A Design Summary of Shen-Niu Pipeline for Crude 0il of High Pour Point

In consideration of the characteristics of our high pour point crude oil and the terrain, meterological conditions along the pipelines, it is assumed through analiysis of special rheological properties that the transporting temperature must be higher than the pour point. To garantee safe transportation there should be taken the following technical measures: 1. To install water jacket furnaces in pump stations, and to have pipelines insulated with yellow jacketed polyurethane and hot thin oil circulated at high pressure, etc, 2. To select steel pipes of high strength and make accounting of the properties of steel pipes such as strength, heat stress and stability; 3. To prevent solidification of oil at varied phases passing through a station and to have all apparatus insulated to keep them from soldification; 4. To meet special requirement in construction, do pipeline clearing and preheating after pressure test and trial operation。The commisioning operation shows. The measures taken in design are proper, and construction meet the requirement of the design. the technical hard nut in tran-sporting high pour point crude oil is broken with considerable economic efficiency, providing practical basis for developing such kind of crude oil on a large scale.