Applied plans Trouble shooting:
The costs due to the corrosion of pipelines for corrosive fluids make up an important part of the current expenses in the petroleum and gas industries. Based on the statistics, there are over 35,000 kilometers of pipelines for hydrocarbon fluids, water and wastes in the South Oil and Pipeline and Telecommunication sectors, which are exposed to corrosion problem, and considerable expanses are spent to deal with the problem of corrosion. Conventional methods for this purpose include the application of internal and external coatings for the pipelines, corrosion inhibitors and cathodic protection. In addition to expenses, each of these methods faces with many problems in terms of materials and implementation, causing extra difficulties for the industry.
Due to their inherent anticorrosion characteristic as well as other numerous advantages such as low weight, small friction coefficient and specific mechanical properties, composite pipes are appropriate alternatives for metal pipelines for corrosive fluids and overcome the corrosion problem in pipelines without enormous repair and maintenance costs.
Composite pipelines have been increasingly used for transportation of water and industrial wastes in the petroleum industry. However, these pipelines have never been used for the transportation of hydrocarbon fluids in our petroleum industry. In addition, the possibility of substitution of metal structures prone to corrosion with composite structures is currently going on as a master, strategic research plan for the country’s petroleum industry.
The first composite pipeline for hydrocarbon compounds has been thoroughly designed in the country and the conceptual, basic and detailed design of this pipeline have been performed based on the production capacity in the country via a 100 percent customized technology.
Prevention of foreign currency transfer:
Considerable amounts of foreign currency are currently spent importing corrosion resistant alloys (CRA) as well as starting materials and finished products for coating and other corrosion protection systems. The developed composite pipeline for hydrocarbons is a completely customized technology based on the application of mostly available starting materials. Considering that no corrosion protection system is used for the maintenance of composite pipelines, the foreign exchange expenses of this technology are low. Therefore, the application of composite pipelines for corrosive fluids in the petroleum industry can lead to considerable foreign exchange savings.
Composite pipelines have been used for hydrocarbons for 60 years in the world. Over 12 companies are active in the field of production of composite pipelines and several cases regarding the application of composite pipelines for water and petroleum and industrial wastes have been reported. However, designing specific composite pipelines for hydrocarbons and commercial application of such pipelines are new in the country and there are few companies capable of production of these pipelines. This technology has been successfully commercialized by installation of a 10 km composite pipeline for hydrocarbon compounds in the South Oil area and the pipelines have been produced and used in large scale.
Documents published based on over 30 years experience worldwide and 10 years experience in the country indicate that composite pipelines for hydrocarbons are a little more expensive in terms of initial costs compared with conventional metal pipelines. However, the maintenance costs of these pipelines through their life of over 50 years is close to zero and they are overall more economically justifiable than metal pipelines
There has been nearly no maintenance costs or any specific problem in the 1.2 kilometer composite pipeline for petroleum products transportation which is in operation in Chabahar since 2004. The 10 kilometer composite pipeline for salt containing petroleum in the South Oil area has been successfully installed and the Shadegan salt petroleum is currently being transported through it.