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Register a new userStudy of the Surfactants effect on the curves of relative permeability
دراسة تأثير مخفضات التوتر السطحي على منحنيات النفوذية النسبية
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أحمد عقل سعيد( باحث )
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تم في هذا البحث معالجة هذه المياه ببعض المواد بحيث تجعل الصخر محباً للماء أكثر منه للنفط , و الذي يؤدي إلى تحسين الخصائص الارتشاحية للماء , بدراسة تأثير المياه على منحنيات النفوذية النسبية و على كمية المياه المترابطة قبل و بعد معالجتها بإضافة مخفض التوتر السطحي ( 415 - Servo ) بتركيز % 0.05 وزناً .
in this search this water is treated with some materials to the rock become much lover to water than oil, which pay improve water transpire properties, by studying water effect on relative permeability curves and connected quantity water before and after its treatment by adding surfactant (Servo-415) with concentration(0.05%) weight.
References used
(Bavi-ere .M.,Bazin,. B& labnd ,.J., Chemical Stability of Surfactants for micellar flooding under Noth-Sea conditions in Stitu . 13(13) (1989 .101-20
Harwell,J. H., surfactant adsorption and chromatographic movement with application of surfactant in enhanced oil recovery . PhD dissertation, university of Texas ,. Austin, USA,1983
Delshad . M. Dels had . M. Pope .G.A .Lake .L .W. Two- and Three-Phase Permeabilities of micellar Fluids . SPE Formation.2(3)(1987)327-37
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This research aims to study the effect of adding inorganic waste (Marble powder -
glass powder) on the volumetric and longitudinal shrinkage curves at unsaturated polyester
resin, tests showed that samples exposed to volumetric and longitudinal shr
ink and
occurrence of consecutive gradients in volumetric shrinkage values. Whatever the ratio of
the added materials (marble powder - the glass powder) will effect the behaviour of the
unsaturated polyester hardening, that means it will effect the volumetric shrinkage.
It is necessary to study the volumetric and longitudinal shrinkage values because
they affect the product size to be dealt with, this value should be taken into account in the
design so that should be added this amount of volumetric shrinkage to the dimensions to
designed templates in order to avoid potential variations occurring in the final product.
Preliminary results showed that the value of volumetric shrinkage got up (5%) and the
curves tend to stability, almost three weeks after the initial hardening incident.
We study in this research approximation of complex functions from Orlicz space on a subclass of Carlson curves, which called Dini smooth curves to rational functions by using polynomials related with Dzjadyk sums which obtained from Faber polynomials. We depend on some concepts of complex analysis such as formulas of Sokhotski to reach the desired goal
In this work, we have studied the issue of approximation of functions from Morrey
space ; by rational functions on a large group of curves,
which called Dini-smooth curves. Moreover, approximation of functions from Morrey
Smirnov space defined on a finite domain with a boundary belonging to Dini- smooth
curves by polynomials is obtained.
Apple plays a substantial role in both income generation and job
creation has shown an increase in export volume. Therefore ,
a study was conducted in the Governorate of Homs on apple ,
( 16 ) Villages that are well known for the growing of apple
fruits
were chosen by random sample method through season
2012 – 2013 for Study of economic indicators of irrigated and
rain fed apple in Governorate of Homs.
Study used Agricultural policy analysis matrix to define the impact
of economic policies applied on the farm budget of apple , to this
end the criteria of nominal and actual protection , profitability , and
farmers subsidies were used , and the criteria that measures the
comparative advantage is domestic resources cost .
The conclusions of the study reveal as follow :
- For fresh irrigated apple in governorate of Homs : production of
apple are feasible under private and social conditions , the value
of social revenues is greater than the value of private revenues
this means the government is taxing producers , there is finance
support by the government for this product , the effect of all
policies on prices of inputs and outputs are advantage of
producers , and there is comparative advantage to product fresh
irrigated apple in governorate of Homs because Domestic
Resource Cost ( DRC = 0.91 ) was less than one .
- For fresh rain fed apple in governorate of Homs : production of
apple are feasible under private and social conditions , there is
finance support by the government for this product , the
government is taxing domestic resources , the effect of all policies
on prices of inputs and outputs are advantage of producers , and
there is comparative advantage to product fresh rain fed apple in
governorate of Homs .
Finally , we showed appropriate recommendations to improve
Domestic Resources Cost and thus improve the Relative
advantage and competitiveness of irrigated and rain fed apple ,
whereat it included ways for the improvement of the Relative
advantage and competitiveness during the production process and internal and external marketing .
A pot experiment was conducted to evaluate the relative agronomic
effectiveness (RAE%) of a Syrian phosphate rock when it is added alone and as
mixture with elemental sulfur with three different ratios (PR:S) (2:1) (5:1) (8:1)
and compared with tr
iple superphosphate. The main results of this study
showed that Ain Layloun phosphate rock was not effective for direct use by
Rye grass when used alone, but it became effective when mixed with elemental
sulfur. The relative agronomic effectiveness was varied following mixing ratios,
it was 50%, 76% and 87% in (8:1), (5:1) and (2:1) (PR:S) mixing ratios
respectively. This is due to the increase of available soil phosphorus content
which is related to the increase of phosphate rock solubility due to decrease of
pH derived from oxidation of sulfur by Thiobacillus spp.
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