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51313-02079-Study of C110 Critical Stress Intensity Factor (KISSC) in Various Weak H2S Solutions

Product Number: 51313-02079-SG
ISBN: 02079 2013 CP
Author: Samar Saha
Publication Date: 2013
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Abstract:

The presence of hydrogen sulfide (H2S) in the oil and gas exploration and production process poses hydrogen embrittlement and sulfide stress cracking (SSC) concerns for high-strength low-alloy (HSLA) steels commonly used in Oil Country Tubular Goods. This paper presents Critical Stress Intensity Factor (KISSC) data on two heats of standard mill-produced C110 casing (micro alloyed 4130 type steel). Double Cantilevered Beam (DCB) samples from this material were tested in NACE A solution to the requirements of NACE Standard TMO177 Method D in various sour environments (3.5% 7.0% 14% 22.0% 50% and 100% H2S) under a range of applied loads (wedges 20 25 30 35 and 40 mils thick ). A simplified approach is presented to derive and develop DCB test variables an acceptance range for KISSC and KISSC compliance for C110 material exposed to H2S environments that are not covered by the current NACE Standard
 

Abstract:

The presence of hydrogen sulfide (H2S) in the oil and gas exploration and production process poses hydrogen embrittlement and sulfide stress cracking (SSC) concerns for high-strength low-alloy (HSLA) steels commonly used in Oil Country Tubular Goods. This paper presents Critical Stress Intensity Factor (KISSC) data on two heats of standard mill-produced C110 casing (micro alloyed 4130 type steel). Double Cantilevered Beam (DCB) samples from this material were tested in NACE A solution to the requirements of NACE Standard TMO177 Method D in various sour environments (3.5% 7.0% 14% 22.0% 50% and 100% H2S) under a range of applied loads (wedges 20 25 30 35 and 40 mils thick ). A simplified approach is presented to derive and develop DCB test variables an acceptance range for KISSC and KISSC compliance for C110 material exposed to H2S environments that are not covered by the current NACE Standard
 

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