... ABSTRACT Glycol systems are widely used in gas processing plants for the removal of contaminants such as moisture from the gas. Since the majority of the piping and vessels in these plants are fabricated from carbon steel, there is a high potential for corrosion. This paper provides a brief...

... chemistry texas 77084 Publication Division consideration permission prediction Houston manuscript evaluation glycol Modeling & Simulation Upstream Oil & Gas corrosion rate condensation rate tlc corrosion rate flow model 1 Evaluation of Top-of-Line Corrosion Model for Multiphase Oil...

... 2 S corrosion prediction model developed by the authors' organization. The TLC model determines the top of the line corrosion rate of carbon steel based on water chemistry and film-wise condensation rate. The effect of various glycols, such as Monoethylene Glycol (MEG), Diethylene glycol (DEG...

... Abstract In wet gas pipelines, Monoethylene glycol (MEG) is a widely used hydrate inhibitor which has been shown to decrease the corrosion rate of carbon steel in CO2 environments. In a top of the line corrosion (TLC) situation, MEG is also known to affect both water condensation and TLC...

... parallel trains of glycol dehydration units to remove the moisture before being exported. Recurring failures due to severe corrosion were reported in some of the heat exchangers in carbon steel material in all the trains of the dehydration units in two of the Gathering Centers. When further investigated...

... ABSTRACT Monoethylene glycol (MEG) is injected in the pipelines to prevent hydrate formation, and subsequent pipeline blockage. Recent investigations indicated that presence of MEG could impede CO 2 corrosion of carbon steel, although many aspects remain unknown. In the current study...

... ABSTRACT Carbon steel pipeline heaters use 40% triethylene glycol (TEG) in the temperature range 220 to 400°F (104 °C to 204 °C) to aid separation of water from crude oil in the arctic. Specified pH range of the TEG is 8-10, but recent KOH additions produced pH from 12 to 14 in some...

... ABSTRACT Results from joint industry projects (JIP) on corrosion in sour wet gas pipelines with hydrate preventers (glycols) are presented and discussed. Experiments were run in flow loops and glass cell equipment with 0.1-5 bar CO 2 INTRODUCTION Many wet gas carbon steel pipelines worldwide...

... not only in aqueous systems but also in environments that contain nonaqueous additives such as methanol or mono-, di-, and triethylene glycols. The performance of the model has been analyzed for various solids including calcium sulfate, barium sulfate, calcium carbonate and magnesium carbonate...

... Subsurface Corrosion materials and corrosion Upstream Oil & Gas Pipeline Corrosion well integrity dehydration system amine Corrosion Problem lean rich exchanger amine plant Hydrogen Sulfide reboiler flowline corrosion riser corrosion carbon dioxide glycol dehydration system...

... are solely those of the author(s) and are not necessarily endorsed by the Association. Printed in the U.S.A. DEVELOPMENT AND FIELD DEPLOYMENT OF A NOVEL ACIDIC TRIETHYLENE GLYCOL BUFFER CHEMICAL FOR BRINGING GAS DEHYDRATORS BACK INTO SPECIFICATION Jonathan J. Wylde (Clariant Oil Services) Alistair W. Duthie...

... water in liquid and vapor phase, contaminants such as chlorides will also be absorbed especially by glycol fluid if it used as dehydration system. Furthermore, the glycol will dissolve other gas contaminants including carbon dioxide, hydrogen sulfide, and some heavy hydrocarbons. Gas dehydration...

... ABSTRACT Ethylene glycol is often used worldwide in both plants and pipelines to prevent hydrate formation. Worldwide, there are several offshore wet gas pipelines that transport gas through large distances, under hydrate forming conditions with large concentrations of acid gas. Several...

... POSSIBLE GLYCOL CORROSION IN NOMINALLY DRY GAS PIPELINES John S. Smart, III John Smart Consulting Engineers Houston, TX 77079 Tel 281 493 5946 email [email protected] Randy Roberts HCR Coastal Chemical POB 81577 Lafayette, LA 70598-1577 Tel 337 333 1522 email [email protected]...

... such as the presence of mono-ethylene glycol (MEG) and the use of pH control were studied in a 4 diameter flow loop. Two sets of experiments were conducted; one at 70ºC, high CO2 partial pressure and a critical condensation rate and another one at 80ºC, low CO2 partial pressure and a high condensation rate. Weight...

... ABSTRACT Monoethylene glycol (MEG) is often used to prevent formation of solid gas-hydrates in wet natural gas pipelines when low operating temperatures are expected (e.g. sealines). Glycols have a slightly inhibiting effect on CO2 corrosion, however, corrosion control methods such as pH...

... was evacuated in a carbon steel pipeline to the Frigg Field for further processing. In order to protect the pipeline against internal corrosion, injection of a pH stabilizer mixed with glycol was implemented. Formation water arrived early in the production lifetime and a switch from pH stabilizer...

... glycol corrosion mechanism sediment side stream monitor oxygen coupon INTERNAL CORROSION DIRECT MEASUREMENT ENHANCES PIPELINE INTEGRITY John S. Smart John Smart Consulting Engineers 14210 Carolcrest Drive Houston, TX 77079 Thomas Pickthall Enhanceco, Inc P. O. Box 747 Stafford, TX 77497 SUMMARY...

... system treatment program. Keywords: cleaning, closed system, filtration, glycol, molybdate, nitrite. INTRODUCTION Hot and chilled (closed) water systems are found in many applications, ranging from space heating in commercial and industrial sites, to residential applications, as well as providing cooling...

... Pipeline Corrosion flowline corrosion well integrity corrosion inhibitor riser corrosion Subsurface Corrosion corrosion rate corrosion inhibitor development MEG Brine composition glycol materials and corrosion Upstream Oil & Gas platform nace international corrosion conference...