为了探索利用蒸汽驱方式提高采收率的新途径，在该油田开辟了蒸汽驱先导试验区。
In order to seek out a new way to enhance recovery factor by steam flood, a pilot test area of steam flood has been set up in this oil field.
齐40块蒸汽驱先导试验取得了较为理想的开发效果，但由于受油藏非均质性的影响，蒸汽驱过程中出现了蒸汽波及效率低、稳产时间短等现象。
Steam drive pilot test in Block Qi40 has achieved ideal development result, but the sweep efficiency is low and stable production period is short because of reservoir heterogeneity.
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