DEVICE FOR FILTER LOWERING IN HORIZONTAL WELL Russian patent published in 2016 - IPC E21B43/10 

FIELD: construction; mining.

SUBSTANCE: invention relates to construction of wells, in particular, to finishing wells by drilling, namely to devices for filter lowering into a horizontal well. Device for filter lowering into a horizontal well includes a hollow housing and a guide head connected with its lower part with a hinge, in cavities of outer surface at an angle to longitudinal axis there are rollers arranged along screw line. Housing is made in the form of a coupling with a rotatable eccentric cylinder with centering working elements which form a self-centering coupling. Guide head is made as a hollow cylinder with threaded end, and is equipped with a tip with central and side flushing ports, as well as with the thread reciprocal to the guide head thread. Hinge body has a central channel interconnected on one side with cavity of the coupling, and on the other side with the cavity in the guide head.

EFFECT: provision of trouble-free filter lowering and bringing to a certain interval.

4 cl, 3 dwg