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Papers by hacini messaoud

Research paper thumbnail of Le Lithium Dans Les Lacs Salés Des Régions Désertiques; Cas Du Chott Merouane Sud-Est De L Algérie; Comportement, Origine, Potentialités et Perspectives

Research paper thumbnail of Vulnerability Assessment of an Aquifer in Arid Environment and Comparison of the Applied Methods: Case of the Mio-Plio- Quaternairy Aquifer in Oued Righ Valley (Southeastern Algeria)

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Modeling of Groundwater Flow of the Mio-Plio-Quaternary Aquifer in the Valley of Oued Righ (South-East of Algeria)

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Description and validation of the new data to determine a geoid model in Algeria

Energy Procedia, 2019

District heating networks are commonly addressed in the literature as one of the most effective s... more District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the greenhouse gas emissions from the building sector. These systems require high investments which are returned through the heat sales. Due to the changed climate conditions and building renovation policies, heat demand in the future could decrease, prolonging the investment return period. The main scope of this paper is to assess the feasibility of using the heat demand-outdoor temperature function for heat demand forecast. The district of Alvalade, located in Lisbon (Portugal), was used as a case study. The district is consisted of 665 buildings that vary in both construction period and typology. Three weather scenarios (low, medium, high) and three district renovation scenarios were developed (shallow, intermediate, deep). To estimate the error, obtained heat demand values were compared with results from a dynamic heat demand model, previously developed and validated by the authors. The results showed that when only weather change is considered, the margin of error could be acceptable for some applications (the error in annual demand was lower than 20% for all weather scenarios considered). However, after introducing renovation scenarios, the error value increased up to 59.5% (depending on the weather and renovation scenarios combination considered). The value of slope coefficient increased on average within the range of 3.8% up to 8% per decade, that corresponds to the decrease in the number of heating hours of 22-139h during the heating season (depending on the combination of weather and renovation scenarios considered). On the other hand, function intercept increased for 7.8-12.7% per decade (depending on the coupled scenarios). The values suggested could be used to modify the function parameters for the scenarios considered, and improve the accuracy of heat demand estimations.

Research paper thumbnail of Origin and Impact of Trace Elements on Brines of Chotts and Sebkhas (Saline Lakes) in Algerian Low Sahara

Iraqi Geological Journal

The brines in the chotts and sebkhas of the Algerian Low Sahara are solutions characterized by a ... more The brines in the chotts and sebkhas of the Algerian Low Sahara are solutions characterized by a salinity that far exceeds that of the waters of the sea (120 to 440 g/l). Over the past three decades, these lacustrine systems (chotts and sebkhas) have become an estuary for all types of urban discharge; this situation highlights the environmental impact of these discharges on these lacustrine systems. The chemical analysis of the brines showed that the average concentration of certain trace elements is very high. It is of the order of 2.2 mg/l for Zn, 1.6 mg/l for Cu and 0.03 mg/l for Pb and Ni. These trace elements are trapped in evaporites and clays and are micropollutants that cause nuisance even when they are released in very small quantities.

Research paper thumbnail of Thermodynamic Models: Application to the Brines of Chotts in the Algerian Northeastern Sahara

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Ecological Characterization of Aquatic Ecosystems in Northern of Algerian Sahara

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of The Optimal Formula for Organic Oil Immobilization in Algerian Petroleum Drill Cuttings Using Solidification/Stabilisation Treatment

Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it... more Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it covers an important quantity of total Crude Oil Production in Algeria. Furthermore, two-thirds of this oil field is underexplored or not explored. Therefore, the drilling process of petroleum wells in this field is a continuous process that results in significant drilling waste. This implies that, enormous noxious quantities of drilling waste are produced daily that require treatment via solidification/stabilization (S/S) process before being landfilled. These types of wastes have pollution concentration that significantly exceeds the safety standards. In this study, we focus on the factors affecting the solidification/stabilization treatment of the drill cuttings obtained from Hassi Messaoud oil field and the process optimization. The solidification/stabilization is performed using the cement as binder, sand, silicate, organophilic clay and activated carbon as additives. The study is d...

