LUBRICATOR Russian patent published in 2002 - IPC

FIELD: deep examination of wells. SUBSTANCE: invention deals with various operations related to liquidation of asphalt-resinous and paraffin-hydrate deposits. Lubricator has body centering mount in the form of ball rotary cock located in lower base and branch pipes to feed and discharge fluid. Separable gland head has lid made in the form of float valve to relieve gas. Sealing element of gland separable head is coupled to mechanism of its pressing. Vertical fork with guiding roller is attached to body. Flow section of ball cock secures passage of instruments. Float valve is formed by plane of cover with hole and double-layer float in chamber. Upper layer of float is made of rubber, lower layer is produced from low-density material. EFFECT: multifunctional capabilities, small dimensions and simplicity of engineering approach. 1 cl, 2 dwg