Most of oil fields are developed by peripheral water injection,the effects of salt water drive are favorable,and has gained high current oil recovery in low and medium water-cut stage;at present,some old oil fields has approached high water-cut economic limit of secondary oil recovery stage.
多数油田采用边缘注水开发,盐水驱油效果好,中低含水期采出程度高;目前老油田已接近二次采油高含水经济界限。
downdip peripheral injectio
沿下倾部位边缘注水
downdip row of injection well
沿下倾部位注水井排
downdip row of production well
沿下倾部位生产井排
I watched the water drip off the rim of Tom's baseball cap.
我注视着雨水沿着汤姆棒球帽的边缘滴落。
The water poured down the pipe.
水沿着管子往下倾泻。
curb:a concrete border or row of joined stones forming part of a gutter along the edge of a street.
路缘:形成街道边沿一部分的排水沟的明确界限或砌成的一排石头.
a broad plank along a gunwale to keep water from splashing over the side.
沿船舷上缘挡住两边溅起的水的板子。
The extreme edge or margin; a border.
边，边沿，边缘极端的边线或边缘；边沿，边界
The road declines to the water's edge.
道路下倾，直到水边。
The margin of land bordering a body of water.
（河、池等的）边沿与水体毗连的陆地的边缘
The part or side below or under.
下部,底部下面的部分或边缘
A saw that is reinforced by a metal band along its back edge.
脊锯一种沿其后部边缘被金属环加固的锯
On, by, with, or toward the edge.
在边缘，在边沿上在、沿、带有、或朝向边的
The limits of the altered sands are considered to be the most forward penetration of the oxidizing groundwater.
蚀变的沙子边缘被认为是具有氧化作用的地下水所能到达的最前沿。
Related to, located in, or constituting an outer boundary or periphery.
周缘的关于、位于或组成外部边界或周缘的
They stretch''d in never-ending line
它们沿着湖湾的边缘
They outskirted the lawn.
他们沿草地边缘走。
worn away or tattered along the edges.
边缘部位破旧的或破烂的。
