Organic-rich gas bearing shale,Reservoir characteristics,Carbonaceous shale,Silicon shale,Gas contents,"/> 四川盆地志留系龙马溪组优质页岩储层特征与开发评价

天然气地球科学

• 天然气开发 • 上一篇    下一篇

四川盆地志留系龙马溪组优质页岩储层特征与开发评价

贾成业 ,贾爱林 ,韩品龙 ,王建君 ,袁贺 ,乔辉   

  1. 1.中国石油勘探开发研究院,北京 100083;
    2.中国石油浙江油田公司勘探开发研究院,浙江 杭州 310000
  • 收稿日期:2016-10-19 修回日期:2017-07-14 出版日期:2017-09-10 发布日期:2017-09-10
  • 作者简介:贾成业(1980-),男,安徽太湖人,高级工程师,博士,主要从事页岩气储层评价和开发技术研究. E-mail:cyjia@petrochina.com.cn.
  • 基金资助:
    国家科技重大专项“大型油气田及煤层气开发”(编号:2016ZX05062002;2016ZX05015);中国石油天然气股份有限公司科学研究与技术开发项目“页岩气钻采工程现场试验”(编号:2014F-4701-03)联合资助.
     

Reservoir characterization and development evaluation of organic-rich  gas-bearing shale layers in the Lower Silurian Longmaxi Formation,Sichuan Basin

Jia Cheng-ye,Jia Ai-lin,Han Pin-long,Wang Jian-jun,Yuan He,Qiao Hui   

  1. 1. PetroChina Research Institute of Petroleum Exploration & Development,Beijing 100083,China;
    2.Research Institute of Exploration & Development of PetroChina,Zhejiang Oilfied Company,Hangzhou 310000,China
  • Received:2016-10-19 Revised:2017-07-14 Online:2017-09-10 Published:2017-09-10

摘要:

随着页岩气国家级示范区的建设,中国页岩气进入规模开发阶段;到2016年12月,长宁-威远、昭通和涪陵国家级页岩气示范区实现年产气量79×108m,到2030年页岩气规划年产量达到(800~1 000)×108m,展现出良好的发展前景。四川盆地龙马溪组地层厚达300m左右,进一步识别出优质页岩段,评价优质页岩储层特征是开发阶段的首要任务。依据笔石带特征和沉积相演化,将龙马溪组划分为龙一、龙二2个层段;志留纪早期深水陆棚沉积环境控制了优质页岩的空间分布,岩心观察识别出龙一段底部黑色炭质页岩和硅质页岩是优质页岩发育的有利岩相,优质页岩具有高有机碳含量、高脆性矿物含量、高含气量的特征;优质页岩段地质储量丰度集中,平均储量丰度达到1.85×108m/km2,是页岩气规模化开发的有利层位。
 
 

关键词: 四川盆地, 优质页岩, 储层特征, 炭质页岩, 硅质页岩, 含气量

Abstract:

With construction of three pilotdevelopment blocks,shale gas in China shows glomming prospects and is now at the stage of development evaluation.To diagnose the organic-rich gas-bearing layers from the Lower Silurian Longmaxi Formation with total thickness of 300m and evaluate its reservoir characteristics is the primary work at this stage.Based on characteristics of fauna and transition of facies,Longmaxi Formation can be divided into two units (S1l1,S1l2).Black carbonaceous shale and silicon shale at the bottom of Longmaxi Formation are organic-rich gas-bearing shale layers.These gas-bearing shales have characteristics of high total organic contents,brittle mineral contents and gas contents and show development patterns of two sets of carbonaceous shale zones mingled with one set of silicon shale zone.Depositional environment of deep water shelf controls the space distribution of organic-rich gas-bearing shale layers.Organic-rich gas-bearing layers have characteristics of high OGIP and are the favorable target for shale gas development.
 

Key words: Organic-rich gas bearing shale')">

中图分类号: 

  • TE122.1

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