摘要
为了进一步提高孤岛油田薄层稠油环蒸汽吞吐的采收率,针对高轮次吞吐中后期剩余油分布特点,应用油藏工程方法、数值模拟技术和动态分析方法,开展了井网加密调整研究,将200m×283m反九点法基础井网加密成141m×200m五点法井网;该优化方案实施后取得了显著效果,单井产油量平均达到13.5t/d,是周围热采老井产量的2～3倍,含水率稳定在70%左右,比周围老井含水率低10%.该技术对于同类稠油油藏高轮次蒸汽吞吐中后期进一步提高采收率有较大的参考意义.
In order to improve recovery of thin sand heavy oil loop in Gudao Oilfield, using the methods of reservoir engineering, numerical simulation and performance analysis studied infilled well pattern adjustment according to the distribution feature of remaining oil during the middle-last stage after many times of cyclic steam stimulation. The five spot well pattern of 141m ?00m was infilled from inverted nine-spot basic well pattern of 200m x 283 m. With the implementation of this optimum program,good results were gained,the average oil production of the single well was 13.5t/d,which was 2 ~ 3 times as much as that of old wells around; and water cut stays about 70% , which was 10% less than that of old wells around. This technology was important for improving recovery efficiency during the middle-last stage after many times of cyclic steam stimulation for the same type of the heavy oil reservoir.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2005年第6期61-63,共3页
Petroleum Geology and Recovery Efficiency
关键词
薄层稠油环
蒸汽吞吐
剩余油
井网加密
孤岛油田
thin sand heavy oil loop, cyclic steam stimulation, remaining oil, infilled well pattern, Gudao Oilfield
