It is used for seriously eccentric wear well, highly-deflected well, heavy oil well, horizontal wellwell with complex conditions. It’s a new rodless oil production system without pumping unit or sucker rod.

It is used for wells with “low level, low liquid, low pump effective” to prevent leakingprotect layer during hot washing.

It is mainly applied to oil-water well with different problems, such as scrapped caused by casing corrosionperforation, pipeline corrosionperforation, equipment which is changedscrapped frequently because of corrosion, working cycle is shortened because o

It mainly consists of oil pump extracting oil simultaneouslylayers, packer with self-lock compensation, pipe centralizerlifting shorts.

Vacuum return sand pumping Kerui developed by Kerui2002. After several years of field applicationimprovement, it can be meet technological requirements of all kinds of oil/water well sand pumping, Max pumping sand deepth can reach hundreds of meters.

It is an advanced technology used for oil-water well plugging relief, productioninjection increase of high water contentlow permeability oilfield.

Technology of increasing productioninjection

This technology is mainly used for negative pressure plugging reliefnegative pressure discharging acid.