.... Critical velocity was defined as “minimum required liquid and gas flow rates to keep particles constantly moving in the pipe”. Critical velocity is defined in a way to make sure all particles are continuously moving along the pipe and as a result prevents forming a stationary bed of sand. The experimental...

... a new empirical model. Previous models for liquid loading are independent of the liquid amount in a gas stream. Once gas velocity is higher than calculated critical velocity, no liquid loading exists. This paper points out that, in addition to gas velocity, liquid amount (liquid holdup) in a gas stream...

... intervention intervención de pozos petroleros well intervention Discharge decline curve injection intermittent gas injection production enhancement tubing pressure psig ftp petroleum engineer enhanced recovery critical velocity backside auto spe 120494 compressco field service gas injection...

... Abstract Critical velocity calculations in the form of charts or simple equations are frequently used by field personnel to evaluate a gas well's flowing conditions to determine if the well is experiencing liquid loading problems. Literature detailing the critical velocity necessary to keep...

... inhibiting or stopping gas production. The cause of diminished liquid-lifting ability is the decline of liquid droplet production as gas flow rates pass below the Turner-Hubbard-Dukler critical velocity. In this research, a variety of devices were tested for enhancing droplet production and liquid lifting...

... ABSTRACT By observing the relationship between Reynolds number and the critical velocity of a fluid, it is noticed that they respond inversely as the flow properties of a fluid are changed. As the fluid properties increase and the fluid becomes more viscous, the critical velocity increases...

... permeability data. Experimental data generated on rocks with fine particulates, indicate that mechanically induced damage can occur if the displacing fluid velocity, increased to overcome capillary end effect, exceeds the critical velocity for mobilization of resident mineral fines. Chemically induced damage...

... to brine damage, a critical velocity below which permeability damage did not occur was repeatedly established. The occurrence of a critical velocity, along with other observations, indicate that the primary damage mechanism is fines migration. waterflooding upstream oil & gas symposium...