Prediction of Sulfide Stress Cracking in High-Strength Tubulars

CORROSION ◽  
1994 ◽  
Vol 50 (7) ◽  
pp. 537-545 ◽  
Author(s):  
H. Asahi ◽  
M. Ueno ◽  
T. Yonezawa
2021 ◽  
Author(s):  
Luciana I. L Lima ◽  
Christelle Gomes ◽  
Carine Landier ◽  
Marilia Lima ◽  
Kevin Schleiss ◽  
...  

Abstract In recent years the application of high strength carbon steel with 125ksi specified minimum yield strength as a production casing in deepwater and high-pressure reservoirs has increased. Sulfide stress cracking (SSC) can develop when high strength carbon steel is exposed to a sour environment. The H2S partial pressure in these sour reservoirs is above the 0.03 bar limit for this material at room temperature. Materials SSC performance evaluation requires an accurate simulation of field conditions in the laboratory. To evaluate the production casing SSC behavior, some fit for service (FFS) tests were carried out considering the well geothermic temperature profile for the materials selection. This paper presents a fit for service qualification carried out on Casing 125 ksi SMYS (Specified Minimum Yield Strength) materials. Two products with 125ksi SMYS were considered: one that has existed for several years and one developed more recently with a better SSC resistance – above the pH2S limit considered for the standard 125ksi SMYS material. The results obtained in this test program allowed casing 125 ksi SMYS materials selection for temperature above 65°C and environment more severe in terms of pH2S than the domain previously established for this grade. This allowed a new well production design, which saves one casing phase and avoids the necessity to use intermediate liners to prevent collapse.


CORROSION ◽  
1986 ◽  
Vol 42 (1) ◽  
pp. 54-61 ◽  
Author(s):  
A. Chavane ◽  
M. Habashi ◽  
G. M. Pressouyre ◽  
J. Galland

2019 ◽  
Vol 160 ◽  
pp. 108163 ◽  
Author(s):  
X.T. Wang ◽  
M. Liu ◽  
G.Y. Zhou ◽  
H. Jiang ◽  
X. Li ◽  
...  

CORROSION ◽  
1978 ◽  
Vol 34 (2) ◽  
pp. 47-52 ◽  
Author(s):  
A. JOSHI

Abstract The common occurrence of sulfide stress cracking failures of many steels in the intergranular mode suggests a need for a better understanding of the grain boundaries, particularly the boundary chemistry. The boundary chemistry of selected high strength steels is correlated to the minimum stress at failure in hydrogen sulfide solutions at room temperature. The technique of Auger electron spectroscopy (AES) in a scanning Auger microprobe was employed to study grain boùndary composition and distribution of second phases at fresh fracture surfaces. The results indicate that S and Mn, precipitated in the form of a thin film of (Fe, Mn)S or P present at grain boundaries degrade the SSC properties of the material.


2021 ◽  
Vol 902 ◽  
pp. 29-34
Author(s):  
Evgeniia A. Putilova ◽  
Kristina D. Kryucheva ◽  
Sergey M. Zadvorkin

This paper demonstrates the results of the study of microstructure and physical-mechanical properties of the high-strength economically alloyed Fe-Cr-Mo steel, developed by RosNITI JSC for the production of the oil country tubular goods (OCTG) (casing and tubing). The main requirement for this steel is to provide simultaneous increased strength and resistance to sulfide stress cracking (SSC). It was shown that this problem could be solved by special heat treatment. As a result, the structure of this steel consists of a secondary sorbite with a lower dislocation density. Hardening is provided by dispersion-strengthened V, Nb carbides.


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