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《Well Logging Technology》 2007-04
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Logging Identification of Complicated Lithology with Constrained Least Square Algorithm

XIE Gang,HU Zhen-ping,LUO Li,ZHANG Shu-dong(Logging Company of Sichuan Petroleum Administration,Chongqing 400021,China)  
A practical constrained least square(CLS) algorithm is introduced to solve logging identification problem of complicated lithology.Log interpretation model with multi-mineral components formation and model of CLS problem are built,steps and algorithm of solving the CLS problems are introduced in detail,and the models and algorithm are used to digitally interpret the logging data of carbonate rock in Sichuan.Application results show that the algorithm has faster computing speed and higher discriminating precision, so that it has great application potential in logging lithology identification.
【CateGory Index】: P631.81
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