Drilling is one of the most challenging and expensive processes in hydrocarbon extraction
and geothermal well development. Dysfunctions faced during drilling can increase the non …

We develop a dynamic model of a drill-string in a horizontal well having six Degrees-Of-
Freedom, which accounts for longitudinal, lateral and torsional motions. In this model …

High‐frequency measurements can provide much more new insights for drillstring dynamics
compared to traditional instruments, leading to a new realm of understanding of drillstring …

钻进过程的高速旋转和强振动, 使得测量钻具姿态的三轴惯性加速度计信号中叠加了离心加速度
和振动加速度, 导致工具姿态测量结果严重失真. 针对由三轴惯性加速度计, 三轴磁通门和角速率 …

Downhole drill string vibration data can provide an effective reference for research drill string
vibration during drilling. In this paper, the research group used a storage-type downhole …

In this article, a systematic linear parameter-varying (LPV) model and a gain-scheduled
control methodology for drill-string systems are proposed to analyze drill-string dynamics …

The pendulum model is a classic model in physics and has important theoretical and
practical significance. In the actual application process of engineering, the characteristic that …

A three-dimensional finite element dynamics model of drill-string is established considering
dynamic friction model and buckling effect. The modified dynamics model is proved to have …

Stick-slip of the drill string, as one of the critical factors affecting drilling efficiency, has
always been a hot topic for experts and scholars in related fields. Serious stick-slip vibration …

Vibration signal measurement is one of the important methods to study the movement mode
of the drill string. Through the interpretation of the vibration signal, the vibration pattern of the …