Published August 2020, Pg. 27-33

Section: Technique and technology of oil-gas production

UOT: 622.276.4; 622.276.6

DOI: 10.37474/0365-8554/2020-8-27-33

Water-isolating clay-containing compositions with adjustable swelling characteristics

G.M. Panahov

E.M. Abbasov

V.D. Balakchi

The study results of swelling characteristics of bentonite in water solutions of alkali is presented and a new method providing the changes in structural characteristics and properties for formation of blocking compositions in water-saturated intervals in producing and injection wells proposed. The results of laboratory experiments justified the changes of clay minerals properties in the interrelation with water solutions of sodium carbonate and non-linear nature of changing rate of swelling characteristics. Observed effects serve the essential for a new method of isolation of high-permeability intervals and treatment of bottomhole zone, as well as the methods of water smoothing of input profile with water impact on the field