METHOD AND DEVICE FOR DEVELOPMENT OF HEAVY OIL OR BITUMEN DEPOSIT WITH CONTROL OF WELL PRODUCTION DRAWDOWN Russian patent published in 2010 - IPC E21B43/24 E21B34/08 

FIELD: oil and gas production.

SUBSTANCE: invention relates to development of high-viscosity and bitumen oil deposits. Method includes building upper injection well and lower producing well with horizontal sections arranged one over another and equipped with filters. Coolant is pumped through injection well with heating of bed. Production is taken through producing well with reduction of takeoff in zones with temperature peaks. Pump tail is installed inside filter of producing well with temperature-controlled valves. Takeoff is reduced due to automatic closure until valves are fully closed at 0.5-0.9 of temperature, at which coolant breaks into producing well. Device for method realisation includes upper injection well and lower producing well with horizontal sections arranged one over another and equipped with filters. Injection well is equipped with steam generator at wellhead, and producing well is equipped with submersible pump. Producing well contains tail of submersible pump with temperature-controlled valves pressed from their seat with spring, and towards seat - by material that expands under action of temperature variation and increases in longitudinal direction at 0.5-0.9 of temperature, at which coolant breaks into producing well.

EFFECT: reduction of material expenses for realisation of method and increased reliability of device operation.

2 cl, 3 dwg