US 11,725,133 B2
Fluid systems for expanding shape memory polymers and removing filter cakes
Dorianne A. Castillo, Humble, TX (US); Autumn Shepherd, Katy, TX (US); and Ajay Kumar Venkata Addagalla, Guntur (IN)
Assigned to BAKER HUGHES OILFIELD OPERATIONS LLC, Houston, TX (US)
Filed by Dorianne A. Castillo, Humble, TX (US); Autumn Shepherd, Katy, TX (US); and Ajay Kumar Venkata Addagalla, Guntur (IN)
Filed on Oct. 26, 2021, as Appl. No. 17/510,721.
Claims priority of provisional application 63/227,081, filed on Jul. 29, 2021.
Prior Publication US 2023/0052268 A1, Feb. 16, 2023
Int. Cl. E21B 33/12 (2006.01); C09K 8/528 (2006.01); C09K 8/54 (2006.01); E21B 37/00 (2006.01); E21B 41/02 (2006.01)
CPC C09K 8/528 (2013.01) [C09K 8/54 (2013.01); E21B 33/1208 (2013.01); E21B 37/00 (2013.01); C09K 2208/32 (2013.01); E21B 41/02 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method comprising:
disposing a device into a borehole in proximity to a subterranean formation where a filter cake has been formed adjacent thereto, the device comprising a support structure and a shape-memory article disposed at the support structure, the shape-memory article comprising a shape-memory polymer, wherein the device is disposed when the shape-memory article is in a compacted shape;
exposing the shape-memory article to a fluid system to cause the shape-memory article to expand and conform to a surface of the filter cake;
exposing the filter cake to the fluid system; and
removing the filter cake with the fluid system to cause the shape-memory article to conform to a surface of the borehole;
wherein the fluid system comprises (i) an acid component; (ii) an activator, (iii) a viscosifier, (iv) water or a brine, and (v) a surfactant.