摘要
方法 利用数值模拟方法研究杜 32块兴隆台油层蒸汽吞吐的主要注采参数及射孔参数。目的 选择合理的注采参数 ,最大限度地改善其蒸汽吞吐开发效果。结果 数值模拟结果表明 :注汽强度以 70～ 80 t/ m为宜 ;注汽速度为 16 0～ 2 0 0t/ d;井底蒸汽干度为 40 % ;焖井时间为 3～ 5 d,可使注入热量得到最大限度的热利用率。为避免出砂 ,采液速度应控制在 40～5 0 t/ d,射孔厚度为 2 0 m,可有效提高热利用率 ;为防止底水锥进 ,渗透层避射底水厚度应大于 15 m,而低渗物性隔层应大于 5m。结论 数值模拟研究得出的注采参数及射孔原则 ,在杜 32块兴隆台油层实施后 ,取得了很好的效果。
Method Prime injection/production of steam soaking and perforation parameters of Xinglongtai formation, Du 32 block is studied with numerical simulation. Purpose Select reasonable injection/production parameters to maximize steam soaking results. Result Research shows the maximum heat utilization ratio can be achieved at injection strength of 70-80 t/m, rate of 160-200 t/d, bottom steam quality of 40%, shut-in well 3-5 d. Also, fluids production rate within 40-50 t/d and perforation intervalat 20 m will effectively avoid sand production. Besides, permeable zone uper foraied bottom depth shouldbe larger than 15 m and low permeable interbed be over 5 m can prevent the occurring of water conning.Conclusion Favorable results have been achieved in Xinglongtai formation, Du 32 block with injection/production paramelers alld perforation principles from numerical simulation.
出处
《特种油气藏》
CAS
CSCD
2000年第S1期17-18,21-57,共5页
Special Oil & Gas Reservoirs
关键词
稠油油藏
蒸汽吞吐
参数优化
数值模拟
注汽强度
注汽速度
注汽干度
杜32块
兴隆台油层
heavy oil reservoir, steam soaking, parameter optimization, numerical simulation,steam temperature, steam injection rate, steam quality, Du 32 block, Xinglongtai reservoir
