Identifying the Optimum Zone for Reducing Drill String Vibrations

Christian, Etaje Darlington

doi:10.2118/189284-stu

Cited by 4 publications

(2 citation statements)

References 52 publications

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“…There are still many problems or drilling accidents generated by stick-slip, such as drillstring twist off, low ROP, poor wellbore trajectory, et al With the increase in the well depth and complexity of drilling technology, advanced and deep-going works are worthy to be done. For example, stick-slip phenomenon of the drillstring in directional or horizontal wells or ocean drilling, 131 the effects of system parameters on stick-slip phenomenon of drillstring, 132 and the methods for controlling this type of vibration. 133,134…”

Section: Discussionmentioning

confidence: 99%

Stick–slip vibrations in oil well drillstring: A review

Tang

Guo

Zhu

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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A survey of the literature related to theoretical and experimental studies on stick-slip vibration in oilwell drillstring is carried out in this study. It aims to explain key concepts and present the existing methods for studying this phenomenon. After briefly describing the stick-slip vibration related problems, theoretical models for such phenomenon are discussed including both coupled and uncoupled models. Discussion for experimental investigations including both laboratory and field tests are hereinafter addressed. This study aims to summarize the literature related to the stick-slip vibration, and help researchers in understanding and suppressing such phenomenon.

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Section: Discussionmentioning

confidence: 99%

Stick–slip vibrations in oil well drillstring: A review

Tang

Guo

Zhu

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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“…5, drilling would occur with higher efficiency. Some combinations of WOB x RPM (Christian, 2017) can result in complex and detrimental effects to drilling performance, like bit whirl, stick slip, bit bounce, linear coupling, parametric coupling between axial and bending vibrations (Jogi, P.N. et al, 2002), and chaotic whirl (Christoforou & Yigit, 1997).…”

Section: Vibrationsmentioning

confidence: 99%

New Industry Standards to Increase the Reliability of Drilling Operations

Amorim

Santos

Azevedo

2019

HOLOS

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Design engineers select drilling bits based on their professional experience and knowledge about the area of the upcoming wells. Due to the absence of widely accepted algorithms for this task, diverse performance projections can come out if prepared by different persons. By selecting bits to withstand ranges of parameters similar to the used in offset wells, less failures and longer runs can be expected. In deeper wells, a slow increase in the modes of string harmonics makes well planning complex, becoming crucial for the endurance of drilling bits to avoid resonance. Two new standards are proposed to the Oil & Gas industry in this article, created to make well planning more effective and to increase safety in selecting drilling parameters at the rig. An environment of higher drilling efficiency will result in more reliable operations and lower operational costs. RESUMO Engenheiros de projetos selecionam brocas para poços vindouros baseados em sua experiência profissional e o conhecimento da área. Devido à ausência de algoritmos de aceitação geral para essa tarefa, diferentes profissionais terminarão por produzir projetos diferentes. Ao selecionar brocas adequadas para suportar parâmetros similares aos utilizados nos poços de correlação, trechos mais longos e menos falhas podem ser esperados. À medida que os poços se aprofundam há um lento incremento no número de harmônicos de vibração da coluna de perfuração, o que torna projetos de poço ainda mais complexos, sendo crucial para a sobrevivência das brocas evitar a ressonância. Nesse artigo dois novos padrões são propostos para a indústria de petróleo, criados para tornar um projeto de poço mais efetivo, bem como aumentar na sonda a segurança na seleção de parâmetros adequados. Um sistema de perfuração mais eficiente deverá produzir operações mais seguras, confiáveis e de menor custo operacional.

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