Results 21 to 30 of about 242,341 (155)
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
Sensing and computational frameworks for improving drill-string dynamics estimation [PDF]
, 2021 International audienceIn this paper, we consider the axial motion of a directional multi-sectional drill-string. The drillstring dynamics are represented by a distributed dynamical model (wave equations) coupled with an ordinary differential equation at ...
Auriol, Jean +5 more
core +1 more source
Vibrational Analysis of a Drill String [PDF]
, 2020 In drilling processes, dynamic vibrations are the leading causes of damages to drilling equipment. This damage can happen on the borehole wall, the drill string, and at the bottom hole assembly.
Allen, Matthew, Feeney, Gage
core +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
Component-Based Modeling and Simulation of Nonlinear Drill-String Dynamics [PDF]
, 2019 In this paper, we present a dynamic model for a generic drill-string. The model is developed with the intention for component-based simulation with coupling to external subsystems.
Tengesdal, Njål Kjærnes +5 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
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
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
Helical Buckling of Drill-Strings [PDF]
MATEC Web of Conferences, 2018 This paper presents experimental and numerical investigations of the complex drill-string vibration, with particular attention to the helical buckling of drill-strings and its influence on the system dynamics. The analysis is conducted using a novel experimental drilling rig, capable of exhibiting of all major types of drill-string vibration, including
Kapitaniak, Marcin +2 more
openaire +3 more sources
Analysis on Casing Wear Induced by Drill String Whirling during Workover Drill Grinding
Shiyou jixie, 2021 When the drill string rotates in the wellbore, it will whirl, collide with and rub against casing inwall, resulting in casing wear and reducing wellbore safety.
Cao Yinping +3 more
doaj