Classification Study on Relative Permeability Curves - World Journal of Engineering and Technology

WJET > Vol.6 No.4, November 2018

World Journal of Engineering and Technology

Volume 6, Issue 4 (November 2018)

ISSN Print: 2331-4222 ISSN Online: 2331-4249

Google-based Impact Factor: 0.80 Citations

Classification Study on Relative Permeability Curves ()

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Download as PDF (Size: 4098KB) PP. 723-737

DOI: 10.4236/wjet.2018.64047 843 Downloads 2,276 Views Citations

Author(s)

Pingzhi Gong, Bin Liu, Junting Zhang, Zheng Lv, Guohao Zhang

Affiliation(s)

CNOOC China Limited, Tianjin Branch, Tianjin, China.

ABSTRACT

The classification method of relative permeability curves is rarely reported, when relative permeability curves are applied; if the multiple relative permeability curves are normalized directly, but not classified, the calculated result maybe cause a large error. For example, the relationship curve between oil displacement efficiency and water cut, which derived from the relative permeability curve in LD oilfield is uncertain in the shape of low water cut stage. If being directly normalized, the result of the interpretation of the water flooded zone is very high. In this study, two problems were solved: 1) The mathematical equation of the relationship between oil displacement efficiency and water cut was deduced, and repaired the lost data of oil displacement efficiency and water cut curve, which solve the problem of uncertain curve shape. After analysis, the reason why the curve is not available is that relative permeability curves are not classified and optimized; 2) Two kinds of classification and evaluation methods of relative permeability curve were put forward, the direct evaluation method and the analogy method; it can get the typical relative permeability curve by identifying abnormal curve.

KEYWORDS

Relative Permeability Curve, Displacement Efficiency, Classification, Correction

Share and Cite:

Gong, P. , Liu, B. , Zhang, J. , Lv, Z. and Zhang, G. (2018) Classification Study on Relative Permeability Curves. World Journal of Engineering and Technology, 6, 723-737. doi: 10.4236/wjet.2018.64047.

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