气测全烃值响应方程的建立及现场应用分析

The establishment of gas logging total hydrocarbon response equation and wellsite application analysis

该文针对现场录井过程中经常会出现气测全烃值远远大于或小于组分体积分数之和,或者气测全烃值大于100%的不合理现象,在气样实验的基础上建立了标定状态下的气测全烃值响应方程并进样验证,分析了不同标样对气测全烃值的影响,建议对其标定样进行统一,以消除标定样变化对气测全烃值的影响。该文从全烃响应方程的角度对气测录井测量值的探讨,对于指导气测录井发展具有重要作用。

According to the unreasonable phenomena that gas logging total hydrocarbon values are far more larger than or smaller than the sum of the component volume fractions,or gas logging total hydrocarbon values are larger than 100% which always occurs during wellsite logging,the author set up gas logging total hydrocarbon value response equation under calibration state on the basis of gas testing and verified it by gas sample analysis,then analysed the influences of different calibration samples on gas logging total hydrocarbon values.The suggestion of using united calibration gas sample was put forward in order to eliminate the influence of changing of the calibration sample on it. The paper discussed gas logging measuring value from the point of view of total hydrocarbon response equation,and it has an important effect on guiding gas logging development.