Journal of Canadian Petroleum Technology
Volume 49, Number 12, December 2010, pp. 19-27

SPE-143003-PA

Drilling Challenges in the Bitumen-Saturated Grosmont Formation

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DOI  More information 10.2118/143003-PA http://dx.doi.org/10.2118/143003-PA

Citation

  • Arseniuk, S.E., Becker, D.L., Barrett, K.R., and Keller, D. 2010. Drilling Challenges in the Bitumen-Saturated Grosmont Formation. J Can Pet Technol  49 (12): 19–27. SPE-143003-PA. doi: 10.2118/143003-PA.

Discipline Categories

  • 1.2 Drilling Design and Analysis

Keywords

  • heavy oil, Grosmont formation, foamed cement, foam, lost circulation

Summary

The Upper Devonian Grosmont formation, located in the West Athabasca oil sands deposit, contains an estimated 318 billion barrels of bitumen. The reservoir is a heavily karsted and fractured, bitumen-saturated dolomite with up to 38% porosity and permeabilities commonly measured in the darcies. These properties make the Grosmont an excellent candidate for steam assisted gravity drainage (SAGD). Grosmont SAGD development will be exposed to similar operating conditions as McMurray SAGD projects, and will have similar logistics, well construction and materials challenges. However, there are many additional challenges, including severe loss circulation, that further complicate well design. This paper presents the challenges experienced by Laricina Energy in drilling Grosmont wells at Saleski and Burnt Lakes over the last three seasons. It will also address additional areas for future research and development in the drilling of vertical and horizontal wells.

© 2010. Society of Petroleum Engineers

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History

  • Original manuscript received: 23 March 2009
  • Meeting paper published: 16 June 2009
  • Revised manuscript received: 6 July 2010
  • Manuscript approved: 27 September 2010
  • Published online: 1 December 2010
  • Version of record: 1 December 2010