... Pa.s), as the viscous dissipation occurring in flows with high viscosity liquids is large enough to prevent generation of waves by a sheltering mechanism. The classic linear Kelvin-Helmholtz stability theory has been widely used to predict the transition from stratified to non-stratified flow (i.e...

.... This effect became more crucial as the mixing velocity was reduced. The experimental results are compared with low viscosity data from Kumara el al. (2) and the commercial flow simulator OLGA. NOMENCLATURE Symbols gravity H local/in-situ water fraction (aka. holdup) SM stratified flow with mixing...

... a transition to stratified flow when the plate height closely matched the in situ water height at low water cuts. Introduction The flow of oil and water in pipes is commonly encountered in a number of industrial processes. These systems are particularly relevant to the oil industry in which achieving...

.... grid size wave amplitude flow rate wave velocity amplitude experiment multiphase 17 usl 0 probe stratified flow production control gas flow rate bhr group 2015 reservoir surveillance olga simulation production logging surge wave upstream oil & gas peak amplitude production...

... upstream oil & gas stratified flow production logging experiment production monitoring correlation pipe friction factor prediction reservoir surveillance bhr group 2013 slug flow multiphase flow liquid viscosity fraction pressure drop holdup production control viscosity oil turbulent...

... properties (especially gas density). This is essential in order to reduce uncertainty associated with fluid properties and pipeline sizes that differ greatly from available experimental data. For gas condensate systems, the main research topics have been 3D pre-integrated three-phase stratified flow models...

... only 50% was achieved in the 19.0 mm pipes. Stratified flow extended to higher superficial oil velocities in the smaller pipe diameter in comparison with larger one. Annular flow was found to disappear from both pipe after polymer addition. Finally, variation of master solution concentration did...

... The oil-water stratified flow pattern is common in the petroleum industry, especially in offshore directional wells and pipelines. Using the experimental rig of the Thermal-Fluids Engineering laboratory of the Engineering School of Sao Carlos at University of Sao Paulo, stratified and semi...

... in this study: 296 © BHR Group 2011 Multiphase 15 Slug flow: Flows with slugs of the liquid phase of noticeable length periodically filling the entire pipe cross-section. Stratified: Flows with the gas and oil phases separated, and with a wavy or smooth interface. Flows with large waves on the liquid-gas...

... the subject of extensive analyses of the Kelvin-Helmholtz type to investigate its ability to simulate wave growth (e.g. Barnea and Taitel, [4 Results of these analyses show clearly that for certain flow conditions, perturbations occurring in stratified flow are amplified in time resulting in the formation...

...-horizontal inclination angles. The profiles of void in the liquid layer are examined for a range of gas densities and superficial gas and liquid velocities giving stratified flow. We expect that the results presented in this paper will provide invaluable information for those researchers who seek accurate...

... stratified flow multiphase production technology 14 experiment phase fraction concentration profile model prediction denote pipe production logging production control upstream oil & gas fraction oil-water flow reservoir surveillance water cut equation interface Oil-water flow...

... interface pipeline multiphase flow production monitoring stratified flow model experimental data equation closure flow model flow regime upstream oil & gas artificial intelligence slug flow production logging reservoir surveillance correlation multiphase production technology...

... be checked accordingly. For stratified flow to non-stratified flow transition Omurlu-Ozbayoglu method (OOM) (18), is as follows ( ) 1 2 1 l g glg lr g l g Ahv dAd dh > (3) If the gas velocity, vg is greater than the term at right hand side of equation 3 the flow pattern...

... angle production monitoring stratified flow olga flow rate reservoir surveillance simulation production logging LedaFlow 1D: Simulation results with multiphase gas/condensate and oil/gas field data A Goldszal, J I Monsen Total E&P NORGE AS, Norway T J Danielson, K M Bansal ConocoPhillips...

... ABSTRACT A new theoretical model has been developed for determining flow regime transitions in two-phase gas-liquid flow in horizontal pipes. The theoretical model provides a physical explanation for the development of the perturbed interface of the stratified flow into a roll wave or slug...

... ABSTRACT Severe slugging is reported from some field operations, when an increase in the production rate leads to a transition from steady stratified flow to slug flow in the pipeline. The slugs can be longer than anticipated for normal hydrodynamic slugging and the flow transients can...

... characteristics of horizontal wavy stratified two-phase flow. The flow is modelled using the volume of fluid (VOF) multiphase model, which allows for the prediction of the shape of the gas-liquid interface. Even though stratified flow is probably the simplest two-phase flow regime, only few studies of stratified...