CURRENT APPROACHES AND NEW RESEARCH IN
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TEST RESULTS FOR OIL-SOLUBLE CORROSION INHIBITORS
A.K.Kuldoshev
F.N.Norkulov
A.T.Djalilov
Tashkent Research Institute of Chemical Technology, Uzbekistan.
https://doi.org/10.5281/zenodo.14439431
Abstract:
Corrosion inhibitors are special chemicals used to prevent
metals from oxidizing and corroding due to environmental influences. Corrosion
is a serious problem in the oil and gas industry, causing damage to pipelines,
tanks, and production equipment during production. Oil-soluble corrosion
inhibitors are substances that, when mixed with oil, penetrate its structure and
protect pipes and other metal structures. They form an inhibitory layer on the
metal surface, slowing or stopping the reaction between the metal and the
aggressive environment. The effectiveness of inhibitors depends on their
chemical structure, concentration, and environmental conditions. Oil-soluble
inhibitors are important in extending the service life of oil and gas pipelines and
reducing maintenance costs. These substances are widely used in the oil and gas
industry as an effective means of reducing corrosion.
Keywords:
Corrosion inhibitors, oil-soluble inhibitors, metal protection, oil
and gas industry, pipeline protection, corrosion prevention, service life
extension, maintenance costs, inhibitory layer, aggressive environment.
Introduction:
This test method is used to study the properties of nitrogen-
containing oil-soluble corrosion inhibitors. Since nitrogen-containing substances
are unsaturated, it should have high protective efficiency, since inhibitors with
double bonds in hydrocarbon radicals form bridge structures with double
attachment of molecules adsorbed on the metal to the metal, and are also
resistant to corrosion. It can be used in the production of oil-soluble sulfonate-
type corrosion inhibitors for ferrous metals, which are used as additives in
antifreezes and preservatives.
Research methodology:
Corrosion inhibitors play an important role in
preventing damage to metal surfaces in the oil and gas industry. Oil pipelines,
tanks, and production equipment are typically exposed to water, acids, gases,
and various chemicals, causing their metals to corrode quickly. This process can
damage production equipment, lead to accidents, economic losses, and even
environmental disasters. Working and protective compositions developed based
on used oils and developed corrosion inhibitors, their physicochemical,
CURRENT APPROACHES AND NEW RESEARCH IN
MODERN SCIENCES
International scientific-online conference
34
environmental and operational properties were studied, and the effect of adding
DOB-1 corrosion inhibitor to engine oil was studied.
Corrosion inhibitors are used to protect pipes and metal structures from
the harmful effects of chemical environments. To assess the effectiveness of
their use, methods for determining the corrosion rate and level of protection are
usually used.
Corrosion rate is a measure of the rate at which a metal dissolves or
deteriorates over a period of time. Based on the amount of metal lost by weight
or volume under conditions with or without inhibitor.
Three steel plates containing nanosilicon composites were taken for each
working and conservative composition study. The data obtained and the test
results are presented in Table 1.
Table 1
Determination of corrosion rates and protection levels of inhibitors
Sample
number
Sample
surface
S,m
2
Sample
mass
before
testing
M,g
Sample
mass
after
testing
M,g
Sample
mass
loss
M
1
-M
2
,g
V
n.i
Corrosion
rate in an
inhibitor-
free
environment,
g/ m
2
*s
V
i
Corrosion
rate in an
inhibitory
environment,
g/ m
2
*s
Protection
level
(Z)%
1
2
3
4
5
6
7
8
Inhibitor-
free
0,006 0,47821 0,38385 0,09436
0,13105
-
-
1%
0,006 0,44511 0,43492 0,01019
-
0,01415
89,2
3%
0,006 0,46972 0,46566 0,00406
-
0,00563
95,7
6%
0,006 0,49718 0,49634 0,00084
-
0,00177
99,1
Results and discussion:
These tests revealed that the best anti-corrosion
properties were achieved with a working-preservative composition consisting of
oil with the addition of 6% DOB-1 corrosion inhibitor.
Conclusion:
Oil-soluble corrosion inhibitors are one of the important
technological tools in the modern oil and gas industry. They not only protect
metal equipment and increase its service life, but also ensure the stability and
safety of production processes. The implementation of effective corrosion
prevention measures is of strategic importance for industrial enterprises, as it
helps to increase their economic efficiency and rational use of natural resources.
CURRENT APPROACHES AND NEW RESEARCH IN
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Pages
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