测井技术2012，Vol.36Issue(2)：160-163,4.
利用逐点分层法提高自然伽马测井分辨率
A Method to Improve Natural Gamma Logging Resolution with Point-by-point Layering
徐文远 1张占松1
作者信息
- 1. 油气资源与勘探技术教育部重点实验室,长江大学,湖北荆州434023
- 折叠
摘要
Abstract
Due to the various surrounding rocks and borehole environments, the natural gamma signals are distorted to some extent. By compensating the deviation resulted from the distortion, we will get higher vertical resolution of natural gamma logs. Introduced is the basic principle of natural gamma logging. Established is an appropriate model to obtain the instrument detection range, which is layered according to different sampling intervals. The natural gamma log data calibration is realized by computing different contribution weights of each layer. Practical application shows that relative porosity error before calibration is 16. 2%, and after calibration it is reduced to 4. 1%. It is concluded that the calculation accuracy of natural gamma logging porosity is improved by using the above method.关键词
自然伽马测井/探测范围/孔隙度/权函数/分辨率Key words
natural gamma logging, detection range, porosity, weighting function, resolution分类
天文与地球科学引用本文复制引用
徐文远,张占松..利用逐点分层法提高自然伽马测井分辨率[J].测井技术,2012,36(2):160-163,4.
