OsnoPlug ™ is a crosslinkable polymer with adjustable setting time.

Osno Plug S ™ is an acid-soluble form of the composition.

TECHNOLOGY

Before the crosslinking, the composition is a flexible, fluid liquid. Preparation is possible both in the mud mixing system on the drilling rig and using standard cementing equipment. The rheological characteristics of the composition allow the introduction of colmatants of all known types. An elastic gel, which is obtained after the cross-linking, has a good adhesion to metal and rock.

The way of proceeding is based on the ability of the composition to gelation in a predetermined time after mixing.

APPLICATION

Applied for controlling of circulation losses of low and medium intensity, killing of wells. The temperature range of OsnoPlug ™ technology application is from 10 to 70 ° С, OsnoPlug S ™ - from 10 to 50 ° С.

ADVANTAGES

• low density of the compound;
• low solids content;
• the gel has zero permeability;
• high elasticity and adhesion to metal and formation;
• OSNO-PLUG S ™ - the ability to pump in the composition through the measure while drilling system.

RESTRICTIONS

• Total circulation losses complicated by static drilling fluid level drop.
• the presence of karst or other cavities in the loss zone;
• mixing volume limit (setting small volume packs is ineffective);
• no pressure increase at the wellhead when pumping the ahi-vis pill with an additive while closed casing annulus;
• the presence of hydrogen sulfide aggression in the circulation loss interval.