INDIVIDUAL OIL RESERVOIRS PRODUCTION RATE CONTINUOUS CONTROL METHOD DURING MULTI ZONE PRODUCTION Russian patent published in 2010 - IPC E21B47/10 

FIELD: oil-and-gas industry.

SUBSTANCE: invention related to oil industry, particularly to individual oil reservoir continuous control method during multi zone production. The individual oil reservoir continuous control method during well multi zone production, equipped with a centrifugal pump, a lubricator, perforation holes and tubing string, includes a hydrophone descending until oil reservoirs level, via lubricator on a cable, which connected to recording system. To measure acoustic wave amplitude-frequency spectra with the connected to the recording system hydrophone, those waves generated by turbulent flows of oil-water emulsions, flowing from individual oil reservoirs though the perforation holes into the production well. Execute the centrifugal pump descending into the well on the tubing string with quarter-wave resonators. Dislocate at least one quarter-wave resonator inside the tubing string over the centrifugal pump. Execute oil production rate control from several oil reservoirs according to acoustic wave amplitude-frequency spectra, generated by turbulent flows of oil-water emulsions, flowing from individual oil reservoirs though the perforation holes into the production well. At that quarter-wave resonators, located inside the tubing string, decrease all harmonics amplitudes in the defined channel of the acoustic wave amplitude-frequency spectra, generated by centrifugal pump operation wheels blades.

EFFECT: oil production and well operation optimisation, providing single lift product separate recording during multi zone production.

8 dwg, 1 ex