浅薄特超稠油吞吐中后期蒸汽驱可行性研究

蒸汽驱是稠油油藏经过蒸汽吞吐开采以后，进一步提高原油采收率的主要热采阶段。采用蒸汽驱开采使蒸汽冷凝前缘遗留的残余油饱和度，在蒸汽波及范围内降到很低，从而提高了驱油效率，达到较高的采收率。本文分析研究了河南油田浅薄特超稠油吞吐中后期地下油藏动态状况，指出了适宜进行蒸汽驱的各种有利条件，明确了浅薄特超稠油吞吐中后期进行蒸汽驱的可行性。

Feasibility Study of Steam-flooding of Shallow Thin Ultra- and Super-Heavy Oil Reservoirs during Medium and Late Stages of Steam Huff and Puff

Steam flooding is a main thermal recovery stage for heavy oil reserviors following steam huff and puff, used for improving ultimate deep oil recovery. The residual oil saturation reduces when the front steam gets cold by steam flooding recovery,thus it increases driving oil efficiency and enhances oil recovery. Based on study of the underground reservoirs' behaviors, various advatagous conditions are presented suitable for steam flooding. And the feasibility of steam flooding for the shallow thin ultra and super-heavy oil reservoirs are testified during the medium and late stages of steam huff and puff.