LAPSE:2023.11439
Published Article
LAPSE:2023.11439
An Investigation of Microstructure Characteristic and Sulfide Stress Cracking Behavior of 110 ksi Cr-Mo Grade Casing Steel
February 27, 2023
Abstract
The sulfide stress cracking (SSC) behavior of three micro-alloying 110 ksi grade Cr-Mo casing steels were evaluated according to the A-Method tensile test specified in the NACE TM0177 standard (NACE A-method). The fractures of SSC specimens and the micro-structures of the casing steels were characterized by scanning electron microscopy (SEM) with electron backscattering diffraction (EBSD) and transmission electron microscopy (TEM) in the BF and STEM mode. The results show that on the premise of 110 ksi, the yield strength of Co-Mo steel was satisfactory, finer spherical carbides increased the number of irreversible traps; widened polygonised martensitic laths, lowered dislocation density, and lowered the proportion of high-angle grain boundaries and the Σ3 boundaries decreased hydrogen permeability and diffusivity. The SSC resistance of Co-Mo steel with above micro structure characteristics was enhanced.
The sulfide stress cracking (SSC) behavior of three micro-alloying 110 ksi grade Cr-Mo casing steels were evaluated according to the A-Method tensile test specified in the NACE TM0177 standard (NACE A-method). The fractures of SSC specimens and the micro-structures of the casing steels were characterized by scanning electron microscopy (SEM) with electron backscattering diffraction (EBSD) and transmission electron microscopy (TEM) in the BF and STEM mode. The results show that on the premise of 110 ksi, the yield strength of Co-Mo steel was satisfactory, finer spherical carbides increased the number of irreversible traps; widened polygonised martensitic laths, lowered dislocation density, and lowered the proportion of high-angle grain boundaries and the Σ3 boundaries decreased hydrogen permeability and diffusivity. The SSC resistance of Co-Mo steel with above micro structure characteristics was enhanced.
Record ID
Keywords
110 ksi casing steel, carbides, grain boundary, micro-structure characteristics, sulfide stress cracking resistance
Subject
Suggested Citation
Lu C, Zhang H, Li D, Han L, Wang J, Li J, Qi Y, Li F, Tian Y. An Investigation of Microstructure Characteristic and Sulfide Stress Cracking Behavior of 110 ksi Cr-Mo Grade Casing Steel. (2023). LAPSE:2023.11439
Author Affiliations
Lu C: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China; State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’a
Zhang H: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Li D: Tianjin Gas Storage Branch, PetroChina Dagang Oilfield Company, Tianjin 300280, China
Han L: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Wang J: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Li J: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Qi Y: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Drilling Engineering Technology Research Institute of Daqing Drilling Engineering Company, Petrochina Daqing Oilfield Company, Daqing 163413, China
Li F: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Tian Y: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Drilling Engineering Technology Research Institute of Daqing Drilling Engineering Company, Petrochina Daqing Oilfield Company, Daqing 163413, China
Zhang H: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Li D: Tianjin Gas Storage Branch, PetroChina Dagang Oilfield Company, Tianjin 300280, China
Han L: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Wang J: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Li J: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Qi Y: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Drilling Engineering Technology Research Institute of Daqing Drilling Engineering Company, Petrochina Daqing Oilfield Company, Daqing 163413, China
Li F: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China
Tian Y: College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Drilling Engineering Technology Research Institute of Daqing Drilling Engineering Company, Petrochina Daqing Oilfield Company, Daqing 163413, China
Journal Name
Processes
Volume
11
Issue
2
First Page
548
Year
2023
Publication Date
2023-02-10
ISSN
2227-9717
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PII: pr11020548, Publication Type: Journal Article
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LAPSE:2023.11439
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https://doi.org/10.3390/pr11020548
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