Anticorrosion lab evaluation
Here there are only some of the lab tests and results shown, the attached copies of original evaluation reports will provide more details, MPS coating technology has achieved the top level in corrosion protection area or even outdone partially.
Evaluation of MPS against H2S, CO2, Cl- under HTHP
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Date: 2004.9.22-2004.9.27
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Index: 200502-538
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Equipment: 6129, 35Mpa autoclave by Cortest Co.
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Corrosion Media: Tarim field formation fluid reproduced
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Solution Feature: 1.0MPaCO2, 150000mg/1Cl-, PH 5.0, 31Mpapressure, 140℃ temperature, 0.02MPa H2S, Time 120h
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Samples: MPS, TK236, DPC
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Results: The color of MPS has not changed, no bubbles, no under metal corrosion, slight adhesion loss by V type adhesion check; TK236 has performed similarly and slightly loses adhesion by V type adhesion check , DPC has bubbled and medium loss its adhesion by V type adhesion check |
Evaluation of MPS against H2S, CO2, Cl- under HTHP
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Date: 2005.5.26-2005.6.2
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Index:200502-628
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Equipment: 6129, 35Mpa autoclave by Cortest Co.
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Corrosion Media: Luojiazai field formation fluid reproduced
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Solution Feature: 3.2MPaCO2, 32Mpa pressure, 100℃ temperature, 6.5MPa H2S，Time212h |
Samples: MPS, TK236, TK216, 67mmX21mmX5.5mmX8,slightlyarc
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Results: The color of MPS has not changed, no bubbles, no under metal corrosion, slight adhesion loss by V type adhesion check; TK236 has performed similarly and slightly loses adhesion by V type adhesion check, TK216 has bubbled and medium loss its adhesion by V type adhesion check
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Anticorrosion lab evaluationIn order to evaluate if MPS coating can work properly under acid and alkali operation, MPS coating samples are taken to State key lab of SWPI to have been tested, upper table shows the MPS samples had performed very well under high PH drill fluid, there is no corrosion occurred or adhesion damaged by high PH solution. The lower table shows that MPS has performed well too under low PH value, this test simulates acidification operation.
Evaluation of MPS against high PH alkali environment
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Samples: 2 7/8” Tubing ring
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Inspection: State Key Lab of SWPI
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Equipment: 35Mpa autoclave by Cortest Co.
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Environment: Simulated drill mud with MW2.0kg/cm3
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Solution Feature: PH10, 100Mpa pressure, 120℃ temperature, Time 48h
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Results: The color of MPS has not changed, no bubbles, no under metal corrosion, no adhesion loss by V type adhesion check
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Evaluation of MPS against low PH acid environment
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Samples: 2 7/8” Tubing ring
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Inspection: State Key Lab of SWPI
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Equipment: 35Mpa autoclave by Cortest Co.
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Environment: Simulated acidification operation
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Solution Feature: 20%HC1, 5Mpapressure, 80℃ temperature, Timel20h
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Results: The color of MPS has not changed, no bubbles, no under metal corrosion, no adhesion loss by V type adhesion check |
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