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小洼油田属中深层稠油油藏,开发方式为蒸汽吞吐及蒸汽驱,取得了良好的开发效果,但随着开发程度的不断提高,生产井出现油层堵塞,注汽压力高,产液产油量下降的问题,经研究发现生产井堵塞是近井带有机质堵塞与油层深部无机堵塞综合作用所致,因此研究开发了有机解堵剂和多氢酸缓蚀酸复合解堵技术,现场应用4井次,有效率100%,平均单井增油2.3t/d,累计增油2500t。
The Xiaowa oil field belongs to medium and deep heavy oil reservoirs, and its development mode is steam stimulation and steam flooding. Good development results have been achieved. However, with the continuous improvement of development level, oil wells in production wells become clogged with high pressure of steam injection and liquid production It is found that the blockage of production wells is caused by the blockage of organic matter near the wellbeds and the combined effect of deep inorganic clogging in the oil reservoir. 4 times, the efficiency of 100%, the average single-well oil 2.3t / d, the cumulative oil 2500t.