Kerbala Journal for Engineering Sciences

This article focuses on two aims the first one is to define and modeling rock types of Zubair
formation in Basrah and the second one is to modeling the petrophysical properties of Zubair
formation. Accurate methods have been used to achieve these aims. The rock formations of the
Zubair oil field was analyzed and important results were obtained from that analysis, then 4 rock
samples from the reservoirs in the Zubair formation have taken at different depths at different
temperature, pressure, and rock type. We used Mercury Injection and Gamma-ray Logging to
determine and calculate the porosity of these rock samples, also we used deep autoencoders in
borehole image logs to determine and calculate permeability. At "Mercury Injection" Method, the
results of this study have suggested that the estimated accessible porosity has been considerably
decreased in the case of implementing new corrections on the MICP (i.e. Mercury Injection
Capillary Pressure) test data. From the “Gamma Ray “method we found that the level of the
gamma-ray has been assumed to be associated with the size of the grain. We found that the best
depth to calculate the properties of sandstone is (650 – 1100 m) underground. We found that the
best depth to calculate the properties of shale is (1300 – 1650 m) underground.

A heat pipe is one of the most effective devices for transferring heat from the heat source to the
sink. It is a vacuum-tight device that depends on the phase-change conversion associated with highly
effective thermal conductivity. A comprehensive review of experimental and numerical investigations
related to the influences of the controlled geometrical parameters and operating variables on the
thermal characteristics of heat pipes and thermosyphons is presented. These variables include the
diameter and length of the heat pipe, working fluids, energy inputs, filling ratio, tilt angle, coolant flow
rate, etc. The thermal features of the heat pipe is described by thermal coefficients and temperature
differences through the condenser and evaporator, thermal efficiency, and thermal resistance. It is
realized that the thermal resistance reduces, and the thermal coefficients increase with the amount of
power input. In addition, the optimum values of tilt angles and fill ratios depend on the other controlled
variables. However, the optimum filling ratio ranged from 15%-60%. While the best inclination angle
was between 60° and 90°.