спасибо заранее

n) Carry out feasibility estimates to outline the area of production drilling to reservoir oil and oil-water zones.

General comments:
Items in a list, table, or series should be in the parallel format.
Incorrect
(a) Laboratory equipment should be assembled;
(b) then arrange samples in proper sequence;
(c) tests are run;
(d) we recommend that results then be recorded.
Correct
(a) Assemble laboratory equipment,
(b) arrange samples in proper sequence;
(c) run tests,
(d) record results.