Lateral migration pathways of petroleum in the Zhu III subbasin, Pearl River Mouth basin, South China Sea

Fengjun, Nie; Li, Sitian; Wang, Hua; Xie, Xinong; Keqiang, Wu; Meizhu, Jiang

doi:10.1016/s0264-8172(01)00013-7

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…There is no evidence of systematic gradual migration of the extension over time from the proximal to the most distal basins on either of the two rifted margins. Even in the most proximal basins, landward of our seismic transect (gray‐shaded box in Figure 1), detailed stratigraphic works of the oil industry also interpreted the end of the main extensional phase at ~23 Ma (Fengjun et al, 2001).…”

Section: Discussionmentioning

confidence: 79%

“…About 1,150 km of MCS field data have been reprocessed up to poststack time migration:~770 km from profile SO49-23 ( Figure 3) and~380 km from BGR84-127 and BGR84-128 seismic profiles (upper and Barckhausen & Roeser, 2004;Briais et al, 1993;Dieter Franke et al, 2014;Ding et al, 2015;Fengjun et al, 2001;Lei & Ren, 2016;J.-B. Li et al, 2011;Morley, 2016;N.…”

Section: Data Set and Methodologymentioning

confidence: 99%

“…(a) Tectonic stages and rift evolution of the CSB (after Aurelio et al, 2014; U. Barckhausen & Roeser, 2004; Briais et al, 1993; Dieter Franke et al, 2014; Ding et al, 2015; Fengjun et al, 2001; D. Franke et al, 2011; Lei & Ren, 2016; C.‐F. Li et al, 2014; J.‐B.…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The~1,100-km-long seismic transect acquired parallel to the direction of extension of the central SCS rift system (Figure 1) reveals the top of the basement, fault blocks, syn-rift strata, and clear Moho reflections across most of the line, allowing estimation of lateral variations in crustal thickness. The tectonic structure and crustal architecture provide information Wei et al (2012Wei et al ( , 2016; (i) Zhang et al (2016); (2) 2D and 3D MCS data: Ding et al (2015); Lei and Ren (2016); Qiu et al (2013); Steuer et al (2013); (3) magnetic anomalies from Barckhausen and Roeser (2004) and Barckhausen et al (2014); (4) boreholes used for stratigraphic calibration: In the northern margin, boreholes CC4-1-1 and CC1162 (Lei & Ren, 2016) projected in Figures 3 and 5; in the southern margin, boreholes Sampaguita-1 and Aboabo A-1x (Steuer et al, 2013) projected in Figure 4; (5) location of boreholes in the Paracel Islands used to time constraints (Yubo et al, 2011), see the text; (6) high thin-crust regions reported by Huang et al (2005), Pang et al (2018), Wang et al (2018), Zhao et al (2015), and Zhou et al (2018); (7) study area in the Depression where detailed stratigraphic works constrained by~30 boreholes (black dots) interpreted the end of the main extensional phase at~23 Ma (Fengjun et al, 2001); (8) direction of opening of the CSB (Briais et al, 1993; Udo Barckhausen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

2020

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Rifted margins result from continental lithosphere extension, breakup, and transition to seafloor spreading by modes typically described by end-member conceptual models. However, current geophysical data challenge these archetypes showing a more complex spectrum of rifting styles. Here, we integrate geophysical and geological observations to constrain the time and space evolution of the central South China Sea (SCS) rift system. We provide new insights into the continental extension mechanisms and continent-ocean transition (COT) formation from a seismic transect parallel to the extensional direction of the central SCS rift system. We present 850-km-wide region of continental crust where distributed extensional deformation formed a pattern of lithospheric boudinage defined by seven 100-to 200-km-long structural segments. Each segment is formed by an 18-to 24-km-thick crust sector laterally thinning into an interboudin neck with ≤10-km ultrathin crust (ß factors~3.3-6.5). Drill and stratigraphic information support that extension continued at all six interboudin necks in the central SCS until~23 Ma, when breakup by seafloor spreading propagation reached one of them. We propose that the seven segments evolved as discrete subsystems from early rifting to breakup. Structurally equivalent ultrathin crust grabens occur NE and SW of both SCS conjugate margins, supporting a 3D wide rift mode of deformation across the SCS rift system. The six ultrathin crust contemporaneous necks and the abrupt nature and location of the COT support that the breakup was not controlled by further continental lithospheric thinning but rather was determined by the seafloor spreading propagation toward the SW.

