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Kermani B.,KeyTech
NACE - International Corrosion Conference Series | Year: 2014

The majority of internal corrosion damages in hydrocarbon production systems are associated with sweet corrosion and the limited performance of carbon and low alloy steels (C-steels) to this type of corrosion threat. Whilst past efforts to studying CO2 corrosion have largely been in relation to addressing system chemistry/operating conditions, less attention has been directed at metallurgical parameters. This paper focuses on both alloy chemistry and microstructure in addressing CO2 corrosion of C-steels. In this, a systematic analysis of corrosion damages combining operational and experimental data has been carried out in an attempt to elucidate influential steel properties that affect corrosion behavior. Steel performance has been characterized through determination of uncombined/free Cr and V and the influence of other alloying elements together with microstructural features. The results are exceptional and unique, pointing towards key variables influencing corrosion behavior of C-steels in CO2-containing fluids. © 2014 by NACE International.

Kermani B.,KeyTech | Daguerre F.,Tenaris Group
NACE - International Corrosion Conference Series | Year: 2010

With the growing environmental constraints, global warming and public awareness, there is an increasing incentive to reduce carbon emissions. One approach to achieving this is through CO 2 capture and storage (CCS). Once captured and compressed, CO 2 must be transported to a long term storage site. In principle, transmission may be accomplished by pipelines, tankers, trains, trucks, compressed gas cylinders, as CO 2 hydrate, or as solid dry ice. However, only pipeline and tanker transmission are reasonable options for the large quantities of CO 2 associated with power stations, other industry activities or hydrocarbon production. This paper combines current status of materials and corrosion options for CO 2 transmission, outlining any technology gaps that may exist. In addition, a simple guideline is presented enabling materials optimization for CO 2 transmission in CCS. ©2010 by NACE International.

Gunaltun Y.,Total S.A. | Kermani B.,KeyTech | Samosir T.,TOTAL E and P Indonesie | Pramitadewi M.-E.,TOTAL E and P Indonesie | Situmorang C.,TOTAL E and P Indonesie
NACE - International Corrosion Conference Series | Year: 2011

During the recent economical growth period the lead time of stainless steel tubular reached in excess of a year. This was considered inadequate particularly for the completion of wells in some marginal reservoirs with short expected production capacities and life times. A systematic and comprehensive study was therefore, undertaken to select and optimize suitable materials for the completion of lower part of a number of gas producing wells. Key challenges included economy and appropriateness to allow a fitness for service choice of tubing material. The study covered two parallel elements including (i) corrosivity assessment and (ii) placement of downhole coupons and tubing string in the cemented part of the wells. This aided materials optimization by developing application domain diagrams (ADDs) for candidate materials including carbon steel (C-steel) and low carbon 3%Cr steels. Operational experience was captured through analysis of downhole corrosion coupons after six months of exposure to evaluate the in-situ system corrosivity. In addition, a limited number of wells were completed with 3 % Cr and carbon steel. After one year of production they were inspected by caliper runs showing encouraging results which led to additional wells being completed with C-steel. This paper summarizes the outcome of different studies and inspection and demonstrates the significance of correct materials selection approach and implementation of corrosion management strategy in meeting economy and appropriateness to enable fitness for service. © 2011 by NACE International.

Kermani B.,KeyTech
Materials Performance | Year: 2014

NACE has been instrumental in encouraging positive impacts of corrosion by outlining losses, costs, failures, leaks, and degradation. There have been exceptional innovations in developing new generations of corrosion-resistant alloys, corrosion inhibitors, and coating systems with outstanding performances. Their discipline enables a more efficient use of resources, thus reducing the impact on climate change; and is also instrumental in the development and implementation of carbon capture, transportation, and storage technologies that can help reverse the effect of carbon dioxide emissions. By working together with city planners and other engineering disciplines, corrosion mitigation can give rise to new, more sustainable ways of urban living. With increasing pressure on water and food resources, NACE professionals have a key role in ensuring that clean water is available to users and not lost to leaks or failures.

Kermani B.,KeyTech | Chevrot T.,Total S.A.
NACE - International Corrosion Conference Series | Year: 2014

Pipeline integrity is key to maintaining operational success, safety and security and minimizing harm to the environment. Corrosion is a dominant contributory factor to failures, leaks and integrity threats in pipelines. Therefore, its optimum control within an integrity management framework is paramount for the cost effective design of facilities and ensuring continued, uninterrupted and safe operations within the expected design life. This paper summarizes major elements of a recent recommended practice (RP) on Pipeline Corrosion Management (PCM) published by the European Federation of Corrosion (EFC). The RP goes into details on a methodical approach to carrying out PCM. It is a step change in the approach, methodology and necessary elements in ensuring integrity of pipelines in the oil and gas industry enabling improved safety, security and minimizing the impact on the environment. © 2014 by NACE International.

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