Browsing Mechanical & Industrial Engineering by Author "Refaat, Shady S."
Now showing items 1-2 of 2
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Fractional-order controllers for stick-slip vibration mitigation in oil well drill-strings
Derbal, Massinissa; Gharib, Mohamed; Refaat, Shady S.; Palazzolo, Alan; Sassi, Sadok ( SAGE , 2021 , Article)Drillstring–borehole interaction can produce severely damaging vibrations. An example is stick–slip vibration, which negatively affects drilling performance, tool integrity and completion time, and costs. Attempts to ... -
Hybrid fuzzy sliding mode for stick-slip suppression in drill string systems
Krama, Abdelbasset; Gharib, Mohamed; Refaat, Shady S.; Sassi, Sadok ( Korean Society of Mechanical Engineers , 2022 , Article)Stick-slip vibration is one of the main factors that contribute greatly to reducing the service life of drill string equipment and decreasing the efficiency of the overall drilling system. Thus, it would be very desirable ...