... electrical resistance. In both DC (direct current) and AC (alternating current) circuits, the impedance of a resistor can be calculated by (inline-equation). Resistors always have constant impedance which are independent of frequency of AC voltage in AC circuits. Capacitors are different from resistors...

..., respectively. Pipeline Corrosion Subsurface Corrosion materials and corrosion riser corrosion flowline corrosion Production Chemistry Aerospace & Defense frequency texas 77084 Upstream Oil & Gas H2S management impedance permission coating system coating Corrosion Inhibition...

..., in the absence of condensable hydrocarbons, decanethiol showed excellent persistency, filming behavior and superior mitigation of TLC. 7 flowline corrosion riser corrosion corrosion inhibitor materials and corrosion Upstream Oil & Gas Thickness resistance Subsurface Corrosion frequency...

... voltage was 120 Hz frequency, and that very little of the AC voltage was related to the fundamental 60 Hz powerline frequency. This paper discusses the testing performed to confirm the source of the elevated AC current densities and quantify the associated corrosion risk. The mitigation strategy employed...

... every three years to make an informed decision adjust for frequency and interval of flushing. INTRODUCTION Frequent failures were observed in dead legs associated to piping systems at the oil and natural gas liquids (NGL) units operating in wet sour service environment. The non-HIC resistant carbon...

... ABSTRACT This work presents laboratory testing performed to assess the fatigue response of wellhead extension joint welds for high-pressure, deepwater prospects subjected to low-frequency cyclic loading. The wellhead extension joints are exposed to seawater and are cathodically protected...

... management Production Chemistry Upstream Oil & Gas frequency integrity assessment permission replacement oilfield chemistry well integrity Corrosion Management dynamic segment pipeline manuscript operator smart pig assessment texas 77084 economic analysis Replacement Strategy defect...

... and uncertainty assessment frequency Publication Division Houston failure mode planning horizon texas 77084 practical cost-benefit analysis external corrosion probability Practical Cost-Benefit Analysis For Pipeline Corrosion Management Tony Alfano, PE DNV GL (USA, Inc) 5777 Frantz Rd Dublin, OH...

... to inhibitor leaching studies. However it remains unclear if chromate epoxy based primer can inhibit corrosion fatigue under atmospheric corrosion conditions. The protection provided by corrosion inhibitors under fatigue conditions can be affected by loading conditions (??, frequency) but it is also likely...

... flowline corrosion Subsurface Corrosion frequency metals & mining riser corrosion thermal cycling materials and corrosion Upstream Oil & Gas Publication Division strain distribution corrosion rate artificial physiological solution permission nickel titanium alloy failure...

... frequency investigation H2S management Houston texas 77084 steel 28cr riser corrosion Corrosion Management permission corrosion resistant alloy Pipeline Corrosion Production Chemistry corrosion property NaCl solution high-phosphorus ni-p coating Upstream Oil & Gas Publication Division...

... Pipeline Corrosion Subsurface Corrosion H2S management Corrosion Inhibition oilfield chemistry well integrity materials and corrosion riser corrosion frequency Publication Division mitigation resistance Zinc passive film solution resistance Corrosion Management corrosion rate...

... are able to perform valid EN measurements. This paper is aimed at guiding users of the EN technique by providing the minimum knowledge for EN measurements, including the necessary validation of the signals measured at different sampling frequencies by calculation of their power spectral densities. Two...

... and corrosion flowline corrosion Artificial Intelligence frequency passive film well integrity passive film property Upstream Oil & Gas Publication Division Pipeline Corrosion riser corrosion carbon steel Houston OCP capacitance specimen manuscript texas 77084 permission tc-128 steel...

... yields geometry-induced frequency dispersion that confounds interpretation. A proof of concept was established for using indirect impedance to detect corrosion in post-tensioned tendons. Bench-top experiments were performed to show that the indirect impedance was sensitive to the properties of the steel...

... Corrosion Inhibition Upstream Oil & Gas integral intensity oilfield chemistry Corrosion Management concentration raman line intensity real time system Production Chemistry frequency Raman Spectroscopy line intensity application permission manuscript texas 77084 hydrocarbon...

... 5777 Frantz Road Dublin, OH - 43017 USA ABSTRACT Fatigue and fracture of line pipe steels in a sour inhibited environment is presented. Fatigue crack growth rate (FCGR) was investigated as a function of frequency at several different K values at a pH of 3.5 and 0.21psia (0.00144MPa) H2S. The role...

... ABSTRACT Sour fatigue crack growth rate (FCGR) behavior of seamless welded line pipe steel was investigated in a range of conditions. Frequency scan FCGR tests were performed at a fixed stress intensity factor range (?K) to determine the effect of frequency in two different sour environments...

... International, Publications Division, 15835 Park Ten Place, Houston, Texas 77084. The material presented and the views expressed in this paper are solely those of the author(s) and are not necessarily endorsed by the Association. frequency (and magnitude) of the field-variation depends on several parameters...

... are commonplace and has resulted in an increased focus on the integrity of the data associated with coating quality testing. The following is an assessment of the necessity and effectiveness of oscilloscope data logging capability as well as a variable frequency power supply for the collection of coating...