摘要
大庆长垣地区已进入高含水后期开采阶段,调整挖潜难度越来越大,依靠测井资料对于评价薄差层、非均质层水淹状况存在一定的难度,迫切需要寻找一种提高油层水淹状况解释准确度的新途径。通过分析大庆长垣密闭取心与井壁取心的岩石热解、气相色谱及荧光显微图像等地化录井资料,总结该地区评价油层水淹级别、井壁取心实物观察及热解驱油效率分析方法,建立了有效孔隙度与剩余油饱和度评价图板,结合气相色谱与荧光显微图像的定性分析,形成了一套地化录井水淹层综合评价方法。通过实例展示了该项技术在综合判断油层水淹程度、老油田调整挖潜提高效率方面良好的应用前景。
Changyuan area of Daqing has entered into the later pe- riod of production stage due to high water content,adjus- ting and tapping the potential power is more and more diffi- cult,there is a certain difficulties by relying on the wireline logging data to evaluate the water-flooded condition of thin and poor,heterorgeneity beds,so it is urgent to find out a new way to increase the interpretation accuracy for water- flooded condition of oil beds.By analyzing geochemical log- ging data,such as rock pyrolysis,gas chromatography and fluorescence micro image of sealing coring and sidewall co- ring in Daqing Changyuan area,the paper summarizes the analyzing method for evaluating the water-flooded level of the oil beds,physical observation for sidewall coring and pyrolysis oil displacement efficiency for the area,establishes the evaluation chart for effective porosity and oil-remaining saturation,and forms a set of comprehensive evaluation methods of geochemical logging for water flooded zones by combining with the qualitative analysis of gas chromatogra- phy and fluorescence micro image.The application exam- ples have shown the fine application prospect of the technol- ogy in increasing efficiency of comprehensively judging the water flooded level of oil beds,adjustment and tapping the potential power for the old oilfields.
出处
《录井工程》
2007年第4期49-53,共5页
Mud Logging Engineering
关键词
地化录井
井壁取心
水淹层
评价方法
驱油效率
有效孔隙度
剩余油饱和度
geochemical logging
sidewall coring
waterflooded bed
evaluation method
oil displacement efficiency
effective porosity
oil-remaining saturation
