1887

Abstract

Summary

The oil industry is moving towards increasingly complex plays with challenging uncertainties and narrow drilling windows. To meet such a challenge Managed Pressure Drilling is increasingly being used to manage narrow pore pressure windows and drill deeper, higher pressure and higher temperature wells than was previously possible. At the same time the industry is facing stronger environmental and safety regulations that demand an improvement in risk characterization and pore pressure detection. While the new data from such techniques is valuable in constraining the pore pressure, it comes in new formats and often replaces or excludes some of traditional data such as connection gas that are normally used in real time pore pressure detection. Two cases are presented from two oil & gas exploratory wells in which the application of MPD (Managed pressure drilling) technique was critical for the success of the operation and where valuable pore pressure information was obtained to characterize and manage the drilling window. We conclude that MPD is an important tool in drilling wells with a narrow pore pressure and fracture gradient window. While MPD complicates some of the traditional methods of pore pressure estimation, it can be used proactively to get more accurate estimates.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201900507
2019-05-19
2019-12-08
Loading full text...

Full text loading...

References

  1. AlbertyM.W. and FinkK.
    [2013] Using Connection and Total Gases Quantitatively in the Assessment of Shale Pore Pressure. Society of Petroleum Engineers. doi:10.2118/166188‑MS
    https://doi.org/10.2118/166188-MS [Google Scholar]
  2. MedleyG.H. ReynoldsP.B.B.
    [2006] Distinct variations of managed pressure drilling exhibit application potential. World Oil, pp 41–45.
    [Google Scholar]
  3. Mouchet, J. P; and Mitchell, A.
    [1989] Abnormal Pressures While Drilling. Manuels Techniques2, Elf Aquitaine, pp287.
    [Google Scholar]
  4. Starkey, C., Webre, T., Rafferty, M., Fredericks, P., & Hobin, J.
    [2016] MPD Application for Ultra-HPHT Wellbore. Society of Petroleum Engineers. doi:10.2118/179184‑MS
    https://doi.org/10.2118/179184-MS [Google Scholar]
  5. Tang, J., Prasetia, A. E., Gallo, F., Rojas, F., & Rubianto, I.
    [2015] Making the Impossible Possible with MPD Application on 0.4 ppg Mud Weight Window — A Case History Successful Automated Managed Pressure Drilling, Managed Pressure Run 11-3/4” Liner & 9-5/8” Liner (Tieback Liner), and Managed Pressure Cementing in a Semisubmersible Offshore Sarawak Malaysia. Society of Petroleum Engineers. doi:10.2118/174830‑MS
    https://doi.org/10.2118/174830-MS [Google Scholar]
  6. Toralde, J. S. S.
    [2014] Pressurised Mud Cap Drilling, Downloaded from:http://www.spe.org/training/courses/PMCD.php, (accessed 18.03.2014)
    [Google Scholar]
  7. Wenaas, A.
    [2014] A case study of how MPD Techniques Can Be Used to Adapt to Uncertain Pore and Fracture Pressure Gradients. MSc Thesis, Norwegian University of Science and Technology.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201900507
Loading
/content/papers/10.3997/2214-4609.201900507
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error