As it has long been in relatively stable tectonic setting, it provides the favourable geologic conditions for oil-gas generation, accumulation and preservation.

由于盆地长期处于相对稳定的大地构造环境，这就为油气的生成、聚集、保存提供了有利的地质条件。

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Tectonic holistic preservation is the main geologic setting of natural gas accumulation and the significant condition of late gas replacement and preservation.

整体封存构造保存条件是该盆地天然气成藏的主体地质背景和晚期成藏保存的主要条件。

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Direction of oil? Gas migration and accumulation at Yihezhuang area are pointed out and the migration boundary of the petroleum is defined in combination with regional geologic background.

结合区域地质背景，指出了义和庄地区油气的运移和聚集方向，确定了石油的运移边界。

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