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5. Name and characterize reagents of special purpose for
drilling fluids.
6. What reagents are used to increase the density of drilling
fluids (weighting agents)?
7. Explain the peculiarities of drilling in of productive
formations.
8. What are the requirements for drilling fluids which drill in
productive formations?
9. Name and characterize the parameters characterizing
drilling fluids.
10. Requirements for the drilling in productive formations by
drilling.
11. Drilling in productive formations by perforation. Types
of perforation.
12. The essence and peculiarities of hydraulic jet perforation.
13. Name and characterize the requirements for chemical
agents used for well drilling.
14. How does the filtrate of the drilling fluid influence the
filtration characteristics of the reservoir rock?
15. Name and characterize the requirements for the methods
of drilling in of productive formations by drilling.
16. Methods and peculiarities of completion of producing
and injection wells.
17. Explain the role of weighting agents of drilling fluids,
give examples and give them a brief characteristics.

ЗМ2. Materials and chemicals used during wells
operation, for the increase of their productivity and in the
system of treatment

Brief description of methods of wells operation and
reagents which are used. The reasons of deterioration of bottom-
hole formation zone and its influence on productivity of wells.

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