Results 111 to 120 of about 1,261 (138)

Advanced Drillstring Dynamics System Integrates Real-Time Modeling and Measurements

Proceedings of SPE Latin American and Caribbean Petroleum Engineering Conference, 2003
Abstract This paper presents a newly developed drillstring dynamics system designed to avoid resonance and to reduce vibrations. The system integrates real-time dynamics modeling with real-time downhole vibration data to provide accurate modeling results and data analyses.
David C-K. Chen, Mark Smith, Scott LaPierre   +2 more
openaire   +1 more source

Model and Method for a Time-Efficient Analysis of Lateral Drillstring Dynamics

Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, 2015
The lumped parameter model and numerical method proposed in this paper aim at gaining a better understanding of the mechanisms leading to harmful lateral drillstring vibrations in inclined boreholes. The shooting method is applied to the equations of motion in order to skip transients and to arrive quickly at a steady state solution.
Ilja Gorelik, Marcus Neubauer, Jörg Wallaschek, Oliver Höhn   +3 more
openaire   +1 more source

Investigation on dynamics of drillstring systems from random viewpoint

2023
Drillstrings are one of the critical components used for exploring and exploiting oil and gas reservoirs in the petroleum industry. As being very long and slender, the drillstring experiences various vibrations during the drilling operation, and these vibrations are random in essence.
openaire   +1 more source

Research on the Drillstring Nonlinear Dynamics with Fully Coupled Drillstring-Bit-Rock Model

SSRN Electronic Journal, 2022
liangjie mao, Maoyuan Ma, Mingjie Cai
openaire   +1 more source

Nonlinear drillstring dynamics : modeling, vibration analysis, and control

Drilling engineering, standing at the core of geoenergy exploitation and geological information collection, faces different geological, hydraulic, and mechanical challenges that affect its efficiency and safety. Within the drilling system, nonlinear coupled tri-axial vibrations are major causes of premature downhole tool failures, excessive bit damage,
Zhang, Yifan, 1998-, 0000-0002-0918-5086
openaire   +1 more source

Nonlinear dynamics of oilwell drillstrings

1993
Mechanical Maritime and Materials ...
openaire   +1 more source

Modeling and experimental validation of axial drillstring dynamics

2009
No ...
Besselink, B., Wouw, van de, N.
openaire   +1 more source

Dynamics of a Buckled Drillstring Rotating in a Curved Oil Wellbore

1999
Drillstring failures caused by unstable rotation of the drilling assembly are continually ranked as one of the most frequent and costly problems in the oil industry. Although many other methods of oilwell drilling have been tried historically, rotary drilling technique dominates the industry. The drillstring components, i.e. drillpipes, are typically 5”
openaire   +1 more source

Dynamic Measurement of Spatial Attitude at the Bottom Rotating Drillstring

2019
In oil and gas directional drilling technology and application, how to accurately measurement the spatial attitude of the bottom drillstring in real time while the drillstring rotating is a challenging problem. We developed a set of “strap-down” measurement system using the triaxial accelerometer and triaxial magnetometers installed near the bit, and ...
openaire   +1 more source

Research on the dynamics of drillstring considering bit–rock nonlinear interaction

International Journal of Non-Linear Mechanics, 2023
Liangjie Mao, Mingjie Cai
exaly