FIELD: oil and gas production. SUBSTANCE: method includes drilling and developing first and second pairs of wells where each pair consists of injection well terminating in deposit and productive well with its bottom being in deposit below the level of injection well, circulation of steam through injection wells, and alternating (i) injection of steam into and extraction of hydrocarbons from productive wells and (ii) injection of steam into injection wells and simultaneous extraction of hydrocarbons from productive wells. Steam injection pressure in the first-pair injection well exceeds that in the second pair. EFFECT: increased productivity.
Authors
Dates
1997-12-10—Published
1992-11-12—Filed