pressure gradient

And it was seen from the wind tunnel tests that the wind pressure gradient had a nonlinear relationship with the wind velocity.

While with the increase of the circulating amount of the system, negative pressure gradient and slip velocity in the standpipe increase too.

The method can be used to calculate the the end time of effect of wellbore storage with start-up pressure gradient considered.

The atmosphere pressure gradient is an inverse measure of the spacing of the isobars on a weather map.

The results of calculation prove that the flow of coating in conical shaped die can create pressure gradient of coating in die.

To determine the formation pressure, formation temperature, flowing pressure and flowing pressure gradient.

The results showed that mobility and start-up pressure gradient are the main reasons of non-linear seepage flow effect.

fractured gas reservoir with low permeability; gas-water biphase; nonlinear flow; threshold pressure gradient; numerical simulation.

The relationship between permeability and the threshold pressure gradient is studied by the threshold pressure gradient experiment.

Analysis the negative pressure control value VS pressure gradient distribution and factors on pressure gradient for the district air flow.

The stall angle decreases with reduction of the ground clearance, due to higher adverse pressure gradient.

The dual porosity model with a quadric pressure gradient term in fracture phase is presented in the paper.

Tarim oilfield has features of deeply buried reservoir, high formation pressure coefficient and high pressure gradient of stratum broken.

Approaches of controlling the wall pressure gradient through MWOR and the area ratio is then investigated respectively.

The error between the model with quadratic pressure gradient term and the model without quadratic pressure gradient term may amount to 20%.

The pressure gradient and velocity gradient of the extrudate in the central area were small, and the extrudate flowed . . .

Under the same conditions, the maximum production pressure increases with decreasing threshold pressure gradient and deformation factor.

Controlling the maximum of pressure gradient in the process of pre-loading is an effective measure to reduce pressure impact.

Jamin effect, the open and close of microfracture, starting pressure gradient in reservoir result in high initial water cut.

Meantime, the pressure gradient region, which producing the non-linear seepage flow, was calculated.

Mesoscale Nonhydrostatic and Hydrostatic Pressure Gradient Forces Theory.

as pressure gradient is smaller and the velocity profile becomes flatter, it means the width of flow nucleus increases.

Study on the Calculation of Pressure Gradient and Void Fraction in Horizontal Gas Liquid . . .

With permeability increasing, starting pressure gradient of oil and water phase decrease, and the decreasing degree becomes weak. 4.

There should be pressure difference display device when there is a pressure gradient.

Underpressure system developed in the Shiwu depression of Songliao basin with measured formation pressure gradient ranging between 0.

The pressure gradient increased with the decrease of gap sizes.

Impact of start-up pressure gradient, mobility and microscopic pore structure on seepage flow has been researched. 4.

The formation pressure gradient which is higher than that of fresh water or brine column is called abnormally high pressure.

Calculation of Responding Time of Waterflooding in Low Permeability Sandstone Reservoir Through Introducing Start-up Pressure Gradient

The Ejection and Sweep in the Wall Region of a Turbulent Boundary Layer Under Adverse Pressure Gradient

one-step low-pressure gradient. Concentrations of the amino acids were determined with a fixed-wavelength fluorescence

determining the air pressure gradient relation between the sections of the grate bed of the grate;

The distortion at the inlet exit is quite high due to the strong lateral pressure gradient in the isolator;

Single-phase seepage test demonstrates that there exits kick-off pressure gradient in Honghu reservoir with low permeability core;

The Errors of Pressure Gradient Force in High-Resolution Meso-Scale Model with Terrain-Following Coordinate and Its Revised Scheme

Starting pressure gradient calculation and its application in conventional heavy oil reservoir

Physical simulation and numerical simulation of ultra-low permeability reservoir in consideration of starting pressure gradient

Interference offset in DOA estimation with an pressure-gradient vector hydrophone

On the use of a deep pressure gradient constraint for estimating the steady state ocean circulation from hydrographic data

Characteristics of Transient Pressure with Threshold Pressure Gradient and Injection- Production Ratio

Numerical simulation of pinnate horizontal multilateral well for coal-bed gas development in consideration of start-up pressure gradient

Free surface computation considering hydrodynamic pressure gradient

Pressure and Pressure Gradient in an Axisymmetric Rigid Vessel With Stenosis

Experiments on Computing Pressure Gradient Force of Error Subtraction Scheme in Yunnan Mesoscale Numerical Model

Experimental Study of Gas Starting Pressure Gradient

Study on Effect of the Grid Condition of Numerical Simulation of Adverse Pressure Gradient Turbulence Field in Pipe System

Transient Pressure of Percolation Through One Dimension Porous Media with Threshold Pressure Gradient

Pressure Gradient Model of Two-phase Flow in Horizontal Section of Snake-bending Wells

Unsteady seepage model for low permeability reservoir with threshold pressure gradient

Tendency of Starting Pressure Gradient Changes in Heterogeneous Reservoirs

Experimental Study on Influence Factors of Start-up Pressure Gradient of Permeability Reservoir Rocks

An experimental study on starting pressure gradient of fluids flow in low permeability sandstone porous media

Prediction of threshold pressure gradient using artificial neural network

Application of Radial Basic Function Neural Network on the Prediction of Starting Pressure Gradient

under the condition of bound water, threshold pressure gradient of natural core of various permeability are determined by indoor experiment;

Determination and Regression of Overburden Pressure Gradient

Optimizing experiment condition of core starting pressure gradient

Gas-phase flow characteristics of gas-solid two-phase flow in standpipe under negative pressure gradient

Influence of an uniform axial magnetic field on the pressure gradient in arc

Methods to Confirm the Starting Pressure Gradient for Low Permeability Reservoir Non-Darcy Flow

The starting pressure gradient increases with the decrement of oil saturation;

Fluidization Behaviors of Gas-Solid Two-phase Flow in the Standpipe under Negative Pressure Gradient

A new solution and application of starting pressure gradient in ultra-low permeability reservoir

Threshold pressure gradient of low permeability sandstone

Instability Analysis on Gas-Solid Two-phase Flow in the Standpipe under Negative Pressure Gradient

Start-up pressure gradient of tight gas reservoirs in Daniudi gas field and its application method

Experiment on starting pressure gradient of oil and water two phases flow in low permeability core

Research on Pressure Gradient in Horizontal Two-phase Gas-liquid Flows with Low Liquid Loading

Pressure Gradient Model for Variable Mass Fluid Flow in Horizontal Wellbore

Predicting pressure gradient of fluid in oil tubing on the condition of continuous gas-lift

The Effect of Magnetic Fields on Low Frequency Oscillating Natural Convection With Pressure Gradient

Influence of Casing Exhausting Rate on the Annular Pressure Gradient in the Rod Pumped Well

Spatial gain analysis of pressure gradient hydrophone based on general signal processing principles

Study on the Start-up Pressure Gradient for the Low Velocity Non-Darcy Flow

An Improvement of Darcy's Law With Threshold Pressure Gradient

Analysis of Boundary Layer Stability for Non-Parallic Flow with Pressure Gradient

Direction estimation based on pressure-gradient vector hydrophone

Multi-Signal Distinguish Based on Pressure-Gradient Vector Transducer

Study on Fracture Pressure Gradient in the North Saertu Development Area

Study on Classification of Low-Permealility Sandstone Reservoirs Based on the Starting Pressure Gradient

The study and analysis of starting pressure gradient in low permeability gas reservoirs