The phrase 'sand rate' is not correct or usable in written English.
You could use the phrase 'interest rate' if you are referring to the rate of interest someone pays or receives on a loan. For example: The bank offered me a competitive interest rate on the loan.
Data collected during the experiments included time-dependent variation of pore pressure within the pay zone, flowrate, sanding rate, and tracking of the enlargement of the cavity around the well.
The response of the steels to the same contact pressure, rolling speed, sliding/rolling ratio and sand feed rate was evaluated in terms of wear rate, strain hardening and surface and subsurface damage.
By measuring the fracture conductivity, sand production rate, and the size of the particles produced, we investigated the effect of fluid viscosity, flow rate, median grain diameter of formation sand, and proppant concentration on sand control and conductivity.
Papamichos developed the relation between sand production rate under multiphase flow and water breakthrough (Papamichos 2010).
The turbulent characteristics would cause a significant discrepancy between field observation and simulation of sand transport rate.
The damage variable "porosity change" is computed from the dilatant plastic volumetric strain, and the sand production rate and volume are calculated.
In cold-high environments, sand transport rate increases with increasing wind velocity, but decreases exponentially with increasing height in the windstream.
However, researchers found recently that the effect of turbulent characteristics of near surface wind in real atmospheric boundary layers on the sand transport rate was obvious.
Furthermore, the prediction formula of sand transport rate above straw checkerboard was given based on the ratio of near-surface wind speed and the incoming wind speed.
Other parameters, including drawdown, in-situ stress, and perforation orientation, are shown to have considerable influence on sand production rate and are discussed in this paper.
