摘要
冀东油田高13断块油藏渗透率低,水驱开发效果差。但油藏温度和压力较高,原油粘度小,适宜注烃气驱提高原油采收率。针对高13断块油藏,在流体相态拟合的基础上,应用油藏数值模拟技术进行了注烃气驱提高采收率方案优化研究。研究结果表明,气水交替驱是最佳的注入方式。优化后的气水交替驱注采参数为:最佳的注气段塞大小为0.3HCPV,气水比为1∶1～1∶2,注入速度为0.03～0.04HCPV/a,注采比为1.0～1.1,优化方案与水驱方案相比提高采收率9.7%。
The reservoir permeability of Block Gao-13 was very low and the effect of waterflooding was poor in Jidong Oilfield.Aiming at Block Gao-13,the optimization scheme of enhanced oil recovery was studied by miscible flooding of hydrocarbon gas based on matching of phase state through reservoir numerical simulation.The result shows that water alternating gas (WAG) flooding mode is the best. The optimized injection-production parameters of WAG flooding are summarized as follows:the optimal gas slug size is about 0.3 HCPV and the gas-water ratio ranges from 1.1 to 1.2.The injection rate varies between 0.03 and 0.04 HCPV per day and the injection-production ratio keeps between 1.0 and 1.1.The value of enhanced oil recovery of optimized WAG flooding scheme is 9.7 percent more than that of water flooding.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第4期131-135,共5页
Journal of Oil and Gas Technology
基金
中国石油天然气股份有限公司科技攻关项目(7-02A-01-02)
关键词
注烃气驱
数值模拟
气水交替
参数优化
提高采收率
冀东油田
hydrocarbon gas flooding
numerical simulation
water alternating gas
parameter optimization
enhanced oil recovery
Jidong Oilfield
