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The article discusses research which examined the characteristics of offshore floating liquid natural gas (FLNG) for the deepwater gas field in South China Sea. Topics discussed include an analysis of the FLNG research project in the liquefaction process design and engineering, comparison of types of liquefaction processes for compression power and recommendation for propane pre-cooling and dual nitrogen expansion sub-cooling (C3-DN2).

The article discusses a study on the use of OLGA dynamic multiphase flow software to simulate pigging transient flow that is characteristic of a dual flowlines system in a deepwater gas field. Topics addressed include a decrease in minimum stable flow rate due to low central platform (CEP) pressure, improved pipeline flow assurance by reducing CEP pressure, and reducing total liquid volume. Also mentioned are efficient measures to handle liquid and pipeline systems' reliance on pigging.

The article discusses a study where two kinds of glass beads having different mean diameters were used as sediments in which methane hydrate was formed. Using a volumetric method the porosities of the glass beads were determined. Estimates of hydrate saturation were made and relative permeability measured at different stages of methane hydrate formation. The results indicated that the formation of methane hydrate in bead packs leads to a decline of permeability. Proof was obtained of how the methane hydrate was not coated on the bead surfaces.

The article discusses a study that examined CO2 hydrate formation and dissociation in porous medium using magnetic resonance imaging (MRI). It discusses the use of a vessel to meet the demands of high pressure. The study showed that hydrate formation and dissociation could be visualized by MRI data. It detailed the quantification of the CO2 hydrate formation rate using MRI data.

The article highlights the use of the LNG-Floating Production Storage and Offloading unit (LNG-FPSO) in offshore oil drilling, which offer greater savings making it a popular technique in the world. The design by the authors of the LNG offshore production features a moveable floating production platform, which met the requirements of having a simple process, easy installment and safe movements that does not affect performance. The authors conclude that a consideration of the offshore environment should be made before the implementation of the LNG-FPSO.

The article describes a study which investigated the quantitative characteristics of wax crystals. It cites the testing of the wax crystal structures of two crude oils during their paraffin precipitation through the use of the image analysis methods. The wax crystal dimensions of the crude oils were obtained based on fractal theory, while the viscosity-temperature properties were determined through rheological technique.

The article presents a numerical simulation of liquid sloshing of liquefied natural gas (LNG) in offshore LNG tanks. Sloshing is defined as a movement occurring in a limited space and is related to liquid viscosity, container arrangement and movement, and filling rate. The basic assumptions on LNG sloshing are cited, along with equations that can explain LNG sloshing. In addition, the article discusses the analysis of the effect of initial velocity, viscosity and baffles in LNG sloshing.