Production technology solutions to enhance heavy oil recovery of marginal fields, offshore Vietnam

  • Tran Quoc Viet
  • Vu Viet Hung
  • Nguyen Hai An
Keywords: Heavy oil, enhanced oil recovery, ESP, diesel injection, Dong Do field

Abstract

The finding of heavy oil at Dong Do field of Cuu Long basin is a success in exploration. It could be considered as a large heavy oil field offshore Vietnam. Maximising reserve is a challenge to the operator when they think of a suitable development strategy to efficiently and economically exploit the field. Over the past decades, production technology application in heavy oil production has been widely developed in the industry. Apart from the thermal method, pumping technology makes remarkable advances by enlarging the drawdown created over the conventional gas lift in several heavy oil projects.

This paper presents all the production technology solutions that apply to the marginal heavy oil field offshore Vietnam. One of the major solutions is the electric submersible pump (ESP) and gas-lift (GL) combination method to enhance the wellbore lifting efficiency. In doing so, a series of solutions to improve heavy oil recovery have been conducted from design to pilot test whilst optimising the economic yield over the field life. Among them, the application of ESP and GL combination plays as the key driver to reinforce good production performance.

As a result, the design includes an electrical pump system coupled with GL back-up, all integrated with one to boost production and prolong well life. Beside that, closely monitoring and optimising is one factor to give the pump a longer life.

References

Abha Dwivedy, “Steam generation by solar and natural gas generators for thermal enhanced oil recovery”,Master Science Thesis, West Virginia University, USA.

Dennis Beliveau, “Waterflooding viscous oil reservoirs”, SPE Reservoir Evaluation & Engineering, Vol. 12, No. 5, pp. 689 - 701, 2009. DOI: 10.2118/113132-PA.

S.T. Tran, H.V. Vu, V.M. Le, T.N. Nguyen, L.H. Nguyen, P. Prajunla, and H.M.H. Dong, “Hybrid system of ESP and gas lift application from conceptual design, pilot test to system analysis”, SPE Middle East Artificial Lift Conference and Exhibition held in Manama, Kingdom of Bahrain, 30 November - 1 December, 2016. DOI: 10.2118/184215-MS.

Vu Viet Hung and Tran Thai Son, “Production technology designed for heavy oil recovery of a marginal field offshore Vietnam”, Science and Technology Development Journal, Vol. 19, No.1, pp. 190 - 202, 2016. DOI: 10.32508/stdj.v19i1.516.

Lê Minh Vũ, Nguyễn Đức Đông, Cao Hữu Bình và Vũ Việt Hưng, “Duy trì khai thác dầu cho giếng có hàm lượng nước cao sau quá trình đóng giếng bằng phương pháp bơm diesel”, Tạp chí Dầu khí, Số 1, trang 20 - 29, 2020.

Diesel injection solution applied to Dong Do heavy oil reservoir.
Published
2020-10-30
How to Cite
Quoc Viet, T., Viet Hung, V., & Hai An, N. (2020). Production technology solutions to enhance heavy oil recovery of marginal fields, offshore Vietnam . Petrovietnam Journal, 10, 41 - 48. https://doi.org/10.47800/PVJ.2020.10-04
Section
Articles