US 12,221,874 B2
Method for increasing production and injection of reservoir coupled with flue gas desulfurization and denitrification
Binglin Li, Qingdao (CN); Yuliang Su, Qingdao (CN); Binfei Li, Qingdao (CN); Chao Zhang, Qingdao (CN); Shouya Wu, Qingdao (CN); Dongxia Li, Qingdao (CN); Wendong Wang, Qingdao (CN); Lei Li, Qingdao (CN); and Yongmao Hao, Qingdao (CN)
Assigned to CHINA UNIVERSITY OF PETROLEUM, Qingdao (CN); and CHINA SHI DA EDUCATION DEVELOPMENT CO., LTD., Qingdao (CN)
Appl. No. 17/997,106
Filed by CHINA UNIVERSITY OF PETROLEUM, Qingdao (CN); and CHINA SHI DA EDUCATION DEVELOPMENT CO., LTD., Qingdao (CN)
PCT Filed Mar. 17, 2022, PCT No. PCT/CN2022/081516
§ 371(c)(1), (2) Date Oct. 25, 2022,
PCT Pub. No. WO2022/237320, PCT Pub. Date Nov. 17, 2022.
Claims priority of application No. 202110501599.7 (CN), filed on May 8, 2021.
Prior Publication US 2024/0401456 A1, Dec. 5, 2024
Int. Cl. E21B 43/27 (2006.01); B01D 53/60 (2006.01); B01D 53/78 (2006.01); E21B 41/00 (2006.01)
CPC E21B 43/27 (2020.05) [B01D 53/60 (2013.01); B01D 53/78 (2013.01); E21B 41/0057 (2013.01); B01D 2251/104 (2013.01); B01D 2251/106 (2013.01); B01D 2257/302 (2013.01); B01D 2257/404 (2013.01); B01D 2258/0283 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for increasing production and injection of a carbonate reservoir coupled with flue gas desulfurization and denitrification, characterized in that:
a desulfurizing and denitrating agent is mixed uniformly with H2O2 solution to prepare a solution, and the solution is sprayed into a flue gas in an opposite direction of flue gas flow to obtain a waste liquor; or O3 is mixed into the flue gas in the opposite direction of flue gas flow, and simultaneously the desulfurizing and denitrating agent is sprayed into the flue gas to obtain the waste liquor;
when the pH of the solution system reaches 6 to 6.5, the waste liquor is collected as an acid liquor and injected into a reservoir to increase production and injection thereof;
the desulfurizing and denitrating agent comprises Tetrahydroxyethyl Ethylenediamine (THEED) or 2,2′-Bipyridine (bipy) solution with a mass fraction of 0.010% to 0.025%.