... ABSTRACT Gas hydrate formation in oil and gas pipelines may cause flow assurance problems, especially in deep water subsea tiebacks. Agglomeration of hydrates may form plugs, thereby halting production. In the last decades, the hydrate control philosophy has shift from "hydrate avoidance...

... Operating within the hydrate formation zone using low-dosage hydrate inhibitors (LDHI) is an emerging technical solution that may allow reducing capital investment and operating costs. Risks and efficacy of these additives is commonly assessed prior to field application; however, this process...

... ABSTRACT Gas hydrates are a concern for the oil and gas industry, since they can be formed in production lines and disrupt flow. Different techniques can be applied to assure that the flow will not be disrupted by hydrate formation. Recently, the use of dispersant additives known as anti...

...An analysis of the coupled effects of mass transfer, slug flow hydrodynamics and heat transfer during hydrate formation using a quasi-stationary mechanistic model C L Bassani, F A A Barbuto, R E M Morales Multiphase Flow Research Center, Federal University of Technology Paraná, Brasil A K Sum...

... (J-T) effect; however, water condensation and temperature drop is more severe during the winter. Condensation of water within the pipeline leads to the requirement of an effective corrosion and hydrate control measurements. Mitigating hydrates formation in pipelines has been a challenge...

... Abstract CSMFlow is a unique tool that provides a framework to model the inter-coupling of multiphase flow and hydrates. The utility of this tool is demonstrated in the modeling of hydrate formation in gas/water systems by studying the multiphase flow behavior in terms of flow regime...

... Abstract There are many ways to prevent hydrate formation in production flowline and riser systems. The most common and traditionally trusted means of prevention is a combination of thermal insulation during production and depressurization with chemical injection and inert fluid flushing...

... of hydrate formation on slug flow in gas/water systems. NOMENCLATURE A Cross sectional area (m2) As Surface area between water and gas (m2) d Pipe diameter (m) Cp Heat capacity (J/kg/K) fL Liquid friction factor g Acceleration due to gravity (m/s2) h Enthalpy (J/kg) H Hold-up of phase fraction) k1 Intrinsic...

... in these areas that have been accumulated over decades of research. While still a work in progress, significant advances have been made in describing the hydrate formation in oil-dominated, water-dominated, and gas-dominated systems. One of the end goals of our effort is to develop the knowledge and tools...

... prevention. agglomerate size velocity profile flow assurance plug growth rate upstream oil & gas turner model line 2 hydrate multiphase 7 equation discharge line hydrate formation suspension line 1 bhr group 2010 hydrate particle production rate deposition consumption rate...