In this research, a study of the influence of arc welding
parameters on the thermal cycle was conducted, where the thermal
cycle within the welded plate of stainless steel 304L by plasma arc
welding (PAW) with weld-on-plate was measured using
the
rmocouples for several welding parameters (intensity of the
welding current, welding velocity, flow rate of plasma gas) and
comparing the influence of this parameters on the thermal cycle
within the plate.
In this research a performance of TurboExpander and Joule-
Thomson valve will be compared in a proposed system developed
in order to recover flare gas in oil fields outstations which not
connected to any gas plant and burns continually the entire
associated gases in the flare, and reuses the mentioned gases in
central process facilities as a fuel in gas turbines which use diesel
(as they have dual system gas-diesel), while the associated gases in
related outstations are burned.
The Objectives of this research are to study the Oil Formation
Covered with Water or Gas, Formation of Water or Gas Coning and
Mathematics Control Mechanisms of it, then to know the Water
Coning Isolating Types in the Syrian Fields (as ALRoumailan
and
ALGbisseh).
In this research we studied tricone drill bits by applying a
mathematical model which gives an analysis the effected factors on
its performance and efficiency(rate of penetration) , so we can
change these factors in valid allowable rang of operati
ng once ,
which it gives a positive impact on its performance which shorten
time and cost of drilling run , that has been in one of the Syrian oil
fields :Deir Ezzour petroleum company ..
Abo Rabah is one of the most important structures in the Al- Daw
basin, because of the great tectonic complexity that has been
exposed during the geological history, and being one of the most
important gas producing areas in Syria. That explains t
he
importance of its study. Our applied studies indicates that there is
significant variation in salt thickness depending on sedimentation
and tectonic factors, which directly affects the kurachine dolomite
gas reservoir, Here lies the importance of this paper.
Uncontrolled disposal of produced water from oil and gas industry in the
environment involves the environmental hazard like contamination soil by NORM and
increase the radiation exposure to terrestrial gamma radiation by workers and public. the
st
udy aims to measure radiation levels in the drainage zone and vicinity in the field of
crude oil storage tanks in the site of Syrian company for oil transport in Banyas. Terrestrial
gamma radiation dose was measured, the values ranged between 0.02 – 0.24 μSv.h-1. The
radioactivity concentrations of NORM were determined for Ra226, Th232, K40 by gamma
spectroscopy using HPGe detector in surface soil samples taken from three sites, two of
them recorded the highest rate of radiation dose, while the third recorded the rate of
radiation background. The Ra226, K40, Th232highestconcentrations in the soil samples were
found to be 210, 213 and 55.9 Bq.kg-1, respectively. Radiation indexes were estimated.
The present results were compared with results published in different countries.
Gas turbines are used as main engines to convert fuel energy into
mechanical energy used to move the generator and thus produce
electrical power at the power plants. When you use a gas turbine in
the power plants, it must maintain a constant speed
of the turbine
and thus fixed frequency output of the current also must maintain
the parameters of the turbine such as pressures and temperatures at
the limits and thus extend the life of the turbine components and
increased efficiency. there was a need for the design of control
systems maintain a constant speed of the turbine and to avoid
operating at others and allowed values. In this research, we modeled
the gas turbine and solving the model using MATLAB/ SIMULINK
program, and then design a proportional integral differential
controller for gas turbine operating In Gandar Station
desulfurization study of gas oil is very important, in
order to reduce the resulted pollution from acidic gas SO2, which
results by burning the fuel, and to prevent poisoning of sensitive
catalysts with sulfur, in subsequent processes, and to prev
ent
corrosion of engines and equipment in refineries. So, refineries
have been restricted by very low sulfur content, in their products.
Because the hydrodesulphurization did not demonstrate good
efficiency in reducing the sulfur and aromatics content to the
required limits, it has been to search for alternative or completed
methods for it .One of these processes is the oxidation –extraction
method, which has been studied in our work. We used hydrogen
peroxide as oxidant, and acetonitrile as extraction solvent. We
studied Operation conditions in terms the proportion of oxidant and
extraction solvent to fuel, and we chose the operation temperatures
to suit the specifications of the oxidant and extraction solvent. We
studied diesel specifications, which we applied at it the process of
oxidation and extraction.
The research aims to identify incoming fatty acids in the composition of both the
Syrian domestic oil extracted from the seeds of Nigella sativa, fenugreek, borage and
Rocket , using gas chromatography GC, as the goal to identify some of the most i
mportant
physical properties ( density and refractive index ) and chemical ( Iodine number and
saponification number ) utmost to improve and develop the Syrian varieties of the studied
oils.
Search Results showed that borage oil contain the highest proportion of the Poly
unsaturated fatty acids ( 81.5% ) PUFA and the highest percentage of gamma -linolenic
acid ( 14.4% ) GLA, and it was for each of Nigella sativa oil and oil fenugreek close by
percent's of ( 60.89%-60.95% ) PUFA, and overall mono unsaturated fatty acids ( 33.89%-
28.19% ) MUFA and linoleic acid ( 60.71%-58.92% ) LA has the enjoyment of the highest
value oil ring of oleic fatty acid ( 26.72% ), while oil Rocket had the highest values ( 79%)
MUFA so different from the rest of the studied oils. The results of this research clearly
compatible with the results of global studies at the same oils.
This research was carried out to determine the quantity of essential oil extracted
from myrtle Myrtus communis L leaves, by hydro distillation, and to identify the
major and minor components, besides to determine its quantities in the essential oil
by Gas Chromatography-Mass Spectrometry GC-MS. The samples were collected
on November 2013 from eight different climatic locations (Aleppo, Zarzour, Alzenea,
Katra AL-Rayhan, Al- Rayhana, Kasab, Mashta al-Holou and Mosiaf). The
quantity and composition of the essential oil were estimated on the basis of the
leaves dry weight. Oil quantity varied between the studied genotypes from different
locations, which range from 0.46 to 0.55 ml, with non-significant differences.
Eighteen compounds were identified in myrtle essential oil, and there were
significant differences in 13 compounds. 1,8-Cineole performed the highest rate
(18.85%) compared with other components, followed by α-Pinene (16.93%). While
the lowest percentage was (0.31%) of Myrcene. The
