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本文评价了两种不同地质条件下油藏注蒸汽处理的可行性。所评价的地质条件是水驱三角洲砂岩和多孔石灰岩。同时介绍了如何根据具体油藏特征优选注蒸汽法。结论表明 ,应根据二次采油后期含油饱和度分布设计轻质油藏注蒸汽法。轻质油藏注蒸汽法和常规稠油油藏注蒸汽法完全不同。本文重新评价了轻质油藏注蒸汽失败的项目。该评价正确地预测了失败是由早期蒸汽突破引起的。结论表明 ,通过详细地考虑地质和驱替过程的物理现象 ,可用先进的油藏描述法和模拟工具更准确地预测这些注蒸汽项目的处理动态。
This paper evaluates the feasibility of steam injection in two different geological conditions. The geological conditions evaluated are waterflood delta sandstone and porous limestone. At the same time, how to optimize steam injection according to specific reservoir characteristics is introduced. The conclusion shows that the steam injection method for light oil reservoirs should be designed according to the oil saturation distribution in the late stage of secondary oil recovery. Steam injection of light oil reservoirs is quite different from steam injection of conventional heavy oil reservoirs. This article reevaluates the project for failure of steam injection of light oil reservoirs. The assessment correctly predicted that the failure was caused by an early steam breakthrough. The conclusion shows that by carefully considering the physical phenomena of the geological and displacement processes, advanced reservoir description and modeling tools can be used to predict more accurately the treatment dynamics of these steam injection projects.