METHOD OF HOT WELL DEVELOPMENT OF HIGH-VISCOSITY OIL DEPOSIT BY SINGLE-BED SYSTEM Russian patent published in 2014 - IPC E21B43/24 

FIELD: oil-and-gas industry.

SUBSTANCE: proposed method comprises making the production gallery in productive oil bed and under it, drilling underground gently dipping and/or horizontal injection and production wells fro productive gallery, steam injection from surface steam feed wells via injection wells and extraction of formation fluid via production wells. In compliance with this invention, one injection well and one production well are combined into pair to make separate drain-injection element. Drilling part of injection and production wells in every drain-injection element is laid with allowance for arrangement of well bottoms in section outline nearby each other to their intersection to make zone of bottoms converging. Note here that in plan of injection paths of two adjacent drain-injection elements are located between production wells while mouths of every pair of injection and production wells of adjacent drain-injection elements make the zone of mouths convergence. Note here that drain-injection elements are distributed uniformly over the entire area of the section in one or several tiers subject to bed depth.

EFFECT: allowance for gas bearing bed strained state change influence on change of working area filtration factors.

1 ex, 4 dwg