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Through a range of experiments the authors demonstrate that small amount of H2S can be beneficial in reducing corrosion in 3% Cr steel.

The high level of dissolved iron commonly present in the Marcellus waters of Pennsylvania and West Virginia adversely affects the ability of scale inhibitor to inhibit calcium carbonate scale. This study tests two new products under a range of conditions.

The three papers in this issue address safe design of facilities, use of the chemical acrolein in an offshore environment, and the integration of reservoir and pipeline modeling to capture the variations in reservoir-flow dynamics with changes in the surface-network operating conditions.

This paper describes a gas-hydrate model for oil-dominated systems, which can be used for the design and optimization of facilities focusing on the prevention, management, and remediation of hydrates in flowlines.

Offshore production systems can be impacted negatively by numerous problems attributed to bacterial activity, associated hydrogen sulfide and biogenic iron sulfides, and mercaptan production. Acrolein provides a distinctive all-in-one chemical solution to assist in resolving these problems.

This paper reviews the key areas for facility designers and engineers to include when designing facilities to ensure safe facilities. Use and incorporation of the principles outlined in this paper should enable engineers and designers to build safe facilities that reduce the risk of major incidents.

This paper highlights the issues and challenges surrounding pipeline trenching and burial in ice-gouge environments. The current state of practice is discussed along with the technology gaps that need to be addressed.

The papers in this month's issue describe a method for optimizing separator design, impact of other chemicals on effectiveness of scale inhibitors, impact of ice movement on trenched pipelines, and use of gelled fluid to remove debris in pipelines.

This paper presents the results of tests conducted to design a fast-breaking gelled fluid for a debris-removal operation in a long, large-diameter subsea pipeline in the Asia Pacific region. where traditional pigging was not an option.

Semoga and Kaji fields experienced reservoir souring and suffered a history of calcium-carbonate (CaCO3) -scale cases before a proper scale-inhibition program was implemented. Problems with a free water knockout discovered continued scale issues, leading to investigation of the reasons.