Results 11 to 20 of about 1,143,416 (115)
Self-Attenuation of Drillstring Torsional Vibrations Using Distributed Dampers [PDF]
SPE Journal, 2023 During drilling operations, drillstring vibrations cause many downhole dysfunctions, resulting in underperformance, equipment failure, and possibly wellbore damage.
E. Cayeux, A. Ambrus
semanticscholar +2 more sources
Experimental analysis of drillstring vibrations using a small-scale drilling rig [PDF]
Nonlinear dynamicsAs global demand for energy continues to increase, the optimisation of oil and gas drilling being the largest energy source is essential to reducing global warming and environmental impact.
A. Al Shekaili +3 more
semanticscholar +2 more sources
EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF ROTATIONAL SPEED AND WEIGHT ON BIT ON DRILLSTRING VIBRATIONS, TORQUE AND RATE OF PENETRATION [PDF]
, 2017 Experimental investigation was carried out on an automated drilling rig fabricated for the Drillbotics competition. The effects of rotational speed and weight on bit were observed on drillstring vibrations, torque and rate of penetration for two ...
V. Bavadiya +3 more
semanticscholar +3 more sources
Journal of Sensors, Volume 2022, Issue 1, 2022., 2022 This study presented an empirical correlation to estimate the drilling rate of penetration (ROP) while drilling into a sandstone formation. The equation developed in this study was based on the artificial neural networks (ANN) which was learned to assess the ROP from the drilling mechanical parameters.
Ahmad Al-AbdulJabbar +4 more
wiley +1 more source
Analysis of the Effect of Whirl on Drillstring Fatigue
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 There are many kinds of vibration forms of drillstring in petroleum drilling. Whirl is one of the main vibration modes when drilling tools are drilling, and it is also the main reason of fatigue failure of the drillstring. In this paper, the causes of drillstring whirl are analyzed.
Chong Wang +5 more
wiley +1 more source
Fractional-order controllers for stick-slip vibration mitigation in oil well drill-strings
Journal of Low Frequency Noise, Vibration and Active Control, 2021 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.
Massinissa Derbal +4 more
doaj +1 more source
IEEE Access, 2023 A detailed methodology to develop a digital twin has many useful applications in the era of technology 4.0. This study provides a framework to develop a digital twin for vibration prediction and fatigue life prognosis of a vertical oil well drillstring ...
Mihiran Galagedarage Don, Geoff Rideout
doaj +1 more source
Experimental Study on Axial Impact Mitigating Stick‐Slip Vibration with a PDC Bit
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Stick‐slip vibration reduces the drilling rate of penetration, causes early wear of bits, and threatens the safety of downhole tools. Therefore, it is necessary to study suppression methods of stick‐slip vibration to achieve efficient and safe drilling.
Yong Wang +8 more
wiley +1 more source
Journal of Earth Energy Engineering, 2021 Drillstrings often vibrate severely and tend to twist off during hard rock drilling. Therefore, dynamic testing is crucial in the design of drilling systems. Designers tend to employ the most powerful analytical tools, using the most elaborate electronic
Mejbahul Sarker
doaj +1 more source
Modelling and analysis of stick-slip behaviour in a drillstring under dry frictions [PDF]
, 2004 Stick-slip vibrations present at the bottom hole assembly(BHA) of a generic oilwell drillstring subject todry friction are studied. Different nonlinear differentialequations-based models of a drillstring are analyzed.
Suarez, R. +2 more
core +10 more sources