松辽盆地中央隆起带基底岩性识别的Fisher判别分析法
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摘要
针对松辽盆地中央隆起带钻遇基底岩性复杂、取心较少的情况,以隆探1井为例,在取心井显示松辽中央隆起带基底主要为变质岩和岩浆岩的基础上,结合测井资料,运用Fisher判别分析的方法识别基底岩性。结果表明:松辽盆地中央隆起带钻遇基底岩性可化分为绿泥片岩、角闪片岩、糜棱化花岗岩和花岗岩四种。经回判发现,所建立的Fisher判别函数识别岩性的正确率达80. 9%。该研究证实运用Fisher判别分析法识别基底岩性的可行性较高。
This paper is concerned with a study in response to complex lithology and fewer cores,as occurs when drilling takes place in the basement in the central uplift zone of Songliao Basin. The study using Well Longtan 1 as an example involves looking at the case where the basement of the central paleouplift zone in Songliao Basin consits mainly of metamorphic and magmatic rocks and determining basement lithology by fisher discriminant analysis and combined with logging data. The results show that the basement lithology in the central uplift zone of Songliao Basin can fall into four types: chlorite schist,amphibolite schist,mylonitized granite and granite; and the Fisher discriminant function offers a correct lithology identification rate of up to 80. 9%. This study validates that Fisher discriminant analysis is more feasible to identify basement lithology.
This paper is concerned with a study in response to complex lithology and fewer cores,as occurs when drilling takes place in the basement in the central uplift zone of Songliao Basin. The study using Well Longtan 1 as an example involves looking at the case where the basement of the central paleouplift zone in Songliao Basin consits mainly of metamorphic and magmatic rocks and determining basement lithology by fisher discriminant analysis and combined with logging data. The results show that the basement lithology in the central uplift zone of Songliao Basin can fall into four types: chlorite schist,amphibolite schist,mylonitized granite and granite; and the Fisher discriminant function offers a correct lithology identification rate of up to 80. 9%. This study validates that Fisher discriminant analysis is more feasible to identify basement lithology.
引文
[1]杜金虎.松辽盆地中央古隆起带(北部)天然气成藏条件分析及勘探前景[J].中国石油勘探,2017,22(5):1-14.
[2]宋柏荣,施玉华,刘玉婷,等.辽河坳陷结晶基底岩性特征、含油性及测井识别[J].地质论评,2017,63(2):427-440.
[3]郑茜.印尼J区块基岩岩性常规测井识别方法[C]//中国石油学会物探专业委员会.中国石油学会2017年物探技术研讨会论文集.中国石油学会物探专业委员会:石油地球物理勘探编辑部,2017:4.
[4]陆明德,田时芸.石油天然气数学地质[M].武汉:中国地质大学出版社,1991.
[5]王珍珍.利用Fisher判别法识别复杂岩性[J].国外测井技术,2012,33(5):22-24.
[6]杨凯,关叶钦,季李岚. Fisher判别法在火山岩岩性识别中的应用[J].国外测井技术,2012,33(1):44-46.
[7]杨超,史秀志.基于Fisher判别法模型的矿山安全标准化等级评价[J].黄金科学技术,2018,26(2):187-194.
[8]鲁金涛,李夕兵,宫凤强,等.基于主成分分析与Fisher判别分析法的矿井突水水源识别方法[J].中国安全科学学报,2012,22(7):109-115.
[9]张宪国,张涛,林承焰,等.塔南凹陷复杂岩性低渗透储层测井岩性识别[J].西南石油大学学报(自然科学版),2015,37(1):85-90.
[2]宋柏荣,施玉华,刘玉婷,等.辽河坳陷结晶基底岩性特征、含油性及测井识别[J].地质论评,2017,63(2):427-440.
[3]郑茜.印尼J区块基岩岩性常规测井识别方法[C]//中国石油学会物探专业委员会.中国石油学会2017年物探技术研讨会论文集.中国石油学会物探专业委员会:石油地球物理勘探编辑部,2017:4.
[4]陆明德,田时芸.石油天然气数学地质[M].武汉:中国地质大学出版社,1991.
[5]王珍珍.利用Fisher判别法识别复杂岩性[J].国外测井技术,2012,33(5):22-24.
[6]杨凯,关叶钦,季李岚. Fisher判别法在火山岩岩性识别中的应用[J].国外测井技术,2012,33(1):44-46.
[7]杨超,史秀志.基于Fisher判别法模型的矿山安全标准化等级评价[J].黄金科学技术,2018,26(2):187-194.
[8]鲁金涛,李夕兵,宫凤强,等.基于主成分分析与Fisher判别分析法的矿井突水水源识别方法[J].中国安全科学学报,2012,22(7):109-115.
[9]张宪国,张涛,林承焰,等.塔南凹陷复杂岩性低渗透储层测井岩性识别[J].西南石油大学学报(自然科学版),2015,37(1):85-90.