DEVELOPMENT METHOD OF HEAVY OIL OR BITUMEN MINE FIELD WITH CONTROL OF WELL PRODUCTION EXTRACTION Russian patent published in 2010 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: method involves construction of upper injection well and lower production well with horizontal sections located one above the other, pumping of heat carrier through horizontal injection well with formation warming-up, creation of steam chamber and extraction of production with pump through horizontal production well with decrease of extraction in temperature peak zones, thus performing uniform warming-up of steam chamber. At construction of wells their horizontal sections are equipped with filters installed opposite productive formation zones. In production well the filters are made in the form of sections dividing the productive formation into zones, inside which there arranged is pump shank with the valves controlled depending on temperature, made in the form of flexible collars filled with the material expandable at temperature increase, which are installed outside the shank between inlet holes and arranged opposite the appropriate sections of filters with possibility of their tight shutoff at temperature increase of produced heavy fuel oil or bitumen to 0.5-0.9 of the temperature at which heat carrier penetrates into horizontal section of production well from horizontal section of injection well.

EFFECT: possible automatic cutoff of interval of production well horizontal section to which heat carrier was moved without constant control of temperature condition in steam chamber.

1 dwg