DEVELOPMENT METHOD OF HIGH-VISCOUS OIL DEPOSIT Russian patent published in 2010 - IPC E21B43/243 

FIELD: oil and gas industry.

SUBSTANCE: method involves fuel pumping through vertical injection wells, air pumping - through the other injection well, arrangement of in-situ combustion and product selection through production well with horizontal shaft in bottom part of formation. Production well is equipped with temperature sensors throughout the length of horizontal section through which product is extracted. Injection well with horizontal section located above horizontal section of production well by the value exceeding the air burst value is used as injection well for air supply. As injection air supply wells there used is a number of wells the bottomholes of which are located above horizontal section of injection air supply well by the value exceeding air and fuel burst value. Fuel supply through vertical wells is controlled so that almost equal temperature of products can be maintained throughout the length of horizontal section of production well.

EFFECT: increasing efficiency at using formation combustion owing to controlling the temperature of extracted product throughout the length of horizontal section of production well, and enlarging the coverage of formation with steam chamber.

1 dwg