Si Chen

Si Chen
China University of Geosciences, Wuhan, China · Faculty of Earth Resources

Doctor of Philosophy

About

70
Publications
27,345
Reads
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666
Citations
Additional affiliations
May 2017 - May 2022
China University of Geosciences, Wuhan, China
Position
  • Professor
June 2014 - present
University of Texas at Austin
Position
  • PostDoc Position
January 2012 - December 2013
University of Texas at Austin
Position
  • Visiting student

Publications

Publications (70)
Article
Full-text available
Exceptionally high shelf-subsidence rates (0.8–6.0+ mm/yr), a marked basinward stepping (to east and northeast) of the paleo-Orinoco shelf prism and post-Pliocene uplift of Trinidad all allow the sedimentary facies, process regime and the evolution of the Late Miocene Orinoco Delta to be evaluated from extensive outcrops along the southwest, and so...
Chapter
Full-text available
Abstract: A series of Late Pliocene, tidally-influenced channels associated with both palaeo-Orinoco delta lobes and estuaries are documented in outcrops along the Trinidad coast. The Morne L’Enfer phase (ca. 3.6 Ma) of palaeo-Orinoco stratigraphy has been chosen because its regressive delta lobes, and the associated transgressive estuaries, were s...
Article
Full-text available
Trinidad is an uplifted segment of the Neogene Orinoco shelf, created largely by the paleo-Orinoco River and Delta. The Atlantic-facing shelf-margin sediment prism has an internal clinoform architecture, with both sandy marine and nonmarine topsets and muddy deepwater slope deposits that contain turbidite channels and collapsed shelf-edge blocks. T...
Article
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The first sedimentological characterization and correlation of onshore outcrop and offshore subsurface data (southern Columbus Basin) are presented for the paleo-Orinoco (Upper Miocene-Pliocene) shelf-margin prism, Trinidad Island, Trinidad and Tobago. The paleo-Orinoco River delta system and associated continental slope, which generated the 10-km-...
Article
The South China Sea continental margin in the Qiongdongnan Basin (QDNB) area has incrementally prograded since 10.5 Ma generating a margin sediment prism more than 4km‐thick and 150–200 km wide above the well‐dated T40 stratigraphic surface. Core and well‐log data, as well as clinoform morphology and growth patterns along twenty‐eight 2D seismic re...
Article
Full-text available
The production of shale gas varies greatly in different regions due to the way gas has accumulated and preserved. This work investigates the dynamic evolution of shale gas generation, accumulation, adjustment, and loss from the Longmaxi formation (S 1 l) in the Changning area, southern Sichuan Basin, China. The factors controlling the preservation...
Article
Investigating the occurrence characteristics of water molecules in shale is of great resource, economic, and environmental significance. In this work, the adsorption behavior of water vapor on Longmaxi shale samples is tested, and several isothermal adsorption models are employed to fit the experimental data and primary and secondary adsorption pro...
Article
Isothermal adsorption experiments of water vapor in shale samples with differing TOC (total organic carbon content) and differing clay content were conducted at three set temperatures to reveal the adsorption mechanism , and to determine the thermodynamic dependence of primary and secondary adsorption processes on the content of organic matter and...
Article
The Neogene Orinoco Delta is one of the typical river deltas where both the records of modern and ancient tidal processes can be studied. A ∼5 m.y./>10-km-thick succession on the island of Trinidad contains remnants of paleo-Orinoco deltaic deposition preserving both tide- and wave-influenced delta lobes within the same time intervals, just like th...
Article
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Together, the Yinggehai and Qiongdongnan basins have received a large amount of terrigenous sediments, but the provenance evolution of Cenozoic sediments in the two basins remains disputable. Combined with previous studies in the Yinggehai and Qiongdongnan basins, the elemental geochemistry of Oligocene to Pliocene sediment samples in the junction...
Article
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This study illustrates the clay mineralogy and sedimentary geochemistry of the Red River and its major tributaries and distributaries in northern Vietnam and shows how these methods can be used to unravel grain size, provenance, hydraulic-sorting, and chemical weathering effects. All sand samples are SiO2-rich and consequently depleted in most chem...
Article
