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Fluid Venting System - Hydrocarbon Leakage Indicators
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A new type of gas chimney - "Linear Chimney"  (Planar Chimney)




A newly discovered type of hydrocarbon leakage structures: blade-shaped gas chimneys instead of classical cylindrical ones, is investigated following the preliminary works of Ho (2013; et al. 2012, 2013, 2016). These so called “Linear Chimneys” are hydraulic fractures caused by overpressured hydrocarbon fluids breaching the cover sediments along preferential directions. These directions are dictated by anisotropic stresses induced by faulting in sediments & pre-existing salt-diapiric structures.

Sutieng Ho, hydrocarbon, fluid flow, petroleum system, impermeability of polygonal fault, permeability of polygonal fault, chimney cross cut fault, gas chimney, hydraulic fracture, pockmark, gas conduit, anisotropic stress, fault
Formation of Linear Chimney
Alternative mechanism




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Key words: Sutieng Ho pockmark Sutieng Ho gas chimney seismic Sutieng Ho polygonal fault Sutieng Ho methane authigenic carbonate Sutieng Ho Lower Congo Basin Angola

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