成都理工大学学报（自然科学版）Issue(5)：529-537,9.DOI:10.3969/j.issn.1671-9727.2014.05.01
桂中盆地页岩气地质条件及潜力分析
Geological conditions and exploration potential of shale gas in Central Guangxi basin,China
摘要
Abstract
The purpose of this study is concentrated on the geological conditions forming shale gas and the analysis of exploration potential in Central Guangxi basin.The authors investigated the shale gas producing characteristics from a well in Central Guangxi basin and analyzed TOC and Ro of shale cores from this well.The well lies near Baimang of Liucheng County,Guangxi.The gas comes from a silt sand interlayer in the Lower Carboniferous Simen Formation (C1s)at a depth of about 248.33 m.The amount of gas released from the well is estimated at 3000 ~4000 m3 per day. This further demonstrates that there is good shale gas potential.The TOC mass fraction of the shale samples from this well is 0.54%~1.59%with the average 1.07%.The reflection of bitumen (Rb)in the sandstone samples is 1.64%~2.10%.The mud shale hydrocarbon source rocks and the thermal crack of bitumen in sandstones ensure the supply of gases from the mud shale sequences.The Devonian and Carboniferous dark mud shale sequences are extensively developed with relatively big thickness.They are high quality hydrocarbon source rocks.After a long-term hydrocarbon exploration,many wells discover the existence of shale gas,demonstrating a good prospect for shale gas exploration.The thick mud shale and sandstone interlayers with high porosity contribute to the reservoirs of shale gas.关键词
桂中盆地/泥盆系/石炭系/页岩气Key words
Central Guangxi basin/Devonian/Carboniferous/shale gas分类
能源科技引用本文复制引用
周雁,朱东亚,孟庆强,张殿伟,沃玉进..桂中盆地页岩气地质条件及潜力分析[J].成都理工大学学报（自然科学版）,2014,(5):529-537,9.基金项目
国家自然科学基金资助项目（41372149）；国家重点基础研究发展计划（973）项目（2012CB214806）；国家科技重大专项 （）
