摘要
方法利用数值模拟方法，研究蒸汽驱过程中，油藏压力对开发效果的影响。目的提高稠油油藏蒸汽驱开发效果。结果井口注汽于度相同的条件下，油藏压力越高，井底蒸汽干度越低；油藏压力过高（如大于8MPa），会使蒸汽驱效果明显变差，甚至导致蒸汽驱开发方案失败，一般成功的蒸汽驱油藏压力为1～5MPa。结论在注蒸汽过程中，注入压力直接影响井底蒸汽干度；为了在蒸汽驱过程中保持较低的油藏压力（1～5MPa），生产井必须排空，必要时可增力。生产井以保证采注比大于1．2。
Method The effect of reservoir pressure on development result of steam drive is studied in this paper by means of numerical simulation. Purpose To improve the developmentresult of steam drive in heavy oil reservoirs. Result With the same steam quality at wellheads, the higher the reservoir pressure is, the lower the steam quality at bottom hole is.Excessive high reservoir pressure (> 8 MPa) will evidently lead to poor result of steamdrive, or even the failure of steam drive development plan. Generally, the reservoir pressurefor successful steam drive is 1~5 MPa. Conclusion During steam injection, bottom holesteam quality is directly affected by injection pressure. In order to keep lower reservoir pressure (1~5MPa) during steam drive, the production well must be clearly discharged. If necessary, the number of production wells may increase to assure the production-injection ratiois more than 1. 2.
出处
《特种油气藏》
CAS
CSCD
1997年第4期15-18,共4页
Special Oil & Gas Reservoirs
关键词
稠油油藏
数值模拟
油藏压力
蒸汽驱
heavy oil reservoir, numerical simulation, reservoir pressure, steam flooding
