Correlation of the Results Obtained With Corrosion Inhibitors in the Laboratory and in the Field★

CORROSION ◽  
1956 ◽  
Vol 12 (1) ◽  
pp. 33-38 ◽  
Author(s):  
G. E. PURDY ◽  
WILLIAM J. RIES
Keyword(s):  
Field Test ◽  
Test Data ◽  
Corrosion Test ◽  
Corrosion Inhibitors ◽  
Oil Field ◽  
Test Method ◽  
Internal Corrosion ◽  
West Texas ◽  
Organic Inhibitors ◽  
The Many

Abstract One of the responsibilities of the oil field corrosion engineer is to correlate laboratory and field test data. With this in mind the principle factors which influence internal corrosion in oil wells (factors which the corrosion engineer must consider) are reviewed here. A laboratory corrosion test method is discussed. Corrosion rate data obtained in the laboratory with three West Texas crude oil and brine systems and the corrosion inhibition obtained in these systems with two organic inhibitors are analyzed and compared. Field corrosion test data for the same three fields are presented. The correlation of laboratory and field test data is discussed in relation to the many variables encountered. It is concluded that the evaluation of the use of inhibitors in some cases may be difficult and may require considerable experience and judgment on the part of the corrosion engineer.

scholarly journals A Novel Incipient Evaluation Method for Postconstruction Settlement by Using a Statistic Approach with Time-Extended Loading Test

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Baoning Hong ◽  
Hao Shan ◽  
Xin Liu ◽  
Fenqiang Xu ◽  
Ke Sheng
Keyword(s):  
Field Test ◽  
Test Data ◽  
Evaluation Method ◽  
Early Stage ◽  
Test Procedure ◽  
Assessment Method ◽  
Assessment System ◽  
Test Method ◽  
Loading Test ◽  
Static Loading Test

This paper proposes an incipient assessment method for postconstruction settlement of highway subgrade by using statistical analysis approach with an improved static loading test method, time-extended loading test. The time-extended loading residual settlement Sr(t) and settlement rate Vs(t) are calculated from the field test data. The test procedure and the corresponding experimental validations are presented. Based on the field test data, a probabilistic model is built to bridge the final residual settlement and the actual postconstruction settlements. The proposed time-extended loading test based assessment system has been validated through three operating and well-documented road sections. According to the validation results, the construction quality can be accurately evaluated at an early stage and the corresponding remedial measures can be applied timely.

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

scholarly journals Laboratory experiment on the nano-TiO2 photocatalytic degradation effect of road surface oil pollution

2020 ◽  
Vol 9 (1) ◽  
pp. 922-933
Author(s):  
Qing’e Wang ◽  
Kai Zheng ◽  
Huanan Yu ◽  
Luwei Zhao ◽  
Xuan Zhu ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Oil Pollution ◽  
Road Surface ◽  
Test Method ◽  
Driving Safety ◽  
The Road ◽  
Road Surfaces ◽  
The Many ◽  
The Impact ◽  
Degradation Effect

AbstractOil leak from vehicles is one of the most common pollution types of the road. The spilled oil could be retained on the surface and spread in the air voids of the road, which results in a decrease in the friction coefficient of the road, affects driving safety, and causes damage to pavement materials over time. Photocatalytic degradation through nano-TiO2 is a safe, long-lasting, and sustainable technology among the many methods for treating oil contamination on road surfaces. In this study, the nano-TiO2 photocatalytic degradation effect of road surface oil pollution was evaluated through the lab experiment. First, a glass dish was used as a substrate to determine the basic working condition of the test; then, a test method considering the impact of different oil erosion degrees was proposed to eliminate the effect of oil erosion on asphalt pavement and leakage on cement pavement, which led to the development of a lab test method for the nano-TiO2 photocatalytic degradation effect of oil pollution on different road surfaces.

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