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. 
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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

The Internal Hydraulic Pipe Cutter TVG is designed to cut elements of drilling strings and oil-well tubings during repair and recovery works in the well.

Design

First of all it is necessary to assemble the downhole motor and Internal Pipe Cutter. Set the hydraulic tubing anchor above the motor. It fixes body during operation and eliminates axial throw and turn under influence of counter torque.
It is forbidden to provide pressure at the downstream line while lowering the Pipe Cutter. It may lead to premature moving-out of cutters.
When Pipe Cutter reaches required depth, fix the weight of string via weight indicator. Create circulation with required working pressure. At the same time under influence of excess pressure slips of anchor are pressed to the well wall. The Pipe Cutter starts its operation.
Сirculation of drilling fluid through annular space between casing and tubing signalizes that the pipe was cut.
After finishing operations stop pressure feed in downstream line. As a result Pipe Cutter and hydraulic anchor come back to transport position. 
Images and Dimensions
Technical data
To cart Code D of cut pipes,
in
Body OD,
in
Operating pressure,
psi
Connection,
API
TVG-73 2-7/8 2.24 74-294 NC 16
TVG-89 3-1/2 2.75 74-294 NC 16
TVG-102 4.0 3.15 74-294 AMMT-1.5
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