水平井开发块状边底水油藏的影响因素分析——以宋家垛油田周43块为例

On Factors Influencing Development of Massive Edge Bottom Water Reservoir Using Horizontal Wells-Base on Zhou Block 43 in Songjiaduo Oildom

由于水平井能有效抑制底水锥进,与直井相比具有很大优势,在边底水油藏中应用非常广泛。针对水平井的开发特征,运用数值模拟法,结合生产动态及物理模型试验方法从静态因素和生产动态因素两方面分析,总结了影响水平井开发块状边底水油藏的各项因素,提出了"水平井临界渗透率级差"概念,分析了油藏开发中后期驱动方式的转变,以期对同类油藏的开发提供借鉴参考。

Because horizontal wells may control bottom water coning effectively and have great advantage over vertical wells,they are widely applied to bottom water reservoir.According to the development feature of horizontal wells and by using numerical simulation together with the methods of production dynamic and physical model test,the author has analyzed both static factors and dynamic factors.Based on the analysis,the author has listed various factors influencing development of massive edge bottom water reservoir using horizontal wells,proposed the concept on critical permeability differential of horizontal wells and studied the conversion of drive mode during the middle and later periods of reservoir development,which are supposed to be applied to similar reservoir development.