水平井在火山岩底水油藏开发中的应用

根据准噶尔盆地石西油田石炭系火山岩油藏地质特征,应用现代油藏工程和数值模拟技术对比分析了该油藏应用水平井与直井的开采效果,论证了应用水平井开发的可行性。同时根据油田地质特征进行水平井地质设计、产能分析,确定其合理产能。油田动态数据对比表明,水平井对深层、低渗透、裂缝性、块状底水、异常高压的天然裂缝性火山岩油藏具有较好的适应性,水平井产能的确定结果是可信的,其方法也是可行的。

An Application of Horizontal Well in Development of Volcanic Reservoirs with Bottom Water

This paper makes analysis and comparison of the recovery effcts between horizontal wells and vertical wells in volcanic reservoir using modern reservoir engineering and numerical simulation techniques, based on geological characteristics of Carboniferous volcanic reservoir in Shixi oilfield, Junggar basin. And the feasibility by using horizontal well for development of such an oilfield has been demonstrated. In addition, the study presents geologic design, productivity analysis and reasonable productivity by horizontal well process. The comparison of field performance data showed that horizontal well is well suitable for development of natural fractured volcanic reservoirs with deep, low permeability, block and bottom water as well as abnormal high pressure and determination of horizontal well productivity is accepted to be reliable and feasible in methodology.