大位移水平井段岩屑运移实验研究 |
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引用本文: | 相恒富,孙宝江,李昊,牛洪波. 大位移水平井段岩屑运移实验研究[J]. 石油钻采工艺, 2014, 36(3): 1-6. DOI: 10.13639/j.odpt.2014.03.001 |
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作者姓名: | 相恒富 孙宝江 李昊 牛洪波 |
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作者单位: | 1.中国石油大学华东,山东青岛 266580 |
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基金项目: | 国家科技重大专项“海洋深水油气田开发工程技术”(编号:2011ZX05026-001-02);教育部创新团队发展计划资助(编号:RT1086);中央高校基本科研业务费专项资金资助(编号:13CX02072A) |
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摘 要: | 以相似系统理论建立了大位移水平井携岩实验装置,并根据颗粒雷诺数相似推导了实验装置与原型的参数相似关系,实验研究了环空返速、钻井液密度及有效黏度、岩屑密度及粒径大小、钻杆转速及偏心度、井斜角、机械钻速和井眼尺寸等10个参数与无因次岩屑床厚度的变化关系,在此基础上采用非线性回归方法建立了大位移水平井稳态无因次岩屑床厚度方程,并根据文献对模型进行了验证。模型对于确定大位移水平井井眼净化最小携岩排量和优化机械钻速具有参考意义。
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关 键 词: | 水平井 岩屑运移 相似原理 岩屑床厚度 偏心环空 理论模型 |
收稿时间: | 2019-05-18 |
Experimental research on cuttings transport in extended-reach horizontal well |
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Affiliation: | 1.China University of Petroleum East China, Qingdao, Shandong 266580, China2.Drilling Technology Research Institute of Shengli Petroleum Bureau, Sinopec, Dongying, Shandong 257017, China |
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Abstract: | Cuttings transport experiment device for extended-reach horizontal well was established based on the similarity system theory. The parameters similarity between the model and the prototype was deduced using the similar particle Reynolds number. Then, research was made on the variation of 10 parameters (i.e. annular velocity, mud density and effective viscosity, cuttings density and size, drillpipe rotation speed and eccentricity, inclination angle, rate of penetration and borehole size) with the dimensionless cutting-bed thickness. On this basis, a steady dimensionless cutting-bed thickness equation for extended-reach horizontal well was established with the nonlinear regression method, and the model was verified through literatures. The model provides a significant guidance for borehole cleaning of minimum cuttings transport flux and the optimization of ROP for extended-reach horizontal wells. |
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