Products tagged with 'nitrite'

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02274 EFFECTIVENESS OF CORROSION INHIBITORS IN RETARDING PROPAGATION OF LOCALISED CORROSION

Product Number: 51300-02274-SG

ISBN: 02274 2002 CP

Author: A. Turnbull, D. Coleman, A.J. Griffiths, P.E. Francis, and L. Orkney

Publication Date: 2002

$20.00

In many service applications excursions in solution chemistry, temporary loss of inhibitor, or transient increases in temperature may give rise to localised corrosion. To test the return of inhibition when the loss is remedied, the use of an artificial pit has been investigated using simulations of cooling water and of of oil production formation water.

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04322 Darrell Hartwick, Don Hutchinson, and Mylene Langevin, Buckman Laboratories

Product Number: 51300-04322-SG

ISBN: 04322 2004 cp

Author: Darrell Hartwick, Don Hutchinson, and Mylene Langevin, Buckman Laboratories

Publication Date: 2004

$20.00

Traditionally, closed system treatment programs have involved adding corrosion inhibitor and
periodically testing for the residual. To be effective, these treatment programs must also
include cleaning. This paper will discuss the various aspects that should be evaluated as part of a closed system treatment program.

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A Novel Method for the Enhanced Kill of Sulfate Reducing Microorganisms

Product Number: 51320-14412-SG

Author: Gary E. Jenneman

Publication Date: 2020

$20.00

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.

Products tagged with 'nitrite'

02274 EFFECTIVENESS OF CORROSION INHIBITORS IN RETARDING PROPAGATION OF LOCALISED CORROSION

04322 Darrell Hartwick, Don Hutchinson, and Mylene Langevin, Buckman Laboratories

A Novel Method for the Enhanced Kill of Sulfate Reducing Microorganisms

Association for Materials Protection and Performance