西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (4): 117-121.DOI: 10.3863/j.issn.1674-5086.2009.04.025

• 石油与天然气工程 • Previous Articles     Next Articles

STUDY ON GAS/LIQUID SLUG FLOW IDENTIFICATION AND PRESSURE DROP MODEL FOR DEVIATED WELLBORE

HAN Dan-xiu1 LI Xiang-fang1 YIN Ke-tao2 SUI Sheng-li3   

  1. 1.MOE Key Laboratory of Petroleum Engineering,China University of Petroleum，Changping Beijing 102249,China；2.No.2 Oil Production Plant，Qinghai Oilfield Branch，PetroChina,Mangya Qinghai 816400,China；3.Exploration Department，Huabei Oilfield Branch,PetroChina，Renqiu Hebei 062552,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-08-20 Published:2009-08-20

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Abstract: The slug flow model is set up for deviated wellbore，the flow pattern map is plotted and a new way for calculating the pressure drop of slug flow is put forward，The real gas-containing rate and the foam flowing velocity in annular are modified according to experiment，the equation of modified annular slug flow porosity is presented.The comparision of measured result and the calculated value with the new model pressure gradient from 40-time wells of 8 oil wells in a certain field shows the average absolute error of pipe flow and annular slug flow is 5.5% and 6.5% respectively，compared with Beggs-Brill and Ansari models，the error is lower，the model can not only meet the need of engineering calculation，but there is no problems of convergence and religion limit.

Key words: Slug flow, Modeling, Flow-pattern, Pressure drop, annular

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