New method for the reconstruction of sedimentary systems including lithofacies, environments, and flow paths: A case study of the Xisha Trough Basin, South China Sea

Xu, Guoce; Zhang, Li; Pang, Xiong; Chen, Mei; Liu, Baojun; Zuo, Yinhui; Luo, Suaibing; Hu, Lian; Chen, Hui; Liu, Xiaogang; Wang, Xiaoxue; Wu, Changrong; Han, Jianfa; Wu, S. Y.; Song, Guoqi; Yan, Yue; Wang, Jian; Chen, Jingtan; Li, Kai; Hua, Ceixia; Jian, He; Wei, Xian; Hong, Caijun; Wang, Yeyong; Guo, Wang; Wang, Lei; Chen, Gang; Han, Ping; Luo, Wei; Yuan, Ciming; Li, Yuanhao

doi:10.1016/j.marpetgeo.2021.105268

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…The classification of seismic facies was conducted based on the seismic reflection of the amplitude, frequency, external form, internal configuration, continuity, smoothness, and sandstone content. Despite being the oldest analytical method, the comprehensive analysis of drilling cuttings, well log signatures, and seismic facies remains the most valuable tool to identify sedimentary facies [62][63][64]. Combining the seismic attributes with the distribution of seismic facies allowed us to extend the sedimentary facies study to the entire block based on sedimentology and seismic sedimentology.…”

Section: Methodsmentioning

confidence: 99%

“…The trends of the sandstone petrologic maturity indicate that the sediments in the eastern, central, and northeastern parts of the sag originated in the Taizhou Uplift and were transported from the Taizhou Uplift to those regions, whereas the sediments in other regions originated in the Wubao Low Uplift. As an important indicator of the paleo-current direction, progradational seismic reflections provide evidence from which the sediment transport direction, sediment transport pathways, provenance locations, sedimentary geometry, spatial distribution of sedimentary facies, and reverse inference of the details of sedimentary evolution can be determined, which is particularly useful when there is a poor availability or lack of cores [64,65]. The structure and distribution of seismic reflections are dominantly controlled by 2 and other sandstone petrologic maturity values.…”

Section: Sediment Transport Directions Based On Sandstone Petrologic ...mentioning

confidence: 99%

“…As an important indicator of the paleo-current direction, progradational seismic reflections provide evidence from which the sediment transport direction, sediment transport pathways, provenance locations, sedimentary geometry, spatial distribution of sedimentary facies, and reverse inference of the details of sedimentary evolution can be determined, which is particularly useful when there is a poor availability or lack of cores [64,65]. The structure and distribution of seismic reflections are dominantly controlled by the direction of sediment transport and hydrodynamic forces during sediment deposition and are less affected by diagenesis or sampling strategy.…”

Section: Sediment Transport Directions Based On Seismic Progradationa...mentioning

confidence: 99%

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A Multi-Faceted Approach to Determining the Provenance of the Lacustrine Rift Basin in the Initial Rifting Stage: A Case Study of the Paleocene Qintong Sag, Subei Basin, East China

Jiang,

Liu,

Xia

et al. 2024

Minerals

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Research on the provenance of sedimentary systems is key to better understanding the sedimentary framework and improving exploration-associated decision-making and deployment. With regard to the provenance of sedimentary systems, there is still poor understanding in the initial rifting stage due to imbalanced and insufficient exploration and a common lack of seismic data, which have seriously hindered oil exploration in the Qintong Sag, Subei Basin. This study aimed at investigating the provenance in the direction of the fault-terrace zone in the southeast part of the Qintong Sag and aimed to examine whether large-scale sedimentary systems are formed by these sediment sources. Integrated analysis of heavy minerals, sandstone petrologic maturity, drilling cutting dates, 3D seismic data, and well logs was employed to identify the provenance. This study is the first time that large-scale provenance from the direction of the fault-terrace zone has been discovered in the third member of the Paleocene Funing Formation (referred to as the third Mbr of the Funing Fm in this paper) in the Subei Basin, east China. The documentation shows that sediments from the northwest Wubao Low Uplift and the southeast Taizhou Uplift can be distinguished in the Qintong Sag, with the large-scale delta system in the central and eastern part of the Qintong Sag comprising sediments from the Taizhou Uplift, improving upon previous understanding of the sedimentary framework. The deposition formed by the Taizhou Uplift provenance system was characterized by gradual weakening of the hydrodynamic forces, a decreasing sediment supply, and shrinking of the retrogradational delta depositional systems with good reservoir qualities, which are characterized by high-quality source–reservoir–cap combinations and are likely to develop into a hydrocarbon-rich belt. The discovery of the Taizhou Uplift provenance proves that there may be major provenance and large-scale sedimentary systems from the fault-terrace zone of the rift basins in the initial rifting stage. The experience of rapid retrogradation showed that these large-scale delta systems are likely to only flourish in the initial rifting stage. This study is helpful for improving the understanding of sediment provenance and the sedimentary framework of lacustrine rift basins in the initial rifting stage.

