THERMODYNAMIC METHOD FOR TREATING OF BOTTOM-HOLE ZONE Russian patent published in 2000 - IPC

FIELD: mining industry. SUBSTANCE: method can be used for obtaining and restoring of output of producing wells which is dropped due to sedimentation of bed. According to method, heat generator and immersed-type electric pump are simultaneously lowered into well. Pressure is increased by heating of liquid until changing its physical state within interval of well isolated by packers against productive reservoir. Reduction of pressure is achieved by cooling and condensation of liquid found in well. Number of liquid heating cycles is determined by power and preset degree of treating productive bed until achievement of desedimentation. Output of well is monitored in process of raising liquid from well to surface by evaluation of consistency of liquid in well without withdrawing heat generator. Application of method enhances efficiency of treating low-output reservoir with simultaneous reduction of material and labour cost. EFFECT: higher efficiency. 1 dwg