摘要
气顶底水油藏油井射孔时既要考虑避水,又要考虑避气,因此存在一个最佳射开位置的问题。由于油井的临界产量随射开程度的增大而减小,油井的产量随射开程度的增大而增大,因此存在一个最佳射开程度的问题。根据理论分析,给出了气顶底水油藏最佳打开程度的确定方法。从纯技术上考虑,临界产量与油井产量相等时的射开程度即为油井的最佳射开程度。通过实例计算,在无隔板的情况下,油井的打开程度都较小,产量也较小。因此,气顶底水油藏油井射孔时,应考虑隔板的分布。
For a well producing from reservoir with bottom water and gas cap, the water and gas avoidances must be taken into consideration for its position of optimum perforation, The critical flow rate of well decreases with the increase of perforated degree, while the flow rate of well increase with the increase of perforated degree. Base on theoretical analysis, the method for determination of optimum perforated degree of reservoir with bottom water and gas cap is presented. Technically, the optimum perforated degree of well is defined as its critical flow rate is equal to its flow rate. However, the case study shows that under barrier-free condition the perforalcd degree is used to being lower and resulting in lower flow rate of well. Therefore, the harrier distribution should be taken into consideration for the perforation of reservoir with bottom water and gas cap.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第1期94-95,共2页
Xinjiang Petroleum Geology
关键词
气顶
底水
油藏
油井
射孔井段
gas cap
bottom water
well
perforation interval
