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首页> 外文会议>SPE/IATMI Asia Pacific Oil Gas Conference and Exhibition >Optimal Zonation of Geological Formations and Identification of Pore Structures for Sandstone Reservoirs, Including Variation in Cementation and Fining Sequences
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Optimal Zonation of Geological Formations and Identification of Pore Structures for Sandstone Reservoirs, Including Variation in Cementation and Fining Sequences

机译：砂岩储层地质形成的最佳区划和孔隙结构的鉴定，包括胶结和澄清序列的变异

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Hydraulic Flow Zone Unit (HFZU) analysis for characterising cored formations using the Carman-Kozeny (C-K) equation was first proposed in the late 1980s. More recently this formulation was amended as for diverse formations, the C-K equation typically works in less than 50 percent of the cases. The modified formulation includes a cementation factor to handle C-K non-compliant cases. The objective of this paper is to build on these formulations, covering the full range of geological situations. The study presented compares traditional reservoir characterisation approaches with the latest geological zonation techniques, showing how the full range of relationships may be universally accommodated. Such zonation is the best preparation for optimal reservoir simulation. In particular, it is shown how variable grain size and sorting may be visualised. Results are presented in traditional space, logarithmic permeability vs. porosity, and in model space: hydraulic radius, or reservoir quality index vs. porosity group, porosity fraction divided by the solid fraction. It is shown that the methodology presented can deal with any sandstone (clastics) situation: C-Kcompliant and non-compliant, further categorising variable cementation and other diagenetic features, and including interbedded intervals and fining sequences. The zonation of a geological interval using the methods presented is the best basis for choosing vertical gridding for a dynamic reservoir simulation model, circumventing traditional upscaling, often fraught with inconsistencies. It has been found that the Flow Zone Indicator, a measure of grain size (or pore throat size) is the best parameter for zonation, followed by sorting of grains or pore throats. A Global Characteristics Envelope, encompassing 6 dimensions, is used to further validate final results. The paper presents several case histories, covering fluvial and marine environments and a range of geological depositions and facie, including pore-fill (typically kaolinite). Fields are located offshore Australia and overseas.
机译：首先在20世纪80年代后期提出了使用Carman-Kozeny（C-K）方程进行芯片结构的液压流量区单元（HFZU）分析。最近，这种制剂被修改为各种结构，C-K方程通常以不到50％的情况下工作。修饰的制剂包括处理C-K非柔顺案例的胶结因子。本文的目的是建立在这些配方上，涵盖全方位的地质情况。该研究表明，传统的储层表征方法与最新的地质分区技术，展示了全方位的关系如何普遍容纳。这种分区是最佳储层模拟的最佳准备。特别地，示出了可以可视化晶粒尺寸和分类的程度。结果以传统的空间，对数渗透率与孔隙度以及模型空间：液压半径，或储层质量指标与孔隙率组，孔隙率分数除以固体馏分。结果表明，所呈现的方法可以处理任何砂岩（Clastics）情况：C-K协商和不兼容，进一步分类可变胶质和其他成岩特征，以及包括互贴的间隔和澄清序列。使用所呈现的方法的地质间隔的分区是为动态储层模拟模型选择垂直网格的最佳基础，规避传统升级，往往充满了不一致。已经发现流量区指示器，粒度尺寸（或孔喉部尺寸）的措施是分区的最佳参数，然后进行谷物或孔喉部分选。包含6个维度的全局特性信封用于进一步验证最终结果。本文呈现了几种情况历史，涵盖了河流和海洋环境以及一系列地质沉积和面部，包括孔隙填充（通常是高岭石）。田野位于澳大利亚海外和海外。

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