US 12,448,561 B2
Encapsulation of oilfield chemicals for on-demand triggered release
Oleg Mazyar, Katy, TX (US); Rostyslav Dolog, Houston, TX (US); and Radhika Suresh, Sugar Land, TX (US)
Assigned to BAKER HUGHES OILFIELD OPERATIONS LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Aug. 14, 2023, as Appl. No. 18/449,366.
Prior Publication US 2025/0059436 A1, Feb. 20, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 37/06 (2006.01); C09K 8/42 (2006.01); C09K 8/516 (2006.01); C09K 8/524 (2006.01); C09K 8/528 (2006.01); C09K 8/54 (2006.01); C09K 8/92 (2006.01); E21B 43/34 (2006.01)
CPC C09K 8/92 (2013.01) [C09K 8/42 (2013.01); C09K 8/516 (2013.01); C09K 8/524 (2013.01); C09K 8/528 (2013.01); C09K 8/54 (2013.01); E21B 37/06 (2013.01); C09K 2208/26 (2013.01); C09K 2208/32 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A disintegrable oilfield chemical composite comprising:
a core comprising an oilfield chemical and a disintegrating agent comprising at least one of a phase change material or a gas-producing material; and
a shell encapsulating the core;
wherein the core comprises the gas-producing material, and the gas-producing material comprises at least one of an azo compound, an azide compound, or a metal carbonyl.