Wettability of Carbonate Reservoir Rocks: A Comparative Analysis

Applied Sciences

Abouzar Mirzaei-Paiaman¹  Seyyed Ali Ghoreishi²  Mohsen Faramarzi-Palangar²  Behzad Ghanbarian³ 

[1]Center for Petroleum Studies (CEPETRO), University of Campinas (UNICAMP), Campinas 13083970, SP, Brazil

[2]Institute of Petroleum Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran

[3]Porous Media Research Lab, Department of Geology, Kansas State University, Manhattan, KS 66506, USA

关键词: wettability;    relative permeability;    capillary pressure;    rock quality;    special core analysis;   

DOI  :  10.3390/app12010131

来源: DOAJ

【 摘 要 】

Various methods have been proposed for the evaluation of reservoir rock wettability. Among them, Amott–Harvey and USBM are the most commonly used approaches in industry. Some other methods, such as the Lak and modified Lak indices, the normalized water fractional flow curve, Craig’s triple rules of thumb, and the modified Craig’s second rule are based on relative permeability data. In this study, a set of capillary pressure curves and relative permeability experiments was conducted on 19 core plug samples from a carbonate reservoir to evaluate and compare different quantitative and qualitative wettability indicators. We found that the results of relative permeability-based approaches were consistent with those of Amott–Harvey and USBM methods. We also investigated the relationship between wettability indices and rock quality indicators RQI, FZI, and Winland R35. Results showed that as the rock quality indicators increased, the samples became more oil-wet.

【 授权许可】

Unknown