METHOD FOR DEVELOPMENT OF HYDROCARBON FLUID DEPOSITS Russian patent published in 2016 - IPC E21B43/243 E21B7/04 

FIELD: mining.

SUBSTANCE: invention relates to mining. Method for development of hydrocarbon fluids includes construction of double-shaft production horizontal well in area of bottom of productive formations of rock, double-shaft injection horizontal well above double-shaft production horizontal well, pumping heat carrier to injection well and extraction of product from production well. Horizontal production well is drilled over productive formations, above horizontal well parallel to it in reverse direction at a distance from production well, a horizontal injection well is drilled. Pipe string is lowered into injection well with plugged end and made on end section holes for pumping working agents, pipe section with holes at both ends is limited by packers, heated working fluid is pumped to productive formation and productive formation is heated to ignition temperature of in-situ hydrocarbon fluid. Then performing replacement of inert working agent with oxygen-containing working agent and igniting hydrocarbon fluid in formation. While controlling intensity of combustion process and warming of formation, maintaining conditions of preservation and propagation of combustion front. Using heat released during combustion, heating formation between wells, in area of horizontal section of production well, bringing temperature of section to temperature of fluidity state of hydrocarbon fluid and heated product is extracted. Using temperature control device, controlling heating of reservoir in interwell and adjacent space, and maintaining formation temperature in required range is performed by changing flow of supplied oxygen-containing working agent. After extraction of product and complete exhaustion zone of productive formation within first step of installation of packers pumping of working agents is temporarily stopped. Then moving pipe with holes and two limiting packers in direction of production well head by not less than length of distance between packers, packers are brought into working state and development of next zone of productive formation and extraction of product is continued. So entire horizontal section of injection well is developed.

EFFECT: higher efficiency of fluid extraction from productive formation, high intensity and completeness of extraction of fluids, development of multi-formation deposits of high viscous hydrocarbons.

1 cl, 1 dwg, 1 ex