US 11,697,757 B2
Polymeric swellable scavengers for acidic gases
Sunita Sameer Kadam, Pune (IN); Vaishali Mishra, Karnataka (IN); Mohamed Abdel Salam, Houston, TX (US); Rahul Chandrakant Patil, Pune (IN); and Bhau Anantha Kuchik, Pune (IN)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Nov. 23, 2021, as Appl. No. 17/534,015.
Prior Publication US 2023/0159813 A1, May 25, 2023
Int. Cl. E21B 37/00 (2006.01); C09K 8/54 (2006.01); C09K 8/035 (2006.01); C08F 220/34 (2006.01)
CPC C09K 8/54 (2013.01) [C08F 220/34 (2013.01); C09K 8/035 (2013.01); E21B 37/00 (2013.01); C08F 2800/10 (2013.01); C09K 2208/20 (2013.01); C09K 2208/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
introducing a treatment fluid into a wellbore, the treatment fluid comprising a polymeric swellable acid scavenger that comprises at least one polymeric composition, the wellbore extending into a subterranean formation in which acid-containing fluid is present;
contacting the acid-containing fluid with the at least one polymeric composition:
reducing acid in the acid-containing fluid by forming a swollen polymeric material in the wellbore due to contact between the at least one polymeric composition with the acid-containing fluid; and
removing the swollen polymeric material from the wellbore along with recovered treatment fluid.