Hydraulic internal pipe cutters Type TVG


APPLICATION

The Internal Pipe Cutters are designed for cutting tubing and retrieving them during workover operations. 

 

CONSTRUCTION

The Internal Cutters consist of a bull nose nut, a body; three knives mounted into longitudinal slots of the body; the taper unit supplying cutters moving by piston; piston spring for initial fixing the taper unit; four dies moving on grooves of taper sleeve; die holder; die holder spring fixing dies in transport position during lowering the pipe cutter into the well; shaft for transferring torque on the pipe cutter body. The ball valve places in to the bottom part for covering the washing hole. The process of covering is carried out due to ball drawing in to the fishing string. Differential pressure moves the die holder down what anchors the pipe cutter in to the string. During further pressure increasing the piston with wedges move up preparing knives to work. When the process of cutting stops the operator increases pressure and pin placed in to the valve is cut; the valve moves down releasing pressure. The fishing string is caught during lifting the pipe cutter due to jamming dies between taper sleeve and internal pipe surface.

 

When ordering, please specify

Assembly name and nominal size;

Version (LH or RH);

Type of connecting thread if other than stated in the table;

 

It is recommended to order

Knife                   - 9 pcs.   (3 sets);

Pin axis              - 9 pcs.   (3 sets);

Knives spring   - 9 pcs.   (3 sets);

Die                      - 12 pcs.   (3 sets);

Shear pin           - 5 pcs.;

Ball                      - 2 pcs.;



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