Electrical Resistivity an Aid in Core-Analysis Interpretation
Electrical Resistivity an Aid in Core-Analysis Interpretation
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电阻率有助于岩心分析解释
DOI：
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发表时间：
1947
期刊：
影响因子：
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通讯作者：
G. E. Archie
中科院分区：
文献类型：
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作者：
G. E. Archie
渗透性岩石特性的相关性对于促进我们对岩石结构的一般理解以及以实用的方式帮助检测钻孔中暴露的油藏并有效地开采油藏是重要的。虽然岩石是非均质的，它们的特性之间的关系不能用真正的数学方程来表达，但这些关系确实遵循一定的趋势。发现电阻率与总孔隙度密切相关，电阻率可用于描述钻孔中暴露的不同地层。岩石结构的类型，如果它是很好的固结，即细粒砂岩，粗粒砂岩，鲕状灰岩，等等，有显着的影响很小，尽管不同类型之间的不均匀性和显着的变化。这是幸运的，因为电阻率测井可以以更定量的方式使用。通过电阻率曲线确定的原生水与污染或冲洗岩心中的残余流体的比较，得出了两者之间的经验关系。地表冲洗岩心中的残留水比原地原生水高约20%。剩余油（重力、气油比和粘度几乎不变）也与原生水有关。
A correlation of permeable rock characteristics is important to advance our understanding of rock structure in general as well as help in a practical way to detect oil reservoirs exposed in a bore hole and produce the reservoirs efficiently. Although rocks are heterogeneous and relations between their characteristics cannot be expressed by true mathematical equations, these relations do follow definite trends. The electrical resistivity which is found useful in outlining different formations exposed in a bore hole, is found to be closely related to total porosity. The type of rock structure, provided it is well consolidated, that is, fine-grained sandstone, coarse-grained sandstone, oolitic limestone, et cetera, has remarkably little effect, notwithstanding the heterogeneity and marked variation between different types. This is fortunate because the resistivity log can be used in a more quantitative way. A comparison of connate water in situ, determined by resistivity curves, with residual fluid in contaminated or flushed cores resulted in an empirical relation between the two. The residual water in flushed cores at the surface is approximately 20 per cent higher than the connate water in situ. Residual oil (gravity, gas-oil ratio, and viscosity being nearly constant) is also related to connate water.