Accumulation Mechanism of Ultro-Low Permeability Sandstone Reservoir, Huaqing Oilfield, Ordas Basin

Abstract:

Ordos Basin is the second largest sedimentary basin in China with very rich oil and gas resources. The exploration targets are typical reservoirs of low permeability, low pressure and low output. To determine the accumulation mechanism of tight sandstone reservoir, thin section, fluid inclusion, porosity and permeability measurement, numerical calculation were used. The result showed that sandstone became tight while oil filling, buoyant force is too small to overcome the resistance of capillary force. Therefore, overpressure induced by source rock generation is the accumulation drive force.

• Periodical: Advanced Materials Research (Volume 868)
• Pages: 66-69
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.868.66
• Online since: December 2013
• Authors: Hai Yan Hu*
• Keywords: Oil and Gas Accumulation Mechanism, Ordas Basin, Tight Sandstone Reservoir

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