西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 173-177.

• 石油机械工程及其他 • Previous Articles     Next Articles

Analysis of Characteristics of the Oil Purging Water System in Horizontal Tube

XU Guang-li 1 ZHANG Guo-zhong 1 ZHAO Shi-hao 1 WANG Shuai-hua 2
  

  1. 1. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong 266555, China;
    2. Department ofOffshore Engineering, China Petroleum Offshore Engineering Co. Ltd, Qingdao, Shandong 266555, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

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Abstract: We analyze the characteristics of the laminar oil purging water system in horizontal tube, according to water and oil momentum equations and oil mass conservation equation，and the water height gradient model was obtained. Both critical water height what denotes the water height corresponding to the onset of a water plug and the profile of oil-water interface are theoretical analyzed. The results show that the former should depend on the pipe diameter，oil superficial velocity and physical properties, among which the pipe diameter and oil superficial

velocity are two main factors. While the latter relies on the residual water volume in horizontal tube, initial of onset of a water plug, the profile of oil-water interface, and the physical parameters.

Key words:

oil purging water, interface profile, water height gradient, critical water height, oil-water stratified flow, water plug

CLC Number: