Results 261 to 270 of about 23,325 (311)
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Modelling of CO2 Corrosion Mechanisms
1994A model of electrochemical reactions occurring in a water — CO2 system is presented that takes into account the following electrochemical reactions: hydrogen ion reduction, carbonic acid reduction, direct water reduction and anodic dissolution of iron. Performance of the model is demonstrated through a study of the effects of some key parameters in CO2
Srdjan Nesic, John Postlethwaite
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CO2 Corrosion in the Anadarko Basin
SPE Deep Drilling and Production Symposium, 1984Abstract Some high pressure, temperature and volume gas wells located in the Anadarko Basin area of Washita, Beckham, and Roger Mills counties of Oklahoma have demonstrated in several cases severe corrosion rates which has led to surface equipment and tubular failures.
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High Salt Concentration Effects on CO2 Corrosion and H2S Corrosion
CORROSION 2010, 2010Abstract The general CO2 corrosion rates of C1018 carbon steel have been measured for NaCl concentrations 3 – 25 wt% at 20°C, pH 4.0, 5.0 and 6.0. The corrosion process was monitored by linear polarization resistance and potentiodynamic sweeps.
Haitao Fang, Bruce Brown, Srdjan Nešić
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Controlling CO2 Corrosion with Inhibitors
CORROSION 1998, 1998Abstract Transport of corrosion inhibitor to the location where they are needed is one of the primary concerns in the use of corrosion inhibitors. Two different types of inhibitors for controlling CO2 corrosion in gas well wellheads and flowlines are used as examples.
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Prediction of CO2 Corrosion of Carbon Steel
CORROSION 1993, 1993Abstract Various aspects of the mechanism of CO2 corrosion are reviewed, together with a discussion about the validity of a number of simplifications which can be used with models for predicting the corrosion rate. A "worst case" rate can often be predicted.
C. de Waard, U. Lotz
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Modes of CO2-Corrosion Damage: Consequences for Corrosion Control Strategies
CORROSION 1996, 1996Abstract CO2-corrosion damage to C-steel and low-alloy steel may take various forms; the major types being pitting, grooving and uniform attack. In particular for tubular and pressure containing components, the significance of such damage on safety and reliability is dependent on its interaction with operational loads, and the potential ...
T. Sydberger, J.D. Edwards, O. Bjornoy
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The Role of Acetate Ions in CO2 Corrosion
CORROSION 1983, 1983Abstract In the waters produced by oil and gas wells, the presence of anions of weak organic acids, mainly acetates, has been reported for a long time. In routine water analyses however, they are generally not differentiated from bicarbonates, and this is shown to induce considerable errors in the appreciation of the pH of production ...
J.L. Crolet, M.R. Bonis
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Improving Mechanistic CO2 Corrosion Models
CORROSION 2009, 2009Abstract CO2 corrosion is observed in the oil and gas industry. It is becoming an increasing problem in the power industry due to the demand for CO2 capture. The research community has had an increased focus on the specific problem in order to develop predictive models for forecasting process equipment corrosion rates ...
Philip L. Fosbøl +2 more
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EIS Investigation of CO2/H2S Corrosion
CORROSION 2004, 2004Abstract This paper covers one of the building blocks required to complete a mechanistic CO2 / H2S corrosion model: electrochemistry of carbon steel CO2 corrosion in the presence of traces of H2S (3-250 ppm in the gas phase). Electrochemical impedance spectroscopy and linear polarisation resistance were used to investigate the mechanism ...
Kun-Lin John Lee, Srdjan Nesic
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The Role of CO2 on Carbon Steel Corrosion
CORROSION 2015, 2015Abstract CO2 corrosion is a complex process and a large number of variables are involved, such as: pH, temperature, chloride concentration, fugacity and system total pressure. This work presents electrochemical impedance spectroscopy and gravimetric results of tests carried out at pH 4, which was controlled within the whole experiment ...
Tatiana das Chagas Almeida +3 more
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