| 摘要 |
FIELD: oil and gas. ^ SUBSTANCE: present invention relates to the oil industry, namely to methods for cleaning near wellbore region of oil reservoir. The method involves the injection of water-gas mix into the injection well, in the total amount of no less than the sum of the total internal volume of the tubing run into the bottom hole, the internal volume of the production casing between the tubing shoe and the lower perforated formation bottom, and the perforated formation volume taking into account its porosity in the spill radius. After that, liquid is spilled and contaminations and gas removed from near wellbore region of reservoir are disposed of. ^ EFFECT: increased cleaning efficiency and cost savings. ^ 2 cl, 1 ex |
