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Spatial-Statistical Analysis of Oil and Gas Pipelines Using the Frequency Ratio Model To Assess Environmental Hazard Exposure
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Rahim Nazari   , Mostafa KaboliZadeh * , Kazem Rangzan |
| Shahid Chamran University of Ahvaz |
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Abstract: (20 Views) |
The oil and gas industry, as the lifeblood of the economy, has always faced the challenge of pipeline risk management. Although numerous studies have assessed the environmental hazards, the simultaneous spatial-statistical analysis of multiple environmental risks using quantitative methods in Iran's oil-rich regions has received less attention. This study employed three analytical methods: Relative Frequency Analysis (RFA), Kernel Density Estimation (KDE), and Spatial Regression.The Relative Frequency Analysis revealed that the highest proportion of pipeline fractures has occurred in areas with high land subsidence potential (0.305) and low earthquake risk (0.76). The Gaussian-based Kernel Density Analysis identified fracture hotspots in southern Masjed Soleyman, overlapping with subsidence-prone zones. In the KDE analysis, 68% of fractures were concentrated in the southern regions of Masjed Soleyman, with an optimal bandwidth of 1.06 km (calculated using Silverman’s method) and a model uncertainty of ±5%. The Spatial Regression results indicated a significant impact of earthquakes (coefficient: 0.461, p < 0.01) and land subsidence (coefficient: 0.357, p < 0.01) on pipeline fractures. The model's coefficient of determination (R²) was 0.295, the F-statistic was 17.73 (p < 0.001), and VIF values ranged between 1.04 and 2.36 (indicating no severe multicollinearity). The findings demonstrate that land subsidence and earthquakes are among the most critical threats to pipelines in the region. The results can serve as an effective tool for pipeline planning, design, and management, helping to mitigate the environmental hazard-related damages. By integrating the spatial-statistical methods, this study provides a comprehensive framework for pipeline risk assessment, that is used in decision-making in oil-rich regions.
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| Keywords: Frequency Ratio Model, Oil and Gas Pipelines, Environmental Hazards, Spatial Analysis, Masjed Soleyman |
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Full-Text [PDF 1642 kb]
(13 Downloads)
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Type of Study: Research |
Subject:
GIS
Received: 2025/03/8 | Accepted: 2025/06/8 | ePublished ahead of print: 2026/01/14 | Published: 2026/01/14
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