We present a simple method to estimate fracture density and drainage distance from borehole data. The method is suitable for boreholes parallel to bedding and is based on the knowledge of fracture spacing observed in both outcrops and experimentally modeled fracture patterns. The method is relevant to long term well behavior as it identifies intervals of high fracture density that also have a long fracture drainage distance. To evaluate the method, the two-dimensional (2D) characteristics of known fracture patterns were compared with the ID data obtained from simulated wells bored through these fracture patterns.

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