METHOD OF MONITORING OF FLOODING AREA EXPANSION DURING FLOODING OF UNDERGROUND FORMATIONS Russian patent published in 2012 - IPC E21B47/10 E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: method of monitoring of flooding area expansion during flooding through underground formation includes the following stages: determination of physical properties of the formation, pumping of flood agent to the formation through at least one injection well, thus inducing movement of oil-in-place towards at least one production well. At that flood agent is highly dispersed gas-liquid mixture, size of its gas bubbles are not more than average diameter of oil-bearing formation pores. After flooding the same physical properties of the formation on the same area are determined. Expansion of flooding area is monitored by recording changes in physical properties of the formation resulted in the flooding area expansion.

EFFECT: increasing efficiency of monitoring of flooding area expansion and improving environmental safety.

7 cl, 1 dwg, 1 ex