Sequence Stratigraphic Approach To Identify New Play and Evaluation of Petroleum System in Blocks 102 & 106, Song Hong Basin, Vietnam

Abstract

Sequence Stratigraphic Approach To Identify New Play and Evaluation of Petroleum System in Blocks 102 & 106, Song Hong Basin, Vietnam Othman Ali Mahmud; Othman Ali Mahmud Petronas Carigali Sdn Bhd Search for other works by this author on: This Site Google Scholar Jaafar Unir Jaafar Unir Petronas Carigali Sdn Bhd Search for other works by this author on: This Site Google Scholar Paper presented at the International Petroleum Technology Conference, Kuala Lumpur, Malaysia, December 2008. Paper Number: IPTC-12167-MS https://doi.org/10.2523/IPTC-12167-MS Published: December 03 2008 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Mahmud, Othman Ali, and Jaafar Unir. "Sequence Stratigraphic Approach To Identify New Play and Evaluation of Petroleum System in Blocks 102 & 106, Song Hong Basin, Vietnam." Paper presented at the International Petroleum Technology Conference, Kuala Lumpur, Malaysia, December 2008. doi: https://doi.org/10.2523/IPTC-12167-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsInternational Petroleum Technology ConferenceIPTC International Petroleum Technology Conference Search Advanced Search AbstractBlocks 102 & 106 are located in the Song Hong Basin, offshore, Northern Vietnam in water depth of 25 to 30 meters (Figure 1). Petronas Carigali Overseas (V) Sdn. Bhd. (PCOSB) is the operator of the blocks with a 50% working interest. To date, PCOSB has acquired about 1054km2 of 3D data and drilled three exploration wells. The first well was drilled in 2004 with minor oil and gas discovery in the Middle Miocene shallow marine sand. The subsequent well was drilled in the middle of 2006, which turned out to be a dry well. The third exploration well was drilled at the end of 2006 and encountered about 70m of net gas sand in the Middle to Late Miocene interval (Figure 2). Based on the two discoveries in Blocks 102 & 106 and significant oil discovery in the onshore well B10-STB-1X drilled by other operator outside the blocks, a working petroleum system is believed to be present in the Song Hong Basin.In order to further explore the hydrocarbon potential in Blocks 102 & 106, a regional study with sequence stratigraphic approach were carried out in 2007.The study utilized the available 2D, 3D and the latest well data in the blocks.Plate tectonic reconstruction and geodynamic evolution shows that the Song Hong basin is a rift basin that formed in the late Eocene/ Oligocene time (Figure 3). The basin formation and evolution is closely related to the strike slip movements of the Red River Fault Zone following the impact of collision between Indian plate and Eurasia plate in the Oligocene time. The basin has undergone a series of extensional and compressional events that provides the main structural framework for hydrocarbon trapping mechanism in the area (Othman & Jaafar, 2006). The relationship between tectonic events and structural formation can be summarized as follows: -Eocene to OligoceneBlock faulting creates horst and graben structures during the rifting phase.Late OligoceneNW-SE opening of South China Sea caused compression or tectonic inversion to some part of the Song Hong Basin.Middle MioceneThe change of displacement direction caused formation of distinct unconformity, which in places shows deep channel incision and possible deposition of basin floor fans to the south of blocks 102 & 106.Late MioceneThe continuous strike slip activity, which culminated in the Late Miocene, caused reversal of faults and the formation of inversion structures. Keywords: structural geology, post drilling well evaluation report, petroleum system, Upstream Oil & Gas, sequence stratigraphic approach, shallow marine sand, identify new play, international petroleum technology conference, block 102, Vietnam Subjects: Reservoir Characterization, Exploration, development, structural geology This content is only available via PDF. 2008. International Petroleum Technology Conference You can access this article if you purchase or spend a download.