岩电参数对储层饱和度计算精度的影响分析

doi:10.11885/j.issn.1674-5086.2012.10.11.01

摘要/Abstract

摘要：

基于Archie 公式，分析了m，n 变化时给饱和度造成的影响，推导了m，n 所携带的误差传递给饱和度的误差
公式；结合疏松砂岩、中等砂岩、致密砂岩、砾岩、凝灰岩、角砾岩、玄武岩、安山岩、英安岩和流纹岩等10 种岩性，阐
述了m，n 的分布区间、变化幅度及其对计算储层含水饱和度的影响。从而得出在每种岩性内，m 的分布范围、变化
幅度均大于n，m 对饱和度的影响强于n；当m 的误差为±0.2 时，储层含水饱和度的计算误差基本大于5%，最大值甚
至能达到30%；而当n 的误差为±0.2 时，储层含水饱和度的计算误差基本小于5%。明确了m，n 对饱和度的影响程
度及给饱和度传递误差的大小，对复杂储层饱和度的精确评价具有一定的理论和实践意义。

关键词: 储层评价, Archie 公式, 岩电参数, 饱和度, 误差分析

Abstract:

Abstract：Based on the Archie formula，the effect of variable m and n on the saturation is analyzed，and the error formula of
calculating the water saturation of reservoirs caused by the error of m and n is derived. On the basis of the loose sandstone，
medium sandstone，tight sandstone，conglomerate，tuff，breccia，basalt，andesite，dacite and rhyolite，this paper first analyzes
the distribution range and change amplitude of m and n. Secondly，the impact of m and n on the calculation of the water
saturation of reservoirs is discussed. With regard to each lithology，the distribution range and change amplitude of m is greater
than those of n. Therefore，compared with n，the effect of m on the saturation is stronger. When the error of m is ±0.2，the
error in the calculation of the water saturation of reservoirs is almost all above 5%，and the maximum is even more than 30%.
Meanwhile，when the error of n is ±0.2，the error in the calculation of the water saturation of reservoirs is almost all below 5%.
The influence of m and n on the saturation is determined，and the error in the calculation of the water saturation of reservoirs
caused by the error of m and n are calculated. It is theoretically and practically significant to the precise calculation of saturation
of complex reservoirs.

Key words: Key words：reservoir evaluation, Archie formula, rock electrical parameters, saturation, error analysis

李雄炎，秦瑞宝，刘春成. 岩电参数对储层饱和度计算精度的影响分析[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.10.11.01.

Li Xiongyan, Qin Ruibao, Liu Chuncheng. Analyzing the Effect of Rock Electrical Parameters on the Calculation of
the Reservoir Saturation[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.10.11.01.

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