US 11,655,930 B2
Reducing the risk of corrosion in pipelines
Tariq Abdulwahed Ali Alghamdi, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Sep. 4, 2020, as Appl. No. 17/12,612.
Claims priority of provisional application 62/896,936, filed on Sep. 6, 2019.
Claims priority of provisional application 62/896,941, filed on Sep. 6, 2019.
Prior Publication US 2021/0071807 A1, Mar. 11, 2021
Int. Cl. F16L 55/00 (2006.01); F16L 58/04 (2006.01); C23F 11/12 (2006.01); F16L 9/14 (2006.01); F16L 9/22 (2006.01); F16L 58/08 (2006.01); F16L 58/18 (2006.01); B23K 101/10 (2006.01); E21B 17/08 (2006.01)
CPC F16L 58/04 (2013.01) [C23F 11/12 (2013.01); F16L 9/14 (2013.01); F16L 9/22 (2013.01); F16L 58/08 (2013.01); F16L 58/181 (2013.01); B23K 2101/10 (2018.08); E21B 17/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tubular comprising:
a carbon steel main body defining a first flow passage, the carbon steel main body comprising a first end and a second end, the carbon steel main body comprising a beveled edge at the first end of the carbon steel main body, the carbon steel main body comprising carbon steel; and
a corrosion resistant pup defining a second flow passage in-line with the first flow passage, the corrosion resistant pup comprises a substantially same inner diameter and outer diameter as the carbon steel main body, the corrosion resistant pup comprising a corrosion resistant alloy through an entire thickness of the corrosion resistant pup, the corrosion resistant pup comprising a first end and a second end, the corrosion resistant pup comprising a first beveled edge at the first end, the corrosion resistant pup being connected to the carbon steel main body by a weld along the beveled edge of the carbon steel main body and the beveled edge of the corrosion resistant pup, the corrosion resistant pup comprising a metal different from the carbon steel of the carbon steel main body; and
a galvanic protection system configured to reduce galvanic corrosion between the carbon steel and the corrosion resistant pup.