US 11,952,324 B2
Amidoamine synthesis, methods to track the reaction process
Dimitri M. Khramov, Katy, TX (US); Yiyan Chen, Sugar Land, TX (US); and Albert Okhrimenko, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 16/636,017
Filed by M-I L.L.C., Houston, TX (US)
PCT Filed Aug. 2, 2018, PCT No. PCT/US2018/044903
§ 371(c)(1), (2) Date Feb. 2, 2020,
PCT Pub. No. WO2019/028198, PCT Pub. Date Feb. 7, 2019.
Claims priority of provisional application 62/541,464, filed on Aug. 4, 2017.
Prior Publication US 2021/0323909 A1, Oct. 21, 2021
Int. Cl. C09K 8/035 (2006.01); C07C 231/02 (2006.01); C09K 8/36 (2006.01); G01N 30/72 (2006.01); G01N 30/02 (2006.01)
CPC C07C 231/02 (2013.01) [C09K 8/035 (2013.01); C09K 8/36 (2013.01); G01N 30/72 (2013.01); G01N 2030/025 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method of formulating a wellbore fluid, the method comprising:
quantifying the concentration of residual free amine and/or free carboxylic acid in a product mixture prepared from a reaction of a multireactive species and a fatty reactant, wherein the reaction of a multireactive species and a fatty reactant comprises an amide- or imine-forming reaction;
verifying that the concentration for the free amine and/or free acid in the product mixture is within an acceptable threshold; and
combining the product mixture with one or more wellbore fluid components to generate the wellbore fluid;
wherein quantifying the concentration of the residual free amine and/or free carboxylic acid comprises nonaqueous titration.