US 12,072,278 B2
Development of control samples to enhance the accuracy of HIC testing
Mohammed Al-Anezi, Dhahran (SA); Khalid Babakri, Dhahran (SA); and Saad Al-Muaili, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 13, 2023, as Appl. No. 18/134,155.
Application 18/134,155 is a division of application No. 17/207,377, filed on Mar. 19, 2021, granted, now 11,656,169.
Prior Publication US 2023/0251181 A1, Aug. 10, 2023
Int. Cl. G01N 17/02 (2006.01); E21B 47/117 (2012.01); G01N 17/00 (2006.01)
CPC G01N 17/02 (2013.01) [G01N 17/006 (2013.01); E21B 47/117 (2020.05)] 9 Claims
OG exemplary drawing
 
1. A method for qualifying a hydrogen induced cracking (HIC) susceptible material candidate as a valid source for extracting control samples for use in HIC testing on HIC resistant material candidates, the method comprising:
obtaining an HIC susceptible material candidate;
extracting a plurality of specimens from the HIC susceptible material candidate;
performing a standardized HIC test on each of the plurality of specimens;
calculating a value of a predetermined cracking criteria for each of the plurality of specimens subsequent to the standardized HIC test;
determining whether the calculated value of the predetermined cracking criteria for each of the plurality of specimens is at least equal to a predetermined minimum threshold value; and
qualifying the HIC susceptible material candidate as a valid source for extracting control samples in response to determining that the calculated value of the predetermined cracking criteria for each of the plurality of specimens is at least equal to the predetermined minimum threshold value.