Dredging, Trenching and Rock Placement Works for the Sakhalin-1 Project, Russian Far East
Dredging, Trenching and Rock Placement Works for the Sakhalin-1 Project, Russian Far East

Persevering in remote eastern Russia, with its severe climate and lack of infrastructure, dredgers dug the trenches and laid the pipelines which will provide billions of barrels of gas and oil.

Landfall and Shore Approach of the New Langeled Pipeline at Easington, UK
Landfall and Shore Approach of the New Langeled Pipeline at Easington, UK

To meet the growing energy requirements of the United Kingdom, a decision was made to lay a new offshore pipeline from Norway's gas-rich fields to the eastern coast of the UK.

Montpellier Sea Outfall: Europe's Longest Marine PE Pipe Project
Montpellier Sea Outfall: Europe’s Longest Marine PE Pipe Project

The increasing population in the Montpellier, France environment required a new waste water treatment plan. Studies indicated that for maximum safety the sea outfall should be placed 11 km off the coast - an enormous length to lay an outfall pipe.

Pipe Size Effect on Hydraulic Transport of Jumoonjin Sand Experiments in a Dredging Test Loop
Pipe Size Effect on Hydraulic Transport of Jumoonjin Sand Experiments in a Dredging Test Loop

The diameter of a slurry pipeline is an important factor in a design and an operation of a pipeline and pump system connected with a dredger. However, the effect of pipe diameter on the slurry flow behaviour (frictional head losses, specific energy consumption, deposition limit velocity) is not

Eemszinker: Safely Trench Dredging a Live Gas Line
Eemszinker: Safely Trench Dredging a Live Gas Line

Norwegian gas from the Ekofisk Field lands at Delfzijl, in the north of The Netherlands. The Eems crossing links Phillips Petroleum's gas cleaning and drying plant at Rysumer Nacken, on the German bank, to Delfzijl and the Dutch national gas grid.

Numerical Simulation of the Development of Density Waves in a Long Pipeline and the Dynamic System B
Numerical Simulation of the Development of Density Waves in a Long Pipeline and the Dynamic System B

Slurry transport is used in dredging and mining to transport solid/liquid mixtures over a long distance and very frequently multiple pumps are utilised.

Pre-Trenching, Pre-Sweeping and Backfilling for the 36" Offshore Pipeline Project in Taiwan
Pre-Trenching, Pre-Sweeping and Backfilling for the 36″ Offshore Pipeline Project in Taiwan

A trailing suction hopper dredger equipped with a deep-dredging installation proved to be extremely versatile and saved the pipelaying project from large delays.

Effect of Various Terminal Velocity Equations on the Result of Friction Loss Calculation
Effect of Various Terminal Velocity Equations on the Result of Friction Loss Calculation

Winner of the 2000 IADC Annual Award, this study illustrates the considerable differences in friction loss values, used for calculation in pipeline systems, yielded by different equations.