Oil and gas refinery, oil factories and plants in the middle of nature in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of petroleum production plants and equipment.
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of petroleum production plants and equipment.
Adopting modern technologies in Saudi Arabia, following up on the progress of work in factories, the interior of a large industrial building, heavy equipment and tools, the concept of engineering and industry
Extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, petrochemical industries and projects in the Kingdom, oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Oil factories and plants in the Kingdom of Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, oil and gas refinery, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks
Oil production in the Kingdom of Saudi Arabia, view of factory smoke in the sky, engineering, equipment and huge warehouses, oil and gas refining plant, petrochemical industrial projects, economic growth and progress
Factories and laboratories in the Kingdom of Saudi Arabia, Nahar oil and gas refining plant, Dukhan refinery laboratories, petrochemical industries and projects, huge and large warehouses, engineering and industrial equipment.
Pipelines and steel cables, a large oil refinery equipped with complex machinery in a vast desert landscape and distant mountains, industrial engineering and equipment, petrochemical industries and projects, factories and laboratories in the Kingdom of Saudi Arabia, an oil and gas refining plant in the industrial area, huge and large warehouses.
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Industrial engineering and equipment, pipelines and steel cables, factories and laboratories in the Kingdom of Saudi Arabia, petrochemical industries and projects, huge and large warehouses, oil and gas refining plant in the industrial area, a large oil refinery equipped with complex machinery in a vast desert landscape and distant mountains.
Saudi National Economy Revival, Towers and Metal Structures in Desert Lands, Large and Huge Warehouses and Tanks, Petrochemical Industries and Projects, Petroleum Engineering Concept in Gulf Countries, Oil and Gas Refineries, Fuel Factories and Mines in Saudi Arabia
A group of Saudi Arabian Gulf engineers working in an oil and gas refinery, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia, following up on the progress of work in factories and plants
Petrochemical industries and projects in the Kingdom, development of the Saudi economy, pipelines and heavy steel equipment, huge drilling machines used in oil extraction, exploration for underground resources in the Kingdom of Saudi Arabia, work in the field of industrial and petroleum engineering
The concept of gas production in Saudi Arabia. Monitoring the workflow in factories, pipelines and steel cables. A close-up shot of a group of Saudi-Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects.
The concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
The quality of oil production plants and equipment, the adoption of modern techniques and technology in oil and gas production in the Kingdom of Saudi Arabia, a picture from the back of a Saudi-Gulf Arab businessman wearing the traditional Saudi thobe, following the progress of the factory’s work, Saudi professions and jobs, oil refinery background
Monitoring the progress of the factory, petrochemical industrial projects, silhouette of a Saudi Arabian Gulf engineer wearing a protective helmet, adoption of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, engineering professions and jobs
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Adoption of modern techniques and technology in oil and gas production, view of smoke from factories in the Saudi desert, harsh and dry climate, petrochemical industries and projects, engineering and urban development of oil refineries, huge and modern tools and equipment, oil refinery on soft golden sands
Illuminating metal towers and structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Quality of oil production plants and equipment, adoption of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, cartoon drawings of a Saudi Gulf Arab engineer wearing a protective helmet, following up on the progress of factory work, engineering professions and jobs, petrochemical industrial projects
Renaissance of the Saudi national economy, an oil factory lit at night in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering, petrochemical industries and projects
Petrochemical industries and projects, huge and large warehouses, engineering and industrial equipment, factories and laboratories in the Kingdom of Saudi Arabia in Al-Shorouk, oil and gas refining plant, Dukhan refinery laboratories.
The field of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, the view of the sky at dusk with high illuminated structures
Large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Extracting underground resources from the sea, huge machines and heavy equipment used in petroleum exploration, work in the field of petroleum engineering, petrochemical industries and projects in the Kingdom, oil and gas refining factories in the industrial zone in Saudi Arabia, Saudi economic growth and progress
A view of factory smoke in the air, engineering, equipment and huge industrial warehouses, a close-up of an oil and gas refining plant in the sunset, petrochemical industrial projects, economic growth and progress, oil production in the Kingdom of Saudi Arabia
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
The quality of machinery and equipment in oil extraction plants, the use of modern technologies in oil and gas production, oil refining plants in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector, the view of clouds in the sky
Oil and gas refinery, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, lighting towers and metal structures at sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Towers and metal structures in desert lands, large and huge warehouse tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories in the Kingdom of Saudi Arabia
Engineering professions and jobs, monitoring the progress of factory work, cartoon drawings of a Saudi Gulf Arab engineer wearing a protective helmet, adopting modern techniques and technology in gas production in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, petrochemical industrial projects
Oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the concept of petroleum engineering, quality of machinery and equipment in factories that extract oil wealth from the depths of the seas
Oil refinery factories in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector, the quality of machinery and equipment in oil extraction factories, modern technologies in oil and gas production.
