摘要
通过研究地层流体的运移动力、运移通道、供水方式与供水区、泄水方式与泄水区 ,可以较为准确地建立起现今地下水动力场模式。松辽盆地边缘大气水在重力作用下下渗形成向心流 ,凹陷内部在沉积—埋藏过程中发育地层压榨水离心流 ,离心流与向心流汇合发育越流泄水区。朝阳沟阶地、长春岭背斜带在离心流减弱、消亡后 ,地层水处于滞留状态。地层压榨水离心流是松辽盆地油气运移和聚集的主要动力。地下水动力场的形成与演化决定了油气水的分布规律 :油分布在地层压榨水离心流及其越流泄水区 ,气分布在越流泄水区 。
Current groundwater dynamic field pattern may be accurately set up through investigating migration dynamics and passages,water supplying mode and recharge area as well as water draining mode and discharge area.In Songliao Basin,the meteoric water around the basin margin percolates down to form a centripetal flow by the action of gravity,a centrifugal flow of expressed water,however,may be formed in the process of sedimentation and burial within the basin.And an override flow discharge area can be grown up owing to the joining of the centrifugal with the centripetal flow.Formation water at Chaoyanggou bench and Changchunling anticlinal belt has been detained after the centrifugal flow's being weakened and depleted.The centrifugal flow of expressed water was the major force of the hydrocarbon migration and accumulation in Songliao Basin.The distribution of oil,gas and water is dependent upon the formation and evolution of the groundwater dynamic field,i.e.oil is mainly distributed in the areas of the centrifugal flow of expressed water and the override flow discharge area,gas in the override flow discharge areas and water in the meteoric water percolation areas.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2003年第2期6-9,共4页
Natural Gas Industry
关键词
松辽盆地
扶杨油层
地下水动力场
演化
油气藏
形成
Songliao Basin,Fuyang reservoir,Hydrodynamic force,Oil and gas field,Formation
