七里村油田薄油层测井识别技术研究

Study on thin oil layer logging identification method of Qilicun oilfield

针对七里村油田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等问题,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;通过对沃尔什反演法、分辨率匹配法、傅立叶频谱法提高常规测井曲线纵向分辨率方法分析表明,傅立叶频谱法是提高纵向分辨率的有效方法,该方法处理后的测井曲线能够有效地反映地层的真实信息。

In view of the problems of Qilicun oilfield,such as low vertical resolution of conventional logs,inaccurate response to thin oil layers and thin oil leakage of reservoir interpretation,based on the influencing analysis of thin oil layers on conventional logging response characteristics,the sensitive logging curve of thin layers has been determined.Through the vertical resolution analysis of Walsh inversion method,resolution matching method and the Fourier spectrum method,the Fourier spectrum method is an effective method to improve vertical resolution.The logging curve after measurement of the Fourier spectrum method can effectively reflect the true message of the formation.