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1 高速蒸汽驱通过对国外24个现场蒸汽驱试验结果所作的分析得出,注汽速度愈高、开采效果愈好及高速蒸汽驱可有效地开采浅薄层超稠油油藏的结论。最为成功的范例是美国斯马克佛油田的开发。该油田采用这一方法在一面积为10英亩的反五点井组中成功地开采了厚度只有4.8m的油层,累积油汽比达0.24。它所用的注汽速度高达489.8m~3/d。 2 高速脉冲注汽该法是采用数倍于常规蒸汽吞吐的注汽速度,以脉冲方式向地层注汽,焖井后开采。其原理是:采用极
1 High-speed steam flooding The analysis of the results of 24 field steam flooding tests abroad shows that the higher the steam injection rate is, the better the mining effect is and the conclusion that high-speed steam flooding can effectively mine shallow super-heavy oil reservoirs. The most successful example is the development of the United States Smokows field. Using this method, the field successfully mined a reservoir of only 4.8 m in an anti-5-well area of 10 acres with a cumulative oil-gas ratio of 0.24. It uses the steam injection speed up to 489.8m ~ 3 / d. 2 high-speed pulsed steam injection The method is the use of steam injection steam several times the normal speed of the huff, injection to the stratum impulse steaming, brazing wells after mining. The principle is: the use of very