钻井环空固液两相流压降模型理论分析  

THEORETICAL ANALYSIS OF PRESSURE DROP MODEL FOR SOLID-LIQUID TWO-PHASE FLOW IN DRILLING ANNULUS

作　　者：褚元林[1] 樊洪海[1] 刘希圣[1] 

机构地区：[1]北京石油大学石油工程系

出　　处：《石油大学学报（自然科学版）》1996年第6期17-20,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：针对直井钻进过程中环空内岩屑运移的特点，对环空中固液两相流动压降进行了理论分析。采用因次分析的方法综合考虑了影响压降的诸多因素，导出了固相摩阻系数与傅劳德数之间的关系，提出了总摩阻系数的理论计算公式，修正了过去计算环空压降时忽略固相引起的压降，为准确进行水力优化设计提供了参考依据。The pressure drop model for solid-liquid two-phase flow in the concentric annulus of drilling well is analyzed. The factors affecting pressure drop are analyzed. A relationship between solid friction factor and Froude number is given. The theoretical formulas of total friction factor are presented.The calculation result of the pressure drop will be helpful to hydraulic design.

关 键 词：钻井液 环形空间流动 两相流动 压力降 数学模型 

分 类 号：TE254[石油与天然气工程—油气井工程]