| Experimental Study Optimizing Hole Cleaning-Cuttings Transport in Oil Drilling Engineering |
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| 作者姓名： | IbrahimAA MusaTA |
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| 作者单位： | [1]EngineeringFaculty,ChinaUniversityofGeosciences,Wuhan430074 [2]FacultyofEarthResources,ChinaUniversityofGeosciences,Wuhan430074 |
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| 摘 要： | With a clear understanding of the drilling fluid techniques and the cutting-taking mechanism, a new advanced model is set up for analyzing field data and quantitative forecast of cutting-taking mechanism. Therefore, a number of values affecting the drilling rate and the hole cleaning are studied over a wide range of parameters. Drilling data obtained under high-borehole-pressure conditions are analyzed to determine the causes of the reduction in rate of penetration (ROP) as the borehole pressure increases, which in some cases is caused by the buildup of rock debris under the bit. The theoretical achievement and testing conclusions can be very instructional for horizontal well drilling. Much higher annular velocities are required for effective hole cleaning in directional wells than in vertical wells. Highviscosity muds are observed to provide better transport than low-viscosity muds.
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| 关 键 词： | 油气运移 数据分析 预测 工程学 离心率 流动性 粘性 速率 |
Experimental Study Optimizing Hole Cleaning-Cuttings Transport in Oil Drilling Engineering |
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| IbrahimAA MusaTA.Experimental Study Optimizing Hole Cleaning-Cuttings Transport in Oil Drilling Engineering[J].Journal of China University of Geosciences,2003,14(2):182-189. |
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| Authors: | Ibrahim A A Musa T A |
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| Abstract: | With a clear understanding of the drilling fluid techniques and the cutting taking mechanism, a new advanced model is set up for analyzing field data and quantitative forecast of cutting taking mechanism. Therefore, a number of values affecting the drilling rate and the hole cleaning are studied over a wide range of parameters. Drilling data obtained under high borehole pressure conditions are analyzed to determine the causes of the reduction in rate of penetration (ROP) as the borehole pressure increases, which in some cases is caused by the buildup of rock debris under the bit. The theoretical achievement and testing conclusions can be very instructional for horizontal well drilling. Much higher annular velocities are required for effective hole cleaning in directional wells than in vertical wells. High viscosity muds are observed to provide better transport than low viscosity muds. |
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| Keywords: | cuttings transport hole inclination eccentricity fluid viscosity transport velocity |
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