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多孔介质期刊
影响因子: 1.061 5年影响因子: 1.151 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

多孔介质期刊

DOI: 10.1615/JPorMedia.v18.i12.60
pages 1231-1238

INVESTIGATING THE EFFECT OF MEDIAN PORE-THROAT DIAMETER ON SPONTANEOUS IMBIBITION

Zhiye Gao
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; Unconventional Natural Gas Institute, China University of Petroleum, Beijing, 102249, China
Qinhong Hu
Department of Earth and Environmental Sciences, University of Texas at Arlington, Arlington, Texas 76019, USA

ABSTRACT

Spontaneous imbibition (SI) plays an important role in the process of oil/gas recovery from fractured reservoirs. Scaling of SI data is a good way to investigate the factors controlling imbibition process and several classic scaling equations have been proposed. However, the effect of pore structure on SI process is insufficiently considered in these scaling equations. This work investigated the effect of median pore-throat diameter (D50) on SI process and proposed new scaling equations to compensate the effect of D50 on SI process. Three types of rocks, including Barnett shale, dolomite, and Indiana sandstone, were used in this study. Our results show that the wettability conditions of these three types of rocks could be determined by comparing scaled water and n-decane imbibition curves. Also, the imbibition curves of different rocks were better correlated after using these new scaling equations, which indicates that D50 as an index of pore structure significantly affects the process of SI.


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