摘要
结合火驱特点分析了稠油油藏蒸汽吞吐后的温度、压力、流体及储集层特征及其对火驱的利弊,重点对蒸汽吞吐后火驱油藏的筛选以及火驱过程决策控制问题进行了探讨,提出了考虑相关特点的油藏筛选函数,讨论了注蒸汽后水平井火驱的动态特点。利用能量守恒研究了含水饱和度与火驱前缘温度之间的关系,得出蒸汽吞吐后转火驱开发方式不需要转入湿式燃烧的重要结论。结合火驱试验数据讨论了蒸汽吞吐后的复杂气窜通道对火驱前缘推进的影响及其控制因素。研究认为,蒸汽吞吐后期油藏转火烧油层开采是可行的。
Based on the feature of in-situ combustion, the characteristics of temperature, pressure, fluid and reservoir rocks in heavy oil res- ervoir after steam huff and puff as well as their influences on the subsequent in-situ combustion are analyzed, focusing on discussion of the screening of appropriate in-situ combustion reservoir, decision-making and control of in-situ combustion process, reservoir screening func- tion and horizontal well in-situ combustion performance. Through relationship between water saturation and front temperature of in-situ combustion given by principle of energy conservation, it is suggested that there is no need to convert wet combustion in advance from steam huff and puff followed by in-situ combustion. And combining with in-situ combustion test data, the impact of the complicated steam-break- through channels caused by steam huff and puff on the advancing of in-situ combustion front and the control factors are discussed. The stud- ies show it is feasible to convert in-situ combustion from steam huff and puff.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期303-306,共4页
Xinjiang Petroleum Geology
关键词
蒸汽吞吐
火烧油层
筛选
含水饱和度
气窜
现场试验
steam huff and puff
in-situ combustion
screening
water saturation
steam breakthrough
field test
