METHOD OF DEVELOPMENT OF HYDROCARBON FLUIDS (12) Russian patent published in 2016 - IPC E21B43/243 

FIELD: mining.

SUBSTANCE: invention relates to mining. According to method of high-viscosity oil and/or natural bitumen production horizontal production well is drilled over productive stratum, parallel to first horizontal production well at same the depth and in the same direction second horizontal production well is drilled, between them in parallel at the same depth and in the same direction horizontal injection well is drilled. In injection well pipe string is lowered with plugged end and holes, made on end section, for pumping of working agents, pipe section with holes is limited by packers at both ends, based on properties of oil-bearing rock. Heated working agent is pumped to productive formation, productive formation is heated to ignition temperature of in-situ hydrocarbon fluid, inert working agent is replaced for oxygen containing working agent, hydrocarbon fluid is ignited in formation. Formation between wells is heated, while tracking and maintaining condition of keeping and propagation of combustion front. In area of horizontal section of production wells temperature is brought to temperature of fluidity state of hydrocarbon fluid and heated product is withdrawn, wherein intensity of combustion process and heating of stratum in interwell and adjacent space are controlled using temperature and pressure control device, while maintaining stratum temperature in required limits is performed by changing flow rate of supplied working agent. After complete exhaustion of area of productive stratum within first step of installation of packers pumping of working agents is temporarily stopped, pipe with holes and two limiting packers is moved in direction of mouths of production wells by no less than length of distance between packers, packers are brought to working state and development of next area of productive stratum is continued, thus whole horizontal section of injection well is developed. Pumping of waterproofing sealant is made in spent interval.

EFFECT: increase of fluid release of stratum and increase of production of hydrocarbon sources of energy - fluids, providing control and regulating process of in-situ combustion and heating of rocks.

1 cl, 1 dwg