..., and a required cathodic protection current, I as shown in Equation ( 1 ). C = Where Ccp = CP system electrochemical capacity (A-y) Ireq = cathodic protection current required (Amps) L = required service life (Years) (1) Once electrochemical capacity was obtained, a required anode mass is calculated based...

... from X65 steel pipe material (API 5L specified grade). Table 1 contains the chemical composition of the X65 material. The RCE specimens were 15 mm in diameter by 6.4 mm in height, which equated to an exposed surface area of 3 cm2. The specimens were freshly polished to a 600-grit finish...

.... Hydrogen Trapping Theory: Reversible trapping theory underpins the proposed expression for stress-enhanced hydrogen concentration at the crack tip (CH ) within the FPZ, as shown in Equation (1).3-6 CHs = CL exp æ èç s HVH + RT EB ö ø÷ (1) The equation illustrates that the concentration of hydrogen...

... materials and corrosion corrosion inhibition oilfield chemistry chloride concentration flowline corrosion nacl pipeline corrosion conductivity salt extraction h2s management production chemistry concentration extraction efficiency ion concentration calculation equation doped panel Paper...

... rate was derived using a pseudo steady state hypothesis which could simulate laboratory corrosion data reported in the literature. The rate equation was also validated by experimental corrosion tests conducted in a high temperature flow-through reactors for carbon steel using a model oil solution...

...Paper No. C2024-20986 MARCH 3-7, 2024 | NEW ORLEANS, LOUISIANA Derivation of a Modified Stern-Geary Linear Polarization Equation. Application to seawater corrosion and inhibitor evaluation. Jose Vera, Ken Evans DNV USA Conchita Mendez ExxonMobil Technology and Engineering USA ABSTRACT...

... and incorporates non-ideal thermodynamics (i.e., gas fugacity effects) to describe the aqueous solution chemistry. Electrochemical corrosion equations are compared with experimental data to support validation. This model could serve as a useful tool that complements qualification testing and help validate the PLP...

.... This length is simply referred to as the "Le" entrance length. "Le" of the specific conditions shown in Table 2 can roughly be estimated from Equation (1) 26, where D is the diameter of the elbow. A further study 27 in the literature also emphasized that the "Le" for extremely turbulent flows becomes...

... via below equation: 7 = × × × × (1) Whereas FCM = Complexity factor (1.0 for non-complex) FIC = Insulation condition adjustment factor (1.0 for average condition) FINS = Insulation type adjustment factor (1.25 for mineral wool) FEQ = Equipment/ design factor (1.0 for the moisture egress, 2.0...

... of 10 greater). Recently, some authors of this work proposed to modify the existing CC formulation in order to include the effect of hydrogen pressure on the FCGR 9, which is especially relevant in the low- K regime 10, 11. The proposed pressure correction, here reported in Equation 1, introduces...

... mV/s. The Tafel value ( a and c) for these experiments were determined by Tafel s extrapolation method. The corrosion current Icorr was calculated considering the Stern-Geary assumption (Equation 1) [25]. = 1 2.303 (Equation 1) The corrosion rate was calculated using the following Equation [26...

... respectively. Between these two points, reaction kinetic equations are used to predict speciation through the boundary, accounting for species transport via a modified form of the Nernst-Planck equation (Equation 1). = , + , ) (1) where is the flux of species is the molecular diffusion coefficient...

... method. The corrosion current Icorr was calculated considering the Stern-Geary assumption (Equation 1) [18]. = 1 2.303 (1) The corrosion rate was calculated using the following Equation [19]: = (2) Where CR is corrosion rate in mm/y; K: conversion factor (3,270 mm.g/A.cm. y); EW: equivalent weight...

... models within the field of computational fluid dynamics (CFD), it is now possible to derive these variables numerically. h2s management turbulent diffusivity riser corrosion well integrity production chemistry corrosion management subsurface corrosion materials and corrosion equation...

... turnaround. The tube was numbered, and the fire side was duly marked for reference. On visual inspection, a reddish colored layer was observed as shown in Figure1. geologist materials and corrosion specimen riser corrosion flowline corrosion geology equation api 530 pipeline corrosion life...

... corrosion inhibition equation bicarbonate prediction engineer titration procedure co 2 production chemistry materials and corrosion concentration geochemical characterization brine calculation acid concentration bicarbonate concentration molar concentration corrosion engineer Paper...

.... artificial intelligence subsurface corrosion riser corrosion pipeline corrosion flowline corrosion cfd simulation thickness equation butler-volmer equation well integrity materials and corrosion reaction software correlation agreement prediction comparison tcfc simulation co 2...

.... equation well integrity corrosion management production chemistry united states government materials and corrosion metals & mining corrosion inhibition riser corrosion oilfield chemistry flowline corrosion h2s management subsurface corrosion pipeline corrosion interface publication...

... ABSTRACT In this work, a novel analysis approach using an artificial intelligence (AI) framework that automatically helps identify the drivers of a formulation from lab measurements was showcased. This AI framework builds and optimizes models in the form of physics-based equations from small...

... hvdc electrode polarization equation effectiveness Paper No. 18819 MARCH 19-23, 2023 | DENVER, COLORADO Integrated Corrosion Analysis Software and its Application to dc Corrosion Analysis F.Y. Li, M.Sc. P. Dawalibi, Eng., Ph.D. J. Cheng, M.Sc Y. Jiang, Ph.D. Safe Engineering Services...