利用交互式反演方法改善储层含油饱和度评价精度  

Using Interactive Inversion to Improve the Evaluation of Oil Saturation in Reservoirs

作　　者：修力君 修昊 王昌学[4] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]吉林油田公司勘探开发研究院,吉林松原138000 [3]新疆大学,新疆乌鲁木齐830046 [4]中国石油勘探开发研究院测井与遥感技术研究所,北京100083

出　　处：《测井技术》2014年第3期279-285,共7页Well Logging Technology

基　　金：中国石油天然气股份公司科技项目水平井测井评价方法与技术

摘　　要：地球物理参数的反演主要用于尽可能消除泥浆侵入和围岩对仪器测量的影响,但常用的反演方法是在理想模型上纯粹的数学优化方法,不能适应复杂多变的井眼及地层环境。针对常规反演方法的缺陷,提出了测井响应交互式联合反演方法。综合岩性、孔隙度、电阻率以及工程环境等各种资料对反演过程中的迭代优化进行约束,大大提高了反演结果的可靠性。这种方法可应用于仪器测量范围内地层电阻率的计算。通过对几口井资料的实际处理,反演结果合理可靠,改善了对油气层的识别能力和含油饱和度评价精度。The inversion of geophysics parameters is mainly used to reduce the effect of mud invasion and shoulder formation on the measurements of logging tools.The conventional inversion method,apure optimization in mathematics based on ideal models,is not adaptive in the computation of geophysics parameters with complicated environment of borehole and formation.In accordance with the defect of conventional inversion,the joint interactive inversion is put forward that uses many constraints in the process of iteration and optimization to enhance the reliability of processing results by the comprehension of various well-logging data including lithology data,porosity data,resisitivity data and engineer environment data,et al.The method can be applied in calculation of the formation resistivities in the range of measurement for resistivity tool.After the data processing for several wells,the results show this method is reasonable,reliable and progressive in the hydrocarbon identification and evaluation of oil saturation in reservoirs.

关 键 词：电阻率测井 交互式 反演 储层 含油饱和度 

分 类 号：P631.83[天文地球—地质矿产勘探]