成像测井在地质油藏研究中的应用

Application of image logs to geological reservoir study

徐锦绣 王永利 曹树春 张丙亮

Xu Jinxiu Wang Yongli Cao Shuchun Zhang Bingliang

中海石油(中国)有限公司天津分公司, 天津 300452; 西南石油大学研究生院, 四川成都 610500

Tianjin Branch of CNOOC(China) Limited, Tianjin 300452; Graduate School of Southwest Petroleum University, Chengdu 610500

成像测井包含了大量的地质信息, 可以更加直观和准确地显示出地下油藏的地质特征, 能够对构造(构造倾角、断层)和沉积(层理面、岩性面、古水流方向)等方面进行分析和应用。而且, 成像测井是研究裂缝性储层的最有效和直观的手段, 能够满足评价裂缝油气藏所需要的包括孔洞、裂缝发育程度及其有效性和面孔率等参数。此外, 成像测井还有助于确定现今地应力方向及判断井眼的稳定性, 为钻采工程方面提供科学决策的重要依据。总之, 成像测井与其他专业密切配合, 能够解决更多的地质油藏问题, 从而为勘探开发提供更多科学有效的手段。

There is abundant geological information in Image logs. It could be more straightly and accurately used to study the geological characteristics of subsurface reservoirs, including structure (structural dips, faults), sediment (beddings, litho-face, paleocurrent), and so on. And it's also the best measurement of apertures in fractured reservoirs to provide aperture density and plane porosity for evaluating fractured reservoirs. In addition, imaging log is of great significance in study of present in-situ stress to offer important basic data for drilling and production engineering. In a word, imaging log should be combined with other disciplines in reservoir geology and engineering, to offer more scientific and valid applications for oilfield exploration and development.