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松科二井东孔营城组火山岩测井响应特征及岩性评价
Received:March 12, 2019  Revised:September 06, 2019  点此下载全文
引用本文:ZHAO Jinhuan,ZOU Changchun,WANG Wenshi,ZHANG Xiaohuan,ZHU Yongyi,ZHANG Jinchang,ZHANG Hengchun,DING Yujiao,LIN Feng,QIN Yuxing,ZHOU Hai,SUN Wenlong. Log response characteristics and lithological evaluation of volcanic rocks in Yingcheng Formation from the second scientific drilling borehole (SK-2 east borehole) in Songliao basin of Northeast China[J]. Geology in China, 2019, 46(5): 1174-1183(in Chinese with English abstract).
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Author NameAffiliationE-mail
ZHAO Jinhuan Key Laboratory of Geo-detection, Ministry of Education, China University of Geosciences(Beijing), Beijing 100083, China
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China 
 
ZOU Changchun Key Laboratory of Geo-detection, Ministry of Education, China University of Geosciences(Beijing), Beijing 100083, China
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China 
zoucc@cugb.edu.cn 
WANG Wenshi Institute of Exploration Techniques, China Geological Survey, Langfang 065000, Hebei, China  
ZHANG Xiaohuan Key Laboratory of Geo-detection, Ministry of Education, China University of Geosciences(Beijing), Beijing 100083, China
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China 
 
ZHU Yongyi Institute of Exploration Techniques, China Geological Survey, Langfang 065000, Hebei, China  
ZHANG Jinchang Institute of Exploration Techniques, China Geological Survey, Langfang 065000, Hebei, China  
ZHANG Hengchun Institute of Exploration Techniques, China Geological Survey, Langfang 065000, Hebei, China  
DING Yujiao Tianjin Branch, CNPC Logging, Tianjin 300280, China  
LIN Feng Tianjin Branch, CNPC Logging, Tianjin 300280, China  
QIN Yuxing Tianjin Branch, CNPC Logging, Tianjin 300280, China  
ZHOU Hai Tianjin Branch, CNPC Logging, Tianjin 300280, China  
SUN Wenlong Tianjin Branch, CNPC Logging, Tianjin 300280, China  
基金项目:中国地质调查局地质调查专项(12120113017600)、国家自然科学基金重大项目专题(41790455-1)和中国地质调查局公益性基础地质调查项目(DD20179362)联合资助。
中文摘要:为开展松辽盆地深部长期观测、流体实验和探索白垩纪火山事件,利用松科二井东孔丰富、齐全的测井资料,对营城组火山岩岩性进行评价。通过测井响应特征分析发现,松科二井东孔营城组凝灰岩具有最强的放射性和导电性,高孔隙度的集块熔岩密度为低值,流纹岩表现出高密度和低导电性。利用测井交会图和成像识别模式,识别出松科二井东孔营城组火山岩以流纹岩、凝灰熔岩和集块熔岩为主,少量的凝灰岩。结合凝灰岩处测井曲线变化特点,证明了火山喷发间断的存在。流纹岩具有高碱、高Si、低Fe和低黏土矿物特征。T2谱分析认为流纹岩有利于后期深部长期观测和流体实验的开展。研究成果对松科二井东孔后续火石岭组火成岩及整个松辽盆地火山岩研究具有一定的参考价值。
中文关键词:深地勘查工程  松科二井东孔  火山岩  测井响应特征  岩性评价
 
Log response characteristics and lithological evaluation of volcanic rocks in Yingcheng Formation from the second scientific drilling borehole (SK-2 east borehole) in Songliao basin of Northeast China
Abstract:In order to conduct long-term deep observation, fluid experiments and investigate volcanic events in Songliao basin, the authors carried out lithological evaluation of volcanic rocks in Yingcheng Formation by using abundant and complete geophysical logs from SK-2 east borehole. The log response analysis of volcanic rocks shows that the radioactivity and electric conductivity of tuffs are the strongest. Agglomeratic lavas have low density because of high porosity. The density of rhyolites is the highest and the electric conductivity is the weakest. Volcanic rocks of Yingcheng Formation along SK-2 east borehole consist of rhyolites, transitional tuffl lavas, agglomeratic lavas and a little tuffs by using cross plots and imaging models. A volcanic eruptive gap may exist, as evidenced by tuff with high GR, low RD and low DEN. Rhyolites are characterized by high alkali, high Si, low Fe and low clay mineral. T2 analysis suggests that the rhyolites are favorable for carrying out long-term observations and fluid experiments. The results provide a reference of interpretation for subsequent volcanic rock in Huoshilin Formation and research of volcanic rocks in the whole basin.
keywords:deep exploration engineering  SK-2 east borehole  volcanic rocks  log response characteristics  lithological evaluation
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