元素俘获测井（ECS）在辽河太古界潜山地层中的应用

辽河太古界潜山地层岩性复杂,测井评价难度大。元素俘获测井（ECS）是一种将测井技术与岩石学直接联系起来的先进测井技术,通过化学源向地层中发射4兆电子伏特的快中子,测量记录非弹性散射γ射线和热中子辐射俘获核反应散射γ射线,经过解释处理,提供地层中Si、Ca、Fe、S、Ti、Gd等主要化学元素的含量。在岩心取样化验分析、岩石定名的基础上,利用测井资料,对太古界变质岩潜山进行岩石测井分类,应用ECS测井资料,与常规测井资料结合,进行岩性识别、求取地层孔隙度及划分潜山内幕,应用于太古界潜山地层测井评价,取得了较好的应用效果。

Application of ECS logging to Archean buried hill layers of Liaohe oilfield

Archean buried hill layers of Liaohe oilfield are composed with complex lith-ologies.It is hard to evaluate using logging data.Elements capture spectroscopy logging（ESC）is an advanced logging technique combining petrology.It record inelastic soft scatter-ring and thermal neutron radiative capture nuclear reaction gamma-ray,through chemical source send fast neutron with 4MeV to layers.we can know the quantity of Si,Ca,Fe,S,Ti,Gd etc.main chemical elements in layers by interpreting.Based on classifying the type of lithology and the calibration of coring data and well log data,Archean metamorphic rocks buried hill are classified in logging-lithology standard.Elements capture spectr-oscopy（ECS） and conventional logs can be used for analytical study,the lithologies of the layers can be identified,the porosity can be calculated,and the inner formation model of the Archean buried hill layer can be given.The application results of ECS to logging evaluation of Archean buried hill layers are obvious.