US 11,912,935 B2
Process for prevention and remediation of subterranean-formed metal-polymer complexes
Drew K. Brown, Katy, TX (US); Fati Malekahmadi, Houston, TX (US); and Yifan Li, Katy, TX (US)
Assigned to SELECT CHEMISTRY, LLC, Houston, TX (US)
Filed by SELECT CHEMISTRY, LLC, Houston, TX (US)
Filed on Oct. 31, 2022, as Appl. No. 17/977,613.
Application 17/977,613 is a continuation of application No. 16/995,449, filed on Aug. 17, 2020, granted, now 11,518,928.
Claims priority of provisional application 62/892,934, filed on Aug. 28, 2019.
Prior Publication US 2023/0073762 A1, Mar. 9, 2023
Int. Cl. C09K 8/68 (2006.01); C09K 8/88 (2006.01); C09K 8/52 (2006.01)
CPC C09K 8/68 (2013.01) [C09K 8/52 (2013.01); C09K 8/88 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A completion/stimulation/production fluid and injection mixture blend comprising:
an aqueous fluid,
a polymer system, wherein the polymer system includes:
a polymer comprising monomeric units, wherein the monomeric units comprise:
component (B) represented by the formula:

OG Complex Work Unit Chemistry
wherein within component (B), R1 is hydrogen, a C1-C6 alkyl, or a phenyl; R3 is a C1-C22 alkylene, a C1-C22 alkyl amide, a phenyl amide, a benzyl amide, a carboxylic C1-C22 alkylene ester, a phenyl, a benzyl, or a benzyl alkyl containing C1-C16 carbon atoms; and X is hydrogen, lithium, sodium, potassium, ammonium or a mixture thereof;
an injection mixture comprising a polyol, a natural sugar, and artificial sugar, or a combination thereof.
 
16. The composition of claim 15, wherein the polymer system is polyacrylamide slickwater, polyacrylamide slickwater-crosslinked, guar gum, guar gum and crosslinker, guar derivative, guar derivative crosslinked, carboxy methyl cellulose (CMC), or CMC crosslinked.