INTRA-FORMATIONAL HYDROCARBON PRODUCTION FROM HYDROCARBON CONTAINING FORMATION WITH THE USE OF BARRIERS Russian patent published in 2007 - IPC E21B43/24 

FIELD: enhanced recovery methods for obtaining hydrocarbons, particularly underground reservoir treatment to create barriers around treatment zone to prevent fluid flow into treatment zone or from treatment zone.

SUBSTANCE: method involves suppressing fluid flow from formation area surrounding the first zone to be treated into above formation zone; heating part of the first formation zone to be treated to increase temperature in the zone up to value exceeding thermal decomposition temperature; controlling heat transmission from heaters into above formation zone part to provide uniform permeability in the formation zone part; producing mixture from formation; controlling pressure in the first formation zone to be treated to regulate composition of mix to be produced from formation.

EFFECT: increased efficiency.

42 cl, 15 dwg