摘要
针对常规测井方法很难区分基质孔隙和次生孔隙的问题,采用阿尔奇公式将电成像测井资料转换为井周孔隙度谱,研究分析了不同孔径大小的孔隙分布情况,定性区分出基质孔隙和次生孔隙;利用铸体薄片数据和核磁共振数据刻度孔隙度谱次生孔隙度,以确定基质孔隙和次生孔隙的截止值大小,可定量计算出储层次生孔隙度。该方法在实践中取得了良好的应用效果。
In allusion to conventional logging methods was difficult to distinguish matrix porosity and secondary porosity,taking the elec-tro-imaging logging data converted into porosity spectrum by using Archie formula. The distribution of pores with different sizes were an-alyzed to distinguish matrix porosity and secondary porosity. Secondary porosity cutoff values were calibrated by core thin section data and nuclear magnetic resonance data,and reservoir secondary porosities could be quantitatively calculated. The application of this meth-od on practical wells shows good results.
出处
《能源与环保》
2017年第2期133-136,142,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
成像测井
孔隙度谱
次生孔隙度
核磁共振
铸体薄片
基质孔隙
次生孔隙
imaging logging
porosity spectrum
secondary porosity
NMR
casting thin-section
matrix pores
secondary pores