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Section: Discussionmentioning

confidence: 79%

Section: Data Set and Methodologymentioning

confidence: 99%

Section: Geological Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

2020

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“…In another work by Cao et al (2005), lateral fluid migration along an unconformity surface was confirmed through their study of the Permian petroleum system in the northwest margin of the Junggar Basin. Fengjun et al (2001) studied lateral migration pathways of hydrocarbons in the Pearl River Mouth Basin, South China Sea.…”

Section: Introductionmentioning

confidence: 99%

Investigation of CO ₂ storage in a saline formation with an angular unconformity at the caprock interface

Shariatipour

Pickup

Mackay

2016

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Incised valley filling deposits: an important pathway system for long-distance hydrocarbon migration—a case study of the Fulaerji Oilfield in the Songliao Basin

Ren-chen

Liu

2009

Pet. Sci.

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In this paper, incised valley filling deposits, which formed an important pathway system for long-distance hydrocarbon migration, are discussed in detail based on core and logging data. The sequence SQ y23 of the Cretaceous Yaojia Formation is the main hydrocarbon-bearing layer in the Fulaerji Oilfield. The hydrocarbon source of the oilfield is the Qijia-Gulong Sag which is about 80 km away from the Fulaerji Oilfi eld. The transport layer of long-distance hydrocarbon migration is the overlapped sandstone complex which fi lls the incised valley. The incised valley developed during the depositional period from the late Qingshankou Formation to the early Yaojia Formation of Cretaceous (SQ qn4 -SQ y1 ) was about 70 km long and 20 km wide, and extended in the NW-SE direction. The overlapped filling of the incised valley mainly occurred in the expanding system tract of the third-order sequence SQ y23 (EST y23 ). Towards the basin, incised valley fi lling deposits overlapped on the delta developed in the early period, and towards the basin margin, incised valley fi lling deposits were covered by the shore-shallow lacustrine sandy beach bar developed in the maximum fl ooding period. All of the delta, the incised valley fi lling and the shore-shallow sandy beach bar are sandstone-rich, and have high porosity and permeability, and can form an effective hydrocarbon migration and accumulation system. Deltaic sand bodies collected and pumped hydrocarbon from the active source, incised valley filling depositional system completed the long-distance hydrocarbon migration, and lithological traps of shore-shallow lacustrine sandy beach bar accumulated hydrocarbon. The incised valley fi lling sequences are multi-cycle: an integrated shortterm filling cycle was developed on the erosion surface, and the sequences upward were mud-gravel stone, medium-fi ne sandstone containing terrigenous gravels and muddy pebbles with cross bedding, silty mudstone with ripple bedding, and mudstone. The incised valley fi lling deposits are characterized by a strong heterogeneity and the main hydrocarbon migration pathway is the medium-fi ne sandstone interval.

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Lateral migration pathways of petroleum in the Zhu III subbasin, Pearl River Mouth basin, South China Sea

Cited by 16 publications

References 14 publications

Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

Investigation of CO ₂ storage in a saline formation with an angular unconformity at the caprock interface

Incised valley filling deposits: an important pathway system for long-distance hydrocarbon migration—a case study of the Fulaerji Oilfield in the Songliao Basin

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Lateral migration pathways of petroleum in the Zhu III subbasin, Pearl River Mouth basin, South China Sea

Cited by 16 publications

References 14 publications

Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

Understanding the 3D Formation of a Wide Rift: The Central South China Sea Rift System

Investigation of CO 2 storage in a saline formation with an angular unconformity at the caprock interface

Incised valley filling deposits: an important pathway system for long-distance hydrocarbon migration—a case study of the Fulaerji Oilfield in the Songliao Basin

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Investigation of CO ₂ storage in a saline formation with an angular unconformity at the caprock interface