METHOD FOR CONSTRUCTION AND COMPLETION OF FORCE WELLS Russian patent published in 2007 - IPC E21B43/08 E21B43/16 

FIELD: technology for drilling and completing wells.

SUBSTANCE: in accordance to first variant, well is drilled through force zone in accommodating rock. Casing pipe is lowered into well borehole, provided with extending device, having moveable section with filtering material on its distal end and immoveable section. Extending device is positioned near section of rock in forcing zone. Moveable section of extending device is extended and put in contact with surface of aforementioned rock section, with forming of a channel between internal space of casing pipe and this section. Liquid substances are forced through formed channel into force zone. Filtering material at distal end of extending device prevents crumbling of accommodating rock into well from forcing zone. In accordance to second variant well is drilled with usage of common drill mud to point, located above planned forcing zone in accommodating rock. Then, common one is replaced with drill mud for opening the bed. Well drilling is finished through forcing zone. Casing pipe is lowered into well, equipped with extending device, having moveable section with filtering material on its distal end and immoveable section. Extending device is positioned near to section of rock in forcing zone. Extending part of extending device is extended and put in contact with rock, with forming of channel between internal space of casing pipe and rock. Through formed channel, liquids are forced into rock. Well equipment system for forcing liquids includes well shaft, casing pipe lowered into well borehole, provided with extending device, having moveable part with filtering material at its distal end and immoveable section, positioned near to section of rock in forcing zone and extended to reach contact with surface of this section with forming of channel, passing from internal space of casing pipe to forcing zone. System also includes forcing equipment and a system of pipelines; and also system for feeding forced liquid substance through casing pipe and formed channel into rock.

EFFECT: increased well completion reliability.

3 cl, 9 dwg