Multi-layer facies distribution of Sihapas group in the Central region of Central Sumatra Basin.

Autor: Herdiansyah, Firman, Prakoso, Suryo, Arianto, Alfian, Badril, Areza
Předmět:
Zdroj: AIP Conference Proceedings; 2023, Vol. 2598 Issue 1, p1-10, 10p
Abstrakt: The study area is situated in the central region of the Central Sumatra Basin, approximately 60 km Northwestern Pekanbaru. Since the 1970s, the Central Sumatra Basin is one of the largest hydrocarbon producers. The Sihapas Group has been a multi-layer productive reservoir in this area, especially in Bangko and Bekasap Formation. These formations are composed of up to 500 ft sediment thickness then superimposed by Telisa and Petani Formation. The previous study has been recognized that the Sihapas Group was deposited during the transgressive phase, Early Miocene - Middle Miocene in age. This transgressive phase has provided a thickening-up succession of shale. Specifically, in this area, the Sihapas Group (Bangko and Bekasap Formation) were deposited in the estuarine tidal system. Based on 3 wells core description and bricket biostratigraphy, Channel, bar, and tidal flat facies are significantly developed. The vertical facies distribution is identified by core description within well and by electrofacies in the un-core interval. The spatial facies distribution was determined using a pie-chart discrete log from almost entirely wells and sweetness seismic attribute. They have appropriate to the regional paleogeography of Sihapas Group from northeast to southwest. This research purpose is to identify the facies spatial distribution of each reservoir zone in the Sihapas Group. Subsequently, this study will be very useful for guide the properties lateral distribution. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index