US 12,454,640 B2
Hyperbranched corrosion inhibitors
Chandrashekhar Yeshwant Khandekar, Humble, TX (US); Rachael Anne Hughes, Sandnes (NO); Tore Nordvik, Sandnes (NO); Kevin Paul Ramirez, Houston, TX (US); Bastian Sauerer, Houston, TX (US); and Alyn Edward Jenkins, Aberdeen (GB)
Assigned to CAMERON INTERNATIONAL CORPORATION, Houston, TX (US)
Filed by Cameron International Corporation, Houston, TX (US)
Filed on Mar. 22, 2024, as Appl. No. 18/613,839.
Claims priority of provisional application 63/491,983, filed on Mar. 24, 2023.
Prior Publication US 2024/0318067 A1, Sep. 26, 2024
Int. Cl. C09K 8/54 (2006.01)
CPC C09K 8/54 (2013.01) [C09K 2208/32 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method, comprising:
flowing a produced stream containing hydrocarbon and corrosive species from a well through a pipe; and
flowing, into the pipe, a water-based corrosion inhibitor comprising a hyperbranched polymer terminated by amino carboxylic acid, the hyper branched polymer made by a condensation reaction of a hyperbranched polymer having terminal hydroxyl groups.