Development And Application of Oil|Gas Transmission Pipeline

For reduce the cost of transporting oil and gas from oil and gas fields to the using area, working pressure of oil and gas transmission pipeline need to be increased. Onshore natural gas pipeline pressure force of the work has been increased to higher than 15 Mpa, submarine pipeline working pressure in the gulf of Mexico and the north sea constructed is 25 Mpa; while the Russian east siberia-pacific ocean pipeline comes on top, maximum working pressure up to 14 Mpa. Since the west-east gas pipeline construction began in China, the main gas pressure increased from 6.4 MPa to 10 MPa, during the period of "11th five-year plan" the construction of the second line of west-east gas such as natural gas long distance trunk used 12 MPa or higher working pressure. Adopt high grade pipeline to built long-distance pipeline has obvious economic advantage. These advantages come from the pipeline efficiency and reduced the materials cost. Small diameter and thin wall thickness of the steel tube can reduce the total weight, and to reduce the consumption of ring welding materials.

Built in the United States in 2005 Cheyenne gas transmission pipeline is the first X80 pipeline, also is the world's longest X80 pipeline, its total length-612 km, main steel pipe diameter-914 mm, thickness-11.9 mm, maximum thickness of the pipeline is 17.2 mm. Based on United States in Cheyenne was successfully completed, the larger American "west-east gas pipeline" was built -- RockiesExpressPipeline. It was the largest gas transmission pipeline build in the United States over the past 20 years, using grade X80 steel pipe, pipe diameter-1067 mm, total length reached 2130 km, X80 had gradually became the main steel grade for long onshore natural gas transmission pipeline.