Follow-up of work progress in factories, a picture from the back of a Saudi Arabian Gulf engineer wearing a helmet, a protective vest and a mask standing in front of pipelines, the concept of gas production in the Kingdom of Saudi Arabia, Saudi jobs and professions, background of an oil refinery plant
Youth jobs and professions, the use of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, the quality of oil production plants and equipment, a close-up photo from the back of two Gulf Arab men wearing helmets and protective vests following the progress of factory work
Monitoring the progress of work in factories and laboratories, the concept of gas productivity in the Kingdom of Saudi Arabia, Saudi professions and jobs, 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 plant
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
The concept of gas productivity in the Kingdom of Saudi Arabia, pipelines and steel cables, follow-up of the progress of work in factories and laboratories, a close-up of an Arab-Gulf Saudi engineer working on the computer in the oil and gas refining factory, work in the field of petrochemical industries and projects
Quality of oil production plants and equipment, petrochemical industrial projects, economic growth and progress, adoption of modern techniques and technology in gas production in the Kingdom of Saudi Arabia, cartoon drawings of an oil refinery in the desert
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, lighting towers and metal structures at sunset, large and huge warehouses and tanks
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
Huge and large warehouses, engineering and industrial equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan laboratories refinery, petrochemical industries and projects, white background
Oil refinery pipes in the Kingdom of Saudi Arabia, the use of modern technologies in the production of oils and gas, the quality of machinery and equipment for oil extraction, petroleum refineries and factories, the concept of work in the industrial engineering sector, facilities specialized in petrochemical industries.
Renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, metal towers and structures in the desert, oil and gas refineries in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects.
Achieving the industrial revolution, adopting modern techniques and technology in engineering, a picture from the back of a Saudi Arabian Gulf engineer wearing a protective helmet inspecting oil and gas equipment in the factory, Saudi professions and jobs, quality of production and manufacturing
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
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, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, oil and gas refineries, towers and metal structures in desert lands.
Industrial engineering and equipment, factories and plants in Saudi Arabia, oil and gas refining plant in the industrial area, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, large and huge warehouses
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
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 factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, lighting towers and metal structures, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
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, large and huge warehouses and tanks, towers and metal structures in desert lands
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
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
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
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
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
The quality of oil production plants and equipment, Saudi professions and jobs, following up on the progress of the factory, adopting modern techniques and technology in gas production in the Kingdom of Saudi Arabia, a Saudi Gulf Arab engineer wearing a protective jacket and helmet working on the oil refinery
Following the progress of work in factories and plants, a group of Saudi Arabian Gulf engineers standing with crossed hands and looking at the camera with gestures of happiness, working in an oil and gas refining plant, working in the field of petrochemical industries and projects, the concept of gas productivity in the Kingdom of Saudi Arabia
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Quality of petroleum production plants and equipment, steel pipelines and cables, large industrial facilities, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Engineering professions and jobs, monitoring the progress of factory operations, 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 Saudi Arabian Gulf engineer wearing a safety helmet holding a tablet in his hand
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Facilities for extracting blanket wealth, petrochemical industries and projects, factories and plants in the Kingdom of Saudi Arabia, a close-up of huge pipes in the middle of the desert, huge and large warehouses, industrial engineering and equipment
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
Oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, lighting towers and metal structures, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
Towers and metal structures in desert lands, large and huge storage 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 and mines in the Kingdom of Saudi Arabia
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, large and huge warehouses and tanks, towers and metal structures in desert lands
Steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia, monitoring the progress of work in factories and plants, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects
Following the progress of work in factories, a close-up photo from the back of two Saudi Gulf Arab engineers wearing helmets and protection vests and standing between pipelines at sunset, the concept of gas production in the Kingdom of Saudi Arabia, Saudi professions and jobs, background of the oil refining plant.
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
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 in the Kingdom of Saudi Arabia, large and huge warehouses and tanks
Oil and gas refineries, towers and metal structures in desert lands, large and huge storage tanks, 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
The concept of gas productivity in the Kingdom of Saudi Arabia, monitoring the progress of work in factories and plants, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, pipelines and steel cables
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 plants in the Kingdom of Saudi Arabia, smoke rising from factories and polluting the environment, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Supervising oil plants and factories in Saudi Arabia, back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery
Oil refineries in Saudi Arabia, concept of work in industrial engineering sector, silhouette of a Saudi Arabian Gulf engineer wearing helmet and safety vest supervising the work of machines, quality of equipment in oil extraction plants, modern technologies in oil and gas production
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks at sunset, oil factories and laboratories in the Kingdom of Saudi Arabia
Quality production and manufacturing, achieving the industrial revolution, adopting modern techniques and technology in engineering, a close-up photo of a Saudi-Gulf Arab engineer wearing glasses and a safety helmet inspecting oil and gas equipment in the factory, Saudi professions and jobs
Steel Pipelines and Cables, Petrochemical Industries and Projects, Pollution from Oil Production, Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Following 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, the concept of gas production in the Kingdom of Saudi Arabia, Saudi professions and jobs, background of an oil refining factory
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 that extract oil wealth from the depths of the seas
Petrochemical industries and projects in the Kingdom, extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, work in the field of petroleum engineering, oil and gas refining factories in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Petrochemical industries and projects in the Kingdom, Extraction of underground resources from the sea, Huge machines and heavy equipment used in oil exploration, Work in the field of petroleum engineering, Oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
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
Supervising oil plants and factories in Saudi Arabia, back view of two Saudi Arabian Gulf workers wearing protective suits and helmets, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery
Huge machinery and heavy equipment used in petroleum exploration, work in the field of petroleum engineering, oil and gas refining plants in the industrial zone in Saudi Arabia, extracting underground resources from the sea, petrochemical industries and projects in the Kingdom, Saudi economic growth and progress
The concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, oil and gas refineries, petrochemical industries and projects, 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, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
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
Petrochemical industries and projects, a large oil refinery equipped with complex machinery in a vast desert landscape and distant mountains, pipelines and steel cables, huge and large warehouses, industrial engineering and equipment, factories and laboratories in the Kingdom of Saudi Arabia, an oil and gas refining plant in the industrial zone.
