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51316-7126-Qualification of Super 13Cr-110 in HPHT Sour Well Service with Concentrated Brines

Picture for Qualification of Super 13Cr-110 in HPHT Sour Well Service with Concentrated Brines
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A corrosion cracking assessment evaluated a 13Cr-5Ni-2Mo 110 ksi grade martensitic stainless steel as a potential well tubing material for oil and gas production from Gulf of Mexico reservoirs. Also, Stress Corrosion Cracking at low H2S/low temp/high acidity (pH<3.5) was tested by  Cyclic Slow Strain Rate. 

Product Number: 51316-7126-SG
ISBN: 7126 2016 CP
Author: Fengmei Song
Publication Date: 2016
Industries: Test Method , Materials Selection and Design
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$20.00
$20.00

A fitness for purpose corrosion cracking assessment was performed to evaluate the suitability of a 13Cr-5Ni-2Mo 110 ksi grade martensitic stainless steel as a potential well tubing material for oil and gas production from Gulf of Mexico reservoirs. Conditions were chosen to reflect those expected in producer wells including the possible presence of H2S as a result of reservoir souring due to seawater flooding. A detailed analysis of existing martensitic stainless steel test data for SSC and SCC revealed the need for a qualification test program to fully cover the conditions identified.Both static (Creviced C-ring) and dynamic Cyclic Slow Strain Rate (CSSR) testing for assessing SCC resistance were undertaken in concentrated brine at 200°F (93°C). In addition SSC at low H2S and low temperature with high acidity (pH<3.5) was tested employing CSSR. The test program and the results obtained are detailed and compared against existing data thereby further defining the safe operating envelop for SCC and SSC of 13Cr-5Ni-2Mo 110 ksi grade martensitic stainless steels in additional environments that are outside of current experience.

Key words: downloadable, 13Cr, C-ring test, SCC, SSC,cyclic slow strain rate, sour service

A fitness for purpose corrosion cracking assessment was performed to evaluate the suitability of a 13Cr-5Ni-2Mo 110 ksi grade martensitic stainless steel as a potential well tubing material for oil and gas production from Gulf of Mexico reservoirs. Conditions were chosen to reflect those expected in producer wells including the possible presence of H2S as a result of reservoir souring due to seawater flooding. A detailed analysis of existing martensitic stainless steel test data for SSC and SCC revealed the need for a qualification test program to fully cover the conditions identified.Both static (Creviced C-ring) and dynamic Cyclic Slow Strain Rate (CSSR) testing for assessing SCC resistance were undertaken in concentrated brine at 200°F (93°C). In addition SSC at low H2S and low temperature with high acidity (pH<3.5) was tested employing CSSR. The test program and the results obtained are detailed and compared against existing data thereby further defining the safe operating envelop for SCC and SSC of 13Cr-5Ni-2Mo 110 ksi grade martensitic stainless steels in additional environments that are outside of current experience.

Key words: downloadable, 13Cr, C-ring test, SCC, SSC,cyclic slow strain rate, sour service

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Picture for Sour Service Performance of EPR - 110ksi Grade Material
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51316-7119-Sour Service Performance of EPR - 110ksi Grade Material

Product Number: 51316-7119-SG
ISBN: 7119 2016 CP
Author: Thodla Ramgopal
Publication Date: 2016
$20.00

Sour service behavior of a 110ksi material was investigated in a range of production environments. Slow strain rate tests were performed at a strain rate of 510-7/s, in sweet as well as in sour production environments. The strain to failure in sweet environments is lower than the in-air values and is substantially lower in the presence of H2S.

 

 
Picture for Flow Accelerated Corrosion of Carbon Steel Pipe Carrying Hot Condensate Water in a Chemical Plant
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51316-7127-Flow Accelerated Corrosion of Carbon Steel Pipe Carrying Hot Condensate Water in a Chemical Plant

Product Number: 51316-7127-SG
ISBN: 7127 2016 CP
Author: Fengmei Song
Publication Date: 2016
$20.00

Multiple leaks occurred with a carbon steel pipe carrying hot condensate water (300F and 140 psi).  A root cause analysis was performed, including visual and metallographic examination of two failed samples chemical, analysis of weld metal and base metal and chemical analysis of water samples.  Results show that flow accelerated corrosion (FAC) was the responsible mechanism leading to the failures.
Picture for Relation Between Localized Corrosion And SCC In Nickel Based Alloys In HP/HT Oil And Gas Environment
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51316-7113-Relation Between Localized Corrosion And SCC In Nickel Based Alloys In HP/HT Oil And Gas Environments

Product Number: 51316-7113-SG
ISBN: 7113 2016 CP
Author: Thodla Ramgopal
Publication Date: 2016
$20.00

Fatigue and fracture performance of UNS N07718 (718) and UNS N07716 (625+) in sour environments over a range of temperatures (300 to 400°F) and chloride concentrations (0.15wt% to 25wt% NaCl). Rising displacement fracture toughness test performed in a range of environments.

 
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