摘要
石炭系卡拉沙依组碎屑岩储层已经成为塔河油田奥陶系碳酸盐岩储层的重要替代储层。针对卡拉沙依组砂泥交互薄储层横向变化显著、非均质性严重的特点,笔者提出,在综合分析测井曲线特征的基础上,利用补偿中子测井曲线和自然伽马测井曲线构建岩性指示特征曲线。将构建的岩性指示特征曲线用于储层反演,与常规波阻抗反演对比,岩性指示特征曲线明显改善了反演效果,提高了对薄储层的识别能力,为塔河油田石炭系碎屑岩储层的精细研究提供了一种简便有效的新方法。
The clastic reservoir of Carboniferous Karashayi Formation has become important substitution to the Ordovician carbonate reservoir in the Tahe Oilfield.The Karashayi sand and mud thin interbedded reservoir is heterogeneous and laterally variable.On the basis of analyzing the features of the curves,the authors built a lithologic index curve based on the integrated gamma ray curve and neutron porosity curve.The characteristic curve was used to invert the reservoir.A comparison with the ordinary acoustic impedance inversion shows that the characteristic curve can improve the inversion effect remarkably and recognize the thin interbedded reservoir efficiently.The new method was used to identify thin beds in the Tahe Oilfield,with satisfactory results obtained.This method has provided a new simple and effective means for the study of Carboniferous clastic reservoirs in the Tahe Oilfield.
出处
《物探与化探》
CAS
CSCD
北大核心
2010年第3期320-323,共4页
Geophysical and Geochemical Exploration
基金
国家重点基础研究973项目2005CB422104及2006CB202402联合资助
关键词
岩性识别
薄互层
合成反演
卡拉沙依组
lithologic recognition
thin Interbed
synthetic inversion
Karashayi Formation
