对气测全量曲线“负漂”的认识及资料应用价值的探讨

The Recognition of The Total Gas Curve "Negative Shift" and Discussion on Data Application Value

对于TDC—综合录井仪的气测全量曲线“负漂”成因机理,通过理论分析和现场试验,有了初步认识。全量曲线“负漂”峰是惠斯顿电桥鉴定器测量低导热系数气体的正常反应,它对判断CO_2气体和N_2气体的存在有较好的应用价值。它可为今后进一步研究地层中高矿化度水层、油水同层和气水同层的解释方法提供一项特殊价值的气测分析资料。

As to the origin and the mechanics of total gas curve'negative shift'from TDC comprehensive logging unit,we have an initial recognition of it by theoretical and wellsite test. The' negative shift' peak for total gas is the normal reaction of the gas with low thermal conductive factor. Knowing it is helpful to judge the existence of CO_2 and N_2 gas and provides gas logging analytical data with special value to the interpretation method for the further developing and studying water layers,oil—water beds and gas—water beds.