Drilling and prospecting for underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, huge drilling machines used in extracting petroleum, development of the Saudi economy, work in the field of industrial and petroleum engineering.
Pipelines and steel cables, the concept of gas production in Saudi Arabia, monitoring the workflow in factories, a close-up shot of a group of Saudi Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects.
Petrochemical industries and projects, large and huge warehouses, industrial engineering and equipment, factories and plants in Saudi Arabia at sunset, oil and gas refinery, refinery smoke factories, economic growth and progress, oil production in the Kingdom
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
The concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, lighting towers and metal structures at sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Large and massive storage tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Achieving the industrial revolution, adopting modern techniques and technology in engineering, a close-up picture of a Saudi-Gulf Arab engineer wearing glasses and a safety helmet inspecting oil and gas equipment in the factory, Saudi professions and jobs, quality of production and manufacturing
Factories and plants of the Kingdom of Saudi Arabia, oil and gas refinery at sunset, refinery smoke factories, petrochemical industries and projects, huge and large warehouses, industrial engineering and equipment
Large and massive warehouses and tanks, lighting towers and metal structures at sunset, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy
Pipelines and steel cables, the concept of gas production in Saudi Arabia, monitoring the workflow in factories, a close-up shot of a group of Saudi Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects.
Smoke from huge industrial facilities, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, lighting of towers and metal structures at dawn, pollution resulting from oil production
Engineering professions and jobs, monitoring the progress of factory work, cartoon drawings of a Saudi Gulf Arab engineer wearing a protective helmet, adopting modern techniques and technology in gas production in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, petrochemical industrial projects
Work in the field of petroleum engineering, oil and gas refinery, a group of Saudi Gulf Arab workers wearing a protective suit and a protective helmet repairing machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries.
The quality of machinery and equipment in oil extraction plants, petroleum refining plants in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector, modern technologies in oil and gas production.
Quality of oil production plants and equipment, adoption of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, petrochemical industrial projects, close-up of a group of Saudi Arabian Gulf Arab engineers wearing a protective helmet and holding a tablet device in his hand, following up on the progress of factory work
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities, oil and gas refinery
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Factories and plants illuminated at night in Saudi Arabia, huge and large warehouses, industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area
The concept of work in the industrial engineering sector, oil refineries in the Kingdom of Saudi Arabia, the quality of machinery and equipment in oil extraction plants, the use of modern technologies in the production of oils and gas at sunset
Petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at dawn, large and huge warehouses and tanks
Quality of oil production plants and equipment, Saudi jobs and professions, monitoring the progress of factory operations, exporting and selling underground resources in the Kingdom of Saudi Arabia, extracting oil and oils, a picture from the back of a Saudi Arabian Gulf engineer wearing a protective jacket and helmet working on an oil refinery, Salulit
Youth engineering professions and works, work in the industrial engineering sector, a side photo of a Saudi Gulf Arab engineer wearing a jacket and a protective helmet standing at his workplace, Saudi laboratories and factories, the background of the sky at sunset
Gas production concept in Saudi Arabia, Saudi jobs and professions, monitoring the progress of work in factories, a picture from the back of a Saudi Arabian Gulf engineer wearing a helmet and a protective vest supervising the oil refining process
Follow up the progress of work in factories and plants, a group of Saudi Arabian Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Following up on the progress of work in factories, Saudi professions and jobs, a picture from the back of two Saudi Gulf Arab engineers wearing helmets and protection vests walking in an oil refining plant, the concept of gas productivity in the Kingdom of Saudi Arabia
Renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, view of large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Petrochemical industries and projects, oil and gas refinery, oil factories and plants in the middle of the snowy nature and cold weather of the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, lighting towers and metal structures, the concept of petroleum engineering in the Gulf countries
View of large and huge warehouses and tanks at sunset, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, oil factories and laboratories in the Kingdom of Saudi Arabia
The renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects
Petrochemical industries and projects, pipelines and steel cables, oil and gas refining plant in the industrial zone, factories and laboratories in the Kingdom of Saudi Arabia, huge and large warehouses, industrial engineering and equipment.
Huge drilling machines used in petroleum extraction, exploration for underground resources in the Kingdom of Saudi Arabia, development of the Saudi economy, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, work in the field of industrial and petroleum engineering.
