OPTIMIZATION DESIGN METHODS OF OPTIMUM ROP
During drilling, drilling time has obvious difference for different drill site under the condition of the same total depth and same structure, apart from the influential factor of formation characteristics, engineers’ technical ability plays an important role in determining drilling time. At present, evaluating ROP usually compares with adjacent wells real drilling data, which is lack of adequate data for effective assessment the new development fields. Therefore, in this paper, a new method of evaluating the performance of the drilling was established in considering the drilling parameter, make-up of string and subsurface safety etc. The new evaluation method applied optimizing drilling parameters to improve ROP and save drilling cost.