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Chemical treatment of reservoir fluids within the wellbore is essential for the control of associated corrosion and scale deposition. The Wafra Risk Assessment was developed with the Likelihood of Failure (LoF) based on historical corrosion well workover failures and the Consequence of Failure (CoF) directly tied to oil daily oil production.
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This paper will detail the environmental cracking test program and results when Alloy UNS S42028 (For applications such as high collapse liners sections in high pressure high temperature (HPHT) reservoirs) was exposed to medium density bromide based clear brine fluids at a temperature of 150oC (302oF).
Based on tubulars retrieved from Halfdan producing wells with low CO2 and H2S content an under deposit corrosion mechanism has been suggested involving multiple parameters including scale buildup microbiologically influenced corrosion (MIC) and the formation of green rust.
The current paper presents a study on corrosivity of produced water and make-up water on UNS G10180 carbon steel in simulated in-situ thermal operations.
This paper is presented as a practical guide to identifying the causes of corrosion in different sections of gas sweetening trains and ways to control and minimize corrosion in amine plants.
Variables that influence extent of vaporization of injected wash water & subsequent impact on minimizing the risk of corrosion. Consequences of liquid maldistribution in reactor effluent air coolers (REACs). Selecting between single and multiple injection points.
The sour model had been previously developed to predict localized internal pitting corrosion of carbon steel. This model included the effects of carbon dioxide (CO2), crude oil, temperature, pressure, flow, sulfur, sulfates, bicarbonates, chlorides and microbiologically influenced corrosion (MIC). The paper discusses field use, merits, precautions and parameterization in using the model.
Thermodynamic scale prediction and laboratorial kinetic study are two of the major scale risk assessment methods applied in the oil and gas industry.
Scale inhibitor squeeze treatments have been applied for many decades to control inorganic scales in onshore/offshore production wells. A series of coreflood tests were conducted with reservoir carbonate cores, This paper presents field results and laboratory evaluation data for the application of corrosion inhibitors via the squeeze process.
Oil sands production has unique challenges in terms of materials selection and long-term performance. This paper provides a general overview of various oil sands recovery and upgrading processes, and outlines areas where polymers and composites could be effectively utilized. Case studies.
This work demonstrates that the pretreatment of carbon steel and 9Cr alloy with model acids yields iron oxide scales with different morphology and chemical composition as determined by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).
To examine the effect of Tungsten (W) on localized corrosion of 2 superduplex stainless steels (SDSS)- high & low-W. Both plain samples (pitting corrosion) and samples with artificial crevices (crevice corrosion) were exposed. Tests in 3.50-wt% NaCl solution or natural seawater. T= 30 to 90°C.