Characteristics of Biogenic Silica and Its Effect on Reservoir in Wufeng-Longmaxi Shales,Sichuan Bas

• 作 者: ZHAO Jianhua JIN Zhijun JIN Zhenkui WEN Xin GENG Yikai YAN Caina
• 机 构: College of Geosciences,China University of Petroleum,Petroleum Exploration and Production Research I
• 出 处: Acta Geologica Sinica(English Edition)
• 发表日期: 2015年S1期
• 关键词: reservoir shale quartz dominated genesis minerals silica mixtures typically abun

Further researches of shale petrology indicate that clay minerals are not the dominant mineral in most shale reservoirs.Depending on the reservoir,shales are typically dominated by quartz,calcite,or mixtures of these minerals and the quartz content is usually more than 30%.Besides the detrital quartz,biogenic silica is also an important part of shale reservoir.In order to analyze the genesis of quartz in gas shale and its effect on the reservoir quality,shales

Further researches of shale petrology that that clay minerals are not the dominant mineral in most shale reservoirs. Depending on the reservoir, shales are typically dominated by quartz, calcite, or mixtures of quartz and the quartz content is usually more than 30% .Besides the detrital quartz, biogenic silica is also an important part of shale reservoir.In order to analyze the genesis of quartz in gas shale and its effect on the reservoir quality, shales