激发极化电位测井仪研制

摘要

The laboratory measurement of the induced polarization potential of rock shows that the attenuation of the induced polarization potential of rock contains a great deal of geological information.The time spectrum has a good correlation with the pore structure, porosity and permeability of formation rocks.Based on this, aprototype of excitation polarization potential logging tool is designed and developed.This instrument can continuously polarize formation and measure information while moving in the borehole.This provides a platform for logging construction for further study of the induced polarization effects of rocks.In addition, the formation data obtained by the tool can be fitted to obtain the relaxation time spectrum, which can be used to study the pore structure of the reservoir and the properties of the formation water, so as to provide a new technical means for the evaluation of complex reservoir and water flooded layer.%岩石激发极化电位实验测量研究表明,岩石的激发极化电位随时间衰减谱含有大量的地质信息.该时间谱与地层岩石的孔隙结构、孔隙度以及渗透率都有较好的相关关系.据此,设计研发了一种激发极化电位测井仪样机,该仪器可以在井眼中对地层进行连续极化和测量,为进一步研究岩石激发极化效应搭建了可以用于测井施工的平台.该仪器所取得地层资料经过拟合得到弛豫时间谱,可以用来研究储层孔隙结构和地层水性质,为复杂储层和水淹层评价提供新的技术手段.