Asphaltenes, Water Films, and Wettability Reversal

被引：58

作者：

Kaminsky, R. ^{[1
]}

Radke, C. J. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Dept Chem Engn, Chem Engn, 201G Gilman Hall, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem Engn, UC Berkeley, Berkeley, CA 94720 USA

来源：

SPE JOURNAL | 1997年 / 2卷 / 04期

关键词：

D O I：

10.2118/39087-PA

中图分类号：

TE [石油、天然气工业];

学科分类号：

0820 ;

摘要：

We present a transport model for asphaltene diffusion from an oil/water interface through a water film followed by adsorption at a solid/water interface. Using a Langmuir adsorption isotherm, the effects of asphaltene aqueous solubility and adsorption constant K on equilibration time are established For K greater than 1 nm and for asphaltene solubilities down to 0.1 ppb, adsorption equilibrium, taken to be 1 mg/m(2), occurs within a few hours. Negligible asphaltene solubility does not explain why a water film prevents asphaltene adsorption and wettability alteration in reservoir rock.

引用

页码：485 / 493

页数：9

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