Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Search
Filters
Close

Online Conference Paper

View as
Sort by
Display per page
Picture for Micellization And Inhibition Efficiency
Available for download

Micellization And Inhibition Efficiency

Product Number: 51321-16872-SG
Author: Yi He; Shuai Ren; Zined Belarbi; Xi Wang; David Young; Marc Singer; Maalek Mohamed-Said
Publication Date: 2021
$20.00
Picture for Microbial Corrosion Diagnosis Using Molecular Microbiology Methods: Case Studies
Available for download

Microbial Corrosion Diagnosis Using Molecular Microbiology Methods: Case Studies

Product Number: MPWT19-14427
Author: Xiangyang Zhu, Abdullah H. Wadei
Publication Date: 2019
$0.00

Microbiologically influenced corrosion (MIC) is one of the leading causes of equipment and pipeline failure in oil and gas industries. Cost-effective MIC management requires routine monitoring of microbial activities, periodic assessment of microbial risks in various operational systems, and accurate diagnosis of MIC failure. Traditionally, MIC diagnosis has been dependent on cultivation-based methods by inoculating liquid samples containing live bacteria into selective growth media, followed by incubation at a certain temperature for a pre-determined period of time. The conventional culturing techniques have been reported to severely underestimate the size of the microbial populations related to metal corrosion, among many inherited weaknesses of these techniques. As a result, accurate diagnosis of MIC failure is challenging because the conventional techniques often fail to provide a critical piece of evidence required for a firm diagnosis, i.e., the presence of corrosion-causing microorganisms in the failed metal samples. In this paper, we described applications of molecular microbiology methods in diagnosing MIC in a crude oil pipeline and crude processing facility. Molecular microbial analyses have provided a solid piece of evidence to firmly diagnose the MIC in a crude oil flow line, a stagnant bypass spool, and a global valve bypass pipe. The presence of a high number of corrosion-related microorganisms in upstream pipelines poses a high risk to downstream crude processing facilities for microbial contamination and corrosion failure in these facilities. An effective MIC management program should include routine monitoring of microbial activities and risk assessment, and effective mitigation program, such as scraping and biocide treatments.

Picture for Microbiologically Influenced Corrosion by General Aerobic and Anaerobic Bacteria in Oil & Gas Separators
Available for download

Microbiologically Influenced Corrosion by General Aerobic and Anaerobic Bacteria in Oil & Gas Separators

Product Number: 51320-14365-SG
Author: Amer Jarragh, Saleh Al-Sulaiman, Yousef Khuraibut, Hasan Bu Taleb, Dr. Ali Moosavi
Publication Date: 2020
$20.00

By far, the microbiological species most associated with corrosion has been Sulphate-Reducing Bacteria (SRB).  Majority of Microbiologically Influenced Corrosion (MIC) research has focused on the activities of this type of bacteria. One of the primary reasons for this has been the presence of iron sulfides in corrosion products associated with MIC. SRB reduce sulfates to sulfides, which then react with iron and steel. However, an accepted fact is that MIC is also caused by the action of the biofilm produced by bacteria, in a similar way to under-deposit corrosion. 

The primary method used to prevent MIC in the oil and gas industry is by use of biocides. The criteria used for selection of biocides is often their proficiency to kill SRB. The danger with this is that one can neglect the ability of other bacteria frequently found in oil and gas environment, such as general aerobes and general anaerobes to cause corrosion by biofilm production. This became evident when severe general & pitting corrosion was observed in two oil and gas separators in one of the facilities in Kuwait Oil Company (KOC), where SRB levels were zero but significant numbers of sessile and planktonic general aerobes and general anaerobes were found to be present in the process. 

Using microbiological and chemical analysis, the mechanism of this type of MIC, specially the relationship between the quantity of various biofilm-forming bacteria and nature and magnitude of corrosion has been studied and the findings are presented in this paper. 

Picture for Microstructural And Corrosion Studies Of Super-Duplex Stainless Steels Produced Via Additive Manufacturing
Available for download

Microstructural And Corrosion Studies Of Super-Duplex Stainless Steels Produced Via Additive Manufacturing

Product Number: 51321-16990-SG
Author: Nuria Fuertes; Nikhil Dixit; Sara Munktell; Anna Delblanc; Peter Harlin; James Shipley; Fredrik Falkenberg; Rachel Pettersson
Publication Date: 2021
$20.00