Sequence Stratigraphy, Sedimentary Characteristics of Barrier Coastal Sedimentary System of the Benxi Formation (Gaoqiao Area, Ordos Basin) and Implications for Gas Exploration

2021 ◽  
Author(s):  
Xin Xu ◽  
Linyu Liu ◽  
Xijun Li ◽  
Wenjing Yang ◽  
Yangang Cao ◽  
...  
Keyword(s):  
Sequence Stratigraphy ◽  
Ordos Basin ◽  
Sedimentary Characteristics ◽  
Sedimentary System ◽  
Benxi Formation

scholarly journals Sequence stratigraphy, sedimentary characteristics of barrier coastal sedimentary system of the Benxi Formation (Gaoqiao area, Ordos basin) and favorable reservoir distribution

2021 ◽  
Vol 7 ◽  
pp. 5316-5329
Author(s):  
Xin Xu ◽  
Linyu Liu ◽  
Xijun Li ◽  
Wenjing Yang ◽  
Yangang Cao ◽  
...  
Keyword(s):  
Sequence Stratigraphy ◽  
Ordos Basin ◽  
Sedimentary Characteristics ◽  
Sedimentary System ◽  
Benxi Formation

Sedimentary characteristics and detrital zircon U–Pb isotopes of the Upper Permian–Lower Triassic strata in eastern Ordos Basin, Central North China

2020 ◽  
Author(s):  
Yajun Liu ◽  
Zhiqiang Feng ◽  
Yongjiang Liu ◽  
Long Li ◽  
Weimin Li ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
North China ◽  
Ordos Basin ◽  
Lower Triassic ◽  
Pb Isotopes ◽  
Upper Permian ◽  
Sedimentary Characteristics

scholarly journals Seismic sedimentary characteristics and filling structure of the Upper Triassic Yanchang Formation, Ordos Basin, China

2020 ◽  
Vol 8 (2) ◽  
pp. T259-T274
Author(s):  
Congjun Feng ◽  
Mengsi Sun ◽  
Chiyang Liu ◽  
Xili Deng ◽  
Yuze Xue ◽  
...  
Keyword(s):  
Seismic Reflection ◽  
Ordos Basin ◽  
Yanchang Formation ◽  
Sedimentary Characteristics ◽  
Study Results ◽  
History Of ◽  
The Ordos Basin ◽  
Initial Depression ◽  
Depositional Age ◽  
Seismic Sections

Following the analysis of cores, outcrops, well log, and seismic sections, we have studied the seismic reflection configuration and depositional history of the hydrocarbon-rich Yanchang Formation in the Ordos Basin. We divided the seismic reflection configurations into five types: subparallel reflection, parallel reflection, tangential progradational reflection, shingled progradational reflection, and chaotic reflection. Based on our study results, we concluded that the slopes exhibit differences in the different regions of the Ordos Basin during the sedimentary period of the Yanchang Formation: The slope with the largest gradient of approximately 10°–20° occurred in the southwestern basin, followed by the northwestern basin (with a slope of approximately 1.6°–3.3°), but the slope was relatively gentle in the northeastern basin (approximately 0.8°–1.2°). We also found that the paleocurrent direction of the basin mainly includes two directions: The paleocurrent direction of the southwest region is 186°–259°, which indicates the provenance came from the southwestern region, whereas the paleocurrent direction of the northeast region is 10°–79°, which indicates that the provenance came from the northeastern region. In addition, the Ordos Basin was under isostatic subsidence as a whole during this period, and its sedimentary infilling evolution underwent five stages: the initial depression, intense depression, progradational filling, uplifting and denudation, as well as shrinking and extinction stages, just corresponding with the Chang 10-Chang 9, the Chang 8-Chang 7, the Chang 6-Chang 4+5, the Chang 3-Chang 2, and the Chang 1 depositional age, respectively.

Sequence Stratigraphy and Gas Reservoirs of Ordovician Carbonate in Ordos Basin, Northcentral China

AAPG Bulletin ◽  
1992 ◽  
Vol 76 ◽  
Author(s):  
XU, HUAIDA, China University of Geo
Keyword(s):  
Sequence Stratigraphy ◽  
Ordos Basin ◽  
Gas Reservoirs

scholarly journals Paleoenvironment and Organic Matter Accumulation Mechanism of Marine–Continental Transitional Shales: Outcrop Characterizations of the Carboniferous–Permian Strata, Ordos Basin, North China

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7445
Author(s):  
Leifu Zhang ◽  
Qun Zhao ◽  
Sizhong Peng ◽  
Zhen Qiu ◽  
Congjun Feng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Ordos Basin ◽  
Black Shales ◽  
Lower Permian ◽  
High Deposition Rate ◽  
Organic Matter Accumulation ◽  
Accumulation Mechanism ◽  
Transitional Environment ◽  
Geochemical Analyses ◽  
Benxi Formation

In the Carboniferous–Permian period, several organic-rich black shales were deposited in a marine–continental transitional environment in the Linfen area on the eastern margin of the Ordos Basin. Integrated sedimentological and organic geochemical analyses are performed on an outcrop in order to clarify the relationship between paleoenvironment and organic matter accumulation. The results of this study show that the marine–continental transitional strata of the Upper Carboniferous Benxi Formation to Lower Permian Taiyuan and Shanxi Formation exposed in the Linfen area are composed of sandstone, shale, coal, and limestone. Total organic carbon (TOC) contents of the studied samples were mainly distributed in the range of 0.59%–35.4%, with an average of 7.32%. From Benxi Formation to Shanxi formation, the humidity gradually increased, and the climate gradually changed from hot and humid to warm and humid during Carboniferous to Permian. The deposition of the Shanxi Formation ended with the climate returning to hot and humid, having an oxic-suboxic conditions and a high paleoproductivity. Paleoredox conditions and paleoproductivity are the two vital factors controlling the formation of organic matter in black shales. The transitional environment characterized by oxic-suboxic, relatively high deposition rate, and various source of organic matter, although different from the marine environment, provides a good material basis for the deposition of organic-rich shales.

scholarly journals Sedimentary characteristics of Yan 6 oil layer of Yan’an Formation in X area of Ordos Basin

2021 ◽  
Vol 2009 (1) ◽  
pp. 012062
Author(s):  
Meifang Zhao ◽  
Jifeng Wang
Keyword(s):  
Ordos Basin ◽  
Sedimentary Characteristics

scholarly journals Study on Rock Mechanics Parameters of Benxi Formation in Yanchang gas field, Ordos Basin

2020 ◽  
Vol 514 ◽  
pp. 022026
Author(s):  
Suya Zhang ◽  
Zhenhua Li
Keyword(s):  
Rock Mechanics ◽  
Ordos Basin ◽  
Gas Field ◽  
Benxi Formation
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