A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam

H. Vo Thanh, Y. Sugai, R. Nguele, K. Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Granite fractured basement reservoir contributes higher 40% of the world's oil and gas reserves. However, geological modeling of fractured reservoirs is complex and presents unique challenges in comparison with conventional reservoirs. It is extremely difficult to achieve the best results for a future development plan. This research presented the new workflow to enhance the accuracy of porosity and permeability models for a fractured reservoir in offshore Vietnam by using Artificial Neural Network (ANN) and co-kriging method. ANN was employed to solve problems that conventional modeling has not been successful. The seismic attributes selection was used for initial ANN generation. Then, the prediction property model was established through ANN training process. Well log data was used for correlation to cross-validation the predictive models. Next, the co-kriging algorithm was created the porosity and permeability models. Also, the Drill Stem Test (DST) data was used for history matching models to confirm the Co-kriging approach. The history matching was iterated until the geological model achieved the best matching with DST data. The history match shown the excellent fitting between simulation model and measurement data. Overall, we conclude that ANN and co-kriging are useful method for developing reliable workflow in fracture basement reservoir.

Original languageEnglish
Title of host publication81st EAGE Conference and Exhibition 2019
PublisherEAGE Publishing BV
ISBN (Electronic)9789462822894
Publication statusPublished - Jun 3 2019
Event81st EAGE Conference and Exhibition 2019 - London, United Kingdom
Duration: Jun 3 2019Jun 6 2019

Publication series

Name81st EAGE Conference and Exhibition 2019

Conference

Conference81st EAGE Conference and Exhibition 2019
CountryUnited Kingdom
CityLondon
Period6/3/196/6/19

Fingerprint

Vietnam
granite
basements
kriging
artificial neural network
basin
Neural networks
modeling
histories
stems
permeability
history
Porosity
porosity
stem
Oils
education
oils
Gases
well

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

Cite this

Vo Thanh, H., Sugai, Y., Nguele, R., & Sasaki, K. (2019). A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam. In 81st EAGE Conference and Exhibition 2019 (81st EAGE Conference and Exhibition 2019). EAGE Publishing BV.

A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam. / Vo Thanh, H.; Sugai, Y.; Nguele, R.; Sasaki, K.

81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019. (81st EAGE Conference and Exhibition 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Vo Thanh, H, Sugai, Y, Nguele, R & Sasaki, K 2019, A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam. in 81st EAGE Conference and Exhibition 2019. 81st EAGE Conference and Exhibition 2019, EAGE Publishing BV, 81st EAGE Conference and Exhibition 2019, London, United Kingdom, 6/3/19.
Vo Thanh H, Sugai Y, Nguele R, Sasaki K. A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam. In 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV. 2019. (81st EAGE Conference and Exhibition 2019).
Vo Thanh, H. ; Sugai, Y. ; Nguele, R. ; Sasaki, K. / A new petrophysical modeling workflow for fractured granite basement reservoir in Cuu long basin, offshore Vietnam. 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019. (81st EAGE Conference and Exhibition 2019).
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