Forage et complétion de puits

Kelly Saver Sub

Protéger le cœur du Rig : Le Kelly Saver Sub

Dans le monde exigeant du forage pétrolier et gazier, le kelly, l'arbre de rotation reliant le top drive à la colonne de forage, est un composant crucial. Il subit de plein fouet les forces de forage et ses filets sont sujets à l'usure. Pour protéger cet atout précieux et garantir un forage fluide, le **Kelly Saver Sub** joue un rôle essentiel.

**Qu'est-ce qu'un Kelly Saver Sub ?**

Un Kelly Saver Sub est un sous-ensemble fileté court qui est monté sur le kelly. La colonne de forage est ensuite connectée au Kelly Saver Sub, agissant efficacement comme un point de connexion sacrificiel. Cette conception déplace stratégiquement l'usure des filets du kelly vers ceux du Kelly Saver Sub, protégeant ainsi le composant le plus précieux.

**Principales caractéristiques et avantages :**

  • **Durée de vie du kelly prolongée :** En protégeant les filets du kelly de l'usure, le Kelly Saver Sub prolonge la durée de vie de cette pièce d'équipement essentielle. Cela se traduit par des économies de coûts significatives et une réduction des temps d'arrêt pour la maintenance du rig.
  • **Maintenance simplifiée :** Le Kelly Saver Sub est facilement remplaçable, permettant une maintenance rapide et simple sans perturber le forage.
  • **Réduction de l'usure des équipements :** Le transfert de l'usure vers le Kelly Saver Sub minimise les dommages au kelly, au top drive et aux autres composants du rig de forage.
  • **Sécurité améliorée :** Un kelly bien entretenu garantit un fonctionnement plus fluide, réduisant le risque d'accidents et de temps d'arrêt dus à une panne d'équipement.

**Applications typiques :**

Les Kelly Saver Subs sont couramment utilisés dans :

  • **Forage pétrolier et gazier :** Protéger le kelly pendant le processus exigeant du forage de puits.
  • **Forage géothermique :** De même que pour le pétrole et le gaz, le forage géothermique implique une usure importante des équipements, faisant du Kelly Saver Sub un atout précieux.
  • **Forage directionnel :** Les contraintes supplémentaires du forage directionnel soulignent encore davantage l'importance de protéger le kelly.

**Conclusion :**

Le Kelly Saver Sub est un outil simple mais efficace qui joue un rôle essentiel dans le maintien de l'efficacité et de la sécurité des opérations de forage. En protégeant le kelly de l'usure excessive, il garantit un processus de forage plus fluide, prolonge la durée de vie de l'équipement et réduit les coûts globaux. Son utilisation témoigne de l'importance de la maintenance proactive et de la poursuite de performances optimales dans le monde exigeant du forage.

Test Your Knowledge

Kelly Saver Sub Quiz

Instructions: Choose the best answer for each question.

1. What is the primary function of a Kelly Saver Sub?

a) To increase drilling speed. b) To protect the kelly's threads from wear. c) To connect the top drive to the drill string. d) To prevent the drill string from twisting.

Answer

b) To protect the kelly's threads from wear.

2. What is the main benefit of using a Kelly Saver Sub?

a) Increased drilling depth. b) Reduced drilling time. c) Extended kelly lifespan. d) Improved drilling accuracy.

Answer

c) Extended kelly lifespan.

3. Where is the Kelly Saver Sub typically positioned in the drilling system?

a) Between the top drive and the drill string. b) At the bottom of the drill string. c) Inside the kelly. d) On the drill floor.

Answer

a) Between the top drive and the drill string.

4. In which type of drilling operation is the Kelly Saver Sub particularly important?

a) Vertical drilling. b) Horizontal drilling. c) Directional drilling. d) All of the above.

Answer

d) All of the above.

5. Which of the following is NOT a benefit of using a Kelly Saver Sub?

a) Reduced maintenance costs. b) Increased safety during drilling operations. c) Increased drilling efficiency. d) Reduced need for specialized drilling tools.

Answer

d) Reduced need for specialized drilling tools.

Kelly Saver Sub Exercise

Scenario: You are working on a drilling rig that is experiencing significant wear and tear on the kelly threads. The drill crew is concerned about the potential for premature failure of the kelly, leading to costly downtime and potential safety risks.

Task: Propose a solution using a Kelly Saver Sub to mitigate the wear and tear on the kelly, explaining the benefits and steps involved in implementing this solution.

Exercise Correction

**Solution:** Implement a Kelly Saver Sub in the drilling system. **Benefits:** * **Extended Kelly Lifespan:** The Kelly Saver Sub will take the brunt of the wear, protecting the more valuable kelly and extending its service life. * **Reduced Downtime:** By preventing premature kelly failure, the Kelly Saver Sub will minimize downtime for repairs or replacements. * **Improved Safety:** A well-maintained kelly ensures smoother drilling operations, reducing the risk of accidents and equipment failure. **Steps:** 1. **Select a suitable Kelly Saver Sub:** Consider the size and thread type of your kelly and choose a compatible Kelly Saver Sub. 2. **Install the Kelly Saver Sub:** Disconnect the drill string from the kelly, install the Kelly Saver Sub on the kelly, and then connect the drill string to the Kelly Saver Sub. 3. **Monitor and Replace:** Regularly inspect the Kelly Saver Sub for wear and tear. Replace it when necessary to ensure continued protection for the kelly. **Conclusion:** By implementing a Kelly Saver Sub, the drilling crew can address the issue of kelly wear, improve the reliability and longevity of the drilling equipment, and enhance safety on the rig.

Books

  • Drilling Engineering: This comprehensive textbook covers various aspects of drilling, including equipment and accessories. It may contain sections about kelly saver subs.
  • Petroleum Engineering Handbook: A vast resource on petroleum engineering with potential details about drilling equipment and techniques, potentially including kelly saver subs.

Articles

  • Search for "Kelly Saver Sub" on online platforms: Use platforms like Google Scholar, ScienceDirect, and JSTOR to find research papers or technical articles discussing kelly saver subs.
  • Technical journals focused on drilling and well engineering: Journals such as "SPE Drilling & Completion," "Journal of Petroleum Technology," and "Drilling & Well Completion" may feature articles on kelly saver subs.

Online Resources

  • Manufacturer websites: Companies specializing in drilling equipment, like Baker Hughes, Halliburton, Schlumberger, etc., may have product pages or technical information about kelly saver subs.
  • Drilling equipment supplier websites: Sites like "RigZone" and "Oil & Gas Journal" often have directories of drilling equipment suppliers, where you may find detailed information on kelly saver subs.

Search Tips

  • Combine keywords: Use specific terms like "Kelly Saver Sub," "Kelly Saver Sub specifications," "Kelly Saver Sub applications," etc.
  • Include company names: Search for "Baker Hughes Kelly Saver Sub," "Halliburton Kelly Saver Sub," etc., if you're looking for specific brands.
  • Use quotation marks: Enclosing your search term in quotation marks (e.g., "Kelly Saver Sub") will find exact matches.

Techniques

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