Pipelines and heavy steel equipment, huge drilling machines used in petroleum extraction, exploration for underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, development of the Saudi economy, work in the field of industrial and petroleum engineering
Lighting of towers and structures at night, oil factories and plants in Saudi Arabia, the concept of petroleum engineering in the Gulf States, petrochemical industries contributing to the renaissance of the Saudi national economy, huge warehouses and tanks, background of the sky covered with black clouds on a stormy night
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Petrochemical industries and projects, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
Saudi Vision 2030, Integrating Technology with Work, Developing the Saudi Economy, Quality of Petroleum Extraction Tools and Equipment, Selling and Exporting Subsoil Resources, Oil and Gas Exploration Machines, Electronic Screen with Statistical Symbols and Graphics, Rising Stock Market Shares
Factories and plants of the Kingdom of Saudi Arabia, oil and gas refinery at sunset, refinery smoke factories, petrochemical industries and projects, huge and large warehouses, industrial engineering and equipment
Petrochemical industrial projects, engineering professions and jobs, monitoring the progress of factory work, cartoon drawings of a Saudi Gulf Arab engineer wearing a safety helmet, adopting modern techniques and technology in gas production in the Kingdom of Saudi Arabia, quality of oil production plants and equipment.
Renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, towers and metal structures in the desert, oil and gas refinery in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects
Saudi Vision 2030, Integrating Technology with Work, Developing the Saudi Economy, Quality of Petroleum Extraction Tools and Equipment, Selling and Exporting Subsoil Resources, Oil and Gas Exploration Machines, Electronic Screen with Statistical Symbols and Graphics, Rising Stock Market Shares
Adoption of modern techniques and technology in oil and gas production, soft golden sand dunes, engineering and urban development of oil refineries, oil refinery in the desert of the Kingdom of Saudi Arabia, huge and modern tools and equipment
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf States, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia
Industrial station with towers and metal structures at night, development industries contributing to the renaissance of the Saudi national economy, industrial factories in the Kingdom of Saudi Arabia, smoke rising from factories and polluting the environment, large and huge warehouses and tanks, reliance on local national production
The concept of gas production in the Kingdom of Saudi Arabia, Saudi jobs and professions, following up on the progress of work in factories, a close-up photo from the back of a Saudi Gulf Arab engineer wearing a helmet and a protective vest standing between pipelines at sunset, background of an oil refining plant
Fuel factories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Petrochemical industries and projects, a large oil refinery equipped with complex machinery in a vast desert landscape and distant mountains, factories and laboratories in the Kingdom of Saudi Arabia, huge and large warehouses, an oil and gas refining plant in the industrial area, industrial engineering and equipment, pipelines and steel cables.
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Factories and laboratories of the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan refinery laboratories, petrochemical industries and projects, huge and large warehouses, industrial engineering and equipment, white background
Oil production and refining plants and factories, engineering, equipment and huge industrial warehouses, close-up of oil and gas refining plant, petrochemical industrial projects, economic growth and progress, oil production in the Kingdom of Saudi Arabia
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industrial projects, oil exploration tools and equipment, silhouette of oil extraction from desert lands at sunset, economic growth and progress, adoption of modern techniques and technology in gas production in Saudi Arabia, Saluit
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Large and massive warehouses and tanks, lighting towers and metal structures at night, oil factories and laboratories in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy
Petroleum engineering concept, oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, quality of machinery and equipment in factories extracting oil wealth from the depths of the seas
Adopting modern technologies in gas production in Saudi Arabia, following up on the progress of work in factories, a picture from the back of two Saudi Gulf Arab engineers wearing helmets and a protective vest and standing between pipelines, Saudi professions and jobs, background of the oil refining factory.
The concept of gas production in the Kingdom of Saudi Arabia, Saudi professions and jobs, following up on the progress of work in factories, a picture from the back of two Saudi Arab Gulf engineers wearing helmets and protective vests standing between pipelines at sunset, background of the oil refining plant
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
The quality of machinery and equipment in industrial oil extraction plants, modern technologies in oil and gas production, oil refining plants at sunset in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector.
Petrochemical industries and projects in Saudi Arabia, a ship that floats and cleans seawater from oil leaks, petroleum factories and laboratories in the Kingdom, getting rid of dangerous chemical solutions in the seas, preserving the aquatic environment
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Quality of oil production plants and equipment, use of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, back view of a Saudi Arabian Gulf man wearing a helmet and a protective vest following the progress of factory work, engineering professions and jobs, oil refinery background
Oil and gas refinery in industrial area amidst forests and nature, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, factories and plants in Saudi Arabia, huge and large warehouses, industrial engineering and equipment
Factories and plants in Saudi Arabia, Oil and gas refinery in industrial area, Steel pipelines and cables, Petrochemical industries and projects, Pollution resulting from oil production, Huge and large warehouses, Industrial engineering and equipment
Monitoring the progress of work in factories, the concept of gas productivity in the Kingdom of Saudi Arabia, Saudi jobs and professions, a close-up photo from the back of a Saudi Gulf Arab engineer wearing a helmet and a protective vest standing between pipelines at sunset, the background of an oil refining factory
Quality of machinery and equipment in factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf States, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia