新疆石油地质

›› 2012, Vol. 33 ›› Issue (4): 1-1.

• 论文 •    

皖南地区荷塘组页岩气成藏条件及有利区预测

陈 洁a，朱炎铭a，b，李 伍a，陈尚斌a，b   

  1. (中国矿业大学 a. 资源与地球科学学院;b. 煤层气资源与成藏过程教育部重点实验室,江苏 徐州 221116)
  • 出版日期:2019-01-01 发布日期:1905-07-11

Shale Gas Accumulation Conditions and Favorable Area Prediction of Hetang Formation in South Anhui Province of China

CHEN Jie a, ZHU Yanminga,b, LI Wua, CHEN Shangbina,b   

  1. (1.China University of Mining and Technology, a.School of Resources & Earth Science, b. MOE Key Laboratory of Coalbed Methane Resource & Reservoir Formation Process, Xuzhou, Jiangsu 221116, China)
  • Online:2019-01-01 Published:1905-07-11

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摘要： 通过野外实地观察、样品采集及系列实验分析发现，皖南下扬子区下寒武统荷塘组页岩在研究区内分布广泛，沉积厚度大（约60~360 m），有机质丰度高（达0.5%~7.2%），热演化程度较高（Ro为2.0%~5.5%），达高-过成熟阶段晚期，具有较好的生烃潜力；储集层孔隙度平均为0.716%，为游离气提供了一定的储存空间，等温吸附实验测得吸附气含量平均为0.443 cm3/g，表明研究区页岩具有较强的吸附能力。通过综合研究认为，石台—黟县—泾县—宁国一带为今后的有利勘探区，分布面积约9 100 km2

Abstract: The field observation, sampling and lab analysis indicate that the shale sediment of the Hetang formation of Lower Cambrian in Lower Yangtze region of South Anhui province is widely distributed in the study area, with a thickness of 60~360 m, organic carbon content of 0.5%~7.2%, thermal evolution degree of 2.0%~5.5%, possessing better hydrocarbon?generating potential. The mercury injection experiment shows that its average porosity reaches 0.716%, providing some storage spaces for the free gas. The isothermal adsorption experiment shows that the shale in study area has strong adsorption ability for the adsorbed gas averaging 0.443 cm3/g. It is suggested that the regions of related Shitai?Yixian?Jingxian?Ningguo with an area of 9 100 km2 will be the favorable areas for shale gas exploration

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