Results 21 to 30 of about 4,494 (274)
Analysis of Drill String Coupled Vibration and Drilling Fluid Pressure in Downhole Section
Shiyou jixie, 2021 To address the problem of nonlinear coupled vibration of the drill string in the axial, lateral and torsional direction in the downhole section of deepwater drilling, a mathematical model of nonlinear coupled vibration of the drill string in the downhole
Liu Jing +5 more
doaj
Mechanical Modelling of Drill‐Strings [PDF]
PAMM, 2003 AbstractVibrations in long torsional strings result in spatio‐temporal dynamics. These vibrations disturb the accuracy of the drilling process and may cause damage due to fatigue. The high costs of drillings are the main motivation for the suppression of vibrations of the drill–string. In this paper a model for the drill string is proposed. In order to
E. Kreuzer, H. Struck
openaire +1 more source
Petroleum Exploration and Development, 2018 Drill string will sustain large uplift force during the shut-in period after gas overflow in an ultra-deep well, and in serious case, it will run out of the wellhead.
Hu YIN +4 more
doaj +1 more source
Stability Analysis and Visual Application of Drill String Drag and Torque Test Device
Shiyou jixie, 2021 The nonlinear buckling of the drill string during drilling affects the safe and stable operation of the drag and torque test device. For the horizontal well drag and torque test device, based on the dynamic software ADAMS, combined with the force balance
Wu Zebing +5 more
doaj
PASSIVE VIBRATION CONTROL OF PERIODIC DRILL STRING [PDF]
, 2017 In this dissertation, the stop and pass bands (i.e. the band gaps) characteristics are determined for gyroscopic systems by developing an approach which is compatible with such class of systems which is based on the concept of Bloch wave propagation in ...
Alsaffar, Yaser A.
core +1 more source
System for measurement and control of drill string vibration [PDF]
, 2021 The article discusses issues of ensuring effective and reliable measurement and control of drill string vibration. A system for active measurement and control of drill string vibration is presented.
Богачев, В. В. +4 more
core +1 more source
Vibration wave characteristics in Conventional and Periodic Drill string models [PDF]
, 2016 Drill string models are of two major types- Conventional and Periodic. Conventional drill string models are widely used due to their simplicity in manufacturing and dynamics analysis.
Sassi, Sadok +3 more
core +1 more source
Shiyou jixie, 2021 The stick-slip vibration of the horizontal well drill string system seriously threatens the safety of downhole drill strings and tools, reduces the drilling efficiency of the horizontal section, making the drill bit fail prematurely.
Zhu Jieran +5 more
doaj
Petroleum, 2023 Improper drilling parameters may cause severe vibration of drill string which leads to reduce the rate of penetration and drilling tool premature failure accidents in the drilling process of ultra-deep well.
Yuan Li +4 more
doaj +1 more source
, 2017 Drilling deep HPHT wells is the most compelling reason for drilling companies to look for alternative drill pipes that meet their requirements. Currently, with the emergence of drill pipes made of materials other than steel, a thorough study of ...
Bouali, Elahmoun +5 more
core +1 more source