The Qikou Sag is a petroliferous tectonic unit within the Bohai Bay Basin, northeast China. The depositional system evolved temporally, spatially, and episodically in five rifting stages (stages 1–5) during the Paleogene and Neogene, with sedimentation responding to regional subsidence. This study focuses on the tectono-sedimentary evolution throug...
Article
Full-text available
Investigating the deposition evolution and stratal stacking patterns in continental rift basins is critical not only to better understand the mechanism of basin fills but also to reveal the enrichment regularity of hydrocarbon reservoirs. The Pearl River Mouth Basin (PRMB) is a petroliferous continental rift basin located in the northern continenta...
Article
Full-text available
The reservoir quality of sandstones is significantly impacted and transformed by sedimentation and diagenesis. It is necessary to clarify the internal relationship among them to precisely predict the sweet reservoir. In this study, five types of sedimentary microfacies are recognized through core observation and logging data: submerged distributary...
Article
Full-text available
The Pinghu Formation consists primarily of marine-continental transitional deposits. The widely distributed fluvial and tidal transgressive sand bodies comprise the main reservoirs of the Baochu slope zone in the Xihu Sag in the East China Sea Shelf Basin. These sand bodies are deeply buried, laterally discontinuous, and are frequently interrupted...
Article
Full-text available
CO 2 is the main greenhouse gas in Earth's atmosphere, and has been causing global warming since the industrial revolution. Therefore, technologies to mitigate carbon emissions have attracted extensive research. Shale gas reservoirs could serve as potential sequestration space for CO 2. This paper aims to gain insight in the CO 2 adsorption behavio...
Article
Investigating the provenance evolution of sedimentary basins with complex tectonic histories is challenging because of the continuously evolving tectonic framework and changing source areas. Pearl River Mouth Basin (PRMB) in the northern South China Sea preserves a large volume of Cenozoic sediments derived from both intrabasinal and extrabasinal s...
Article
Full-text available
Several research works have demonstrated that climate variations are consistent with quasi-periodic orbital parameters, particularly ∼1.2-Myr obliquity amplitude modulation cycle has been demonstrated as a controlling factor of glacio-eustasy sequence formation in icehouse periods. In the current research, we have studied the glacio-eustasy third-o...
Article
Full-text available
Superimposed accumulation mechanism and model of vertical source rock–reservoir system of coal-measure gas is crucial to evaluate the exploration potential, and also the basis of co-exploration and co-production of coal measure gas. This work investigates the formation mechanism of various types of reservoirs (coalbed methane, shale gas, tight sand...
Article
Full-text available
Beach-bar reservoirs have been promising hydrocarbon-bearing exploration advances in the Beibuwan Basin, especially in the WZ12-2 area within the Weixinan sag. The sedimentary characteristics, distribution and formation mechanisms of beach-bar sand bodies in Mbr2 (Member 2) of the Paleogene Liushagang Fm. in the WZ12-2 area within the Weixinan sag...
Article
CO2 injection into shale gas reservoirs is deemed as a potential scheme to enhance CH4 recovery and achieve the ambition of carbon neutral. The insufficient research of binary gas competitive adsorption behavior at in-situ conditions of shale gas reservoirs, and the coupling control of gas components, shale properties, and pore structure on CO2 ads...
Article
Prominent outcrops of the Pliocene Orinoco Delta along the southeast coast of Trinidad Island display a well-known, very thick Icehouse succession of storm-wave dominated delta lobes, as part of a 10–12 km thick Neogene continental-margin prism. There is a previously discovered, steep incision or conduit (400 m wide) with south and north-bounding e...
Article
Sublacustrine fans developed in structurally active settings are commonly characterized by complicated depositional characteristics, which create great challenges to hydrocarbon exploration. To advance understanding their sedimentary architecture and depositional processes, a large-scale sublacustrine fan system in the Eocene Weixinan Depression, n...
Article
The Junggar Basin is one of the very large, long-lived, Late Paleozoic lacustrine basins of China, developed by the closure of the early Paleozoic Junggar Ocean. The novelty of the reported research is outcrop measurements through the mid-Permian Jingzingzigou and Lucaogou formations, allowing reconstruction of interacting very coarse and very fine...
Article
