火山岩岩性、岩相识别方法——以准噶尔盆地滴南凸起火山岩为例  

Identification methods of volcanic lithology,lithofacies:Taking the volcanic rocks of Dinan alient in the Junggar Basin as an instance

作　　者：石新朴[1] 胡清雄[1] 解志薇 杨朝栋[3] 周隶华 孙德强[4] 吕灿[1] 贾智彬[5] 赵振[5] 

机构地区：[1]中国石油新疆油田公司采气一厂,新疆克拉玛依834000 [2]中国石油华北油田公司采油一厂,河北任丘062550 [3]中国石油新疆油田公司采油一厂,新疆克拉玛依834000 [4]中国科学院科技战略咨询研究院,北京100190 [5]中国地质大学,北京100083

出　　处：《天然气地球科学》2016年第10期1808-1816,共9页Natural Gas Geoscience

基　　金：国家自然科学基金重点项目(编号:7113305);国家自然科学基金面上项目(编号:71673266)联合资助

摘　　要：准确识别火山岩岩性和岩相是进行火山机构重建及地震相刻画的基础。火山岩岩性复杂且变化快,其变化不同于砂岩分布变化服从于沉积规律,而是与火山建造和喷发期次等因素直接相关,造成目前无成熟的预测模型和较强规律性可以遵循预测。选择准噶尔盆地滴南凸起火山岩为研究对象,总结出适应火山岩复杂岩性岩相识别的技术方法,即首先利用测井、岩心等基础资料建立关键岩性电性识别图版,落实井点硬数据的岩性纵向分布;其次,建立不同岩性的地震响应特征;第三,在地震波阻抗二次刻画岩性分布范围的约束下,应用数学概率和变差函数分析技术对岩性进行精细刻画;最后,结合测井响应特征进行测井相与地震相的综合标定,建立典型的火山机构地质、测井、地震相模式,为火山岩机构识别提供依据。Accurate identification of volcanic lithology and lithofacies is the basis of volcanic apparatus reconstruction and seismic facies characterization.Because the volcanic rock lithofacies are complex and change rapidly,the variation of which is directly related to the factors of volcanic formation and eruptible stage,differing from the changes of sandstone distribution which is subject to sedimentary regularity.There is no mature prediction model or strong regularity that can be forecasted.The study proposed recognizable technical methods that can adapt to the complicated lithology and lithofacies.Some crucial viewpoints are concluded as follows.Firstly,utilize fundamental data of logging and cores to build identification plates of key lithology and electrical property,verify the longitudinal distribution of lithology of well point hard date.Secondly,establish seismic response characteristics of different lithology.Thirdly,in the constraints of lithology distribution range characterized by seismic impedance,apply mathematical probability and variation function analysis to meticulously depict the lithology.Finally,combine the logging response characteristics to synthetically calibrate logging facies and seismic facies,build typical models of geology,logging,seismic facies of volcanic apparatus to provide a basis for identifying volcanic apparatus.

关 键 词：火山岩 岩性识别 岩相识别 地震相模式 准噶尔盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]