摘要
新系列测井中的电阻率曲线,采用聚焦型、径向探测浅、中、深组合测井。如微球或微侧向与双侧向组合;双感应与八侧向组合。在现场实际应用中,这些组合在大段泥岩层段曲线重叠不好,即所谓的“双轨”。另一个问题是油层、水层正负幅差规律性不强、幅差小。问题能否统归于“仪器质量问题”?这就有必要从测井方法特性方面分析与研究。本文着重分析测向方法特性与双轨、油、水层幅差之间的关系。
The resistivity logs in the new series of logs employ the combination offoeused shallow-medium-deep investigation logs, such as the combination ofmicro spherically focused log or micro laterolog-dual laterolog, the combina-tion of dual induction-laterolog 8. In the field practical application, thesecombination logs don't superimpose well in long sections of shaly formation, so'dual traces' appears. Another problem is the regularity of amplitude differencebetween positive and negative amplitudes in oil and water bearing beds is notso good with the amplitude difference being very small. Can it be attributedto 'the quality of the instrument'? So it's necessary to analyse and studythe characteristics of the logging methods. This paper stresses on analysingthe characteristics of laterolog and the relation between the 'dual traces' andamplitude difference in oil and water bearing beds.
