An integrated reservoir characterization study is achieved on the Early to Middle Miocene Kaimiro Formation in the Taranaki Basin, New Zealand, to identify the quality of the formation as a potential reservoir. The Kaimiro Formation is a section of the Kapuni Group in the Taranaki Basin, consisting mainly of sandstone and a range of coastal plain through shallow marine facies. Several methods were accomplished for this study: petrophysical evaluation, sedimentological and petrographical descriptions and well log analysis. Based on the petrophysical study, the Kaimiro Formation is interpreted to have several flow units ranges up to 15 μm. Higher RQI and FZI reflect potential reservoir, while the pore size and pore throat diameters (r35) are found to be within the range of macro- and megapores, on the contrary to macropores related to poor reservoir quality concentrated in Tui-1 well. This is in good agreement with other measurements that show the formation is exhibited to be a good promising reservoir as the formation comprises a good average porosity of 19.6% and a good average permeability of 879.45 mD. The sedimentological and petrographical studies display that several diagenetic features have been affecting the formation such as compaction, cementation, dissolution and the presence of authigenic clay minerals. Although these features commonly occur, the impact on the reservoir properties and quality is minor as primary and secondary pores are still observed within the Kaimiro sandstone. Moreover, well log analysis is also completed to further ensure the hydrocarbon potential of the formation through a qualitative and quantitative analysis. It has been confirmed that the Kaimiro Formation is a promising reservoir containing several flow units with higher possibility for storage capacity.

中文翻译：

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新西兰塔拉纳基盆地Kaimiro组的综合储层表征和流体流动分布

在新西兰塔拉纳基盆地的中新世早期至中新世凯米罗地层进行了综合储层表征研究，以确定该地层的质量作为潜在储层。Kaimiro组是塔拉纳基盆地Kapuni组的一部分，主要由砂岩和通过浅海相的一系列沿海平原组成。这项研究完成了几种方法：岩石物理评估，沉积学和岩石学描述以及测井分析。根据岩石物理研究，Kaimiro组被解释为具有几个流动单元，范围最大为15μm。较高的RQI和FZI反映了潜在的储层，而发现孔径和孔喉直径（r35）在大孔和大孔范围内，相反，与储层质量差有关的大孔则集中在吐1井。这与其他测量结果高度吻合，其他测量结果表明该地层具有良好的储层潜力，因为该地层的平均孔隙度为19.6％，平均渗透率为879.45 mD。沉积学和岩石学研究表明，几种成岩作用已经影响了地层，例如压实，胶结，溶解和自生粘土矿物的存在。尽管这些特征普遍存在，但由于仍在Kaimiro砂岩中仍观察到初级和次级孔隙，因此对储层性质和质量的影响很小。此外，还完成了测井分析，以通过定性和定量分析进一步确保地层的烃潜力。已经证实，Kaimiro组是一个有前途的储层，其中包含多个流动单元，具有更高的储存能力。