Passing 30th years of building and development, the J. V. Vietsovpetro has become main force of Vietnam petroleum. Vietsovpetro has enormous oil fields about 400 wells over the exploiting area and the areas with promising oil resources with the depth from 50 to 150m. Vietsovpetro has safety exploited near 200 million crude old and billion cubic meters of gas. In order to have the achievements, Vietsovpetro has applied many solutions among them "maintenance good technical conditions of oil fields" is the important one. Here below, the authors present in detail the solution.