Origin and distribution of natural gas and oil in the Baiyun Depression, Pearl River Mouth Basin, South China Sea

Petroleum Migration Characteristics in the Northeastern Part of the Baiyun Depression, Pearl River Mouth Basin, South China Sea

“…Therefore, the N 1 z 2 sandstones can serve as carrier beds and reservoirs in the study area. This finding is confirmed by the hydrocarbon exploration results in the Baiyun Depression, which suggest that more than 90% of the discovered petroleum reserves occur in reservoirs in N 1 z 2 sandstones (Mi et al, 2018;Wang C et al, 2018).…”

“…In the Baiyun Depression, most of the petroleum reserves are in N 1 z 2 sandstones, which account for nearly 90% of the entire reserves (Mi et al, 2018;Wang C et al, 2018). In the study area, the major part of the petroleum is also located in the N 1 z 2 sandstones.…”

“…Based on the seismic 56 Pr/Ph = Pristine/Phytane; OL/C30H = Oleanane/C30hopane; C27, C28 and C29 are the proportion of C27, C28, and C29 sterane ααα-20R, respectively. Some of the parameters used here have been published in Wang C et al (2018).…”

“…1) (Zhang et al, 2014a, b;Yang et al, 2018). In the past few decades, some giant gas reservoirs have been discovered in the Baiyun Depression, and these gases can be correlated with Enping Formation source rocks (Zhu et al, 2009(Zhu et al, , 2010Wang C et al, 2018). Because the Enping Formation is the main source rock strata in the Baiyun Depression and consists of swamp to shallow lake source rocks, the deep-water area of the PRMB is considered to have great gas exploration potential (Zhu et al, 2009).…”

Source‐sink System and Sedimentary Model of Progradational Fan Delta Controlled by Restricted Ancient Gully: An Example in the Enping Formation in the Southern Baiyun Sag, Pearl River Mouth Basin, Northern South China Sea

“…According to the structure and sediment filling history of the Pearl River Mouth Basin, the Baiyun Sag has undergone three stages of tectonic evolution: a rifting period (Late Cretaceous-Early Oligocene), a thermal subsidence period (Late Oligocene-Early Miocene), and a neotectonic period (Late Miocene-Quaternary) (Shi et al, 2005;Hou et al, 2008;Chen, 2014;Sun et al, 2014;Zhou et al, 2015b;Kong et al, 2018;Pang et al, 2018;Tian et al, 2018;Wang et al, 2018;Yang et al, 2018;Zhao et al, 2018). During the rifting period, the Baiyun Sag was controlled by faults and showed stepped subsidence.…”