摘要
根据水平井筒变质量流动特点,建立了水平井筒压力梯度模型,讨论了几种计算井筒压力降的方法。由于沿水平井筒段的压力变化直接影响油藏中的流体沿井筒生产段的流入,引入了考虑井筒压降时水平井产量的估算模型,并针对井筒为无限导流时的产能计算,计算了考虑井筒压降对水平井生产动态的影响。所得结果可为准确估算水平井产量以及合理预测水平井的生产动态提供理论依据。
Pressure gradient model is established based on variable mass flow in horizontal wellbore. Some calculation methods for wellbore pressure drop are discussed. Because Pressure change along horizontal wellbore affect inflow along wellbore from reservoir, estimated model for horizontal well production considering wellbore pressure drop is introduced and compared with productivity for infinite conductivity. Effect of wellbore pressure on horizontal well performance is considered. It can provide some theory guiding for precise computed horizontal well production and rational predicted horizontal well performance.
出处
《科学技术与工程》
2009年第6期1512-1516,共5页
Science Technology and Engineering
基金
国家自然科学基金项目(59776045)资助
关键词
水平井
压降
产能
变质量流
horizontal well pressure drop productivity variable mass flow
