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Application of electrical resistivity tomography methods for Bitumen detection: A case study from Andika, Iran

Publish Year: 1403
Type: Conference paper
Language: English
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EMGBC08_056

Index date: 5 October 2024

Application of electrical resistivity tomography methods for Bitumen detection: A case study from Andika, Iran abstract

detecting and characterizing natural bitumen deposits in Andika County, located in Khuzestan Province in southwestern Iran. This research employs a comprehensive approach combining geophysical surveys with geological data for mapping subsurface bitumen accumulations.The methodology involves conducting five ERT traverses using a dipole-dipole array configuration, with profiles extending 105 meters in length and reaching depths of approximately 15.5 meters. Data processing and inversion employed smoothness-constrained least-squares techniques.Results showed a consistent correlation between high-resistivity zones and bitumen-rich areas. Resistivity values in the range of 700 to 1800 ohm-meters were strongly associated with bitumen deposits, with the highest concentrations exhibiting resistivities above 1250 ohm-meters. Areas with resistivities between 500 to 1000 ohm-meters often indicated bitumen mixed with other sediments. To validate the ERT results, a borehole was drilled at 52 meters along the fourth traverse. The borehole report confirmed high-concentration bitumen layers at depths corresponding to high-resistivity zones in the ERT data, particularly between 3.4-6.2 meters and 7-8.5 meters. Horizontal cross-sections at different depths (6, 10, and 13 meters) were analyzed to understand the lateral continuity of bitumen deposits across the study area.This study also identified the role of geological structures, with fractured zones serving as conduits for bitumen migration, while clay and marl layers acted as barriers. This research demonstrates the effectiveness of integrating ERT with borehole data for accurate mapping and characterization of natural bitumen reserves, providing a strong framework for future exploration efforts and promoting environmentally responsible resource management in bitumen-rich regions

Application of electrical resistivity tomography methods for Bitumen detection: A case study from Andika, Iran Keywords:

Natural Bitumen , Electrical Resistivity Tomography (ERT) , Dipole-Dipole , Two-Dimensional Geoelectric Modeling Andika.

Application of electrical resistivity tomography methods for Bitumen detection: A case study from Andika, Iran authors

Rashid sheykhee

Exploration Department, Dezhparnian Geophysical-Technical Engineering Company, Isfahan-Qom, Iran