【作者】 李云广；

【导师】 王文广； 柳成志；

【作者基本信息】 大庆石油学院 ， 矿产普查与勘探， 2009， 硕士

【摘要】 本文以松辽盆地北部徐家围子断陷营一段长井段取心火山岩岩心为基础,通过岩心观察描述及镜下鉴定,分析了该区的火山岩性及火山岩相特征,并对火山岩相在平面上的分布进行了研究。本次研究对徐深气田的进一步勘探和开发可提供一定的理论支持。研究结果表明:本区营一段发育有熔岩和火山碎屑岩两大类火山岩,主要以火山碎屑岩、熔结火山碎屑岩和火山碎屑熔岩组成的广义火山碎屑岩为主。本区火山岩相划分为5个相16个亚相。通过对岩性和岩相的研究,结合岩心、测井、地震等资料,建立了研究区不同火山岩岩相的测井和地震响应特征模型,达到定性识别岩相的目的。对研究区6口长井段火山岩取心井以气层组为单位进行了详细的岩相划分。编制出连井剖面共6条,确定了各剖面的火山岩相类型。利用井筒岩心与测井及地震解释资料,结合单井岩相划分结果,对研究区不同气层组的火山岩相平面分布进行预测,编制出火山岩相平面分布图4张。根据岩相在纵向上和平面上的分布特征,结合地表露头以及现代火山的特征,建立了本区营一段火山岩岩相模式,即:在横向上自火山口由近及远可以分为四个相区,即火山通道–侵出相区、爆发相区、喷溢相区、火山沉积相区;垂向上各相带的接触关系为下部爆发相,上部喷溢相。更多还原

【Abstract】 The essay based on the long coring of Yingyi section in the Xujiaweizi area of Songliao basin, analyse the characteristic of the volcanic lithology and volcanic facies through the observation and description of drill core,do research on the distribution of volcanic facies. Hope the research can offer the theory supports for the further exploration and development of Xushen gas field.The findings make known that the Yingyi section develops lava and athrogenic rock.The mainly type is generalized athrogenic rock which embody athrogenic rock, welded pyroclastic rock and alloclastic lava.The volcanic rock in this area is divided into 5 facies and 16 intrafacies.By the research on volcanic lithology and volcanic facies,unite the core、well logging and seismic data , volcanic logging and seismic interpretation models in Xingcheng area are founded.In this way the nature of volcanic lithofacies can be determined.Do detailed analysis on the volcanic facies of six long–coring wells and determine lithofacies types. Verify the types of volcanic facies of plane section by drawing up six plane sections of well tie. The lithofacies distribution of volcanic cycles in Yingcheng Formation in Xingcheng Area is predicted according the core,well logging and seismic data.Lithofacies mode of this area can be built through the character of lithofacies distribution.更多还原