HORIZONTAL WELL COMPLETION DEVICE Russian patent published in 2015 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: device includes a pipe string provided with filters and packers on the outside, made in the form of plasters installed considering length of zones with the corresponding permeability. One of the ends of the packers is rigidly fixed on the pipe string, and the other one has a possibility of being moved along the pipe string and is connected to a protective perforated casing installed on the outside of the filter so that it shuts off its holes and can align holes of the filter and the casing due to displacement of the casing at straightening of the plasters under action of liquid pressure. Plasters are sealed on the outside and interconnected from inside with the pipe string through a check valve installed on the interconnecting hole. When the device is being lowered, the lower filter remains open, and after it is fixed in a production casing, it is closed and plasters are straightened and fixed in the well by creation of liquid pressure. Check valves are made so that straightening of plasters is excluded at lowering of the device with flushing.

EFFECT: enlarging technological capabilities; preventing contamination and disturbance of integrity of filters.

2 dwg