Petrochemical industries and projects, an oil and gas platform for extracting oils, the renaissance of the Saudi national economy, an excavator performing exploration, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea, the concept of petroleum engineering
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, 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.
Lighting of towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Lighting of towers and metal structures, 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, large and huge warehouses and tanks
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.
The concept of gas production in the Kingdom of Saudi Arabia, following up on the progress of work in factories, Saudi professions and jobs, two Saudi Gulf Arab engineers wearing helmets and protection vests standing in an oil refining factory
Follow-up of work progress in factories, side view of a Saudi Arabian Gulf engineer wearing a helmet, protective vest and mask standing in front of pipelines, gas production concept in Saudi Arabia, Saudi jobs and professions, oil refinery background
Renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, towers and metal structures in the desert at sunset, oil and gas refinery in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects
Oil plants and factories 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, lighting towers and metal structures at sunset, large and huge warehouses and tanks
Evaluation of the quality of oil factories in the Kingdom of Saudi Arabia, oil and gas refining plant in the industrial zone, petrochemical industries and projects, a picture from the back of a Saudi Gulf Arab engineer wearing a protective suit and a protective helmet working in the field of petroleum engineering
Machines for large industrial facilities for petroleum production, 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 towers and metal structures at night.
Huge and large temporary storage warehouses, petrochemical industries and projects, industrial engineering and equipment, petroleum processing in Saudi Arabia’s factories, oil and gas extraction platform in the middle of the sea, sunset view in the sky full of clouds
Industrial refinery workers walk towards the factory at sunset, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia, monitoring the progress of work in factories and plants
Working in the field of petroleum engineering, supervising oil plants and factories in the Kingdom of Saudi Arabia, a Saudi Arabian Gulf worker wearing a protective suit and a protective helmet, pipelines extending from the depths of the sea to the refineries, an oil and gas refinery
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.
The concept of work in the industrial engineering sector, the quality of machinery and equipment in oil extraction laboratories, modern technologies in oil and gas production, oil refining plants at sunset in the Kingdom of Saudi Arabia.
Development of the Saudi economy, huge drilling machines used in extracting petroleum, exploration for underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, work in the field of industrial and petroleum engineering.
Professional photography of a crude oil plant in Saudi Arabia, highlighting industrial architecture, close-up of a modern and bright oil refinery, advanced technical equipment and tools, petrochemical industries and projects, large and huge warehouses, industrial engineering and equipment
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 sunrise with high illuminated structures
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
Saudi professions and jobs, 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, the concept of gas production in the Kingdom of Saudi Arabia, background of an 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
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
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
Working in petroleum engineering, oil and gas refinery, supervising oil plants and factories in Saudi Arabia, back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets, pipelines extending from the depths of the sea to the refineries
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
The concept of gas production in the Kingdom of Saudi Arabia, following up on the progress of work in factories, a close-up photo of two Saudi Gulf Arab engineers wearing helmets and a protective vest and standing between pipelines, Saudi engineering professions and jobs, oil refining factory background
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
Lighting of towers and metal structures at sunset, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Concept of work in the industrial engineering sector, oil refineries in Saudi Arabia, quality of machinery and equipment in oil extraction plants, close-up of the NAFC refinery illuminated at night, use of modern technologies in oil and gas production
Working in petroleum engineering, oil and gas refinery, supervising oil plants and factories in Saudi Arabia, back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets, pipelines extending from the depths of the sea to the refineries
Pipelines and steel equipment, factory and laboratory engineering in the industrial zone in the Kingdom of Saudi Arabia, petrochemical industries and projects, huge and large warehouses,
Lighting of towers and metal structures at night, large and huge warehouses and tanks, oil factories and plants in the Kingdom of Saudi Arabia, working in the field of petroleum engineering in the Gulf countries, a side view of a Saudi Arabian Gulf engineer wearing a jacket and a protective helmet following the progress of work in the plants
Large and massive warehouses and tanks, towers and metal structures at sunset, petroleum engineering concept in the Gulf countries, oil and gas refinery, petrochemical industries and projects, oil factories and plants in the Kingdom of Saudi Arabia
Steel pipelines and cables, monitoring the progress of work in factories and plants, close-up of a Saudi Arabian Gulf engineer holding a laptop in his hand working in an oil and gas refining plant, working in the field of petrochemical industries and projects, the concept of gas productivity in the Kingdom of Saudi Arabia
Industrial engineering and equipment, factories and plants in Saudi Arabia, oil and gas refining plant in the industrial area, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, large and huge warehouses
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.
Large and huge warehouse tanks, 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, fuel factories in the Kingdom of Saudi Arabia
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, following up on the progress of factory work, engineering professions and jobs, petrochemical industrial projects
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
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
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
Sky view at dusk with high illuminated structures, field of petroleum engineering in the Gulf countries, oil and gas refinery, 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