Results 11 to 20 of about 1,256 (185)
Dynamic Analysis of a Drillstring-Riser System Drilling in Deep Water [PDF]
MATEC Web of Conferences, 2018 A mathematical model of a drillstring-riser system is developed to analyze the system dynamics when drilling in deep water. For the proposed model, a riser and a drillstring are combined as a pipe-in-pipe structure, along which the interactions between ...
Liao Maolin +4 more
doaj +3 more sources
Laboratory-Scale Drillstring Vibration Analysis
MiningDrillstring vibrations are detrimental to drill bits and downhole equipment, affecting drilling efficiency and operational cost in severe drillstring vibration cases.
Eshan K. Maitra +1 more
doaj +2 more sources
Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well
Shock and Vibration, 2020 Stick-slip is very harmful to the service life of drillstring. The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model.
Baojin Wang, Zhongyang Wang, Fushen Ren
doaj +2 more sources
Shock and Vibration, 2014 In the oil industry, the accompanied reverberation is a major constraint in the transmission rate and distance because the drillstring is a heterogeneous assembly.
Li Cheng +3 more
doaj +2 more sources
Shock and Vibration, 2014 A new method of wireless data telemetry used by oil industry uses compressional acoustic waves to transmit downhole information from the bottom hole to the surface.
Li Cheng +4 more
doaj +2 more sources
Stress analysis of drillstring threaded connections [PDF]
, 2011 The demand for energy from developed and developing economies of the world is driving the search for energy resources to more challenging environments.
Salihu, B. M.
core +7 more sources
Geophysical Prospecting, Volume 71, Issue 7, Page 1338-1355, September 2023., 2023 Abstract The undesired drill‐bit deviation is a source of drilling risks and requires monitoring. Seismic‐while‐drilling is one potential method to achieve this and has been tested in a number of previous studies. In August 2020 in Örebro, Sweden, we conducted an experiment to test the feasibility of seismic‐while‐drilling drill‐bit positioning and ...
Zbigniew Wilczynski +3 more
wiley +1 more source
Nonlinear Drillstring Dynamics Analysis [PDF]
SIAM Journal on Applied Dynamical Systems, 2009 This paper studies the dynamical response of a rotary drilling system with a drag bit, using a lumped parameter model that takes into consideration the axial and torsional vibration modes of the bit. These vibrations are coupled through a bit-rock interaction law.
Germay, Christophe +3 more
openaire +1 more source
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