东营凹陷压实水水动力特征

HYDRODYNAMICS OF COMPACTION DRIVEN FLOW IN THE DONGYING DEPRESSION

压实流盆地被认为是具有离心流模式的地下水流系统。通过对东营凹陷的压实排水方向、速度、压降分布等方面进行研究发现，该盆地的压实水流形式有别于一般的克拉通内坳陷盆地的离心流形式，其特点体现了断陷盆地的特色。特别是提出了关于压实流盆地连通含水层内压降十分微小的结论，它将有助于加深对压实流盆地含水层内油气侧向二次运移的驱动机制的认识。

Compaction driven flow basins are believed as existing typical centrifugal flow regime of underground water.It is found that the pattern of compaction driven flow of ground water in this basin is quite different to an intracratonic basin,by studying the direction and velocity of compaction driven flow and the relationship between permeability of strata and drop of water potential,showing a profound influence on fault structures of hydrodynamic systems.It is especially pointed out that the lateral hydrodynamic gradient across a continuous acquifer is extremely low,and this conclusion will shed light on the detailed research of dri ving mechanisms of petroleum secondary migration in compaction driven flow basins.