1·The first slug injected is usually a water preflush, used to condition the reservoir.
最先注入的段塞通常是用来调节储层的水前置液。
2·The injection is done in several stages with each chemical or water injected during that stage called a slug.
注入过程分几个阶段进行，在每阶段注入的一种化学剂或水都称为段塞。
3·Then a micellar slug of surfactant, alcohol, brine, and oil is injected to reduce the surface tension of the oil.
然后注入表面活性剂、醇、盐水和油的胶束段塞，以降低油的表面张力。
4·If there is a likelihood of over-running or fingering, as in most present projects, water can be injected and a repeated solvent gas slug injection scheme applied.
像在目前的大多数工程中存在的那样，如果有水窜或指进现象发生，就可进行注水或反复有溶剂气体段塞进行处理。