摘要
通过油层渗流方程与水平井筒流动方程的耦合建立射孔完井水平井向井流动模型,采用二分法与试算法相结合的方法求解,求得沿井筒方向的流量和压力分布。再用此模型方法研究水平井射孔段长度和射孔段位置对油井产能的影响,达到分段射孔优化的目的。对吐哈油田一口水平井的分析表明,油井产能随水平段射开长度的增加而增加,但不是呈线性增加,射开程度达到53%时,油井的产能已达到完全射开时的产能的80%;在射开程度相同的情况下,采用多段射开得到的产量大;采用一段射开时,越靠近指端射孔得到的产量越小。
An inflow model was established for horizontal wells of perforation and completion by coupling filtration equations with horizontal-wellbore flowing equation, combined with trial and error method, the flow and pressure distribution along wellbore was obtained. The model was used to describe the effect of its perforation length and perforating positions on well productivity for the purpose of staged perforation. The method is used for analyzing a horizontal well in Tuha Oilfield, it shows that the productivity increases with perforating length increasing, but it is not linear increasing. As perforating range is at 53%, the productivity is only 80% of fully perforated holes. At the same perforating range, the productivity is at maximum range by using multi-stage perforation, productivity is less in the nearest indicated section by using one stage perforation.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第4期153-155,共3页
Journal of Oil and Gas Technology
关键词
水平井
水平井产能
分段射孔
优化
horizontal well
horizontal well productivity
staged perforation
optimization
