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Stratified flow is common for the gravity segregation and flow regimes are very complex because of borehole inclination, therefore, all the conventional production logging tools cannot be effectively applied in horizontal wells, thus significantly increasing the difficulties in log interpretation. In this paper, firstly, the overseas progress in updated integration tools for horizontal wells and production profile interpretation methods has been discussed in brief. Secondly, by means of theory study and experimental simulations, we have obtained the production profile interpretation model and experimental interpretation charts, which have been calibrated by the improved downhole technology and optimization methods. Finally, we have interpreted X-well with the production profile interpretation software designed by us, and it proves that the methods are useful for the production profile interpretation in horizontal wells.horizontal well, production logging, production profile, logging instrument, simulated experiment, interpretation model

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