| 摘要 |
FIELD: methods or apparatus for cleaning boreholes or wells, particularly equipment for metered supply reagents into wells. ^ SUBSTANCE: device has reagent container with partition, metering unit with valve activated under formation liquid pressure drop during pump operation and composite mixer. Composite mixer is made as a chamber with X-shaped partitions and constant magnets arranged on surface from wetted side thereof. ^ EFFECT: increased efficiency of reagent usage, increased overhaul life and reduced costs. ^ 4 cl, 2 dwg |
