FIELD: oil and gas industry.
SUBSTANCE: method includes running-in at the flow string of an electric-centrifugal pump and a liner of tubing with the perforated lower part, isolation of liquid flow in tubular annulus by a packer installed at the liner and regulation of flow direction in order to distribute it through the inner cavity of the flow string and tubular annulus. According to the invention before running-in a return valve is installed at the liner end and the flow string is perforated in the area of the well head. Perforated holes are made in the flow string in the area of the well head. These perforated holes are 1.5-2 times bigger than the perforated holes in the lower part of the liner.
EFFECT: improvement of the method.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2188934C2 |
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|
RU2195547C2 |
