中文摘要：

作为多分支井的一种特殊井型，鱼骨刺井近年来在国内外油田尤其是海上稠油油田应用越来越广泛，而鱼骨刺井井身结构的复杂性增加了近井流动评价的难度，难以采用常规井型的近井流动模型进行描述。采用势叠加原理和微元线汇理论，考虑分支井眼近井油藏地带流体渗流，井筒内变质量管流、分支井眼流体向主井筒的汇流相互作用，进行了鱼骨刺井多段流动耦合的近井渗流研究，建立了裸眼完井方式下鱼骨刺井多段流动耦合的近井渗流数学模型，描述了鱼骨刺井近井油藏渗流特征，并与常规水平井的渗流特征进行了对比分析。

英文摘要：

As one special multilateral well type, fishbone well has been applied extensively in oilfield. For present productivity evaluation model of fish bone well, interference among lateral and influences of flow in non-production section on productivity are not considered. Based on the potential superposition principle and infinitesimal line congruence theory, a new production evaluation model of fishbone well with openhole completion method is established on the considering of coupling influence between percolation in reservoir and variable mass pipe flow in production section wellbore and the interference between laterals and mother bore. The functions which include pressure dropdown and flow rate distribution along production section and parameters analysis could be realized by the proposed comprehensive model of fishbone well. It could be shown from the analysis results that the flow rate and pressure dropdown in mother bore increase from toe to heel and a catastrophe point appears at the confluence point owing to the interference between mother and rib.