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Initial investigations described at Corrosion 2011. This paper reports on development of a micelle detection instrument. Criteria for interpreting the presence of micelles will be reported and results of a simulated field study to investigate the link between inhibitor micelle presence and corrosion rate. Together with results from real field samples, this data will be presented as development of a new tool for field analysis of brines
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Assessment was performed on the use of polymer-based materials or liners for large solids particle slurry applications. The study was conducted in a pilot-scale horizontal slurry flow loop using two different solids: sand and rocks.
This benchmarking study involved both the application of biocides to reduce biofilm formation on clean carbon steel and the application of biocide to established biofilm.
Slurry pipeline systems are used for the extraction of bitumen from mined ore in the oil sands industry in Alberta, Canada. Most of these extraction processes are open to atmosphere resulting in significant air ingress and entrainment within the slurry pipelines used to transport mined ore and tailings. In addition, for short hydrotransport slurry pipelines, the slurry is conditioned by air to create bubbles coated with a bitumen film called “air-sacks”.
MIC is a major threat to oil pipelines because it reduces the service life of pipelines and can potentially leads to catatrophes. Microbial communities commonly associated with pipeline corrosion include sulfate reducing bacteria (SRB), acid producing bacteria (APB), acetogenic bacteria and methanogens. In a field environment, SRB, APB and other microbes often live in a synergistic biofilm consortium. Sessile SRB are often the main culprit of MIC. They can utilize sulfate as the terminal electron acceptor and various carbon sources and elemental iron as electron donors. Corrosive APB biofilms are also a contributing factor in an acidic environment because they release H+ which is an oxidant.
Corrosion rates in model oil sands coarse tailing slurries were investigated using a linear polarization resistance probe. Pilot-scale horizontal slurry flow loop of either unimodal (sand) or bimodal (sand and rocks) solid particles distribution mixed with municipal water.