Preparation of micro-bubble (Aphron) drilling fluid used in low pressure reservoirs

  • Nguyen Tuan Anh
  • Ta Quang Minh
  • Nguyen Thi Thu Hien
Keywords: Drilling fluid, micro-bubble, Aphron, low pressure reservoirs

Abstract

The paper presents the process of preparing micro-bubble (Aphron) drilling fl uid, which mainly comprises an anionic surfactant (SLES), a xanthan gum polymer and a two-component surfactant system of NP9/SLES. The proportions of these components were also optimised. Core-fl ood testing with Bach Ho’s core samples at 120oC showed that this drilling fl uid could prevent fl uid from penetrating into the core better than the polymer-clay drilling fl uidcurrently used at Vietsovpetro. Moreover, the return permeability of these core samples was nearly 90% of the original ones, which demonstrates that Aphron drilling fl uid could be easily removed from the reservoir, hence reducing formation damage.

References

Liên doanh Việt - Nga “Vietsovpetro”. Giáo trình dung dịch khoan và sửa giếng. 2009.

Tom Brookey. “Micro-bubbles”: New aphron drillin fluid technique reduces formation damage in Horizontal wells. SPE Formation Damage Control Conference, Lafayette, Louisiana. 18 - 19 February, 1998.

Catalin D.Ivan, Frederick B.Growcock, James E.Friedheim. Chemical and physical characterization of aphron-based drilling fluids. SPE Annual Technical Conference and Exhibition, San Antonio, Texas. 29 September - 2 October, 2002.

Frederick B.Growcock, Arkadiy Belkin, Miranda Fosdick, Maribella Irving, Bob O’Connor, Tom Brookey. Recent advances in aphron drilling-fluid technology. SPE Drilling and Completion. 2007; 22(2): p. 74 - 80.

Frederick B.Growcock, Asif M.Khan, Gerard A.Simon. Application of water-based and oil-based aphrons in drilling fluid. SPE International Symposium on Oilfield Chemistry, Houston, Texas. 5 - 7 February, 2003.

Fred Growcock. Enhanced wellbore stabilization and reservoir productivity with aphron drilling fluid technology.

Published
2016-01-29
How to Cite
Anh, N. T., Minh, T. Q., & Hien, N. T. T. (2016). Preparation of micro-bubble (Aphron) drilling fluid used in low pressure reservoirs. Petrovietnam Journal, 1, 28-39. Retrieved from http://www.pvj.vn/index.php/TCDK/article/view/469
Section
Articles

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