Research on Cuttings Carrying Principle of New Aluminum Alloy Drill Pipe and Numerical Simulation Analysis

Pengcheng Wu, Chentao Li, Zhen Zhang, Jingwei Yang, Yanzhe Gao, Xianbing Wang, Xiumei Wan, Chengyu Xia () and Qunying Guo ()
Additional contact information
Pengcheng Wu: Engineering Technology Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610017, China
Chentao Li: School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China
Zhen Zhang: Shale Gas Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610056, China
Jingwei Yang: School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China
Yanzhe Gao: College of Electronic Information and Automation, Tianjin University of Science, Tianjin 300222, China
Xianbing Wang: Engineering Technology Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610017, China
Xiumei Wan: Engineering Technology Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610017, China
Chengyu Xia: School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China
Qunying Guo: School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China

Energies, 2023, vol. 16, issue 15, 1-17

Abstract: In order to improve the cuttings transport ability and well hole purification effect of horizontal shale gas wells in the Sichuan and Chongqing area, a new type of aluminum alloy drill pipe is put forward, and the floatability is validated by theoretical analysis and actual parameter calculation. According to the cuttings migration mechanism, the cuttings cleaning simulation model of the new aluminum alloy drill pipe and the traditional steel drill pipe was established by Fluent, and the hexahedral mesh is used to divide the model. Thus, the mesh independence and convergence of the two models are verified. Then, the simulation model is verified by comparing the calculation results of the two simulation models with the experimental data of the indoor cuttings migration device. Finally, the rock-cleaning ability of the two drill pipes is analyzed under the conditions of changing the cuttings particle size, well inclination angle, displacement, and mechanical speed. Compared with the traditional steel drill pipe, the new aluminum alloy drill pipe can improve the borehole purification capacity by 13% on average. This research result is of great significance in reducing the quality of cuttings in the annulus and improving the borehole purification effect.

Keywords: new aluminum alloy drill pipe; cuttings migration mechanism; cuttings cleaning simulation model; cuttings particle size; well inclination angle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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