METHOD FOR DEVELOPMENT OF KEROGEN-CONTAINING BEDS OF BAZHENOV FORMATION BY INTRA-FORMATIONAL COMBUSTION WITH INTRODUCTION OF ADDITIONAL FUEL Russian patent published in 2017 - IPC E21B43/247 

FIELD: oil and gas industry.

SUBSTANCE: additional fuel - a mixture of light oil produced from said formation and naphthalene with 1-19 wt % concentration is pumped into the beds of bazhenov formation. An oxygen-containing mixture - air is also pumped. Fuel is formed with conversion of light oil to heavy oil with increase of its density and viscosity. The injection of air is continued until the formed fuel is ignited in the bottomhole zone of injection well. The combustion front is created by said fuel and heat is applied to kerogen-containing rocks to form crack network therein. Oxidation and self-ignition of kerogen contained in rock of bazhenov formation are carried out. Kerogen is used as fuel source and kerosene-containing beds are involved in the development. The product is taken through production wells.

EFFECT: increased formation recovery by involving kerogen-containing sections of the formation in the development.

4 cl, 3 dwg, 1 tbl