摘要
系统介绍了分光光度计法岩石阳离子交换容量的测量原理和步骤,修正了行业标准SY5395-91中的计算公式。对测量过程中的误差进行了分析,尤其是标准工作曲线斜率误差和溶液浓度误差对吸光度的影响,给出了通过调整待测液浓度来降低测量误差的方法。最后计算出阳离子交换容量的测量不确定度。
Introduces the method and procedure of the core cation-exchange capacity （CEC） measurement with spectrophotometer by the numbers. Corrects the CEC calculating formula in the oil and gas industry standaM SY5395-91. Analyses the errors in the measurement, particular the slope error of the working line which is obtained from the regression of the standard solution measurement and the absorbency error due to the salinity error. Gives the method to reduce measurement error by adjusting the salinity of solution. Also calculates the uncertainty of CEC measurement.
出处
《测井技术》
CAS
CSCD
2006年第4期291-293,共3页
Well Logging Technology
关键词
岩石物性
阳离子交换容量
测量
误差分析
不确定度
petrophysics
cation-exchange capacity
measurement
error analysis
uncertainty
