松辽盆地古中央隆起带基底浅变质岩岩性测井解释及其应用  

Lithology logging interpretation and application of the shallow metamorphic rock in the basement of the ancient central uplift belt of Songliao Basin

作　　者：王春燕[1] 史鹏宇 李晶[1] 覃豪[1] 金雪英[1] 杨黎明[1] WANG Chunyan;SHI Pengyu;LI Jing;QIN Hao;JIN Xueying;YANG Liming(Exploration and Development Research Institute of Daqing Oilfield Co Ltd.,Daqing 163712,China;College of the Earth Sciences in Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]东北石油大学地球科学学院,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2020年第2期125-132,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司“十三五”重大科技项目“松北深层天然气富集规律、勘探技术研究与规模增储”(2016E-0203)。

摘　　要：为了确定古中央隆起带基底岩性分布特征、支撑勘探评价工作,通过岩心刻度测井,总结了基岩测井响应特征并确定了测井分类方案。首先应用K—A图解判断原岩;其次应用自然伽马—中子密度孔隙度差识别岩石成分,应用FMI图像模式判别结构、构造;最后采用“原岩+成分+结构”的方法确定岩石类型,可识别9种岩石类型,解释符合率达92.6%,落实了岩性平面分布特征。针对优势岩性部署了4口井,其中2口井试气获得工业气,1口井试气获得低产气,1口井试气为干层,取得了良好的应用效果。In order to determine the distribution characteristics of the lithology in the basement of the ancient central uplift belt and provide the support for the exploration evaluation,by means of the core calibration logging,the logging response characteristics of the bedrock were summarized and the logging classification schemes were determined.Firstly with the help of K-A illustrating diagram,the primary rocks were identified;secondly by means of the natural-gamma and neutron-density porosity difference,the rock compositions were discriminated,and moreover by applying FMI image mode,the construction and structure were judged;finally by adopting the method of“Protorock+Component+Structure”,the rock types were defined,nine types of the rock types can be identified,the interpretation coincidence ratio is up to 92.6%,and furthermore the distribution characteristics of the planar lithologies were ensured.For the predominant lithologies,four wells were drilled,in which two of them were tested and achieved the industrial gas flow,one of them was tested and obtained low-yield gas flow and one well was dry,thus much better applied effects were achieved.

关 键 词：古中央隆起带 浅变质岩 岩性识别 松辽盆地 

分 类 号：P631[天文地球—地质矿产勘探]