METHOD OF WELL RESEARCH Russian patent published in 2002 - IPC

FIELD: operation of oil wells, particularly, producing well logging. SUBSTANCE: method includes lowering of thermometer logging cable into well with electric heater fastened to logging cable above thermometer, uniform heating of entire length of well in the course of lifting and simultaneous recording of thermogram over wellbore. Lowering if thermometer with heater is performed inside tubing with airtight shoe preliminarily lowered 3-5 m below filter interval with jet pump secured to tubing 5-10 m above perforation interval. Injected into tubing is working fluid and pumped out of interpipe space is mixture of working and recovered fluids. Thermogram is recorded within interval of perforation and profile of fluid inflow to wellbore is determined within said perforation interval. EFFECT: higher efficiency of research method due to determination of well inflow profile by method of artificial thermic field. 1 dwg