The present paper concerns with studying experimentally the mixture of gas-solid (air-coal) flows in a Venturi meter in an attempt to prepare a metering tool for suspended gas-solid mixture flows. The different parameters that affect the gas-solid mixture flows metering process were determined and analyzed. In order to conduct the study, an experimental setup was designed and manufactured in the laboratory of the thermal power engineering in Menoufia University. Furthermore, seven nonstandard (long-throated) geometrical Venturi models with different diameters ratios and throat lengths were selected guided by previous literature and manufactured to be used in the present experimental work. Additionally, the experimental study was performed on the selected models to determine the effect of different Venturi meter geometric models on pressure drop sensitivity, pressure recovery, and to seek a viable method for determining loading ratio for suspended gas-solid flows in the Venturi. The results showed that the coal loading ratio affected greatly and positively both the pressure drop and recovery ratios of air-coal mixture flows in the Venturi. However, inlet and exit geometries of the Venturi had smaller effect on the pressure drop and recovery ratios than the coal loading ratio and particles diameter range. Additionally, decreasing the diameters ratio and increasing the throat length improved the Venturi pressure drop sensitivity to solids loading. Finally, the experimental results helped greatly to analyze the different parameters concerning the air-coal mixture flows in a Venturi meter and provided an insight on the feasibility of using the Venturi as a metering tool for suspended gas-solid mixture flows in a future continuation of the present work.

Perforating a gas well efficiently requires applying technological advances to carry out a safe operation without compromising well productivity. In this paper, is discussed the application of a pre- job plan methodology called perforating well on paper to the perforation operation of SITRA 3-4. This methodology involved tension simulation, perforating gun and charge selection, conveyance hardware optimization, best underbalance value selection, as well as modeling of gun shock, gun movement and reservoir behavior when shooting multiple zones with different pressure regimes. Simulation methodology was performed as well real time during the perforating job to optimize static and flowing underbalance without compromising the safety of the operation and maximizing production gains.

Due to the urgent need for electricity sources in Egypt, this investigation is an attempt to prepare a metering tool for measuring the flow rate of the suspended gas-solid mixture flows in coal thermal power stations. One of the simplest methods for accurately measuring the flow rate of pulverized coal in the thermal power stations is the venturi meter. In the present work, different geometrical models have been designed and applied for measuring air-coal mixture flow rate, considering the effect of different operational parameters on the pressure sensitivity, pressure recovery and performance of the venturi models. The measurements showed the effects of these parameters on the pressure drop and the pressure distribution. New charts have been deduced from the experimental data for seven non-standard venturi models that shows different effects of particle size, loading ratio and throat length of venturi. From the experimental results a new correlation for two-phase flow discharge coefficient is deduced in the present study. The comparison between the experimental and correlation has been done with error percentage from +25% to -20%.