钻井液“污染”条件下油气识别解释方法

Recognizing and interpreting methods of oil and gas under drilling fluid "pollution

针对钻井液加入有机添加剂后对录井资料的影响,介绍了通过紫外荧光分析、定量荧光“差谱分析”技术、气测的不同变化特点、dcs指数法、地化、热解气相色谱谱图特征、峰值变化规律及各种资料相关性等随钻识别真假油气显示、评价油气显示层的技术方法,这些方法在实际应用中取得较好效果。

To the influence of drilling fluid on the logging data after adding additive to the drilling fluid, this paper introduces the technical methods of recognizing true and false show of oil and gas and evaluating oil and gas show layer according to the analysis of ultraviolet fluorescence, the technology of ' differential analysis' in quantitative fluorescence, the different changing characteristics of gas logging, dcs exponent, geochemistry, chromatogram characteristic of pyrolytic-gas ehromatography, the variety laws of peak values and the relativity of various data. These methods have obtained better effect on practical application.