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Mechanism study and analysis of blockage of Longgang Reef Gas Reservoirs
Author of the article:ZHENGLIANG DONG
Author's Workplace:Sichuan salt geological drilling unit
Key Words:Longgang Reef Gas Reservoir;plugging mechanism;simulated well conditions; microscope observation.
Abstract:For amount of black solid or pasty dirt blockaged throughout and reservoir in the late large of developed wells in Longgang reef gas reservoirs in Sichuan Basin, resulting in gas production drastically reduced, acidification status short period, to carry out the blockage mechanism analysis, proven cause of the blockage , and targeted prevention recommendations made Gouwu. In the blockage component analysis based on the combined XRD analysis by scanning electron microscopy analysis of the microscopic morphology observed Gouwu relationship between the components of the combination and combined state identified the main factors affecting the blockage; well in simulated conditions under control variables of the above factors were analyzed to study the various factors on the formation of blockages and proved a major role in blocking mechanism, and accordingly put forward Gouwu prevention recommendations.
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