Modeling Localized Corrosion of Corrosion-Resistant Alloys in Oil and Gas Production Environments: Part I. Repassivation Potential

CORROSION ◽  
10.5006/1692 ◽  
2015 ◽  
Vol 71 (10) ◽  
pp. 1197-1212 ◽  
Author(s):  
A. Anderko ◽  
F. Gui ◽  
L. Cao ◽  
N. Sridhar ◽  
G.R. Engelhardt
Keyword(s):  
Oil And Gas ◽  
Gas Production ◽  
Localized Corrosion ◽  
Oil And Gas Production ◽  
Corrosion Resistant ◽  
Repassivation Potential ◽  
Production Environments

SANICRO 41

Alloy Digest ◽  
1995 ◽  
Vol 44 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Oil And Gas ◽  
High Strength ◽  
Heat Treating ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Corrosion Resistant ◽  
Corrosion Resistant Alloy ◽  
Nickel Base

Abstract SANDVIK SANICRO 41 is a nickel-base corrosion resistant alloy with a composition balanced to resist both oxidizing and reducing environments. A high-strength version (110) is available for oil and gas production. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-475. Producer or source: Sandvik.

STUDY OF CHEMICAL REAGENTS AGAINST CORROSION PROCESSES IN THE CONDITIONS OF THE UZEN FIELD

2021 ◽  
Vol 73 (1) ◽  
pp. 185-195
Author(s):  
U. Zh. Tazhenbayeva ◽  
◽  
Ye.O. Ayapbergenov ◽  
G. Zh. Yeligbayeva ◽  
◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Freezing Temperature ◽  
Gas Production ◽  
Localized Corrosion ◽  
Laboratory Research ◽  
Oil And Gas Production ◽  
Field Equipment ◽  
Long Run

One of the biggest challenges in oil and gas production projects is dealing with the various types of corrosion to which certain parts of field equipment are exposed. Selecting the right corrosion inhibitor for the specific environment is extremely important. Choosing inhibitors for a particular location can be a difficult task because there are many factors to be considered. Understanding the corrosion problems that can arise is important in the oil and gas industry, and knowledge of which inhibitors to use to deal with general and localized corrosion will save time and money in the long run. This article presents the results of studies of various brands of domestic and foreign corrosion inhibitors for use in the Uzen field: physical and chemical characteristics (density, viscosity, freezing temperature, mass fraction of active substance, compatibility with field waters, amine number), efficiency of corrosion inhibitors in laboratory conditions and on a bench simulating field reservoir conditions, taking into account pressure, temperature, fluid flow rate, as well as aggressive components - hydrogen sulfide and carbon dioxide. In addition, studies of corrosion inhibitors' effect on the process of preparation of production are also given. The works were carried out in the center of scientific and laboratory research of KMG Engineering branch " KazNIPImunaygas" LLP.

scholarly journals The Effect of H2S Pressure on the Formation of Multiple Corrosion Products on 316L Stainless Steel Surface

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
M. Shah ◽  
M. T. M. Ayob ◽  
R. Rosdan ◽  
N. Yaakob ◽  
Z. Embong ◽  
...  
Keyword(s):  
Passive Film ◽  
Photoelectron Spectroscopy ◽  
Oil And Gas ◽  
Safety Concern ◽  
Product Layer ◽  
Gas Production ◽  
Localized Corrosion ◽  
Stainless Steel Surface ◽  
Oil And Gas Production ◽  
316L Steel

H2S gas when exposed to metal can be responsible for both general and localized corrosion, which depend on several parameters such as H2S concentration and the corrosion product layer formed. Therefore, the formation of passive film on 316L steel when exposed to H2S environment was investigated using several analysis methods such as FESEM and STEM/EDS analyses, which identified a sulfur species underneath the porous structure of the passive film. X-ray photoelectron spectroscopy analysis demonstrated that the first layer of CrO3 and Cr2O3 was dissolved, accelerated by the presence of H2S-Cl-. An FeS2 layer was formed by incorporation of Fe and sulfide; then, passivation by Mo took place by forming a MoO2 layer. NiO, Ni(OH)2, and NiS barriers are formed as final protection for 316L steel. Therefore, Ni and Mo play an important role as a dual barrier to maintain the stability of 316L steel in high pH2S environments. For safety concern, this paper is aimed to point out a few challenges dealing with high partial pressure of H2S and limitation of 316L steel under highly sour condition for the oil and gas production system.

A comprehensive assessment of the performance of corrosion resistant alloys in hot acidic brines for application in oil and gas production

2017 ◽  
Vol 52 (2) ◽  
pp. 99-113 ◽  
Author(s):  
Claudio Mele ◽  
Marco V. Boniardi ◽  
Andrea Casaroli ◽  
Mattia Degli Esposti ◽  
Domenico Di Pietro ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Gas Production ◽  
Comprehensive Assessment ◽  
Oil And Gas Production ◽  
Corrosion Resistant

Characterization of Corrosion Scales on Fe-13Cr Stainless Steel

1998 ◽  
Vol 4 (S2) ◽  
pp. 542-543
Author(s):  
S. Subramanian ◽  
S. Ling ◽  
T. A. Ramanarayanan
Keyword(s):  
Stainless Steel ◽  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Rock Formation ◽  
Partial Pressures ◽  
Production Environments ◽  
Corrosion Resistant Alloy ◽  
Increase Productivity ◽  
Corrosion Scales

Fe-13Cr stainless steel is a corrosion resistant alloy (CRA) that is widely used in oil and gas production for equipment such as tubes in wells. The high temperature, high CO2 and H2S partial pressures of typical production environments and the significant amounts of Cl- containing water that is produced along with the hydrocarbons affects the corrosion processes. Fe-13Cr is used for tubes since it exhibits passivity and low corrosion rates in production environments. But, during production operations, it is often necessary to pump strong acids into the underground rock formation through the tubes to stimulate the field and increase productivity. This is done in order to dissolve deposits that clog pores in the rock formation, thus improving permeability and facilitating the flow of hydrocarbons. This is expected to significantly degrade the passivity and lead to increased corrosion. Therefore, there is a concern about the corrosion rate during the operation and the rate at which the alloy repassivates when production is resumed.

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