FIELD: technology for processing underground formations.
SUBSTANCE: well system contains equipment for completion, positioned in borehole of well for forcing extracted liquid substance, a system of pipes, connected to completion equipment, bypass device, connected to system of pipes for moving liquid for processing well bypassing completion equipment, and draining valve. The latter is positioned with possible interaction with system of pipes and bypass device for selectively guiding stream of liquid for processing well through system of pipes to bypass device or stream of extracted liquid from completion equipment through system of pipes. In accordance to method, draining valve is positioned in system of pipes for feeding liquid substance. Channel for passage of processing liquid is connected to system of pipes. Draining valve is used for blocking stream in system of pipes while simultaneously providing for passage of stream through the channel for passage of processing liquid. System for forcing liquid substance in well borehole with equipment for completion, mounted in well borehole on system of pipes, contains draining valve, controlled for providing possible passage of stream of extracted liquid substance through system of pipes, and bypass channel, letting liquid substance into draining valve for isolation of completion equipment from well processing liquid injected through draining valve.
EFFECT: increased efficiency when processing underground formations.
3 cl, 5 dwg