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Section: Methodsmentioning

confidence: 99%

Section: Sediment Transport Directions Based On Sandstone Petrologic ...mentioning

confidence: 99%

Section: Sediment Transport Directions Based On Seismic Progradationa...mentioning

confidence: 99%

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A Multi-Faceted Approach to Determining the Provenance of the Lacustrine Rift Basin in the Initial Rifting Stage: A Case Study of the Paleocene Qintong Sag, Subei Basin, East China

Jiang,

Liu,

Xia

et al. 2024

Minerals

View full text Add to dashboard Cite

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“…However, the analysis results of sedimentology primarily obtained via visual observation present uncertainty and non-uniqueness. Geophysicists prefer to focus on seismic data processing, such as phase shifting, the stacking of multiple attributes and the auto-classification of seismic facies [10,[23][24][25][26][27][28][29]. Many seismic parameters including amplitude, frequency, interval velocity and waveform have been extracted or recalculated to reflect the characteristics and distributions of sedimentary bodies [10,24,28,[30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

A Method for Defining Sedimentary Characteristics and Distributions and Its Application in Qinnan Depression, Bohai Bay Basin

Zhang,

Xu,

Wang

et al. 2023

Processes

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A new method incorporating geophysical analysis and geological analysis is proposed to define the sedimentary characteristics and distributions in basins with few drilling wells to promote the exploration of reservoirs. This method is applied to a study, through which its principles, closed-loop workflow and technologies are introduced in detail and the sedimentary characteristics and distributions of the study area are accurately defined. During the application process of the method, a compatible geological model is established, based on which the seismic data are interpreted and the results derived from the interpretation are further verified via seismic forward modeling. The study results exhibit a successive sand-rich deposition from the retrogradational gully-filling gravity flow deposition including near-shore fans, slope fans and basin-floor fans delimited by different slope break belts in transgressive sequences to the progradational delta deposition in a retrogressive sequence including braided river deltas with a long extension distance and fan deltas developed along a steep slope belt. And the potential reservoirs are located at the point-out sites of sand bodies with lower average P-wave velocities than those of muddy sediments. The proposition and application of this method are of great significance for oil and gas exploration.

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“…The PSD distribution characteristics of soil and its spatial variation (grain size trend) are mainly controlled by multiple factors such as source components, transport mode, transport distance, hydrodynamic conditions, and topography 24 – 26 . Sediment composition and grain size characteristics have obvious advantages in the study of sedimentary environment zoning in offshore, estuary, and delta areas 27 – 29 .…”

Section: Introductionmentioning

confidence: 99%

Identification of soil particle size distribution in different sedimentary environments at river basin scale by fractal dimension

Wang

Zhan

et al. 2022

Sci Rep

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The geomorphology of river basin is complex, and its soil sedimentary characteristics are poorly defined. To study the spatial variability of soil structure in different sedimentary environments at the basin scale, 356 sets of soil samples were collected from five typical sedimentary environments in the Yellow River Basin and the Haihe River Basin, including the upper and lower reaches of the rivers, mountain-front plains, central alluvial plains and eastern coastal plains. The particle size distribution (PSD) of the soil samples was obtained using a laser particle size analyzer, and the fractal dimension (D) of the soil structure was derived by applying fractal theory. The PSD, D and the correlation between them were analyzed by the Pearson correlation method for typical sedimentary environments in two basins. The results show that: (1) The main soil types in the typical geological environments in the basin are sand, loamy sand, sandy loam, silty loam, and silty soil. The soil particle size in the upper and lower reaches of the rivers was higher than that in the plain areas. (2) In the plane, The D value descended in different regions in the following order: the mountain-front plain > the eastern coastal plain > the upper Yellow River > the central alluvial plain > the lower Yellow River. In the vertical direction for both rivers, the D value showed a decreasing trend with increasing burial depth. (3) The model results showed a cubic polynomial correlation between D values and PSD, which was closely related to the non-uniformity of particle size during sorting and deposition. The soil PSD and fractal characteristics are effective tools for the quantitative evaluation of soil structure in various sedimentary environments in the basin.

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New method for the reconstruction of sedimentary systems including lithofacies, environments, and flow paths: A case study of the Xisha Trough Basin, South China Sea

Cited by 9 publications

References 25 publications

A Multi-Faceted Approach to Determining the Provenance of the Lacustrine Rift Basin in the Initial Rifting Stage: A Case Study of the Paleocene Qintong Sag, Subei Basin, East China

A Multi-Faceted Approach to Determining the Provenance of the Lacustrine Rift Basin in the Initial Rifting Stage: A Case Study of the Paleocene Qintong Sag, Subei Basin, East China

A Method for Defining Sedimentary Characteristics and Distributions and Its Application in Qinnan Depression, Bohai Bay Basin

Identification of soil particle size distribution in different sedimentary environments at river basin scale by fractal dimension

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