N. P. Umanchik

New design of the gripping part of automatic drilling tongs with two-stage self-adjustment of the serrated elements

N. P. Umanchik, V. P. Belugin, A. G. Shestov, 1989 .

Investigation of adhesive strength of metallized-polymer coatings of pump rods

N. P. Umanchik, K. V. Zvezdinskii, R. M. Bikchentaev, 1990 .

The Neftemash closed joint-stock company

N. P. Umanchik, 1994 .

Industry-wide coordination of petroleum engineering

N. P. Umanchik, M. P. Denisov, 1994 .

Production of equipment for the oil and gas industry in the Russian federation

N. P. Umanchik, 1999 .

Petroleum-production engineering

N. P. Umanchik, V. I. Pavlov, N. P. Umanchik, 1977 .