Composite corrosion inhibitor for high-temperature high-density test liquid

Application Number: 00107565
Application Date: 2000.05.19
Publication Number: 1324960
Publication Date: 2001.12.05
Priority Information:
International: C23F11/16
Applicant(s) Name: Jianghan Petroleum College
Inventor(s) Name: Shu Fuchang;Peng Fang;Mei Ping
Patent Agency Code: 11240
Patent Agent: liu guobeng
Abstract A compound corrosion inhibitor applicable to high-temp. high-density test liquor includes main corrosion inhibitor, auxiliary corrosion inhibitor and supressing agent, in which the main corrosion inhibitor is sodium rhodanate and thioglycolic acid, and its auxiliary corrosino inhibitor is boric acid, and its supressing agent is glutaraldehyde. Said invented compound corrosion inhibitor is added in the test liquor, it can meet the requirements for resisting corrosion in the course of well completion test under the conditions of high temp. (T is less than or equal to 220 deg.C) and high pressure (P is less than or equal to 10 MPa).