![]() Issues such as equipment failure, pipe washouts, cutting accumulations, kicks, and well bore instability create significant drilling-related problems that increase nonproductive time and associated “red money.” In addition to lost time incidents, the optimum processes to clean and condition the hole in relation to hydraulics have a significant potential in avoiding “hidden” lost time, or the time spent on an operation performed off benchmark and consistency standards.Ĭonsequently, detailed monitoring of drilling hydraulics is a key element in a successful well construction process. Stuck and lost pipe situations can be encountered more frequently as a result of the complex well paths being drilled today, but these problems still must be avoided at all costs. All these circumstances make real‐time detection and verification of actual hydraulic-related problems during drilling a difficult challenge. In addition, the lack of accurate flow measurement in and out of the well on many rigs prohibits effective problem anticipation, and today’s measurement technology cannot quantify variations in downhole rheological modifications of drilling fluid properties in real time. ![]() ![]() Similar variations in pressure and flow parameters can be observed for different hydraulics-related problems. As an ever-present factor during drilling and tripping operations, hydraulics require special consideration, especially with the increase in drilling and completing highly inclined and extended-reach horizontal wells, which often results in situations where drilling hydraulic parameters are pushed to the limit. ![]() LEOBEN, AUSTRIA–Drilling hydraulics are a key parameter in the well construction process, and an array of operational problems encountered during drilling impact the fluid flow and pressure response of the circulation system. ![]()
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