US 12,319,872 B2
Treatment of subterranean formations with crosslinked fluids
Lijun Lin, Katy, TX (US); Chuanxin Zhang, Beijing (CN); Guodong Wu, Beijing (CN); Bo Huang, Beijing (CN); and Stephanie Yu, Houston, TX (US)
Assigned to CNPC USA Corporation, Houston, TX (US); Beijing Huamei, Inc., Beijing (CN); and Xinjiang Oilfield Company, Karamay (CN)
Filed by CNPC USA Corporation, Sugar Land, TX (US); and BEIJING HUAMEI INC., Beijing (CN)
Filed on Sep. 16, 2020, as Appl. No. 16/948,403.
Prior Publication US 2022/0081611 A1, Mar. 17, 2022
Int. Cl. C09K 8/68 (2006.01); C09K 8/66 (2006.01); E21B 43/26 (2006.01); E21B 43/267 (2006.01)
CPC C09K 8/685 (2013.01) [C09K 8/665 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A fracturing fluid, comprising:
0.12-0.5 wt % hydroxypropyl guar (“HPG”);
0.1-0.6 vol % crosslinker comprising ulexite;
0.12 wt % temperature stabilizer comprising ethanolamine; and
NaOH to adjust the pH of the fracturing fluid to between 8.5-12.0;
wherein the fracturing fluid is at a temperature in a temperature range of 125 to 175 degrees Fahrenheit, and wherein viscosity of the fracturing fluid remains within a range of 50 cP for at least 2 hours at the temperature.