| 摘要 |
The variable flow rate installation for pumping water, including a column of casing pipes lowered into a boring-hole, and ended with a Christmas tree on the surface and connected with a system of hydraulic feed, and ended with a filter at the height of the reservoir rock absorptive, and a column of delivery pipes seated in the column of casing pipes and sealed in its lower part with a packer, consisting in that in the packer (7) and in parallel to the column of delivery pipes (6), a pipe length (8) is seated with a check valve (9) located preferably close to the roof (10) of the absorptive layer.<IMAGE>
|
