穿过山谷的河流，可能穿过地下水位和它下边的不渗透岩石。
A river cutting a valley may cut through a water table and the non-porous rock beneath it.
在某些地方，两个不渗透岩石层，把一个渗透岩石层夹在中间。
In some places, a layer of porous rock is sandwiched between two layers of non-porous rock.
隔层是指油气田开发过程中对流体运动具有阻挡作用的不渗透岩石。
The restraining barrier was defined as the non-permeable rocks that blocked the flow during the production of oil and gas development.
雨水向下流，流到不渗透岩石层，接着，向旁边流到河流穿过岩石层的那个地方。
Rainwater flows down to the non-porous layer of rock, and then it flows sideways to where the river cuts through the rock layers.
如果岩石是渗水的——岩石中有许多小孔，比如沙石——水将渗透过这些小孔，直到由不渗透水的岩石构成的那个层面。
If the rock is porous — has many small holes in it, like sandstone — water will sink through these holes until it reaches a layer of rock that is not porous.
一个油田由形态上会圈闭油气、并被不渗透的或封闭岩石所覆盖的储集层组成。
An oil field consists of a reservoir in a shape that will trap hydrocarbons and that is covered by an impermeable or sealing rock.
不渗透的岩石对于储层是期望的封隔或盖层岩石，因为油气不能轻易透过它们。
Impermeable rocks are desirable sealing rocks or cap rocks for reservoirs because hydrocarbons cannot pass through them readily.
不渗透的岩石对于储层是期望的封隔或盖层岩石，因为油气不能轻易透过它们。
Impermeable rocks are desirable sealing rocks or cap rocks for reservoirs because hydrocarbons cannot pass through them readily.
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