摘要
本文通过对吸水剖面测井中放射性沾污类型的分析,研究了各种类型放射性同位素沾污机理,提出了控制和消除沾污的两种方法,并进行了现场试验,通过数学模型的计算,求出了不同沾污类型的校正系数,经过地面物理模型井试验,进一步验证了校正系数的正确性,从而建立了同位素吸水剖面测井资料解释的校正方法。
On the basis of analysis of the types and mechanism of radioactive contamination in isotope tracer logging, two ways to control and eliminate the contamination are proposed, which have been tested and used in the field. Mathematical models for three types of contamination are given, and different correction factors are derived from the mathematical models in this paper. These correction factors are confirmed by simulation test. Thus a correction method for injection profile logging is provided. This method has been used in the field, and its application results are satisfactory.
