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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, 200°F,
7500 psi
DUOLINE TECHNOLOGY, ODESSA, TEXAS, 1997
DUOLINE 20 was again tested in a procedure similar to that
described above. The tubing nipples were 3-1/2" OD L-80
threaded with Nippon Steel’s NS-CT-FGL premium connection,
which features a positive torque shoulder, metal-to-metal
seal and a PTFE corrosion barrier ring. In this test the internal
volume was filled 50% with kerosene and 50% with a gas mixture
(5% CO2, balance Methane). The DUOLINE assembly was maintained
at 200°F (93°C) for 14 days at 7500 psi. During the
exposure there were 5 pressure cycles from 7500 psi to ambient
at 150 psi/minute. The liner condition after this exposure
was excellent.
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