This study reports the results of laboratory investigations in pressurized high-temperature carbon-rich environments simulating operations in syngas production and root cause failure analysis and laboratory analysis simulations in refinery platformer operations. The results rank a variety of stainless steels and Ni alloys.
Hydrogen sulfide gas produced by sulfate reducing microorganisms (SRM) creates significant challenges in the petroleum industry including corrosion concerns, product devaluation, and significant health risks. Biocides and inhibitors are often employed to control these detrimental activities. Recently, co-injection of a synergistic blend of biocides and the SRM inhibitor, nitrite, was proposed as an effective means to control biogenic sulfide production, however, the method only addressed inhibition of SRM activity and not kill. Inhibition can have the undesirable consequence of allowing SRM to resume full activity once the inhibitor is depleted, thus requiring the continuous input of expensive chemicals to maintain control. On the other hand, biocides are designed to reduce SRM concentrations thus reducing the need to add additional chemical until the SRM population re-establishes. Lab results, using an SRM field enrichment, demonstrated that the sequential injection of nitrite inhibitor followed by glutaraldehyde led to an 8-log reduction in SRM while only a 2-log reduction when co-injecting these chemicals at equivalent concentrations. It is proposed that pretreatment with the inhibitor, nitrite, or other respiratory inhibitor, results in a reduction in cellular ATP of the SRM creating a sublethal stress response allowing for their enhanced kill upon subsequent biocide addition.
The “CorrCompilation: Oilfield Production Chemicals” series covers production, selection, performance evaluation, application, monitoring, and optimization of oilfield chemicals. The oilfield chemicals presented are corrosion inhibitors, biocides, scale inhibitors, and drag reducers. The editor, Joseph Itodo Emmanuel, believes it is a “must-have reference book” for corrosion engineers in the field, technicians, and field operation supervisors due to its broad spectrum.
He suggests the compilation could be used for a university-level engineering or scientific course on oilfield chemicals or tailored training to enhance the technical knowledge of field personnel on oilfield chemical application and management.
Since this CorrCompilation series consists of 90 NACE technical papers or articles, it is published in three volumes.
Volume 1: Development and Selection
Volume 2: Performance Evaluation and Application
Volume 3: Monitoring and Optimization
Each volume contains current research findings, field treatment practices, best practices, and scientific and engineering concepts.
2019 NACE e-book