US 10,889,749 B2
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
Pious V. Kurian, Sugar Land, TX (US); Mingli Wei, Naperville, IL (US); and Kin-Tai Chang, Sugar Land, TX (US)
Assigned to ChampionX USA Inc., Sugar Land, TX (US)
Filed by ChampionX USA Inc., Sugar Land, TX (US)
Filed on Dec. 4, 2018, as Appl. No. 16/208,775.
Application 14/804,973 is a division of application No. 13/359,596, filed on Jan. 27, 2012, granted, now 9,120,965, issued on Sep. 1, 2015.
Application 16/208,775 is a continuation of application No. 14/804,973, filed on Jul. 21, 2015, granted, now 10,214,679.
Prior Publication US 2019/0100690 A1, Apr. 4, 2019
Int. Cl. C09K 8/588 (2006.01); C09K 8/594 (2006.01); E21B 43/16 (2006.01)
CPC C09K 8/588 (2013.01) [C09K 8/594 (2013.01); E21B 43/164 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An injection fluid for the recovery of hydrocarbon fluids from a subterranean formation, comprising an aqueous medium and about 100 ppm to about 50,000 ppm of crosslinked polymeric microparticles based on polymer actives in the fluid, wherein the crosslinked polymeric microparticles comprise about 0.9 to about 20 mole percent of one or more labile crosslinkers, wherein the particles have an expanded particle size distribution and rheology suitable to impede a subterranean flow of water, and wherein the at least one labile crosslinker is selected from at least one of structures 1-11, 13-26:

OG Complex Work Unit Drawing

OG Complex Work Unit Drawing

OG Complex Work Unit Drawing