Process suitable for rapidly screening corrosion inhibitor of carbon dioxide flooding oil production well

• Main Authors: TONG HANG, ZENG FENG, CAI LELE, PENG ZHENGDE, LI HAO, ZENG DEZHI, YU ZHIMING, SHI TAIHE
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a process suitable for rapidly screening a corrosion inhibitor of a carbon dioxide flooding oil production well, which belongs to the technical field of oil production engineering. The process comprises the following steps: (1) acquiring corrosion condition parameters of an oil production well; (2) searching for the corrosion inhibitor meeting the requirement, and numbering the corrosion inhibitor; (3) performing the compatibility experiment on the found corrosion inhibitor, and screening the corrosion inhibitor which is good in compatibility with the on-situ water; (4) rapidly screening the corrosion inhibitor with a corrosion inhibition rate greater than 90 percent by adopting an electrochemical corrosion detection method; (5) considering different materials andphase states, evaluating the corrosion inhibitor screened in step (4) by utilizing a static high-temperature high-pressure kettle, and screening the corrosion inhibitor with the corrosion rate smallerthan or equal to 0.076mm/