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Home : Technical
Resources : Test Reports
DUOLINE is a well established
product having been used successfully in numerous countries in
any
and all oil field conditions, and as such, quality and safety trials
have been conducted on the full product range. We value the results
as part of the fundamental support of the quality and integrity
of our business. Please click on any one of the titles to view
the
article summary.
The testing summaries below illustrate a cross sampling of in-house
as well as customer funded testing that demonstrate DUOLINE’s
ability to perform in extreme conditions typically encountered by
oilfield tubulars.
DUOLINE 20 - LONG TERM EXPOSURE, 250°F,
3000 psi
DUOLINE TECHNOLOGY, GREAT BEND, KANSAS, 1992
DUOLINE 20 was successfully tested in the following test:
Two 2-3/8" J-55 EUE 8-round tubing nipples were internally
lined with DUOLINE 20 and screwed together with a threaded
coupling. Threaded end caps were installed to create a pressure
vessel, which was filled 50% with a mixture of saltwater and
crude oil. The remaining volume was filled with a gas mix
of 5% CO2 and Nitrogen. The DUOLINE 20 assembly was heated
to 250°F (121°C) and internal pressure elevated to
3000 psi and placed upon a rocker arm which rotates the assembly
at a plus and minus from horizontal position. After 2 weeks,
the sample was depressurized at 100 psi/minute, then re-filled
with the gas mixture. The assembly was maintained an additional
2 weeks at 250°F (121°C) and internal pressure of
3000 psi. Finally the sample was depressurized at 100 psi/minute,
and taken apart for examinations. The liner condition was
excellent.
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