English to Russian Tech/Engineering Petroleum Eng/Sci

Downhole Floats
For normal drilling operations, 1.8.9 recommends that a downhole float be used.
However, for most trips made during fishing operations this option is not available due to fishing tool requirements, etc.
Extra care must be taken making these trips:
Always circulate at least one bottoms up before tripping out.
Extra diligence on tripping procedures: flow check hole fill, reduced tripping speed.
Confirm crew competence of installing the stabbing valve.
Consideration should be given to run a **profile sub** that would provide the option of setting a back pressure float, or plug, etc.