松辽盆地北部深层火山岩X射线荧光元素录井识别方法  

X-ray fluorescence element logging identification method for deep volcanic rock in the north of Songliao Basin

作　　者：王俊[1] 

机构地区：[1]中国石油大庆钻探工程公司地质录井一公司

出　　处：《录井工程》2016年第3期39-42,97,共4页Mud Logging Engineering

摘　　要：松辽盆地北部深层火山岩识别难点主要表现在岩性类别多,矿物成分复杂。同时,PDC钻头加扭力冲击器钻井、空气钻井、水平井钻井等新工艺、新技术在油气勘探中的广泛应用,也给传统岩屑录井识别岩性带来了困难。以该盆地北部深层1492块不同类型火山岩样品为研究对象,开展了X射线元素分析(XRF)识别火山岩录井方法研究,在尝试大量图板交会分析的基础上,经对各个图板反复对比与筛选,分别选择MgO与SiO_2、TiO_2与CaO、TiO_2与SiO_2、Na_2O与MgO含量参数建立了4个不同类型火山岩识别评价图板。以上述分析为基础,结合火山岩定名采用的全碱(Na_2O+K_2O)与二氧化硅(SiO_2)含量TAS图板法,可最终定名火山岩具体岩性。录井实践表明,该方法在识别不同类型火山岩的基础上,可有效识别具体岩性。The identification difficulties for deep volcanic rock in the north of Songliao Basin are its multiple lithology,complex mineral compositions and structures.Meanwhile,the wide use of PDC drill bit + torsion impactor drilling,air drilling,horizontal drilling and other new technologies in oil and gas exploration also make the traditional cutting logging lithology identification difficult.Taking 1492 different types of volcanic rock samples from the north deep layers of the basin as the study target,the study was carried out for mud logging method on volcanic rock identification of X-ray elemental analysis(XRF).On the basis of attempts to a large number charts of the intersection analysis and chart correlation and screening the elemental content parameters of MgO and SiO_2,TiO_2 and CaO,TiO_2 and SiO_2,Na_2O and MgO were respectively selected to establish four different types of identification and evaluation charts for volcanic rock.Depended on the above analysis,combined with full alkali(Na_2O +K_2O)and silicon dioxide(SiO_2)content TAS chart method which volcanic rocks were named can eventually name the specific lithologies of volcanic rocks.Mud logging practice showed that the method can effectively identify the specific lithology on the basis of identifying different types of volcanic rocks.

关 键 词：XRF录井 元素分析 火山岩 类型 岩性 图板法 曲线法 

分 类 号：TE132.1[石油与天然气工程—油气勘探]