Prediction of the Optimal Drilling Mud Weight Based on the Normalized Yielded Zone Area (NYZA) in One of the Iranian Oil Fields

Authors

  • Mohamad HEIDARIAN Young Researcher’s Society, Shahid Bahonar University, Kerman
  • Mahin SCHAFFIE Department of Petroleum Engineering, Shahid Bahonar University, Kerman
  • Hosein JALALIFAR Department of Petroleum Engineering, Shahid Bahonar University, Kerman
  • Saeed JAFARI Department of Petroleum Engineering, Shahid Bahonar University, Kerman

Keywords:

Stability, optimum mud weight, finite element, plastic strain, Drucker-Prager criterion

Abstract

Hole problems experienced during the drilling phase of operations are often the consequence of mechanical wellbore instability. This leads to higher than necessary drilling costs. The only controllable factor that can prevent wellbore instability is the drilling mud. In this study, the optimal drilling mud weight to prevent instability using the Finite Element Method (FEM) was simulated in one of the fields of Southwest Iran. To determine the optimal drilling mud weight, the various hydrostatic pressure equivalents to mud weight were applied and plastic strains and stresses were obtained and analyzed. The obtained results from the predicted mud weight using FEM appeared to have a 0.14 % error with the reported drilling mud weight, which shows a good agreement between the obtained simulated results and field evaluations.

doi:10.14456/WJST.2014.43

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Author Biographies

Mohamad HEIDARIAN, Young Researcher’s Society, Shahid Bahonar University, Kerman

Department of Petroleum Engineering

Mahin SCHAFFIE, Department of Petroleum Engineering, Shahid Bahonar University, Kerman

Department of Petroleum Engineering

Hosein JALALIFAR, Department of Petroleum Engineering, Shahid Bahonar University, Kerman

Department of Petroleum Engineering

Saeed JAFARI, Department of Petroleum Engineering, Shahid Bahonar University, Kerman

Department of Petroleum Engineering

References

A Chilingarian. Stability During Drilling. In: Petroleum Related Rock Mechanic. 2¬nd ed. Elsevier, Amsterdam, 1992, p. 309-12.

J Hudson and A Harrison. Introduction to Principles Engineering Rock Mechanics. Academic Press, London, 1997, p. 1-14.

A Ezzat. Horizontal drilling and completion fluids design criteria. In: Proceeding of the 6th SPE Middle East Oil Technical Conference and Exhibition, Kingdom of Bahrain, Bahrain, 1993, p. 645-54.

F Santarelli, J Zaho and G Burrafato. Wellbore stability analysis made easy and practical. In: Proceeding of the Society of Petroleum Engineers Conference, New Orleans, Louisiana, 1996, p. 523-32.

A Onaisi, J Locane and A Razimbaud. Stress related wellbore instability problems in deep wells in ABK field. In: Proceeding of the 9th Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, UAE, 2000, p. 428-36.

M Mohiuddin, K Khan, A Majed and A Abdulraheem. The analysis of wellbore instability in vertical, directional, and horizontal wells using field data. J. Pet. Sci. Eng. 2007; 55, 83-92.

M Ardakani. 2010, The analysis of the wellbore stability in open hole wells. Master Dissertation. University of Islamic Azad, Omidieh, Iran.

M Shahri. 2005, Detecting and modeling cement failure in high pressure/high temperature wells using finite element method. Master Dissertation, University of Texas, Texas, American.

D Roylance. Finite Element Analysis. Academic Press, Cambridge, 2001, p. 55-76.

J Lubliner. Plasticity Theory. Academic Press, California, 2006, p. 103-52.

L Lake and R Mitchell. Handbook of Petroleum Engineering. Vol. II. Spe, Texas, 2006, p. 433-55.

S Salehi and G Hareland. Wellbore stability analysis in UBD wells of Iranian fields. In: Proceeding of the 15th SPE Middle East Oil & Gas Conference, Kingdom of Bahrain, Bahrain, 2007, p. 111-9.

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Published

2013-10-31

How to Cite

HEIDARIAN, M., SCHAFFIE, M., JALALIFAR, H., & JAFARI, S. (2013). Prediction of the Optimal Drilling Mud Weight Based on the Normalized Yielded Zone Area (NYZA) in One of the Iranian Oil Fields. Walailak Journal of Science and Technology (WJST), 11(3), 263–271. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/349