... structures. From this model, the mechanical natural frequencies occurring in the range of operating speeds were determined and compared to the natural frequencies measured in the field for model validation. The model was adjusted until it was able to accurately predict the first few natural frequencies...

... tremendously. A well-established definition for RTO is that "it is a process of measure-calculate-control cycle at a frequency, which maintains the system's optimal operating conditions within the time-constant constraints of the system". Based on this definition it is possible to conclude that the concept...

.... recovery curve enhanced recovery imbibition experiment saturation porous media viscosity ultrasonic energy permeability water saturation frequency initial water saturation visualization experiment ultrasound oil recovery ultrasonic radiation upstream oil & gas experiment capillary...

... pig lift system artificial lift system pig-launching frequency lift-ga rate conventional gas lift pig-launching period gas injection wellbore production string frequency gas-liquid mixture production monitoring slug unit gas lift production rate flow model reservoir surveillance...

... dissolved in mixtures of toluene and heptane. The aqueous phase is distilled water. Elasticity is measured as a function of the frequency of the oscillations, the asphaltene concentration, and the solvent composition. Emulsion stability is assessed for model emulsions prepared from the same phases that were...

... power law relationship with frequency. This relationship holds true whether the frequencies are calculated using traditional frequency analysis or wavelet analysis. Introduction It has been known for several decades that turbulent burnerflames produce noise. Moreover, turbulent flames, though...

... with different representations in different sources. source dataset source database information data quality dataset token analysis method data quality problem analysis result duplicate record field-matching algorithm artificial intelligence database substitute huapache frequency data...

... frequency packets that are localized in the time domain. Thus, wavelets are well suited for analyzing nonstationary data. It can smooth the basic signals and keep and even enhance of details. So it provides a multiresolution framework for data representation. Wavelet transform is now used in a wide variety...

... Abstract Microwave treatment has successfully treated slop oils and sludges of light and medium crude. This paper reports its extension to slops derived from heavy crude oil. Scientific and industrial treatments using microwaves are usually limited to frequencies of 2450 MHz and 915 MHz...

... are caused by excessive stress. However, dynamic stress is determined by geometric factors and by vibration amplitude, so it is important to limit vibration amplitude. Dynamic stiffness varies with frequency as illustrated in Figure 4 and is influenced by all the mechanical details, including piping details...

... to flow 3 . Straley et al. later found that to minimize the errors in estimating permeability, the T 2c value which separates the primary pores from the vugs was found to be 750 ms 5 . secondary porosity porous medium porosity distribution frequency reservoir relaxation voxel porosity ct...

... for the coalescence rate as a function of ultrasonic frequency, oil phase concentration, and other variables. These models are theoretically sound and easy to use. A comparison between mathematical model predictions and experimental results provided excellent agreement. It was observed that, for the cases studied...

... that cannot be analyzed with conventional visual methods. In this work, the acoustic resonance method is used to detect liquid-vapor and liquid-solid phase transitions from reservoir fluids. The expected trend in the resonance frequency is established from acoustic and thermodynamic theory as well...