In order to solve the problem of safe and economic operation of An Yong oil line, the author made this study. It is very meaningful and necessary to study and establish this technology scheme, which is in fact the re-optimization design of crude oil pipeline engineering design.The delivery process of An Yong oil pipeline is very complex, variable delivery insecurity and no saving energy become a norm and a serious lack of variables and variable temperature controlling technology based operations in the production running from the 2009 "3 • 14" condensating pipe accident, the low transmission capacity problem of An Yong oil pipeline in snow days and rainy seasons running is more prominent, given the variables and variable temperature controlling technology based operations is particularly important. To take only Zhongshanchuan - Jingjiaping segment as an example in this article, to calculate the temperature indicators of outbound crude oil under different transmission capacities in different seasons in a particularly complex way, which help guide the actual production running of An Yong oil pipeline, according to the variable crude oil to control the temperatures of crude oil out or into the station or valve in different seasons.The research results are shown in Table1, Table2 and Table3 in the following paragraphs.

Ruihua Yuan. Study on the Technology Scheme of Preventing Solidification Pipe (Reduce Drag) and Safe and Economic Operation of An Yong Oil Pipeline. International Journal of New Developments in Engineering and Society (2021) Vol.5, Issue 3: 42-46. https://doi.org/10.25236/IJNDES.2021.050305.

[1] Zhang Qimin,Meng Jiang.Oil and Gas Pipeline Technology[M], Beijing,China Petrochemical Press, 2008.

[2] GB 50253-2014,2014(Design Code for oil pipe).

[3] Yang Xiaoheng.Design and Management of Oil Pipeline[M], China Petroleum University Press, 2005.