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Technology Review on the log interpretation of horizontal well

ZHOU Can-can,WANG Chang-xue(Well logging and remote sensing technology department,research institute of petroleum exploration and development,petroChina,Beijing 100083,China)  
The highlight in oil industry is the application of horizontal well technology during the later of twentieth century.The remarkable effects of horizontal well technology on the development of oil fields result from the reduction of the costs of exploration and development,and the evident improvement of producility or recovery ratio of oil-gas in single well,et al.The evolved history of horizontal well technology is described,the different and the same in log interpretation are illustrated between the horizontal well and the vertical well,the well logging environments and the current problems analyzed in the log interpretation of horizontal well,and some aspects being paid attention to in processing and comprehensive interpretation of horizontal well logs presented simply.The existing problens in the terpretation of harizontal well logging are pointed out according to the current situation in our country,and some ideas are showed in the end,that are,based on the following of foreign methods and the innovating of domestic technologies in horizontal well log interpretation,the research of forward and inversion methods should be done to logs in complex environment,the means investigated to correct the effects of various of environments,the integrated applications of multi-discipline knowledge and interpretation experiences of vertical well reinforced to improve log interpretation of horizontal well.
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