Brine exposure effects on a tertiary North Sea shale

机译：卤水对北海第三页岩的影响

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We present results of tests performed under simulated downhole conditions, where Tertiary shale cores from the North Sea are exposed to different brines. We find a chemically induced strain of the shale, which depends on ion concentration and on ion type, and which is not governed by chemical activity. This contradicts the basic findings of osmotic theory, and can only be explained by incorporating effects of ionic transport and exchange. These results demonstrate the need for a novel approach to modelling of shale -fluid interaction effects on borehole stability.

机译：我们介绍了在模拟井下条件下进行的测试结果，在该条件下，来自北海的第三级页岩岩心暴露于不同的盐水中。我们发现了页岩的化学诱导应变，它取决于离子浓度和离子类型，并且不受化学活性的控制。这与渗透理论的基本发现相矛盾，只能通过结合离子迁移和交换作用来解释。这些结果表明，需要一种新颖的方法来模拟页岩-流体相互作用对井眼稳定性的影响。

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《Rock Mechanics in the National Interest》|2001年|p.1375-1380|共6页
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Eyvind F.Sonstebo; Rune M.Holt;
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中图分类 P6;
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Brine exposure effects on a tertiary North Sea shale

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