地质助操
天然气勘探与开发
2017年3月出版
基于测并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
刘璐13范翔宇丨桑琴2赵鹏斐1梁永昌丨崔荣龙3
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
要基于测井资料划分识别页鼎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。通过对四川盈地下态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
、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
与非储层的识别标准，深入剖析了重叠图法、AlgR识别法、
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
自然伽马、密度及声波时差重叠曲线对页岩气
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；
储层的识别效果较好，而补偿中子由于受黏土影响较大面不适于作为该区的叠合曲线；孔隙度测并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，自然伽马TOC指示法识别精度相对较差。
关键词
四川地
长宁地区
早志留世
页岩气储层
测并响应
识别
总有机碳含量
方法优选
Selection of logging-based shale gas reservoir identification methods: A case study
onLowerSilurianLongmaxiFminChangningBlock,theSichuanBasin
Liu Lu',Fan Xiangyu', Sang Qin', Zhao Pengfei',Liang Yongchang,Cui Ronglong
(1.School ofOil&Natural GasEngineering,SouthwestPetroleumUniversity,Chengdu,Sichuan610500,China; 2.SchoolofGeosciencesandTechnology,SouthwestPetroleumUniversity,Chengdu,Sichuan610500,China;3. PetroChinaQinghaiOilfieldCompany,Dunhuang.Gansu817500,China)
eeeaee 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, lgR 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
method together with the bulk density TOC indication method as the
determined to take the conventional logging data combination
reservoir identification method of Lower
rSilurianLor
tablished identification criterion car on the overlapping curves
sofgamn
rovidethe
dens
neutron log is not suitable to be the overlappin
od is not suitable for the identification of organic-pa
aFmint
ngning Block, the Sichuan Basin, It is shown that this newly es-
division shale
and identification of shale gas reservoirs.Based
can be better identified. Compensated
sevo
of this block since it is influenced more by clay. Porosity log overlapping meth-
shale
ervoirs. The division results of bulk density TOC method are of
aoeeaaooaaeaseoee
Keywords: Sichuan Basin; Changning Block; Early Silurian; Shale gas reservoirs; Logging response; Identification; Total organic car-bon (TOC); Method selection
第一作者简介：刘璐，女，1988年生，助理工程师，硕士研究生；主要从事测井解释及方法研究工作。
通讯作者：范翔宇，1974年生，教授，博士；主要从事油气井岩石力学、测井技术在石油工程中的应用、钻井地质环境描述及灾害防治技术等方面的研究。地址：(610500)四川省成都市新都区西南石油大学石油与天然气工程学院。电话：
（028）
83037050。E-mail:swpu_fxy666@126.com·38·
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