ON THE RELATIONSHIP BETWEEN THE COMPACTION OF ARGILLITES AND PETROLEUM MIGRATION IN THE YING-QIONG BASIN
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摘要: 本文从泥岩压实演化特征与油气运移的关系入手,依据声波时差以及流体压力资料,剖析和探讨本区泥岩压实演化与油气初次运移的规律,指出低压过剩区带或静水压力区带是油气运移聚集的方向和富集区,异常高压带所形成的压力封闭是本区天然气藏形成的重要条件,而异常高压带在泥岩压实过程中释放和消失以及烃类生成作用的膨胀力,则是油气初次运移聚集的动力。Abstract: Focusing on the relationship between the characteristics of argillite and petroleum migration, the authors have studied and discussed the regularity between argillite compaction and the primary migration of oil/gas within the basin, on the basis of the data of a-coustic time and fluid pressure. It is suggested that low pressure zones or hydrostatic pressured zones are the orientation prefered by petroleum migration and accumulation, and therein the areas of petroleum enrichment. Pressure seals formed in the abnormal high-pressured zones are considered as important factors for the formation of gas pools while the release and disappearance of the pressure in the abnormal high pressured zone during argillite compaction and expansion caused by hydrocarbon generation are the driving forces for the primary migration.
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[1] 真柄钦次著,陈荷立等译.压实与流体运移,1981年版 [2] 李明诚.石油与天然气运移,1987年版 [3] 黄第藩等译.油气运移(第一集),1988年版 [4] 何家雄等.中国海上油气.1989;(2) -
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