西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (6): 126-130.DOI: 10.3863/j.issn.1000-2634.2008.06.030

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

CONSTRUCTING METHOD AND APPLICATION OF RESERVOIR CAPILLARY PRESSURE CURVE

LIU Xiao-peng1 XIAO Liang2 ZHANG Wei3   

  1. 1.Geological Exploration and Development Research Institute，SichuanChangqing Drilling and Exploration Engineering Corporation，CNPC，Chengdu Sichuan 610051，China；2.Faculty of Petroleum Resources，Xi′an Shiyou University，Xi′an Shaanxi 710065，China；3.Log Interpretation Center，Oilfield Services Limited Company，CNOOC，Beijing 101149，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

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Abstract: In order to continuously gain reservoir capillary pressure curve to evaluate reservoir pore structure，aiming at the proplem that the reservoir capillary pressure data are very finite，a new method constructing capillary pressure curve by using conventional porosity and permeability is put forward and the constructing model of capillary presusre curve is set up based on 169 cores mercuryinjection data analysis.The accuracy of the，model is verified by means of the correlation with practical core mercuryinjection capillary pressure curve，it is proposed that optimal comprehensive physical property is used to continuously construct capillary pressure curve.The curve is applied in practical reservoir evaluation to obtain mean capillary radius，maximun capillary radius and reservoir water saturation，as well as to evaluate the pore structure of the reservoir，the correlation of core analysis and well logging model interpretation indicates that the result calculated with the new model is reliable.

Key words: capillary pressure curve, porosity, permeability, application, pore structure, water saturation

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