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Edition and Publication

Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Summary and Thinking of Safe Operation of Certain Western Crude Oil Pipeline in Winter

Author of the article:Sun Fafeng, Tian Xudong, Shang Yi, Zhang Bingchen, Chen Di

Author's Workplace：PetroChina Beijing Oil and Gas Control Center

Key Words：Western crude oil pipeline; Batch transportation; Blending transportation; Heating mode; Heat exchanging mode; Energy saving and consumption reducing

Abstract：In order to reduce potential safety hazard and energy consumption of pipeline operation in winter, certain western crude oil pipeline company has taken a series of measures in optimizing operational environment and improving oil properties, such as shifting batch transportation to blending transportation of four crude oils, starting heat furnace at initial station instead of that of each heating stations and decreasing output temperature from 50-55°C to 35-40°C (by waste heat recovery). The advantages of blending transportation and recovery of waste heat are concluded through comparing blending transportation with batch transportation and comparing heat medium exchanger with oil-oil heat exchanger. These measures are beneficial to safe pipeline operation in winter (increasing safety margin of pipeline shutdown time thus avoiding abnormal fluctuation of freezing point), and can greatly reduce pipeline energy consumption. In particular, blending transportation of four kinds of oils can also provide a theoretical support for transporting crude oil by pipeline at normal temperature in winter.