Lake‐delta deposits in low‐accommodation conditions are only a few metres thick and in some cases non‐existent. Fluvial channels occur in many cases directly on top of fine‐grained lacustrine deposits with delta deposits apparently missing. The geomorphology and stratigraphy of modern deltas in Lake Eyre, Australia, and Lake Chad in Africa indicate...
Article
Icehouse continental-shelf-margin accretion is typically driven by high-sediment-supply deltas and repeated glacio-eustatic, climate-driven sea-level changes on a ca. 100 ky time scale. The paleo–Orinoco margin is no exception to this, as the paleo–Orinoco River Delta with its high sediment load prograded across Venezuela, then into the Southern an...
Article
Gravity flows have been well investigated in deep-marine settings but less so in deep-lacustrine environments. To further understand the sedimentary characteristics and processes of gravity flows in a lacustrine rift basin, sublacustrine fans in the Weixi'nan Depression in the South China Sea were identified and studied by integrating core, well lo...
Article
Abstract Continuous Paleozoic-Mesozoic sediment records within Junggar Basin, northwestern China, provides details on the tectonic evolution of the surrounding Tianshan, Bogda, and Kelameili orogenic belts. We compiled 5250 zircon U-Pb ages from 58 samples and integrated with published paleo-current directions, paleo-geography, and subsurface well...
Article
The siliciclastic topset of a continental margin, or a shelf‐margin prism in subsiding nonplate‐margin deepwater basins, is the flat‐lying upper part of the margin succession; it is coeval basinwards with deepwater slope clinoforms. Topsets develop by the aggradation of repeated, cross‐shelf, shoreline regressions and transgressions, thereby hostin...
Article
The Nanpu Sag (NPS), located in northwestern Bohai Bay Basin (BBB), East China, has significant oil discoveries in recent years. The effect of intense faulting and downwraping which generated the intense subsidence of NPS in the Dongying Formation (Fm.) (Ed) (28.5–23.8 Ma) of the Late Oligocene is presented in this paper. We analyzed the geochemica...
Article
Full-text available
Studies on basin fills have provided significant insights into reservoir distribution and prediction in petroliferous basins, however, the effect of basin fills on source rock properties has been underexplored. This paper documents basin filling characteristics and their implications for depositional processes and heterogeneity of source rock in th...
Article
Full-text available
Continental gravity flow deposition is a research hotspot in the field of oil and gas exploration.The large scale gravity flow deposits (up to 1 700 km²) that developed in the Member 1 of Shahejie Formation (Paleogene) in the Binhai slope area in the Qikou Sag shows the sedimentary characters of multiple sediment sources, long distance and multi-fa...
Article
Full-text available
The Cenozoic India–Eurasia collision is evidently recorded in the Qaidam Basin, which is located in the north margin of the Tibetan Plateau. The present study describes a dextrorotary phenomenon at the end of the Eocene in Lenghu Area in the northern Qaidam Basin, discovered in sedimentary and tectonic records. This phenomenon is interpreted to hav...
Poster
Full-text available
CHEN, S., STEEL, R., OLARIU, C., & LI, S. (2018). Growth of the paleo-Orinoco shelf-margin prism: Process regimes, delta evolution, and sediment budget beyond the shelf edge. Bulletin of the Geological Society of America, 130(1–2), 35–63.
Article
Development of fan deltas alongside intrabasinal structural highs has been overlooked compared to those forming on basin margins. However, these fan deltas may provide important clues regarding the tectonic and climatic controls on deposition during rift development. This paper documents fan delta deposition alongside an intrabasinal structural hig...
Article
Full-text available
The conception of special geologic bodies has been applied in this study to define and illustrate economic oil and gas reservoirs in sandbodies, which is helpful for hydrocarbon forecast and exploration. Using the comprehensive analysis of drilling, logging, seismic, seismic attribute extraction, and logging constrained inversion in 3D data volume,...
Article
Full-text available
Large efficient reservoir-shallow marine gravity flow deposits of the Huangliu Formation in Yinggehai Basin, south China, which are located at the central Dongfang area, represent the peculiarity in sedimentary features and deposit mechanism. The paleontology study of these gravity flow deposits indicates that the paleo-water depth was 40-110 m, wh...
Article
Full-text available
Multivariate geological interactions cause distinctive sequence stratigraphic patterns in various tectonic positions. Syndepositional faulting and slope break belts play important roles in controlling the development and dispersion of depositional systems. According to the genesis of marginal fault, section pattern, and plane combination, three typ...
