地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->过刊浏览->天勘2017.1


基于测井资料识别页岩气储层的方法优选——以四川盆地长宁区块下志留统龙马溪组为例
Selection of logging-based shale gas reservoir identification methods: A case study on Lower Silurian Longmaxi Fm in Changning Block, the Sichuan Basin
刘璐1,3 范翔宇1 桑琴2 赵鹏斐1 梁永昌1 崔荣龙3
点击:928次 下载:23次
DOI:10.12055/gaskk.issn.1673-3177.2017.01.006
作者单位:1.西南石油大学石油与天然气工程学院 2.西南石油大学地球科学与技术学院 3.中国石油青海油田公司
中文关键字:四川盆地 长宁地区 早志留世 页岩气储层 测井响应 识别 总有机碳含量 方法优选
英文关键字:Sichuan Basin; Changning Block; Early Silurian; Shale gas reservoirs; Logging response; Identification; Total organic car-bon (TOC); Method selection
中文摘要:

基于测井资料划分识别页岩气储层的方法有多种,但不同方法的适用性及其识别精度均有差别。因此,优选出页岩气储层的区域性识别方法具有重要意义。通过对四川盆地下志留统龙马溪组页岩气储层特征的综合分析比对,建立了页岩气储层与非储层的识别标准,深入剖析了重叠图法、ΔlgR识别法、总有机碳含量计算识别法的原理及适用性,并结合岩心分析资料对各方法进行评价、对比和精度分析,最终优选出常规测井资料组合法结合体积密度TOC指示法作为四川盆地龙马溪组页岩气储层的识别方法。结果表明:建立识别标准可为精确划分识别页岩气储层提供重要依据;自然伽马、密度及声波时差重叠曲线对页岩气储层的识别效果较好,而补偿中子由于受黏土影响较大而不适于作为该区的叠合曲线;孔隙度测井曲线重叠法识别非富有机质页岩气层的效果不佳;体积密度TOC指示法的划分成果能满足精度要求,而自然伽马TOC指示法识别精度相对较差。

英文摘要:

There are various methods available for shale gas reservoir division and identification based on logging data, but they are different in applicability and accuracy, so it's significant to determine a regional shale gas reservoir identification method. In this pa-per, identification criterion of shale gas reservoir and non-reservoir were established by analyzing and comparing comprehensively the characteristics of shale gas reservoirs of Lower Silurian Longmaxi Fm in Changning Block, the Sichuan Basin. Overlapping diagram method, ΔlgR identification method and TOC indication method were investigated in terms of their principles and applicability. Then, all methods were evaluated and compared based on coring analysis data, and their accuracies were also analyzed. It was ultimately determined to take the conventional logging data combination method together with the bulk density TOC indication method as the reservoir identification method of Lower Silurian Longmaxi Fm in Changning Block, the Sichuan Basin. It is shown that this newly es-tablished identification criterion can provide the important basis for accurate division and identification of shale gas reservoirs. Based on the overlapping curves of gamma ray, density and interval transit time, shale gas reservoirs can be better identified. Compensated neutron log is not suitable to be the overlapping curve of this block since it is influenced more by clay. Porosity log overlapping meth-od is not suitable for the identification of organic-poor shale gas reservoirs. The division results of bulk density TOC method are of high accuracy, and gamma-ray TOC indication method is relatively poor in identification accuracy.


读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2018天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第1738574名访问者