国外蒸汽泡沫驱矿场实施效果

Field Application of Steam Foam Flooding in Foreign Oilfields

以文献调研手段对18个国外蒸汽泡沫驱油田区块的现场实施效果进行评价,研究了蒸汽温度、蒸汽干度、起泡剂类型、起泡剂质量分数、注入时机和起泡剂注入方式对蒸汽泡沫驱增产效果的影响。蒸汽泡沫驱广泛用于提高蒸汽驱或蒸汽吞吐的蒸汽波及效率,进而提高热采的采收率。蒸汽泡沫驱在美国、加拿大、委内瑞拉的众多油田都进行了成功的先导试验及工业化应用。结合蒸汽泡沫驱矿场实施效果,对蒸汽泡沫驱各个影响因素提出了合理的建议,为实施蒸汽泡沫驱技术提供参考。

This paper reviews field applications of steam foam flooding in foreign oilfields,analyzes and summarizes the rules based on 18 oilfield cases.Specifically,we investigated how steam temperature,steam dryness,surfactant type,surfactant concentration,and timing and method of injecting surfactants influence the stimulation effect of steam foam flooding.Steam foam has been widely used to improve the sweep efficiency of steam flooding or cyclic steam stimulation,and consequently improving thermal recovery.The technology has been suc⁃cessfully piloted and applied on an industrial scale in many oil fields such as in the United States,Canada,and Venezuela.Finally,accord⁃ing to the field performances,we put forward some proposals for improving steam foam flooding,with the intent to provide referential sup⁃port to field application of steam foam flooding.