... ABSTRACT After the first oil crisis in 1973 the gas/oil industry shifted its focus on producing oil and gas outside the Middle East. This triggered offshore activities with the need to transport oil and gas simultaneously in pipelines over great distances to shore. At that moment a lot had...

... geothermal pipelines off support, and runaway hydrate plugs have caused fatalities. The flow – structure interaction is therefore of interest to study and to incorporate in dynamic simulators. Several cases of dynamic slug flow-structure interactions have been studied in small scale laboratory. A two way...

... ABSTRACT Design and operation of gas-condensate pipelines presents many challenges to the flow assurance engineer and pipeline operator. Important challenges are accumulation during low production and the removal of liquid during a ramp-up operation. Previously the connection between...

... ABSTRACT Predictions from multiple industrial simulators of multiphase pipeline flow are compared to field data for a hilly terrain, gas-condensate pipeline with three-phase flow. Field conditions studied include quasi-steady flow and ramp-up slugging. Some models predict excessive terrain...

... pressures, high Gas-Oil Ratios (GOR) along with various flow assurance concerns represent major challenges for the transport of crude oils from the reservoirs to the platforms through production pipelines in the pre-salt fields (4,5). Furthermore, the produced crudes and gases present unusual high CO 2...

... A finite volume discretization of the incompressible two-fluid model in four-equation form is proposed for simulating roll waves appearing in multiphase pipelines. The new formulation has two important advantages compared to existing roll wave simulators: (i) it is conservative by construction...

... ABSTRACT As production takes place in the petroleum industry, impurities are produced along with oil and gas. Sand is a common impurity associated with production. If sand is present, it is desirable to have continuous flow of even small concentrations of sand through the pipeline to avoid...

...% of the internal pipe diameter. The knowledge about the existence and the vertical extent of the stationary bed and its longevity can reduce the risk of pipeline blockages as part of an optimised mineral process control strategy. Introduction During recent mine trials with the SBD, it was discovered...

... and operation of the pipe. This work will evaluate three methods of calculating the ground heat transfer coefficient of a buried pipe under different external pipeline configurations. A traditional equation to calculate the outer heat transfer coefficient, widely used by flow simulation software, proved...

... Abstract Flow modelling and corrosion risk assessment are used to study a challenging multiphase pipeline, where the main focus is the identification and prioritisation of critical locations for direct inspection. Using an internal corrosion direct assessment method, we conduct flow modelling...

... pipelines. Effect of flow development length: Many models/correlations neglect the effect of flow development length on slug frequencies. The experimental study has revealed that this is an important parameter. Introduction Slug flow is a very common flow pattern in pipelines and wellbores...

... case studies based on real projects; a subsea separation and a subsea compression study. compression pressure drop upstream oil & gas compressor production model ipm tool flow rate reservoir surveillance composition wet gas pipeline production monitoring production control subsea...

... Introduction The combination of declining reservoir pressure and increasing water production in aging fields along with certain common pipeline/riser geometries can create or exacerbate riser slugging. The severity of riser slugging typically becomes worse with increasing riser height and may...

... components which are "heavy" and "light". The heavy component has a low vapour pressure, high boiling point, and the light component has a high vapour pressure and low boiling temperature. The model proposed in [1] was applicable to black oil. Here the model is extended to wet gas pipelines and to production...

... ABSTRACT: At constant inflow conditions, large-amplitude pressure and flow rate fluctuations may occur in a pipeline-riser system operating at relatively low liquid and gas flow rates. This periodic flow instability has been referred to as severe slugging. In this experimental study, three...