Geometric Analysis of Faults and Fractures of Vizenhaar Oil-rich Anticline using Remote Sensing Techniques

Document Type : Original Research

Author

Department of Geology, Islamic Azad University of Khorramabad, Khorramabad, Iran

10.30495/geotech.2021.689469

Abstract

Geometric interpretation and identification of surface faults and fractures that exist in an area based on remote sensing techniques help detect these terrains, and the maps of these areas can be used as a database for regional identification and planning. The aim of this study was to identify and extract fractures and faults of Vizenhaar Anticline in the southwest of Lorestan Province located in western Iran. For this purpose, the lineaments in this area were identified using 2013 images of Landsat 8 Operational Land Imager (OLI) sensor (rows 37 and pass 166) and application of directional filters in ENVI software and Lineament Extraction algorithm in Geomatica software. Afterward, by comparing the lineaments with the constructed band combinations, the digital elevation model (DEM) as well as a geological map of the study region, the faults and fractures were distinguished and their map prepared in Geographic Information System (ArcGIS) software environment. According to the results, the direction of most fractures and faults in the region is northeast-southwest. Also, ISODENSITY mapping of faults and fractures in the region shows that the highest density of faults and fractures is in the west, center, and east of the anticline. Therefore, these areas can be important considering the significant and undeniable role of fractures and faults in hydrocarbon properties and migration.

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