TPT March 2007

I nspection, M easuring, T esting & M arking

Tube preparation in perfect time:

Hydrostatic testing units for oilfield and pipeyard applications

Gardner Denver Water Jetting Systems, USA, manufactures continuous duty hydrostatic testing units, specifically for oilfield and pipeyard pipe testing at pressures up to 20,000psi. The company produces both diesel and electric units, which are designed for portability, and may be trailer or skid mounted. The units feature an exclusive ‘Pressure-Trol’ system, which allows the operator to regulate testing pressure and bleed-down with two centrally mounted levers, without having to ‘clutch’ the engine or shutdown the electric motor. All engine gauges and start/stop controls are located on centralised control consoles. Only one operator is necessary to conduct a complete hydrostatic evaluation, to test the strength and integrity of drill, production, and casing pipe. The electric and diesel units both use the Partek Triplex Pump, which consists of components fabricated from precipitation hardened stainless steel to maximise

corrosion resistance. Pump valve and valve seats are field replaceable in 30 minutes, using ordinary hand tools. Advantages include high testing rates, continuous duty, elimination of motor and pump interruption, and 20,000psi working pressure. Every component of Gardner Denver hydrostatic testing units is designed with a specific benefit in mind. The 100 HP T-300 pump includes a power end that transmits power from the pump driver (either diesel or electric) to the fluid end. Two standard fluid › A close-up of the patented ‘Pressure-Trol’ valve, which eliminates the need to stop and restart the unit for each test, which minimises productivity ends are offered – the standard ‘L’ for pressures from 8,000 to 15,000psi, and the inline (T-300H) for pressures from 15,000 to 20,000psi. All of Partek’s fluid ends are environmentally safe and share several features including suction manifolds (from aircraft grade aluminium), standard ‘L’ style fluid cylinders, and inline style stuffing boxes and valve seats (autofrettaged to provide maximum strength and reliability). The fluid end is characterized by minimal internal clearances to ensure highest possible volumetric efficiency. Plungers are collet style for positive alignment and rapid removal. With thousands in service, the ‘L’ fluid end for 15,000psi has a simple design that features easy removal of valves, plungers and packing.

Tube bending

Tube end-forming

Complete solutions for automation

fi (Below) an electric HT-120ES-001 electric hydrostatic tester; and (bottom) a skid-mounted HT-610ES electric hydrostatic testing unit featuring V-belt drive, Pressure-Trol, control panel, and charge pump. The compact design of this unit makes it practical and popular in pipeyards

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Plungers are colmonoy coated stainless steel, a material that is unaffected by thermal shock.

Maschinenbau GmbH Hünegräben 22 D-57392 Schmallenberg Tel +49 (0) 29 72 - 97 15 - 0

sales@transfluid.de www.transfluid.de

With inline operation from 15,000 to 22,000psi, the Partek

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