鄂尔多斯盆地马五4^1低阻气层成因分析及识别方法研究  

Genetic analysis and identification method of low-resistivity Ma54^1 gas reservoirs in Ordos Basin

作　　者：朱保定[1] 屈亚龙 陈阵[1] 赵太平[1] 李卫兵[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,710018

出　　处：《低渗透油气田》2016年第2期66-75,共10页

摘　　要：以正确识别鄂尔多斯盆地马五4^1低阻气层为目的，从3个方面分析了低阻气层的成因机理，即：裂缝与孔洞的组合方式、孔洞充填物、含水饱和度；同时利用常规测井曲线建立了4种低阻气层识别方法，即：中子孔隙度交会图版、阵列感应径向电阻率梯度因子、声阻抗与声速曲线叠合、中子孔隙度曲线叠合．现场应用中已在低阻气层的识别和有效储层的解释方面取得了较好的效果。In order to correctly identify the low resistivity Ma54^1gas reservoirs in the Ordos basin, the genesis and mechanism of low resistivity gas reservoirs are analyzed from 3 aspects of the combination of fractures and pores, pore/hole filling, and water saturation. At the same time, four methods of low resistivity gas reservoirs recognition are established by using conventional logging curves, that is, the neutron porosity crossplot, radial resistivity gradient factors by array induction, superposition of acoustic impedance and velocity curves, and overlapping of neutron porosity curves. Field application has achieved good results in the identification of low resistivity gas reservoirs and the interpretation of effective reservoirs.

关 键 词：鄂尔多斯盆地 低阻 成因机理 识别方法 

分 类 号：P618.130.2[天文地球—矿床学]