Results 21 to 30 of about 4,548 (230)
Space Weather, Volume 20, Issue 12, December 2022., 2022 Abstract Directional drilling in the oil fields relies particularly on the “on‐fly” measurements of the natural magnetic field (measurements while drilling; MWD); the MWD are eventually used to construct the well path. These measurements are the superposition of the signals from the internal, core and crustal, and external, ionospheric and ...
Mikhail Kruglyakov +2 more
wiley +1 more source
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
Study on Distribution of Wellbore Temperature in Gas Drilling with Gradient Equations
Geofluids, Volume 2021, Issue 1, 2021., 2021 Precise calculation of gas temperature profile is the key to gas drilling design. It is traditionally assumed that the gas temperature distribution in the wellbore is equal to the formation temperature, without considering the influence of fluid flow and Joule‐Thomson cooling effect.
Zhongxi Zhu +4 more
wiley +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
Use of the energy of parametric oscillations to improve drilling indices [PDF]
, 2011 Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” system to improve drilling indices.
Bakenov +11 more
core +2 more sources
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
Analysis on the lateral vibration of drill string by mass effect of drilling fluid [PDF]
Mechanical Sciences, 2019 It is well known that the influence of the internal and external drilling fluid on the lateral vibration characteristics of drillstring cannot be ignored. In this paper, experiment apparatus for simulating drillstring vibration was established. Hammering
C. Yang +4 more
doaj +1 more source
Self-Attenuation of Drillstring Torsional Vibrations Using Distributed Dampers
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 +1 more source
Mechanical Analysis of DS in Horizontal Directional Drilling
Applied Sciences, 2022 In recent years, trenchless horizontal directional drilling (HDD) technology has developed rapidly towards the direction of large pipe diameter and long span. During construction, the buckling deformation and large drag torque of the drillstring (DS) are
Hua Tong, Yongbo Shao
doaj +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