Article
Full-text available
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag. Structure reactivity during post-depositional processes could cause stratigraphic variations in longitudinal time and lateral space...
Article
Full-text available
The sediments of the Liushagang Formation in the Fushan Sag (Paleogene of the South China Sea) are preserved in a variety of structural settings and are described in a sequence stratigraphic framework. This paper presents the control of the sedimentary infill by the tectonic evolution of the Fushan Sag based on the integration of available cores da...
Article
Full-text available
LThe sediments of the Liushagang Formation in the Fushan Sag (Paleogene of the South China Sea) are preserved in a variety of structural settings and are described in a sequence stratigraphic framework. This paper presents the control of the sedimentary infill by the tectonic evolution of the Fushan Sag based on the integration of available cores d...
Article
Full-text available
Yinger ((sic)) sag is the main petroleum generative sag in eastern Jiuquan ((sic)) Basin, and only the Changshaling ((sic)) oil resource has been found after 60 years prospecting. Changshaling anticline crest zone was formed above the regional uplift, and was slightly affected by over thrust during Tertiary Period. The anticline crest was identifie...
Article
Full-text available
The sequence stratigraphy framework of Paleogene of Qikou Sag has been built in this paper. The evolution law of episodic subsidence in Qikou Sag has been expounded, with the analysis of the characteristic of sequence thickness, as well as the study of consedimental tectonic activity, subsidence history, paleogeomorphology and the coupling relation...
Article
Full-text available
The division and analysis of the genetic types of slope breaks will be helpful in studying the enrichment regularity of hydrocarbon reservoirs because the enrichment of hydrocarbon reservoirs is closely related to the shelf-slope break types in continental lake basins or sags in China. This paper analyses the types of basin margins in Qikou Sag by...
Article
Full-text available
The purpose of this study is to forecast the profitable oil and gas reservoir, which is the key of finding hydrocarbon, based on the conception of special geologic bodies. With the guiding methodology of the research thinking of integration of point-line-surface by using the methods and techniques of logging, seismic, seismic attribute, and logging...
Article
Full-text available
Based on sequence stratigraphy, according to 1340 wells, the authors analyzed the characteristic of hydrocarbon reservoirs enrichment in the sequence stratigraphic framework in Qikou sag. The research shows that hydrocarbon reservoirs enriched near the second order sequence interface in Qikou sag. The closer to the second order sequence interface,...
Article
Full-text available
Hydrocarbon enrichment relates to definite geologic condition. The enrichment of reservoirs shows certain regularity in the basin sequence stratigraphic framework, generally associated with the unconformity interface or tectonic transformation surface, and show different enrichment regularity in different basin margins. However, enrichment regulari...
Article
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Sediment fill and hydrocarbon reservoir character of Xiagou Formation and their correlation with structural evolution of Lower Crataceous in Ying'er Sag, Jiuquan Basin, NW China
Article
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The sequence pattern controlled by the structure evolution of Jiannan buried hill was analyzed. The balanced cross section was used to analyze the structural evolution of Jiannan buried-hill. The results show that the evolution can be divided into three stages: early uplift stage, medium-term development and stereotypes, and the decline stage. The...
Article
Full-text available
In the continental lake basin whose structures were extraordinarily active, tectonism is an important factor in controlling the sequence and the depositional filling of the basin. This article reports the assemble patterns of syndepositional fault in the third member of Shahejie (沙河街) Formation in Beitang (北塘) sag. The results show that the comb-sh...
Article
Reconstructed synsedimentary paleogeomorpholgy is an effective method in predicting the distribution of sandbodies and can provide valid evidence in the search for reservoirs. Based on a synsedimentary paleogeomorpholgy reconstruction of the third member of the Dongying formation (Ed3) in the Qikou sag, the basic paleogeomorphic characteristics of...

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