Research paper thumbnail of Wastes of Oil Drilling: Treatment Techniques and Their Effectiveness

World Academy of Science, Engineering and Technology, International Journal of Environmental and Ecological Engineering, 2018

In Hassi Messaoud’s oil industry, the systems which are water based (WBM) are generally used for ... more In Hassi Messaoud’s oil industry, the systems which are water based (WBM) are generally used for drilling in the first phase. For the rest of the well, the oil mud systems are employed (OBM). In the field of oil exploration, panoply of chemical products is employed in the drilling fluid formulation. These components of different natures and whose toxicity and biodegradability are of ill-defined parameters are, however, thrown into nature. In addition to the hydrocarbon (HC, such as diesel) which is a major constituent of oil-based mud, we also can notice spills as well as a variety of other products and additives on the drilling sites. These wastes are usually stored in places called (crud wastes). These may cause major problems to the ecosystem. To treat these wastes, we have considered two methods which are solidification/stabilization (chemical) and thermal. So that we can evaluate the techniques of treatment, a series of analyses are performed on dozens of specimens of wastes be...

Research paper thumbnail of Caractérisation et Géomodelisation Du Réservoir Paléozoique Dévonien Du Champ De Teguentour, Région D'Ain Salah

UNIVERSITE KASDI MERBAH OUARGLA FACULTE DES HYDROCARBURES DES ENERGIES RENOUVELABLES ET DES SCIEN... more UNIVERSITE KASDI MERBAH OUARGLA FACULTE DES HYDROCARBURES DES ENERGIES RENOUVELABLES ET DES SCIENCES DE LA TERRE ET DE L‘UNIVERS DEPARTEMENT DE SCIENCES DE LA TERRE ET DE L‘UNIVERS

Research paper thumbnail of Numerical study of laminar natural convection in a complicated cavity heated from top with sinusoidal temperature and cooled from other sides

Computers & Fluids, 2007

In this article, we present a two-dimensional study of laminar natural convection in porous enclo... more In this article, we present a two-dimensional study of laminar natural convection in porous enclosure. The horizontal walls of the enclosure are thermally insulated , where as the left and right vertical walls are maintained respectively at different temperatures (warm temperature) and (cold temperature).we present the differential equations modeling the phenomenon studied according to Darcy-Brinkman-Forcheimer model. after the dimensionless form of the equation we have four dimensionless numbers : the Prandtl number the thermal Grashof , the aspect ratio A, the Darcy number .The results allowed us to conclude the following: Increasing of Grachof number with a constant Darcy number, so we areThe increase of convection and as a result the increase in flow velocity and heat transfer.at constant of Grachof number whith decreasing of the Darcy number, the medium is impermeable which slow motion of the convection phenomenon. so we are a degradation speed and heat transfer .Finaly We executed the program calculates with the real data of oil reservoir.

Research paper thumbnail of Le Lithium Dans Les Lacs Salés Des Régions Désertiques; Cas Du Chott Merouane Sud-Est De L Algérie; Comportement, Origine, Potentialités et Perspectives

Research paper thumbnail of Vulnerability Assessment of an Aquifer in Arid Environment and Comparison of the Applied Methods: Case of the Mio-Plio- Quaternairy Aquifer in Oued Righ Valley (Southeastern Algeria)

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Modeling of Groundwater Flow of the Mio-Plio-Quaternary Aquifer in the Valley of Oued Righ (South-East of Algeria)

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Description and validation of the new data to determine a geoid model in Algeria

Energy Procedia, 2019

District heating networks are commonly addressed in the literature as one of the most effective s... more District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the greenhouse gas emissions from the building sector. These systems require high investments which are returned through the heat sales. Due to the changed climate conditions and building renovation policies, heat demand in the future could decrease, prolonging the investment return period. The main scope of this paper is to assess the feasibility of using the heat demand-outdoor temperature function for heat demand forecast. The district of Alvalade, located in Lisbon (Portugal), was used as a case study. The district is consisted of 665 buildings that vary in both construction period and typology. Three weather scenarios (low, medium, high) and three district renovation scenarios were developed (shallow, intermediate, deep). To estimate the error, obtained heat demand values were compared with results from a dynamic heat demand model, previously developed and validated by the authors. The results showed that when only weather change is considered, the margin of error could be acceptable for some applications (the error in annual demand was lower than 20% for all weather scenarios considered). However, after introducing renovation scenarios, the error value increased up to 59.5% (depending on the weather and renovation scenarios combination considered). The value of slope coefficient increased on average within the range of 3.8% up to 8% per decade, that corresponds to the decrease in the number of heating hours of 22-139h during the heating season (depending on the combination of weather and renovation scenarios considered). On the other hand, function intercept increased for 7.8-12.7% per decade (depending on the coupled scenarios). The values suggested could be used to modify the function parameters for the scenarios considered, and improve the accuracy of heat demand estimations.

