A Laboratory Method for the Evaluation of Oil Production Corrosion Inhibitors★

CORROSION ◽  
1956 ◽  
Vol 12 (8) ◽  
pp. 17-21 ◽  
Author(s):  
DAVID B. BOIES
Keyword(s):  
Mild Steel ◽  
Gas Phase ◽  
Test Specimen ◽  
Corrosion Inhibitors ◽  
Oil Production ◽  
Laboratory Method ◽  
Test Method ◽  
Field Conditions ◽  
Aromatic Content ◽  
Oil Blend

Abstract A test method used to screen and evaluate oil production corrosion inhibitors is described. Laboratory conditions are made to approximate field conditions as closely as possible with 20 ga mild steel (SAE 1010) as the test specimen. The effects on inhibitor performance of such variables as temperature, oil-brine ratio, aromatic content of oil blend, and composition of gas phase are shown graphically. 2.3.4

A Laboratory Method for Evaluating Corrosion Inhibitors for Secondary Recovery★

CORROSION ◽  
1959 ◽  
Vol 15 (6) ◽  
pp. 41-44 ◽  
Author(s):  
T. R. NEWMAN
Keyword(s):  
Dissolved Oxygen ◽  
Corrosion Inhibitors ◽  
High Ratio ◽  
Laboratory Method ◽  
Test Method ◽  
Dissolved Solids ◽  
Secondary Recovery ◽  
Laboratory Results ◽  
Inhibitor Level ◽  
Organic Inhibitors

Abstract A new test method is presented for evaluating corrosion inhibitors for secondary recovery systems. The test is characterized by its relatively high ratio of volume of water to surface area of metal exposed. Variables studied included dissolved oxygen, H2S, dissolved solids and pH. Corrosivity of a brine was found to be almost directly related to the dissolved oxygen level. It was found also that a high H2S system was not necessarily more corrosive than one having a low level of H2S, but that the attack became more localized. The higher the H2S level, the higher the inhibitor level required to obtain an equivalent level of protection. The greatest effects of variations in dissolved solids are indirect. The solubilities of dissolved gases and organic inhibitors are inversely proportional to the level of dissolved solids. The variation of pH in the range from 5 to 8 did not affect the performance of a typical inhibitor in a system without H2S. When H2S was present, the protection with this inhibitor dropped off slightly as the pH was lowered to 5. This test method was used to evaluate a number of commercial water flood inhibitors. Experimental inhibitors were tested until one was found that exceeded the performance of those now being used. This one was tested in several floods and the excellent performance, predicted from the laboratory results, was confirmed. 5.8.1

ELECTROCHEMICAL INVESTIGATION OF 2-THIOHYDANTOIN DERIVATIVES AS CORROSION INHIBITORS FOR MILD STEEL IN ACIDIC MEDIUM

2021 ◽  
Author(s):  
Petar Stanić ◽  
◽  
Nataša Vukićević ◽  
Vesna Cvetković ◽  
Miroslav Pavlović ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mild Steel ◽  
Acidic Medium ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Electrochemical Investigation ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hcl Solution ◽  
Scanning Electron

Four 2-thiohydantoin derivatives were synthesized and their corrosion inhibition properties on mild steel (MS) in 0.5M HCl solution was evaluated using usual gravimetric and electrochemical methods (weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS). Morphology of the metal surface was characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The study has shown that these compounds provide good protection for mild steel against corrosion in the acidic medium.

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