摘要
根据粘土矿物含量的图版计算方法,计算了实际井段的粘土矿物含量,分析了高岭石、伊利石和蒙脱石与U、Th、K含量的相关关系,由此分析得到粘土矿物含量与放射性元素含量的多元线性关系,建立了粘土矿物含量计算的回归方程。通过对不同井段以及同一井段不同地层数据建立的回归方程分析,给出了具有代表性的线性回归方程模型。根据一个实际井段粘土矿物的计算,获得粘土矿物含量随深度的变化,其粘土矿物含量计算结果与原测井解释相吻合,同时与岩心分析误差在10%左右。
Basing on the chart analysis for clay mineral content, a cross plot of clay mineral content and radioactivity element concentration was obtained, and a multivariate linear relation between clay mineral content and radioactivity element U, Th and K was established, deriving a regression equation to estimate clay mineral content. Through the regression analysis of the data from different well sections or the same well section of different formations, a typical linear regression model was provided. The application of the model to a real well section got a vertical variation of clay mineral, which was in an excellent agreement with the practical interpretations.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2010年第1期215-221,共7页
Journal of Jilin University：Earth Science Edition
基金
四川省地学核技术重点实验室开放基金项目(273)
吉林大学种子基金项目(498042300423)
关键词
自然γ能谱测井
粘土矿物
图版计算
回归方程
natural gamma-ray logging
clay minerals
chart analysis
regression equation
