Analysis of the effects of torsional impact tools on drill string stick–slip vibration
Energy Exploration & ExploitationTorsional impactor is widely used in deep and ultra-deep wells because it can suppress stick–slip vibration and increase ROP. As the direct factor affecting torsional impactor effect, it's working parameters study is still not sufficient.
Chaoyi She +5 more
doaj +1 more source
Suppression of Drill-String Stick-Slip Vibration
MATEC Web of Conferences, 2018 We investigate experimentally and numerically suppression of drill-string torsional vibration while drilling by using a sliding mode control. The experiments are conducted on the novel experimental drilling rig developed at the University of Aberdeen [1]
Vaziri Vahid +2 more
doaj +1 more source
DIAGNOSTIC AND PERFORMANCE ANALYSIS OF DRILLSTRING VIBRATIONS IN ZUBAIR FIELD [PDF]
Romanian Journal of Petroleum & Gas Technology, 2020 In order to improve the drilling performance and prevent the drillstring damage, it is required to reduce the drilling vibrations of wells. Consequently, the main aim of paper is to diagnose and analyze the drilling vibrations for Zubair field wells ...
Hussein Al Gburi +3 more
doaj
LATERAL VIBRATION ANALYSIS OF DRILLSTRING USING FINITE ELEMENT METHOD [PDF]
, 2015 This project investigates lateral vibration of a drillstring under the action of weight on bit and drillstring rotation. The dominant cause of drillstring and bottom hole assembly’s failures, shocks and severe damages to borehole wall is recognized to be
A/L VADEVELOO, PIRAWIN
core
Investigation of coupled axial-lateral-torsional drillstring vibrations using a multi-body dynamics approach. [PDF]
, 2014 Drillstring vibration is a very crucial phenomenon which has a great effect on the drilling process. The drillstring is responsible to transfer rotary motion and energy to the drill bit. Unwanted vibration causes reduction in the rate of penetration (ROP)
Fallahi, Ehsan
core +1 more source
Journal of Marine Science and EngineeringIn 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 +4 more
doaj +1 more source
Stability analysis of coupled torsional vibration and pressure in oilwell drillstring system
, 2018 International audienceTo address security issues in oilwell drillstring system, the drilling operation handling which is in generally not autonomous but ensured by an operator may be drill bit destructive or fatal for the machine.
Toumi, Samir +3 more
core +1 more source
Transient vibration analysis of a completely free plate using modes obtained by Gorman's superposition method [PDF]
, 2010 This paper shows that the transient response of a plate undergoing flexural vibration can be calculated accurately and efficiently using the natural frequencies and modes obtained from the superposition method.
Ilanko, Sinniah, Yusuke, Mochida
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Drillstring Vibration Analysis in Extended Reach Drilling (ERD) using WELLPLANTM [PDF]
, 2012 Oil and gas industry always aims efficient service with optimal expenses. This final year project, aiming to deal with one of the most important parameters, that has tremendous impact on drilling operations’ time and cost.
MOHAMMED AHMED OMER, MOHAMMED AHMED
core
Study of the influences of rotary table speed on stick-slip vibration of the drilling system
Petroleum, 2015 Stick-slip vibration presents one of the major causes of drilling problems, such as premature tool failures, low drilling efficiency and poor wellbore quality.
Liping Tang +4 more
doaj +1 more source