摘要
利用稠油热采数值模拟手段,以辽河油田超稠油油藏为基础,对比FAST-SAGD与传统双水平井SAGD的开发效果,并分析影响FAST-SAGD的关键因素,以提高SAGD的开发效果。研究结果表明:FAST-SAGD蒸汽腔横向发育速度比传统SAGD明显加快,采收率提高2.5%,累计油汽比增加0.039 m3/m3,生产时间缩短46.6%。以采收率与热效率作为评价指标,得到FAST-SAGD影响因素的最优值:添加井与SAGD井组的生产井之间垂向距离为6m,启动时间为12个月,吞吐周期数为2,注汽压力为10 MPa,注汽速度为800 m3/d,SAGD井组注气井注汽速度为200 m3/d。研究成果对FAST-SAGD的矿场应用具有一定的理论指导意义。
Heavy oil thermal recovery numerical simulation is used to compare the performances of FAST-SAGD and conventional dual-horizontal-well SAGD in the super heavy oil reservoirs of Liaohe Oilfield. The key factors related to FAST-SAGD performance are analyzed to improve SAGD performance. Result illustrates that the steam chamber of FAST-SAGD expands significantly faster than that of conventional SAGD,the recovery factor is increased by 2. 5%,the cumulative oil-steam ratio is increased by 0. 039 m3/ m3 and the production period is reduced by 46. 6%. Recovery factor and thermal efficiency are used to gain the optimum parameters of FAST-SAGD: the vertical distance between the adding well and production well of SAGD wellgroup is 6 m,the start-up period is 12 months,the huff-puff cycle number is 2,the steam injecting pressure is 10 MPa,the steam injecting rate is 800 m3/ d and the steam injecting rate of injection well in SAGD wellgroup is 200 m3/ d. This research could provide some theoretical guidance for field application of FAST-SAGD technology.
出处
《特种油气藏》
CAS
CSCD
北大核心
2016年第2期89-92,155,共4页
Special Oil & Gas Reservoirs
基金
国家科技重大专项“新一代油藏数值模拟软件”(2011ZX05009-006)
中央高校基本科研业务费专项资金项目“非常规油气储层特征及开采机理研究”(2652015142)
