reports
Home Reports CRA Evaluations

CRA Evaluations

Corrosion Resistant Alloys (CRA) are used in severe corrosive environments where longer life and reliability are needed. In severe environments where carbon steel will not provide the desired service life or when chemical costs are very high, CRA provide a good alternative. These materials with varying alloying content (Chrome, Nickel, Stainless Steels, Molybdenum, Copper) provide better material resistance. However, some CRA are prone to cracking in certain environments and this section presents reports targeted towards evaluation of CRA in various corrosive environments.


 
Select Report to read more
 
 
Evaluation of Corrosion Resistant Alloys for Determining Resistance to Corrosion and Cracking
Two autoclave exposure tests were conducted simulating wellhead shut-in and bottom hole Thamama gas conditions. Based on these tests, all materials evaluated up to 42 percent nickel (13Cr, 22Cr, 28Cr, Alloy 825 and Alloy 925), exhibited excessive general corrosion pitting, crevice corrosion and/or stress corrosion cracking. It is recommended that materials with nominally 50 percent nickel such as Hastelloy Alloy G, 2550 and NIC 52 be considered for downhole Thamama gas service.
 
Read more
        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
--
Material Selection for Injection Well
Four corrosion resistant alloys (G, 28, 2205, 825) were evaluated to determine their resistance to corrosion, pitting and stress corrosion cracking. Evaluations consisted of exposing test specimens to a simulated service environment and to a simulated acidizing environment. In the acidizing experiment, alloy G, 825 and 28 gave acceptable performance with alloy G having the best resistance to corrosion and cracking. In the simulated service environment, all of the four materials tested showed ev...
 
Read more
        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
--
Material Recommendations for Production of Wellhead and Christmas Tree Components
Presented herein is the review of material requirements a production well. this review includes evaluation of guidelines for wellhead and Christmas tree components which will be in contact with produced fluids under the following confotions: Partial Pressure CO2: 2.30 bar maximum; Partial Pressure H2S: 0.015 bar maximum; Water: 0-60 vol. Percent; Chlorides in Water: 2 wt. Percent: Reservoir Temperature: 94 C
 
Read more
        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
--
Erosion Corrosion Evaluation of Cu-Ni Tubing Products
Flow loop tests were conducted to evaluate the erosion-corrosion resistance of cupronickel heat exchanger tubes. 95-5 and CA 122 tubes were subjected to 10, 15 and 22.5 ft/sec flow rates in 45 F refreshed tap water for three, six and nine month periods, then returned to a separate contractor for evaluation.
 
Read more
        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
--
Evaluation of SCC Resistance of Alloy 825
Slow Strain Rate (SSR) tests were conducted to evaluate Alloy 825 for stress corrosion cracking resistance in an H2S/Brine environment at elevated temperatures.
 
Read more
        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
 
     
1 2 

ABOUT SSL CERTIFICATES