Fracture attribute scaling and connectivity datasets from analogue systems are widely used to inform sub-surface fractured reservoir models in a range of geological settings. However, significant uncertainties are associated with the determination of reliable scaling parameters in surface outcrops. This has limited our ability to upscale key parameters that control fluid flow at reservoir to basin scales. In this study, we present nine 1D-transect (scanline) fault and fracture attribute datasets from Middle Devonian sandstones in Caithness (Scotland) that are used as an onshore analogue for nearby sub-surface reservoirs such as the Clair field, west of Shetland. By taking account of truncation and censoring effects in individual datasets, our multiscale analysis shows a preference for power-law scaling of fracture length over 8 orders of magnitude (10⁻⁴ to 10⁴ m) and kinematic aperture over 4 orders of magnitude (10⁻⁶ to 10⁻² m). Our assessment of the spatial organization (clustering and topology) provides a new basis for up-scaling fracture attributes collected in outcrop- to regional-scale analogues. We show how these relationships may inform knowledge of geologically equivalent sub-surface fractured reservoirs.

中文翻译：

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泥盆纪Orcadian盆地的裂缝属性定标和连通性对地质等效的地下裂缝性储层有影响

来自模拟系统的裂缝属性缩放和连通性数据集被广泛用于在一系列地质环境中为地下裂缝储层模型提供信息。然而，显着的不确定性与地表露头中可靠的结垢参数的确定有关。这限制了我们对控制储层到盆地尺度的流体流量的关键参数进行扩展的能力。在这项研究中，我们提供了来自苏格兰凯斯内斯中泥盆纪砂岩的9个1D断面（扫描线）断层和裂缝属性数据集，这些数据集被用作陆上类似物，例如设得兰河以西的Clair油田的陆上类似物。考虑到单个数据集中的截断和检查效果，^-4 至10 ⁴  m）和超过4个数量级（10 ^-6至10 ^-2  m）的运动孔径。我们对空间组织（聚类和拓扑结构）的评估为扩大从露头到区域尺度类似物中收集的裂缝属性提供了新的基础。我们展示了这些关系如何为地质等效的地下裂缝性储层提供知识。