七里村油田薄油层测井识别技术研究

针对常规测井曲线纵向分辨率不高,对薄油层的响应值不准确,导致薄油层漏失解释,同时非常规的高分辨率测井系列成本高等问题,本文基于薄层对常规测井响应特征影响分析,确定薄层敏感测井曲线,综合沃尔什反演法、分辨率匹配法、傅立叶频谱法多种提高常规测井曲线纵向分辨率方法,优选出最佳方法,结果表明：傅立叶频谱法处理后的测井曲线能够有效地反映地层的真实信息,通过测井曲线纵向分辨率提高处理以后,砂体划分精度明显比原结论更加精细,测井解释结论更加准确,对全区的开发和储量接替都起到了良好的作用。

Research on Log Recognition Technology for Thin Oil Layer in Qilicun Oilfield

Aiming at low longitudinal resolution of conventional logging, inaccuracy of response value to thin reservoir which results in loss of thin layer interpretation, high cost of conventional high resolution logging suite, based on effect analysis on conventional logging response characteristics of thin layer, sensitive logging curve of thin layer was confirmed. Walsh inversion method, resolution matching method and Fourier frequency spectrum method were analyzed and compared to choose the best way to improve conventional well log longitudinal resolution. The result shows that treated well logs with Fourier frequency spectrum method can effectively reflect actual layer condition. After the treatment of improving well log longitudinal resolution,the sand body division accuracy is more exquisite, and the well logging interpretation is more accurate, which can provide favorable benefit for development and reserves replacement of all area.