capacity of the drill bit, followed by the diameter of flushing nozzle. While for the reverse circulation ability, the diameters of the flushing nozzles have a dominant impact, followed by the diameters of the inner jet nozzles. In addition, the cuttings carrying capacity and the reverse circulation effect of the drill bit can be improved by shrinking the inner jet nozzle or appropriately enlarging the flushing nozzle. Accordingly, the optimal structural parameters of the drill bit are determined. Through further experiments, the cuttings carrying efficiency and the entrainment ratio of the optimal drill bit are 99.57% and 20.36%, respectively. Moreover, the rotation speed of drill bit has a trivial effect on its performance. At any tested rotation speed, the entrainment ratio is greater than 20%, and all the rock cuttings can be carried out of the borehole bottom using the proposed drill bit with the optimal structure. To test its real performance, a large-diameter retractable drill bit with a diameter of 600 mm was manufactured and tested in field. The results demonstrated that this retractable drill bit had excellent cuttings carrying and reverse circulation ability. The average penetration rate of the drill bit reached about 1.7 m/h in the formation of weathered sandstone with argillaceous composition, which was 1.7 times greater than conventional mud drilling in the same area. • A retractable drill bit was developed for using in Casing while Drilling. • The drill bit structure was optimized by orthogonal design method. • Cuttings carrying capacity and reverse circulation effect were investigated. • A drill bit with diameter of 600 mm was designed and tested in drilling field.
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
刚刚
Hello应助科研通管家采纳,获得10
刚刚
在水一方应助科研通管家采纳,获得10
刚刚
刚刚
SHAO应助科研通管家采纳,获得10
刚刚
pcr163应助科研通管家采纳,获得30
刚刚
刚刚
和谐一万完成签到,获得积分10
刚刚
SYLH应助科研通管家采纳,获得30
刚刚
quhayley应助科研通管家采纳,获得10
刚刚
Zhou发布了新的文献求助10
刚刚
科目三应助科研通管家采纳,获得10
刚刚
pcr163应助科研通管家采纳,获得30
1秒前
英姑应助科研通管家采纳,获得10
1秒前
Anita发布了新的文献求助10
1秒前
SYLH应助科研通管家采纳,获得10
1秒前
1秒前
我是老大应助科研通管家采纳,获得10
1秒前
SYLH应助科研通管家采纳,获得10
1秒前
Ava应助科研通管家采纳,获得10
1秒前
充电宝应助科研通管家采纳,获得10
1秒前
神的女人发布了新的文献求助10
1秒前
pcr163应助科研通管家采纳,获得30
1秒前
Liufgui应助科研通管家采纳,获得20
1秒前
褪黑素应助科研通管家采纳,获得10
1秒前
1秒前
1秒前
1秒前
1秒前
1秒前
1秒前
1秒前
SYLH应助科研通管家采纳,获得20
1秒前
MchemG应助Qianyun采纳,获得30
3秒前
3秒前
3秒前
3秒前
Knight-1124发布了新的文献求助10
3秒前
3秒前
华仔应助徐智秀采纳,获得10
3秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
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 3988732
求助须知:如何正确求助?哪些是违规求助? 3531027
关于积分的说明 11252281
捐赠科研通 3269732
什么是DOI,文献DOI怎么找? 1804764
邀请新用户注册赠送积分活动 881869
科研通“疑难数据库(出版商)”最低求助积分说明 809021