Production
Description
Hydraulic Power Tong GKSH-7200 Yaktash is designed to handle a range of pipe sizes from ∅102 mm (4 ") to ∅340 mm (13 3/8"). According to GOST 15150-69 climatic version is UKHL1. Designed for moderately cold climate with ambient temperatures -45 to 50 °C.
Features
This Hydraulic Power Tong is the next step in the development of the GKSH 4000M model. To provide tong performance with higher torque, the main bearing elements (gears, support rollers, etc.) were reinforced. The weight of the tong is no more than 800 kg, and with a hydraulic backup 1250 kg.
Two-section hydraulic motor and a manual gearbox allow obtaining four different torque ranges under the same working fluid pressures from 0 to 200 bars. The tong is easy to adapt for lowering the casing with little torque or breaking out of firmly tightened drill pipes.
The coverage by the jaws along the entire circumference reduces tubular damage to thin-walled pipes.
The design of the hydromechanical backup tong is a unique development of OOO Ufagidromash and has a number of innovative solutions:
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Allows the use of the same jaws for both the master tong and the backup tong;
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Suspension of the backup tong allows it to be quickly disconnected from the master tong;
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A brake valve is installed in the raising / lowering cylinder line instead of the hydraulic lock. At the time of possible slippage of the pipe string in the wedge grips of the spider, an additional axial load impacts on the suspension system (suspension roller and rope) in addition to the tong weight. Under the influence of this additional load, the brake valve drains the working fluid from the cylinder cavity into return line and the cylinder rod extends, thus eliminating the excess above the permissible load on the suspension.
It is especially important to note the way the master tong is attached to the backup tong. Two-point equidistant (from the center of the pipe) attachment with a balancing torsion eliminates the impact of radial forces on the thread. This arrangement allows the pipes to be screwed with a "clean" torque without appearance of additional friction in the threaded joint.
Specifications
| Parameters | Value |
|
Hydraulic system flow, m3/sec (l/min) minimal nominal maximal |
10,0×10-4 (60) 25,0x10-4 (150) 33,3x10-4 (200) |
|
Hydraulic system pressure, MPa (kgf/cm2) nominal maximal |
10 (100) 20 (200) |
| Drain line pressure, MPa (kgf/cm2) | not more than 0,5 (5) |
|
RPM at nominal flow, sec-1 (rpm) 1st gear 2nd gear 3rd gear 4th gear |
0,08 (5) 0,17 (10) 0,51 (30) 1,02 (61) |
|
Torque at nominal pressure, Nm (kgf·m) 1st gear 2nd gear 3rd gear 4th gear |
35280 (3600) 12500 (1275) 5880 (600) 2080 (210) |
|
Torque at maximal pressure, Nm (kgf·m) 1st gear 2nd gear 3rd gear 4th gear |
70560 (7200) 25000 (2550) 11760 (1200) 4160 (420) |
|
Weight, kg without backup with backup |
810 max 1800 max |
|
Dimensions, mm without backup with backup |
1550х1060х950 1640х1330х1760 |
| Purity of working fluid, GOST17216 | not worse than Class 13. |
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Production
Hydraulic Power Tongs
GKSh-16500 GKSh-12000 GKSH-8000MS GKSh-7200 GKSh-7300B GKSh-5000GZ GKSh-5000 GKSh-4200 GKSh-4000M GKSh-4000GZ GKSh-4000 GKSh-3200 GKSh-2000H GKSh-1800 GKSh-1600MK GKSh-1600MT GKSh-1500MK GKSh-1500MT GKSh-1200MK GKSh-1200MT GKSh-400UM GKSh-300
Spiders
Spiders of SPG series are designed to grip a range of drilling strings and tubing sizes in drilling and well servicing. Manufactured for various load ratings.
Hydraulic Power Unit
HPU provides transformation of electric energy to pressurized flow.
Bridge Plugs
Bridge Plugs of STA series are designed to provide tight separation of cased hole intervals.