Research paper thumbnail of Origin and Impact of Trace Elements on Brines of Chotts and Sebkhas (Saline Lakes) in Algerian Low Sahara

Iraqi Geological Journal

The brines in the chotts and sebkhas of the Algerian Low Sahara are solutions characterized by a ... more The brines in the chotts and sebkhas of the Algerian Low Sahara are solutions characterized by a salinity that far exceeds that of the waters of the sea (120 to 440 g/l). Over the past three decades, these lacustrine systems (chotts and sebkhas) have become an estuary for all types of urban discharge; this situation highlights the environmental impact of these discharges on these lacustrine systems. The chemical analysis of the brines showed that the average concentration of certain trace elements is very high. It is of the order of 2.2 mg/l for Zn, 1.6 mg/l for Cu and 0.03 mg/l for Pb and Ni. These trace elements are trapped in evaporites and clays and are micropollutants that cause nuisance even when they are released in very small quantities.

Research paper thumbnail of Thermodynamic Models: Application to the Brines of Chotts in the Algerian Northeastern Sahara

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of Ecological Characterization of Aquatic Ecosystems in Northern of Algerian Sahara

PONTE International Scientific Researchs Journal, 2016

Research paper thumbnail of The Optimal Formula for Organic Oil Immobilization in Algerian Petroleum Drill Cuttings Using Solidification/Stabilisation Treatment

Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it... more Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it covers an important quantity of total Crude Oil Production in Algeria. Furthermore, two-thirds of this oil field is underexplored or not explored. Therefore, the drilling process of petroleum wells in this field is a continuous process that results in significant drilling waste. This implies that, enormous noxious quantities of drilling waste are produced daily that require treatment via solidification/stabilization (S/S) process before being landfilled. These types of wastes have pollution concentration that significantly exceeds the safety standards. In this study, we focus on the factors affecting the solidification/stabilization treatment of the drill cuttings obtained from Hassi Messaoud oil field and the process optimization. The solidification/stabilization is performed using the cement as binder, sand, silicate, organophilic clay and activated carbon as additives. The study is d...

Research paper thumbnail of Wastes of Oil Drilling: Treatment Techniques and Their Effectiveness

World Academy of Science, Engineering and Technology, International Journal of Environmental and Ecological Engineering, 2018

In Hassi Messaoud’s oil industry, the systems which are water based (WBM) are generally used for ... more In Hassi Messaoud’s oil industry, the systems which are water based (WBM) are generally used for drilling in the first phase. For the rest of the well, the oil mud systems are employed (OBM). In the field of oil exploration, panoply of chemical products is employed in the drilling fluid formulation. These components of different natures and whose toxicity and biodegradability are of ill-defined parameters are, however, thrown into nature. In addition to the hydrocarbon (HC, such as diesel) which is a major constituent of oil-based mud, we also can notice spills as well as a variety of other products and additives on the drilling sites. These wastes are usually stored in places called (crud wastes). These may cause major problems to the ecosystem. To treat these wastes, we have considered two methods which are solidification/stabilization (chemical) and thermal. So that we can evaluate the techniques of treatment, a series of analyses are performed on dozens of specimens of wastes be...

Research paper thumbnail of Caractérisation et Géomodelisation Du Réservoir Paléozoique Dévonien Du Champ De Teguentour, Région D'Ain Salah

UNIVERSITE KASDI MERBAH OUARGLA FACULTE DES HYDROCARBURES DES ENERGIES RENOUVELABLES ET DES SCIEN... more UNIVERSITE KASDI MERBAH OUARGLA FACULTE DES HYDROCARBURES DES ENERGIES RENOUVELABLES ET DES SCIENCES DE LA TERRE ET DE L‘UNIVERS DEPARTEMENT DE SCIENCES DE LA TERRE ET DE L‘UNIVERS

Research paper thumbnail of Numerical study of laminar natural convection in a complicated cavity heated from top with sinusoidal temperature and cooled from other sides

Computers & Fluids, 2007

In this article, we present a two-dimensional study of laminar natural convection in porous enclo... more In this article, we present a two-dimensional study of laminar natural convection in porous enclosure. The horizontal walls of the enclosure are thermally insulated , where as the left and right vertical walls are maintained respectively at different temperatures (warm temperature) and (cold temperature).we present the differential equations modeling the phenomenon studied according to Darcy-Brinkman-Forcheimer model. after the dimensionless form of the equation we have four dimensionless numbers : the Prandtl number the thermal Grashof , the aspect ratio A, the Darcy number .The results allowed us to conclude the following: Increasing of Grachof number with a constant Darcy number, so we areThe increase of convection and as a result the increase in flow velocity and heat transfer.at constant of Grachof number whith decreasing of the Darcy number, the medium is impermeable which slow motion of the convection phenomenon. so we are a degradation speed and heat transfer .Finaly We executed the program calculates with the real data of oil reservoir.