Results 51 to 60 of about 4,548 (230)

Applying the contact element for simulation of interaction between drillstring and holewall

Vietnam Journal of Mechanics, 2003
The purpose of research is to create a contact element in order to simulate the dynamics contact phenomenon of drillstring and drillhole. The contact element is located at some selected node along the drillstring.
Le Phuoc Hao, Ta Quoc Dung
doaj   +1 more source

Vibration analysis of simultaneous drilling and reaming BHA

Journal of Petroleum Exploration and Production Technology, 2020
The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation.
Mohammed F. Al Dushaishi, Daniel S. Stutts   +1 more
doaj   +1 more source

Stochastic and Nonlinear Dynamic Response of Drillstrings in Deepwater Riserless Casing Drilling Operation

Journal of Marine Science and Engineering
In order to gain an insight into the stress state of drillstring in riserless drilling conditions with Casing while Drilling (CwD) technology, a stochastic and nonlinear dynamic model of the drillstring under the excitation of the environmental load is ...
He Li, Guodong Cheng, Shiming Zhou, Wenyang Shi, Jieli Wang   +4 more
doaj   +1 more source

Underreamer mechanics [PDF]

, 2009
In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David, Coskun, Erhan, Hall, Cameron, Jones, Marvin, Lacey, Andrew, Lorenz, Maike, Maringer, Johannes, Please, Colin, Richardson, Giles   +8 more
core  

Control of Drilling Vibrations: A Time-Delay System-Based Approach [PDF]

, 2013
International audienceThe main purpose of this study is the control of both axial and torsional vibrations occurring along a rotary oilwell drilling system.
Boussaada, Islam, Cela, Arben, Mounier, Hugues, Niculescu, Silviu-Iulian   +3 more
core   +3 more sources

Universal response of optimal granular damping devices [PDF]

, 2012
Granular damping devices constitute an emerging technology for the attenuation of vibrations based on the dissipative nature of particle collisions. We show that the performance of such devices is independent of the material properties of the particles ...
Bai, Bannerman, Brilliantov, Chen, Chung, Duan, Duncan, Friend, Gustavo Rosenthal, Kadanoff, Lieber, Liu, Lu, Luis A. Pugnaloni, Marhadi, Martín Sánchez, McNamara, Panossian, Papalou, Pöschel, Saeki, Salueña, Schäfer, Sánchez, Sánchez, Velichkovich, Xia   +26 more
core   +2 more sources

Design of a Testing Facility for Investigation of Drill Pipes Fatigue Failure

The Journal of Engineering Research, 2017
Drillstring and down-hole tool failure usually results from failing to control one or more of the vibration mechanisms. The solution starts with the ability to measure different modes of vibration, hence identifying different vibration mechanisms ...
Jamil Abdo, E. Hassan, A. Al-Shabibi, J. Kwak   +3 more
doaj   +1 more source

Fatigue of Drillstring: State of the Art [PDF]

Oil & Gas Science and Technology, 2002
Failure due to fatigue is a very costly problem in oil and gas industry. Many investigators have previously addressed this problem, but its frequency of occurrence is still excessive. Torque and tension can be correctly predicted but computations of fatigue duration are still approximate.
Vaisberg, O., Vincke, O., Perrin, G., Sarda, J. P., Fay, J. B.   +4 more
openaire   +2 more sources

Research on the Influence of Deep-Water Drilling Risers on Drillstring Motion Trajectory and Vibration Characteristics

Machines
The swing of the riser in deep-water drilling can significantly impact the drill string. In this study, we establish a riser model that considers the combined disturbance of periodic dynamic wind and wave loads. By coupling it with the drill string model,
Weiguo Hai, Yingming He, Qilong Xue
semanticscholar   +1 more source

The vibration harmonic response analysis of drillstring in compound drilling

Journal of Physics: Conference Series, 2022
The harmonic response analysis model of drillstring is established to improve borehole quality. The harmonic response laws of drillstring is discussed. Harmonic response analysis is made intensively for longitudinal vibration, including non-failure case ...
Long Tian, Zhenxin Jiang, G. Dong, Li Kedi, Jianhong Fu   +4 more
semanticscholar   +1 more source