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The papers in this month's issue describe an optimization method for long-distance gas-transmission pipelines, a potential solution to handle produced water from subsea wells. the driving forces in paraffin deposition, and a novel method to verify leaks in a sulfur-recovery unit condenser.

Valuation of the enhanced flexibility offered by platform-based development solutions and sequential subsea solution is difficult. This leads to the question: Are development solutions being selected without taking sufficient account of option values?

As natural gas pipeline systems have grown larger and more complex, the importance of optimization of design and operation of pipelines has increased. This paper examines the optimization issue for the Egyptian gas transmission pipeline network.

The effects of turbulence/shear and thermal driving force on wax-deposition characteristics were experimentally studied using a waxy crude oil from the Gulf of Mexico.

Technology is evolving to meet the challenges to automate water separation and purification in deepwater for environmentally safe discharge at the seabed. To solve these problems the best available solutions must be selected and the technology gaps must be identified and closed.

Tube leaks present in a water-cooled sulfur recovery unit (SRU) condenser can lead to a variety of process issues, including corrosion and the oxidative formation of acidic species. This work devised a novel method to verify such leaks within a SRU condenser.

A new methodology for oil/water horizontal pipe separator (HPS) design and performance prediction is developed. Separator diameter is determined on the basis of oil/water flow-pattern prediction. A batch separator model is adopted and modified to predict the separator length for desired quality.

Papers this month cover numerical modeling of a horizontal pipe separator, stress fatigue cracking in pipelines due to accoustic vibration, application of traffic design to pipeline systems, and optimization of separator operating pressures.

In this study, software that is capable of modeling fully transient multiphase flow in wellbore and pipeline has been used to characterize the fluid-hammer effects of well shut-in and startup on the coupled subsurface and surface systems.

A closer look at the design and construction of Statoil’s subsea gas compression systems in the Åsgard and Gullfaks fields, the first of their kind in the oil and gas industry.