METHOD OF RECOVERY OF OPERATING CHARACTERISTICS OF OIL AND GAS-CONDENSATE WELLS Russian patent published in 2000 - IPC

FIELD: technology of operation of oil and gas-condensate deposit; applicable in increase of production rate of wells with reduced or discontinued production rate due to bridging of producing formation well zone with viscous depositions or paraffin depositions in well cross-section. SUBSTANCE: method includes treatment of bottom-hole formation zone with hot medium, heating of well walls in zone of producing formation and section with paraffin depositions, heating of circular sections of well walls. Run into well is circular hollow flexible vessel whose circular space is filled with working fluid. The latter is treated with acoustic vibrations, and external convex parts of vessel are pressed to well wall. Internal wall of vessel is subjected to motion along well axis due to connection of its pylons with pull cable at frequency of motion selected within 0.5-1 Hz. EFFECT: considerable increase of efficiency of recovery of well operating characteristics due to more effective treatment of depositions round well walls in zone of producing formation and in wellbore. 2 cl, 5 dwg