FIELD: oil and gas industry.
SUBSTANCE: assembly is proposed configured to be located in a well at the intersection of the mother wellbore and the sidetrack of the wellbore. The assembly a joint having a main wellbore branch and a side branch, and also a channel in the branch of the main wellbore, arranged with the possibility to receive fluid medium. The opening in the main wellbore branch is hydraulically connected to the channel so that the medium flowing in the channel forms suction in the opening for drawing debris in the well through the opening in the channel. The debris are received by the chamber located in the joint and hydraulically connected to the channel. The method of completion of well includes placing of joint having branch of the main wellbore and side branch in well, placement of deflector of completion in the main wellbore, flow of fluid medium through the channel to create suction in the collecting opening, collection of debris from the well through the collecting opening, lowering the main wellbore branch into the finishing deflector after collecting debris from the deflection surface.
EFFECT: increased efficiency of wellbore cleaning.
18 cl, 19 dwg
