岩性油气藏 ›› 2019, Vol. 31 ›› Issue (1): 57–68.doi: 10.12108/yxyqc.20190107

• 油气地质 • 上一篇    下一篇

中国南方3套海相页岩气成藏条件分析

何贵松, 何希鹏, 高玉巧, 张培先, 万静雅, 黄小贞   

  1. 中国石化华东油气分公司 勘探开发研究院, 南京 210011
  • 收稿日期:2018-09-04 修回日期:2018-11-03 出版日期:2019-01-18 发布日期:2019-01-18
  • 第一作者:何贵松(1988-),男,工程师,主要从事中国南方海相页岩气富集规律与勘探评价方面的研究工作。地址:(210011)江苏省南京市鼓楼区热河南路37号。Email:heguisong001@163.com。
  • 基金资助:
    国家重大科技专项“彭水地区常压页岩气勘探开发示范工程”（编号：2016ZX05061）和中国石化科技开发部项目“渝东南盆缘转换带页岩气富集主控因素研究”（编号：P18057-2）联合资助

Analysis of accumulation conditions of three sets of marine shale gas in southern China

HE Guisong, HE Xipeng, GAO Yuqiao, ZHANG Peixian, WAN Jingya, HUANG Xiaozhen   

  1. Research Institute of Exploration and Development, East China Branch of Sinopec, Nanjing 210011, China
  • Received:2018-09-04 Revised:2018-11-03 Online:2019-01-18 Published:2019-01-18

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摘要： 为了揭示中国南方3套海相页岩的勘探潜力差异，利用黔南、渝东南和湘中地区典型钻井的岩心实验分析、钻井、压裂测试等资料，从先期建造和后期改造等方面对成藏条件进行对比。结果表明：①五峰组-龙马溪组为台内坳陷深水陆棚相硅质页岩型，生烃潜力大和储层物性好，含气量和地层压力均较高，为最有利勘探开发层系；优质页岩厚度、保存条件和可压性均是选区评价的重点。②九门冲组为被动大陆边缘深水陆棚相粉砂质-硅质页岩互层型，生烃潜力大，但热成熟度高，物性较差，保存条件复杂，埋深大，为重要接替层系；热演化程度、构造稳定性和埋深均是选区评价的重点。③大隆组为裂陷盆地深水台凹泥岩-灰质泥岩互层型，生烃潜力大、物性好，但夹层多，黏土含量高，顶底板封盖性差，含气量较低，为潜在有利层系；有利相带、页岩连续厚度和可压性均是选区评价的重点。④川中、川南、川东南地区的五峰组-龙马溪组，川中、黔南、宜昌地区的九门冲组，湘中涟源地区的大隆组均是页岩气勘探开发有利区。

关键词: 页岩气, 保存条件, 泥页岩类型, 成藏条件, 五峰组-龙马溪组, 九门冲组, 大隆组, 中国南方

Abstract: In order to reveal the exploration potential differences of three sets of regional marine shale in southern China,the accumulation conditions were compared from the aspects of early transformation and post-reformation by using the data of core experiment analysis,drilling,fracturing test of typical wells in southern Guizhou, southeastern Chongqing and central Hunan area. The results show that:(1)Wufeng-Longmaxi Formation is siliceous shale in deep continental shelf of depression basin. It is the most favorable exploration and development layer with excellent potential for hydrocarbon generation,superior reservoir physical properties,high gas content and high formation pressure. High-quality shale thickness,preservation conditions and compressibility are the focus of the selection and evaluation of shale gas.(2)Jiumenchong Formation is interbedded silty-siliceous shale in deep continental shelf of the passive continental margin. It is an important successor layer for shale gas exploration with great potential for hydrocarbon generation,high thermal maturity,relatively poor physical properties,complicated storage conditions and deep burial depth. Thermal evolution degree,structural stability and burial depth are the focus of the selection and evaluation of shale gas.(3)Dalong Formation is interbedded mudstone-calcareous mudstone in deep water platform of rift basin. It is potential favorable layer with great potential for hydrocarbon generation,good physical properties,many interlayers,high clay mineral content,poorly capped roof and floor rocks,and low gas content. Favorable facies zones,continuous thickness of organic-rich shale and compressibility are the focus of the selection and evaluation of shale gas.(4)Wufeng-Longmaxi Formation in central,southern and southeastern Sichuan,Jiumenchong Formation in central Sichuan,southern Guizhou and Yichang areas,and Dalong Formation in Lianyuan area of central Hunan are favorable areas for shale gas exploration and development.

Key words: shale gas, preservation conditions, shale type, accumulation conditions, Wufeng-Longmaxi Formation, Jiumenchong Formation, Dalong Formation, southern China

中图分类号: 

  • TE122
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