The impact study of variable diameter stabilizer on drilling fluid and cuttings transport

被引:0
作者
Chen, Lin [1 ,2 ]
Gao, Yanzhe [3 ]
Ni, Huafeng [2 ]
Liu, Qinglong [2 ]
Li, Gang [2 ]
Yang, Sen [2 ]
He, Jingbin [2 ]
Li, Chentao [1 ]
Xia, Chengyu [1 ]
Qian, Liqin [1 ]
机构
[1] Yangtze Univ, Cooperat Innovat Ctr Unconvent Oil & Gas, Minist Educ & Hubei Prov, Wuhan 430100, Hubei, Peoples R China
[2] CCDC ChangQing Gen Drilling Co, Xian 710000, Peoples R China
[3] Tianjin Univ Sci & Technol, Coll Elect Informat & Automat, Tianjin 300222, Peoples R China
关键词
Variable diameter stabilizer; Numerical simulation; Displacement; Pressure; Rock cuttings; FLOW;
D O I
10.1016/j.heliyon.2024.e30676
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Through numerical simulation, this study investigates the flow field characteristics of the variable diameter stabilizer in drilling tools under various conditions. It analyzes the influence of different flow rates and speeds on axial velocity and pressure distribution. The results indicate that more significant flow rates correspond to higher average axial velocities across sections, facilitating the transport of drilling fluid and cuttings. Increasing rotational speed leads to greater pressure differences between adjacent sections, consequently elevating the overall pressure drop of the tool, which, to some extent, aids in transporting drilling fluid with cuttings. During rotation, the vortex zone on the backside of the stabilizer creates a hovering and accumulation of cuttings, causing mud agglomeration, thereby affecting tool performance. During structural optimization of the tool, priority should be given to a transitional design of the outlet area in the functional core zone, aiming to alleviate the impact of abrupt structural expansions on cuttings transport.
引用
收藏
页数:10
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