Study of Hydrocarbons Condensation Phenomenon in Natural Gas Transmission Pipelines

Natural gas prepared for pipeline transportation must have appropriate parameters described in norms and standards. This entails a restrictive approach to accept changes in natural gas composition in pipeline transmission systems. The greater number of entry points to a pipeline transmission system, the greater the probability of natural gas diversity in terms of the content of its individual components. It particularly concerns the natural gas sources in which treatment methods are not sufficiently accurate. It also concerns imported gas, which may be of worse quality than that required by the standards. In specific cases when natural gas with a higher content of heavier hydrocarbons such as propane and butanes enters the transportation system, it is possible for the phenomenon of condensation to occur. The occurrence of the two-phase system significantly worsens the pipeline transport conditions, causing significant pressure drops in the transported natural gas. The work examines cases where the phenomenon of condensation occurred in the pipeline transportation of natural gas.