Effective exploration, discovery and exploitation of oil fields in pre-Tertiary fractured basement reservoirs

  • Ngo Thuong San
DOI: https://doi.org/10.25073/petrovietnam%20journal.v9i0.87
Keywords: Basement rock, granitoid, Tertiary, Bach Ho field

Abstract

Bach Ho is the largest oil field in Vietnam with oil initially in place of over 500 million tons. Field production is highly intensive with the peak of production amounting to over 12 million tons per year from Mesozoic granitoid basement reservoir in the Tertiary sedimentary basin.

Results of oil production from the basement reservoirs of Bach Ho, Rong, and other oil fields reveal the diversity of geological model with the presence of aquifer and the difference in fluid composition and distribution by depth. Oil in the fractured basement reservoir is discovered at the depth range of nearly 2,000m to 4,000m. Crude properties such as density, viscosity, and soluble gas ratio vary from area to area. The complex porosity-permeability distribution increases the risk of new exploration and infill wells.

Currently, besides Vietsovpetro Joint Venture, other oil and gas operators are producing from fractured basement reservoir with low recovery rate. It is, therefore, necessary to exchange experiences with Vietsovpetro in order to increase the production efficiency.

References

1. Anirbid Sircar. Hydrocarbon production from fractured basement formations. Current Science. 2004; 87(2): p. 147 - 151.
2. GeoScience Limited. Hydrocarbon production from fractured basement formations. 2013.
Published
2018-09-30
How to Cite
Ngo Thuong San. (2018). Effective exploration, discovery and exploitation of oil fields in pre-Tertiary fractured basement reservoirs. Petrovietnam Journal, 9, 20-26. https://doi.org/10.25073/petrovietnam journal.v9i0.87
Issue
Vol 9 (2018)
Section
Articles

1. The Author assigns all copyright in and to the article (the Work) to the Petrovietnam Journal, including the right to publish, republish, transmit, sell and distribute the Work in whole or in part in electronic and print editions of the Journal, in all media of expression now known or later developed.

2. By this assignment of copyright to the Petrovietnam Journal, reproduction, posting, transmission, distribution or other use of the Work in whole or in part in any medium by the Author requires a full citation to the Journal, suitable in form and content as follows: title of article, authors’ names, journal title, volume, issue, year, copyright owner as specified in the Journal, DOI number. Links to the final article published on the website of the Journal are encouraged.