废弃河道 meaning in Chinese

abandonded path
abandoned cha el
abandoned channel

To meander channel , because the channel continuously moved , form duplicate fluvial sand bodies largely , and there are many area of non sandbodies or in fluvial sandbodies , there are some abandoned channel , all make the continuous of sandbodies poor upper the meander channel sandbodies , so remained oil is mainly distributed in sandbodies in fluvial channel , abandoned channel and non sandbodies area nearby
对曲流河砂体，由于平面上曲流河反复迁移和改造，以侧蚀和侧积方式形成了面积广阔的复合曲流河砂体，内部发育有许多尖灭区及河间砂体，边部及内还存在一定数量的废弃河道，从而使曲流河上半部侧向连通性变差，这类砂体中剩余油主要分布于河间砂、废弃河道部位及尖灭区附近。