AUTOMATIC WELLS DEPARAFFINATION Russian patent published in 2018 - IPC E21B37/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the petroleum industry and can be used to remove asphalt-tar-paraffin deposits from the producing string inner surface. Mechanism contains an electric drive consisting of an electric motor and a reducer. Electric motor shaft is connected to the reducer input shaft by means of a replaceable gear train, which allows changing of the producing string cleaning modes. Scraper wire winding drum is fixed on the output shaft of the reducer. Electric drive is fixed on the platform at the upper end of the post. With its lower end post is rigidly, detachable and rotational connected to the lubricator tube by a fastening unit. Post position clamp is made in the form of a detachable joint, ensures the immutability of its spatial position in the attachment point relative to the lubricator axis. L-shaped adjusting grooves are made in the pad for the electric drive fastening. This allows to adjust the drum position relative to the lubricator axis in case of its replacement.

EFFECT: ensuring versatility while increasing the rigidity of the structure and increasing the stability of the work.

2 cl, 5 dwg