US 11,945,995 B2
Temporary plugging agent and preparation method thereof, and method for temporary plugging and fracturing of high-temperature reservoir
Tiankui Guo, Dongying (CN); Yuelong Zhang, Dongying (CN); Zengbao Wang, Dongying (CN); Ning Qi, Dongying (CN); Mingliang Luo, Dongying (CN); Feipeng Wu, Dongying (CN); Ming Chen, Dongying (CN); Xiaoqiang Liu, Dongying (CN); Jiwei Wang, Dongying (CN); Xiaozhi Wang, Dongying (CN); and Yuanzhi Gong, Dongying (CN)
Assigned to CHINA UNIVERSITY OF PETROLEUM, Dongying (CN)
Appl. No. 17/258,749
Filed by CHINA UNIVERSITY OF PETROLEUM, Dongying (CN)
PCT Filed Dec. 15, 2020, PCT No. PCT/CN2020/136594
§ 371(c)(1), (2) Date Jan. 8, 2021,
PCT Pub. No. WO2021/196740, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010257174.1 (CN), filed on Apr. 2, 2020.
Prior Publication US 2022/0195284 A1, Jun. 23, 2022
Int. Cl. C09K 8/508 (2006.01); C09K 8/504 (2006.01); C09K 8/512 (2006.01); E21B 43/26 (2006.01)
CPC C09K 8/5083 (2013.01) [C09K 8/5045 (2013.01); C09K 8/512 (2013.01); E21B 43/261 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A temporary plugging agent, comprising the following components in mass fractions:
acrylamide 5%, composite crosslinking agent 1%, laponite 1%, ammonium persulfate 0.1% and water 92.9%;
wherein the composite crosslinking agent comprises polyethylene glycol diacrylate and N,N-methylenebisacrylamide.