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Picture for The 1000´S Of Microbial Genera Found In Argentina´S O&G Fields: Their Impact On Microbially Induced Corrosion And Integrity Of Facilities
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Picture for The API RP 14E Erosional Velocity Equation: Origin Application Misuse Limitation and Alternative
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The API RP 14E Erosional Velocity Equation: Origin Application Misuse Limitation and Alternative

Product Number: 51319-13206-SG
Author: Fazlollah Madani Sani
Publication Date: 2019
$20.00

Erosion of mild steel lines and equipment during the production of hydrocarbons from underground reservoirs is a complex and not fully quantitatively understood phenomenon becoming even more intricate when electrochemical corrosion is included. Oil and gas companies have always tried to account for this phenomenon with simple models. Over the last 40 years the American Petroleum Institute recommended practice 14E (API RP 14E) erosional velocity equation has been used by many operators to estimate safe production velocities in erosive-corrosive service. The widespread use of API RP 14E is a result of it being simple to apply and requiring little in the way of inputs. However there is very little scientific backing for this approach. The API RP 14E erosional velocity equation is often quoted to be overly conservative and to unjustifiably restrict the production rate or overestimate required pipe sizes.The present workprovides a review of literature on the origin of the API RP 14E erosional velocity equation its limitations misuses applications and known alternatives. This review suggests that a proper erosion model would provide a better description for the vast majority of conditions in oil and gas production systems to determine the safe operating velocity while maintaining a maximum production capacity and using cheaper materials or smaller diameter pipelines. However these models are more complex and are therefore not as widely applied. Overall there are currently no simple and readily available alternative formulae for calculating the erosional velocity and resort in many cases is a semi-empirical approach that includes operational experience.Keywords:erosion API RP 14E erosional velocity erosive-corrosive service operational experience

Picture for The Application of Ceramic Coatings to Extend Radiant Tube Life in Process Heaters and Improve Operational Efficiency with Cost Benefit Analysis
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The Application of Ceramic Coatings to Extend Radiant Tube Life in Process Heaters and Improve Operational Efficiency with Cost Benefit Analysis

Product Number: MPWT19-14438
Author: John Bacon, Johannes Poth and Iain Hall
Publication Date: 2019
$0.00

Ceramic coatings technologies are an effective surface engineering tool in the management of heat flux on metal surfaces. Thin ceramic coatings can be employed to either increase or decrease heat transfer on metal surfaces by modulation of emissivity. While this characteristic is relatively easily impressed on a surface, long term coating sustainability and oxidation protection of the underlying metal is not readily achieved. This presentation provides a technical data-based introduction to the function, performance, testing, and installation of ceramic coatings on two key pieces of refining equipment.
• Process heaters are critical production assets for the downstream hydrocarbon processing industries such as refineries and petrochemical plants. The efficient operation of these units is vital to plant productivity since they consume large amounts of energy to provide the required heat for the process. They may also bottleneck feed throughout due to heat transfer limits. Scaling and hot spots in the radiant tube section can cause local coking and premature material failure. Improvements in operating efficiency and reliability can yield significant cost benefits and a fast return on investment. Additionally, radiant transfer properties of existing refractory systems can be improved, increasing process efficiencies. Know ceramic performance metrics can be used to predictively model performance improvement. • Flare tips routinely suffer from material overheat, creep and oxidation. Ceramic systems are employed to mitigate these, through the installation of both low emissivity and low conductive heat transfer materials. This paper and case study discusses how different ceramic systems can be used in the management of heat transfer, the protection of surfaces from corrosion, and provide insight into the less intuitive mode by which heat transfer can be promoted.