A facility where gas is compressed and re-injected into the pipeline.
Gas is moved along the pipeline by large compressors located at intervals along the system.
Directional drilling One method by which a pipeline trench is constructed under a geological feature or barrier such as a steam bed, major road, etc. Easement A strip of land used to accommodate the pipeline. Rights to use the land are usually purchased from a landowner. Intelligent pigs Electronic devices inserted into the pipeline at regular time intervals to check the integrity of the line. A document for construction contractors which itemizes Project requirements to be undertaken, providing site-specific information for field personnel.