Reliability Methods Applied to Drilling Operations

Ligrone, A.; Botto, Giovanni; Calderoni, A.

doi:10.2523/29355-ms

Cited by 2 publications

(3 citation statements)

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“…Ligrone [47] has issued a tool to estimate the performance of a given drillstem with small set of data. It is based on Blom's algorithm, see (26), which gives the decrease estimation of the probability of success of an item i with time.…”

Section: Quality and Frequency Of Inspection Methodsmentioning

confidence: 99%

“…The inspection contractor frequently operates in a conflict of interest environment. Ligrone [47] reports an interesting example of failures and lost time per well with and without nondestructive tests (Table 6). Due to the low reliability of the existing inspection methods and the lack of standard recommendations, we do believe that the field is still open to improvement.…”

Section: Quality and Frequency Of Inspection Methodsmentioning

confidence: 99%

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Fatigue of Drillstring: State of the Art

Vaisberg

Vincké

Perrin

et al. 2002

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Fatigue des tiges de forage : état de l'art -La rupture des tiges de forage est un problème coûteux dans l'industrie de ce secteur. Bien que de nombreux spécialistes se soient penchés sur ce point, la fréquence des ruptures demeure toujours importante. Les ruptures par torsion ou par tension restent toutefois limitées, car les causes en sont connues et peuvent être aisément corrigées, en revanche, les ruptures par fatigue sont plus difficilement appréhendées. Le présent article se propose d'établir un état de l'art sur la fatigue des tiges de forage. La prédiction et les calculs d'un dommage de fatigue sont ici abordés selon la méthode simpliste du cumul de dommage (somme de Miner) mais aussi de façon plus complexe, par l'utilisation des éléments de la mécanique de la rupture. Les méthodes d'inspection et leurs limitations sont discutées, des recommandations sont également émises. Par ailleurs, des tests de fatigue sont mis en oeuvre face au risque humain ou environnemental. Cette étude précise les conditions de chargement, la fréquence des essais, le nombre et la taille des éprouvettes. Nous rappelons les effets d'un environnement corrosif ainsi que leur prévention, bien que ce sujet ne soit pas l'objet principal de cet article. Le dernier chapitre résume les différentes façons d'améliorer les tiges de forage. À ce titre, il aborde la géométrie, le design des connexions, les propriétés de l'acier telles que la résilience, le rechargement dur des tool-joints et l'inspection des garnitures de forage.

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Section: Quality and Frequency Of Inspection Methodsmentioning

confidence: 99%

Section: Quality and Frequency Of Inspection Methodsmentioning

confidence: 99%

Fatigue of Drillstring: State of the Art

Vaisberg

Vincké

Perrin

et al. 2002

Oil & Gas Science and Technology - Rev. IFP

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“…The automatic vertical drilling systems are widely used in drilling high-steep formations, and they could facilitate to liberate drilling parameters (such as weight on bit and rotary rate) to achieve anti-inclination and ideal rate of penetration (ROP) [1][2][3][4] . In recent years, domestic and foreign vertical drilling systems have made great progress in serialized R&D and application.…”

Section: Introductionmentioning

confidence: 99%

Selection of automatic vertical drilling system for the fourth section in Shunbei 11 well, Tarim basin, China

et al. 2021

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Based on the introduction of the working principles of various automatic vertical drilling systems (VDS), the latter are divided into rotary push type and sliding push type. Then the technical advantages and applicable scope of various types of drilling tools are analysed. Combined with the latest domestic application progress and typical case analysis of the vertical drilling system, the future development direction of the vertical drilling technology is predicted. The results show that, the existing vertical drilling technology can better meet the technical needs of rapid drilling in the middle-deep sections with high steep angles. While the stability of wireless information transmission and wear resistance of the push pad still need further improvement. The new type of vertical drilling system that is miniaturized (suitable for small boreholes) and resistant to high temperature and high pressure is in urgent need to fill the gaps in the market segment. Domestic independent vertical drilling systems have made great progress, some even surpass foreign products in key indicators such as temperature resistance, in addition to achieving the technical goal of anti-inclination successfully. Finally, based on the engineering geological conditions of Shunbei 11 well, feasible vertical drilling tools were recommended and achieved engineering goal finally. The research results can provide support for the drilling company to optimize the vertical drilling system based on engineering-geological conditions.

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Reliability Methods Applied to Drilling Operations

Cited by 2 publications

References 0 publications

Fatigue of Drillstring: State of the Art

Fatigue of Drillstring: State of the Art

Selection of automatic vertical drilling system for the fourth section in Shunbei 11 well, Tarim basin, China

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