As its commitment to always help students to develop their skill related to the field of expertise, Education and Workshop Division of SPE ITB SC hosted a weekly guest lecture in September 27, 2013. This Friday’s guest lecture was attended by 60 people while the location was in Total Handil Room of Petroleum Engineering Department ITB. Titling “Corrosion Mitigation: Some Challenges in Oil and Gas Industry“, the guest lecture was delivered by Mr. Deden Supriyatman
Mr. Deden Supriyatman graduated from Institut Teknologi Bandung (ITB) and having an MBA degree. Holding certificates in Process, Production Fond and Project Management from Formation Industrie – Institut Francais du Petrole (IFP), France, he trained at TOTAL fillials in Middle East and North Sea. He is National Association of Corrosion Engineers (NACE) International certified as “Corrosion Technologist #21319”. With over 29 years of working experiences, he has been involved with Total Professeurs Associes (TPA – its headquarter is in Paris) such as giving lectures in prestigious universities in Indonesia and Abu Dhabi, not exhaustive on technological risk analysis, asset integrity, corrosion, production chemicals, and flow assurances as well.
In the great occasion of giving students the guest lecture, Mr. Deden first explained about what the corrosion actually was. “Corrosion is a natural phenomenon occuring in the environment. It is generally due to the electrochemical reaction between iron and oxidant with electrolyte presence,” he said. Due to the relative high costs of oil and gas production (especially in the U.S.A), maintenance costs had to be kept to a minimum level. Emphasising on controlling internal corrosion with corrosion inhibitors was a great option. The causes of corrosion in oil and gas production were vary. They were water (e.g. liquid and water in contact with the metal), corrosive species (e.g. dissolved CO2, dissolved H2S, acidity, oxygen, chlorine), time (e.g. ranging from 1 day up to 10 years), and favorable parameters (e.g. bacteria, flow effects, sand, salts, service conditions, stress, and temperature). However, solution proposed regarding on corrosion problem in the form of corrosion mitigation was indeed needed. There were 6 methods can be applied, which were design, physical treatment, chemical treatment, coating, cathodic protection, and good material selection.
In addition, Mr. Deden explained the “Artificial Neural Networks for Corrosion Rate Prediction in Gas Pipeline”. This material was previously presented by him at Asian Pasific Oil and Gas Conference and Exhibition (APOGCE) 2012 in Perth, Australia. Artificial Neural Networks (ANN) applications scoped science and medicine, manufacturing, marketing and sales, finace, banking and insurance, security, and engineering. ANN model development included training phase, corrosion model, and prediction. In conclusion he said that ANN could be used to predict the corrosion rate on gas pipeline. Then, The model would have capability of developing the high level of accuracy if the model was supported by sufficient data from fields. Next, sensitivity analyses were performed for analyzing the variables having the greatest effect on the response. Lastly, further studies might involve flow regime, velocity, pH, Ca, Fe, and organic acetic contents should be conducted.
We hope that any corrosion engineer right now can face the challenge to make petroleum industries better.
By : Lambang Tejo