PROCESS OF INCREMENTAL HEATING OF HYDROCARBON CONTAINING FORMATION IN CHESS-BOARD ORDER Russian patent published in 2012 - IPC E21B43/24 

FIELD: oil and gas production.

SUBSTANCE: method includes stages, in the course of which with the aid of one or several primary heaters located in two or more first formation areas the heat is supplied to two or more first areas so that supplied heat makes the first hydrocarbons move that are located in two or more first areas; at least some quantity of movable first hydrocarbons is mined with the aid of producing wells located in two or more second areas of formation, note that the first and second areas are arranged according to the chess-board pattern. Note that according to the said pattern, at least, one of the first areas is surrounded by three or more second areas, and, at least, one of the second areas is surrounded by three or more first areas; note that part of, at least, one of the second areas that is close to, at least, one producing well receives heat by movable first hydrocarbons, note that the heat from the primary heaters is not supplied to the said part by thermal conductivity; the heat is supplied to the second areas with the aim of their additional heating by means of one or more second heaters arranged in the second areas; note that chess-board pattern processing is begun in the centre of the area or near it and then is moved spirally outside remaining the support areas that are not heated or heated with less amount of heat to resist geo-mechanical movement, shift and/or strain in the formation.

EFFECT: increase of hydrocarbons production efficiency.

14 cl, 7 dwg