问题 问答题 简答题

简述凝气藏形成的基本条件。

答案

参考答案:

①在烃类物系中气体数量必须胜过液体数量,才能为液相反溶于气相创造条件

②地层埋藏较深,地层温度介于烃类物系的临界温度于临界凝结温度之间,地层压力超过该温度时的露点压力,这种物系才可能发生显著的逆蒸发现象。

所以随着储集层的埋深加大,地层压力和地层温度都会随之增加。

当地层温度达到油—气物系的临界温度后,地层压力愈大,油—气物系愈易转化为单相气态,大大促进了地下深处储集层内的油气运移和聚集,形成凝析气藏。

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任务型阅读(10小题*1=10分)
You must hear about earthquakes,but do you know what to do during and after an earthquake?Here is some advice for you:
Before an earthquake.It is necessary to prepare yourself and your family.All family members should know how to turn off gas,water and electricity and know useful telephone numbers(doctor,hospital,police,119,etc).Never put heavy things over beds.
During the earthquake.It’s important to for each of you to stay calm.If you are indoors ,quickly move to a safe place in the room such as under a strong desk or a strong table.It can protect yourself from falling things.Stay away from windows ,large mirrors,heavy things and so on.If you are cooking,turn off the gas.
If you are outdoors,move to an open area like a playground.Move away from buildings,bridges and trees.If you are driving,stop the car as soon as possible .Stay in your car.
After an earthquake.Once the shaking stops,do not run out of the building at once.It’s  better to wait and leave when it is safe.
Check around you and help the people in trouble.If your building is badly broken,you should leave it.If you smell or hear gas,get someone outside and open windows and doors.If you can do it safely,turn off the gas.Repeat it to the gas company.
Some useful    小题1:    about earthquakes
 
Before an earthquade
  小题2:   yourself and your family.
Don’t   小题3:  to turn off gas,water and electricity.
Remember some useful telephone numbers and not to 小题4:  heavy things over beds.
 
  小题5:an earthquake
  小题6:  calm is important for each of you.
Moving to a safe place in the room can protect yourself from falling things if you are   小题7:    .
Remmember to turn off the gas if you are cooking.
Moving to an open area and away from builings is  小题8:   if you are outdoors.
Remember to stop your car and stay in it if you are driving.
 
After an earthquake
Run out of the building    小题9:   it’s safe.
Check around you and help the people in trouble.
Leave your badly broken building.
Keep everyone outside and ererything    小题10:   if you smell or hear a gas .
 
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