... the pressure gradient or holdup characteristics significantly when compared to foam flow without nozzle. However, the foam stability and quality were affected by the nozzle, depending upon the position where the foamer was injected (either before or after the nozzle). production control Reservoir...

.../water flow in a 3-in ID pipe has been investigated. Pressure gradient and average liquid holdup were measured. Visual observations with high and low speed cameras have been recorded to identify flow patterns and liquid film behavior for each test point. Pipe inclination effects on critical gas velocity...

... factor experiment friction reducer Upstream Oil & Gas high velocity diameter hydraulic fracturing concentration resistance factor pressure gradient microfracture society of petroleum engineers shear rate complex reservoir wettability slickwater gas shale apparent viscosity spe...

... at well deviations of 0°, 15° and 30° from vertical. A total of 131 tests have been carried out. Differential pressure gradient and liquid holdup were measured. Flow pattern was observed and videos were captured with a high speed video system. Critical gas velocity which defines the threshold for liquid...

... Abstract The effect of pipe diameter on liquid loading initiation has been experimentally investigated using 2-in and 4-in pipe diameters. Two-phase flow parameters such as pressure gradient and liquid holdup were measured. Flow characteristics were determined by visual observation using a high...

.... In this paper, a new integrated spread-erosion numerical model was developed, in which sand is produced from disturbed zone, and its dynamic performance depends on the spreading of wormhole which is determined by the pressure gradient between wormhole tips and reservoir. Also sand is fallen off from sand wall...

..., stability and the ability to entrain liquids becomes available. production logging mechanistic model production data pressure gradient production control Upstream Oil & Gas viscosity foam flow surfactant surface tension equation production monitoring bubble rise velocity pressure drop...

... in oil and gas production and transportation. During pipeline design and simulation, experimental data are usually unavailable to calibrate against correlations and models. In this situation, it is difficult to determine which correlation or model to use in predicting pressure gradient in pipelines...

... 106647 correlation ECD pressure gradient tapered tool joint fluid loss control Introduction Good ECD control is always important in regular and underbalanced drilling operations. Management of ECD has been a key factor in the successful drilling of abnormally high-pressure wells around...

... in concentric annuli. reservoir surveillance correlation concentration drilling fluid property pressure gradient diameter drilling fluid selection and formulation generalized reynolds number flow rate production control production monitoring modeling & simulation drilling fluid formulation...

... evaluation permeability upstream oil & gas gradient gas velocity production monitoring reservoir surveillance pressure gradient equation static liquid column gilbert turner liquid column production logging productivity gas well performance drillstem/well testing tech inflow performance...

... production monitoring lubricant flow rate friction factor friction pressure coiled tubing operations drilling fluid selection and formulation mgal xanthan 3 frictional pressure gradient frictional pressure loss pressure gradient drilling solid suspension drilling fluid property production...

..., followed by a slower further rise in mobility starting at the core inlet. New coreflood results indicate that pressure gradient ∇P during the first process is insensitive to a shut-in period after foam injection but depends weakly on liquid flow rate. A small fall in gas saturation accounts for the first...

... annuli. The method is valid in any flow regime and can be used to determine whether a non-Newtonian flow is laminar, transitional, or turbulent. An analytical procedure is developed for computing frictional pressure gradients in all three flow regimes. The analysis also quantifies how flow transition...

... emulsification separation and treating fraction 0 complex reservoir pressure drop production chemistry bitumen heavy oil upstream oil & gas oil-in-water emulsion fraction oilfield chemistry field trial enhanced recovery pressure gradient reduction oil sand waterflooding drag reduction...

... Abstract A mechanistic model has been developed for the prediction of pressure gradients in pumping wells. The proposed model takes into consideration recent developments in two-phase flow through an annulus configuration, is based on the concept of zero net liquid flow, and rigorously...

... to increase abruptly when the flowing oil-water mixture reached the inversion point where the external phase inverted from water to oil. Two pressure-gradient prediction models are presented; one for stratified, and the other for homogeneously dispersed oil-water flows. Comparison between model predictions...

... value at and near initial conditions and an increase to a constant and greater value at high to moderate pressure gradients. A final low compressibility value after a normal pressure gradient is again attained. These variable compressibility phenomena may be readily explained by applying known...