Kontrole geologiczne zmian kanałów podmorskich w dorzeczu Song Hong w Wietnamie

Anh Ngoc Le; Hoa Minh NGUYEN; Muoi Duy NGUYEN; Ngan Bui THI

doi:10.29227/IM-2023-02-07

Anh Ngoc Le Petroleum Geology Department, Faculty of Petroleum and Energy, Hanoi University of Mining and Geology; Basin, stratigraphy and sedimentary process group (BSSP), Hanoi University of Mining and Geology, 18 Vien Street - Duc Thang Ward - Bac Tu Liem District - Ha Noi – Vietnam https://orcid.org/0000-0002-1607-9388
Hoa Minh NGUYEN Petroleum Geology Department, Faculty of Petroleum and Energy, Hanoi University of Mining and Geology; Basin, stratigraphy and sedimentary process group (BSSP), Hanoi University of Mining and Geology, 18 Vien Street - Duc Thang Ward - Bac Tu Liem District - Ha Noi – Vietnam https://orcid.org/0000-0002-6555-662X
Muoi Duy NGUYEN Petroleum Geology Department, Faculty of Petroleum and Energy, Hanoi University of Mining and Geology; Basin, stratigraphy and sedimentary process group (BSSP), Hanoi University of Mining and Geology, 18 Vien Street - Duc Thang Ward - Bac Tu Liem District - Ha Noi – Vietnam https://orcid.org/0009-0005-1964-1048
Ngan Bui THI Petroleum Geology Department, Faculty of Petroleum and Energy, Hanoi University of Mining and Geology; Basin, stratigraphy and sedimentary process group (BSSP), Hanoi University of Mining and Geology, 18 Vien Street - Duc Thang Ward - Bac Tu Liem District - Ha Noi – Vietnam https://orcid.org/0009-0004-6188-3246

DOI: https://doi.org/10.29227/IM-2023-02-07

Keywords: Song Hong basin, submarine channels, channel complex, 3D seismic

Abstract

Song Hong basin is a very large basin with complicated onshore to offshore geological structure. The basin comprises the pre-Tertiary
basement and Kainozoi sequences. This study focused on the evolution of submarine channel in Miocene sequence. The study interval is
the major reservoir of the basin characterized as submarine channel complex and lower to Middle Miocene carbonates with the porosity
of 15–25%. The channel is highly eroded into the substrate with c. 7 km wide and 20 km long, trending northwest-southeast. They are
‘U’ to ‘V’ shape, sub-parallel to deep faults which reactivated in the Early and Mid-Late Miocene. The channel deposit is characterized
by cut and fill architecture and can be seen as high amplitude, bi-directional downlap. The channels are likely to be controlled by the
two inverted phases in Late Oligocene and Middle-Late Miocene. The tectonic events are not only controls the flow directions but also
modified the shape of the channels. The occurrence of well-developed submarine channel give a great hydrocarbon potential for the
Song Hong basin.

Geological Controls on Evolution of Submarine Channels in Song Hong Basin, Offshore Vietnam

Abstract