A NEW CHARACTERIZED PARAMETER FOR THE PERMEABILITY HETEROGENEITY OF THE RESERVOIR：CALCULATION METHOD OF PERMEABILITY DIVERSITY COEFFICIENT AND ITS SIGNIFICANCE
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摘要: 非均质性是储集层客观存在的特征,非均质性影响油气分布、油田产量、最终采收率以及经济效益。如何有效地表征储层的非均质性,一直是地质学家探讨的问题。目前能够表征储层非均质性的参数很多,但每一种方法都有其优缺点。在长期的科研实践中,提出了储层非均质性的表征新参数——渗透率参差系数,该参数能够比较全面、真实、准确地表征储层的非均质程度。计算方法简便,可对比性强,评价标准容易建立,计算精度不受样品数量多少的影响,实际应用中取得了比较好的效果。Abstract: The heterogeneity is objective character of reservoir and influences hydrocarbon occurrence,oil production,ultimate recovery factor and economic behavior.How to effectually characterize heterogeneity of the reservoir is a problem researched by geologists all the time.There are lots of characterized para-meters for the heterogeneity of the reservoir.But every parameter involves advantage and shortcoming.In the long-term experience of scientific research process,a new parameter to characterize the reservoir heterogeneity is proposed,which is permeability diversity coefficient.The heterogeneity degree of the reservoir can be characterized completely,truly and accurately by this parameter.Calculation method of this parameter is simple and convenient.The comparability is good,the criteria can be easily established and the computational accuracy is not influenced by sample numbers.In the practical application it acquires preferable effects.
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Key words:
- permeability diversity coefficient /
- permeability heterogeneity /
- reservoir /
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