FIELD: oil and gas production.
SUBSTANCE: system of pumping underground water into oil reservoir consists of water intake and pressure wells communicated with water ducts, of immersed pumps arranged in water intake wells, and of pressure wells. The pressure wells are united into a group of wells and operate under similar delivery pressure from separate water intake wells. At least one water intake well in group of wells with least pressure is equipped with a frequency controlled drive (FCD). Also, water ducts of other groups of wells are connected by means of corresponding bridges of controlled hydraulic resistance with the water duct of this group of wells with FCD for re-distribution of total volume of intake by means of these FCD at shutdown of one or more pressure wells in any of groups of wells.
EFFECT: raised efficiency of pumping underground water into oil reservoir due to upgraded control and flexibility of system at change of process conditions.
3 dwg
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