In this research, as a case study the Iranian Khangiran gas field has been evaluated to optimize the drilling costs. In the mathematical optimization technique, some numerical equations to model the penetration rate, bit wear rate and hydraulics would be used to minimize the drilling cost and time as much as possible and improve the results of the primary comparative optimization. In the comparative optimization method, by using the records of the first drilled wells and comparing the criteria like penetration rate, cost per foot and specific energy, the drilling parameters of the next wells being drilled can be optimized in each depth interval. This is done by the ADT and/or AFT (Applied Fluid Technology) specialist by using static and RT-models for hydraulics, hole-cleaning and Torque&Drag to predict. This combination book and website arrangement will prove particularly useful to drilling and production engineers who need to plan operations including pipe-tripping, running-in casing, and. Returning to our story: It was hot and dry on location. The drilling fluid’s density and rheological properties are the parameters that affect this hydraulic efficiency.
Drilling time could be minimized by raising the penetration rate. The major goal of hydraulics optimization is to balance hole cleaning, pump pressure, and pressure drop across the bit. In drilling operation, a large saving in time and money would be achieved by reducing the drilling time, since some of the costs are time-dependent.
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