UDT Conventional
Mandrels
These mandrels include an integral orienting sleeve that aligns the kick over tool and flow control device with the pocket for precise installation in straight and deviated wellbores.
UDT Conventional Mandrels
UDT conventional gas lift mandrels are equipped with external lugs to receive tubing-retrievable gas lift and orifice valve. External guards are attached to the outside diameter of the mandrels, surrounding the valves and providing protection during tubing running and pulling operations. These mandrels are available in all grades ranging from N-80 (type 1 & Q), L-80 (type 1, 9Cr, 13Cr) & P110 suitable for both the standard and sour services. Tubing pupjoints and Tubing couplings used to manufacture conventional mandrels are procured from mills having valid API 5CT license.
Operations
Conventional mandrels are an integral part of the tubing string. They are used to house the gas lift valves and other valves. Injection gas enters the valve and acts on the effective bellow area. As the injection gas pressure overcomes the precharged pressure, the bellow compresses and lifts the stem tip off the seat. Injection gas then flows through the seat, past the reverse flow check valve, and into the production tubing.
Special Features
- Field proven design and operation.
- Tool guard and external ported lug protects flow control devices from damage.
- Full traceability through the manufacturing process and 100% dimensional inspection is performed.
- Welding of lug with tubing pupjoint qualifies to ASME Section IX standard with quality control including liquid penetrant testing & ultrasonic testing.
- QA inspection includes weld visual inspection, Hardness testing, internal and external pressure testing and drift testing.
- These mandrels are available in a variety of thread connections like EU and /or premium thread configurations as required by customers.
Key features of all UDT Swift Connectors
Self-aligned & no cross threading
Strength characteristics higher than casing pipe.
Make-up in 4 turn from stab to full make up
4 turn rotation make-up prevents connector back-off
Suitable for piling/jetting.
Visual indication of make-up
Low torque make-up with rig tongs.
Preloaded for fatigues.
High-pressure sealing.
Reversible and reusable
ENGINEERING DATA FOR UDT CONVENTIONAL MANDRELS
