US 11,884,891 B2
Environmentally friendly flow improvers with improved formulation stability at low temperatures
Tore Nordvik, Sandnes (NO); Rachael Anne Cole, Sandnes (NO); Chandrashekhar Yeshwant Khandekar, Humble, TX (US); and Pradyumna Avinash Deshpande, Aberdeen (GB)
Assigned to CAMERON INTERNATIONAL CORPORATION, Houston, TX (US)
Appl. No. 17/609,898
Filed by Cameron International Corporation, Houston, TX (US)
PCT Filed May 12, 2020, PCT No. PCT/US2020/032479
§ 371(c)(1), (2) Date Nov. 9, 2021,
PCT Pub. No. WO2020/231994, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/848,283, filed on May 15, 2019.
Prior Publication US 2022/0220405 A1, Jul. 14, 2022
Int. Cl. C10L 10/06 (2006.01); C09K 8/524 (2006.01); C09K 8/588 (2006.01); C10L 1/198 (2006.01); C10L 1/2383 (2006.01); C10L 10/16 (2006.01)
CPC C10L 10/16 (2013.01) [C09K 8/524 (2013.01); C09K 8/588 (2013.01); C10L 1/1983 (2013.01); C10L 1/2383 (2013.01); C10L 2250/04 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of treating petroleum fluids, comprising:
adding a flow improver composition to the petroleum fluids, the flow improver composition, comprising:
a solvent; and
a dendrimer-based flow improver that is a reaction product of a base dendrimer represented by the structure:

OG Complex Work Unit Chemistry
and erucic acid or behenic acid,
wherein the base dendrimer comprises surface sites and at least 50% of the surface sites are chemically modified with erucic acid or behenic acid,
wherein at least one surface site is chemically modified via amidation with erucic acid and at least one surface site is chemically modified via amidation with behenic acid, and
wherein a mole ratio of erucic acid to behenic acid that undergoes amidation on the surface sites of the dendrimer is between about 10:1 to 1:10.