WAG is an effective method to enhance oil recovery. However, widespread use of WAG in our environment is difficult to provide with known technologies. Therefore, the creation of an effective, reliable and easy to maintain equipment and technology for the preparation and injection water-gas mixture into the injection wells is an urgent problem for Russian oil production. Good prospects in its decision has WAG with using of pump-ejecting systems which allow to prepare in the surface the water-gas mixture and inject it into the reservoir in a wide range of flow rates and pressures by equipment, which can be successfully used in field conditions.
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