additive for oil的用法和样例：
- Wettability reversal agent is an important additive for oil base drilling fluid.
- SDJ2 fluid loss additive for oil well cementing is synthesized from water-soluble modified natural polymer HEC with suitable average molecular weight, and the properties of the grout contained SDJ2 is tested in laboratory.
- There were prospecting for oil in the desert.
- Some geologists are prospecting for oil here.
- They are prospecting the region for oil.
- A fall in demand for oil tankers has put jobs in jeopardy.