DEVELOPMENT METHOD OF UNDERGROUND RESERVOIR IN PERMAFROST SEDIMENTARY ROCKS Russian patent published in 2011 - IPC E21C45/00 B65G5/00 

FIELD: mining.

SUBSTANCE: development method of underground reservoir in permafrost sedimentary rocks involves drilling of sand permafrost formation with a well, installation of process columns in it, supply of water, compressed air, heat carrier via them, development of working-out-capacity by thermal destruction of frozen rocks and air-lifting of developed hydraulic fluid of sand to the surface with water supply for weighing of deposit to the air-lift suction zone and additional water to working-out-capacity with control of water-air boundary level position by regulating the flow of supplied water. Well head is tightened and excess pressure is increased in underground reservoir by supplying compressed air to the well; during thermal destruction of frozen rocks there used as heat carrier is steam which is supplied with constant flow together with additional water; additional water flow is changed to control the water-air boundary level position, and recirculated water forming during separation of sand from lifted hydraulic fluid is supplied to weigh the deposit.

EFFECT: improving development efficiency of underground reservoir in permafrost sedimentary rocks.

1 dwg