Fracture analysis based on remote sensing and its impact on hydrocarbon reservoir study, Bangestan group in the Anjir anticline

Based on the role of fractures in accumulating hydrocarbon reserves in calcareous reservoirs and expanding these reservoirs in Iran’s oil fields, e.g. Bangestan group, geometric- kinematic analysis and accurate estimation of the areas with high fracture density are very important for calculating reserves volume. For clarifying the importance of this issue, Anjir anticline in the southwest of Lorestan basin (having proper outcrop of Bangestan group) in the Zagros folded-thrust belt is selected for this case. In this research, using different remote sensing methods and algorithms, fracture analysis throughout the Anjir anticline was done. Field studies showed all these methods are useful for clarifying fractures in this area. A study of length and distance between fractures showed a high level of structural maturity for the western parts of this anticline compared to the other parts. Density, intensity, and fractal dimension parameters are the highest in the north-western parts of the anticline which seems fault systems with NW-SE trend have the most important role in creating fractures, especially within the Bangestan group. Due to the high adaptability of fracture density and structural maturity of the northwestern part of the Anjir anticline with areas prone to hydrocarbons, the results of this study provide a reliable key for prospecting hydrocarbon reservoirs in other regions targeting the Bangestan group in deeper parts.