1corrosion and a large amount of asphalt, resin2high corrosion rate stimulated by high hydrogen 3Oil production: object problems and solutions.4High corrosion rates of down-hole
Oil and Gas Industry: сorrosion
Problems with corrosion oil and gas industry
paraffins, corrosion, asphaltene and asphaltik resinous sediments, Hydrogen sulfide H2S, Carbon dioxide CO2
high corrosion rates of down-hole and flowline equipment stimulated by the content of large quantities of corrosive gases, in particular carbon dioxide (CO2), high content of dissolved corrosive mineral salts, mercaptans, naphthenic acid, etc. in formation water.
Conditions of use: content of CO2 in the corrosive environment was 1.75%, temperature in the system - 8000С.
How the problem was resolved
Application of DEFENDER series’ inhibitor
Dosage: continuous supply of 10-20 g of inhibitor per 1 ton of produced fluid.
Customer’s review of application results
Corrosion inhibitor DEFENDER-4215.5
Corrosion inhibitor DEFENDER-4215.5 was supplied in the producing well in the amount of 10g of inhibitor per 1 ton of produced fluid. Under these conditions, the rate of equipment corrosion, defined by the method described in the NACE Standard TM-0374, compared with the initial corrosion level, decreased by 90.1%.
After supplying corrosion inhibitor DEFENDER-4215.5 into producing well in the amount of 25 g of inhibitor per 1 ton of produced fluid the rate of equipment corrosion decreased by 97.2%, if compared with the initial corrosion level.
Based on the following results, experts of the oil production company came to the conclusion that, in order to achieve effective protection against corrosion of equipment surfaces of offshore productive wells, dosing of inhibitor DEFENDER-4215.5 in the amount of 10-12 g of inhibitor per 1 ton of produced fluid can be considered optimal.
Corrosion inhibitors Defender
Company: CORROSION RESEARCH AND TESTING CENTER Himipex-Oil