Thursday 15 March 2007
ENVIRONMENTAL CRACKING PERFORMANCE OF CORROSION RESISTANT ALLOYS FOR THE TYRIHANS FIELD EXPANDABLE LINER
R. Morana, Matthew Tabinor*, Perry Ian Nice**, Kjell Bersås**,
A. Bufalini, L. Scoppio***, G. Mortali, Bill Bailey****
(*) Baker Oil Tools, 9100 Emott Rd, Houston, Texas, 77040, USA,
(**) Statoil ASA, 4035 Stavanger, Norway,
(***) Centro Sviluppo Materiali SpA, Via di Castel Romano 100, 00128 Rome, Italy now at Pipeteam srl via Resistenza 2, 20070 Vizzolo P. (Mi), Italy,
(****) Baker Oil Tools, PO Box 3048, Houston, Texas, 77253-3048, USA
Referee: M. Barteri
Paper presented to: NACE CORROSION 2007
Nashville, 15 March 2007
The high temperature Tyrihans field required an expandable liner for dual lateral production wells. Two different alloys (an austenitic and a super austenitic) were selected for evaluation via expansion trials and environmental cracking tests in simulated Tyrihans well completion brine and reservoir fluid. Testing of the post-expanded alloys was conducted in these high chloride-containing environments, with and without CO2/H2S. The results proved the suitability of all alloys through expansion trials, but one of the alloys failed the environmental cracking test program.
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