TECHNIQUE FOR WORKING OF FACE ZONE Russian patent published in 2000 - IPC

FIELD: gas and oil industry, intensified production of oil. SUBSTANCE: precipitation of paraffin, resins, asphaltites occurs in face zone of productive seam in process of production of oil. As result filtration capacity of face zone deteriorates due to clogging of pores and flow rate of well diminishes. Productive seam is subjected to depression simultaneously with worm-up. Paraffins, resins, asphaltites wormed up to fluidity by high-frequency induction heater go from face zone to well thanks to depression. They are washed out through pump and compressor pipe lowered beforehand. Warm-up is conducted with reduced level of fluid. Penetration of face zone rises, flow rate of well grows. EFFECT: technique is especially efficient in fields with viscous oils carrying paraffins, resins and asphaltites.