The Open Petroleum Engineering Journal

2015, 8 : 354-357
Published online 2015 August 19. DOI: 10.2174/1874834101508010354
Publisher ID: TOPEJ-8-354

Identification of Oil Reservoir Meeting Atypical Archie Phenomenon

Shixiong Yuan , Haimin Guo , Yu Ding and Rui Deng
School of Geophysics and Oil Resources, Yangtze University, No. 111 Daxue Road, Caidian District, Wuhan 430100, P.R. China.

ABSTRACT

According to core data, this paper studies variation of resistivity in different pore structures and wettability conditions. The results show that with the increase of pore structure index m, the resistivity will increase significantly when the saturation is constant. Similarly, with increasing saturation index n, the resistivity will also increase even with the same saturation. With fixed m and n, the calculated formation water saturation will be very high, resulting in hydrocarbon reservoir being ignored. This variation characteristic is significant for the identification of hidden reservoir with atypical Archie formula.

Keywords:

Atypical archie phenomenon, Pore structure index, Saturation index, Wettability, Reservoir conductivity..