Tools for sidetracking. Fishing, milling and cleaning equipment. Tools for coiled tubing units. 

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“BITTEKHNIKA” LLC was founded in 1996. Through all these years of successful experience we have developed a sustainable manufacturing system of oilfield equipment. 
3 November 2023
Exhibitor of 2023 ADIPEC
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Address: 395 Ya, Shosse Kosmonavtov Str., Perm, Russia, 614065
Phone: +7 (342) 27-000-27, 294-64-64
E-mail:
info@bittekhnika.rusales@bittekhnika.ru,  pr@bittekhnika.ru

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Application

TVG-U wide-range hydraulic internal cutter is designed to cut and retrieve tubing during well interventions. 

Design

The cutter consists of a crossover to connect the cutter to motor shaft, body with insert knives, a mandrel, a spring, a retainer ring, a centralizer sleeve, a mandrel extension, a centralizer drag spring, a sub, an o-ring and a jet. 
Rotation of the cutter and concurrent pressure differential in the chamber force the mandrel to drive knives outwards from the body slots. The spring and retainer ring enable smooth and uniform feed to the knives. 
When tubing has been severed and pressure has dropped, the piston goes back to its initial position, retracting knives inwards the body slots. Installed at the bottom, the centarlizer diminishes play of the cutter during its operation.The centralizer consists of three drag springs attached with screws. While running-in, the drag springs push against the walls acting as a plain bearing.

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