Oligocarpia kepingensis sp. nov. from the Lower Permian of the northern Tarim Basin, Xinjiang and itsin situ spores

1999 ◽  
Vol 44 (2) ◽  
pp. 108-112 ◽  
Author(s):  
Yongdong Wang ◽  
Xiuyuan Wu
Keyword(s):  
Tarim Basin ◽  
Lower Permian ◽  
Northern Tarim Basin

Emplacement of intrusions of the Tarim Flood Basalt Province and their impacts on oil and gas reservoirs: A 3D seismic reflection study in Yingmaili fields, Tarim Basin, northwest China

2017 ◽  
Vol 5 (3) ◽  
pp. SK51-SK63 ◽  
Author(s):  
Zhongbo Gao ◽  
Wei Tian ◽  
Lei Wang ◽  
Yongmin Shi ◽  
Mao Pan
Keyword(s):  
Tarim Basin ◽  
Seismic Reflection ◽  
Oil And Gas ◽  
Northwest China ◽  
Lower Permian ◽  
Magmatic Activity ◽  
3D Seismic ◽  
Gas Reservoirs ◽  
Oil And Gas Reservoirs ◽  
Northern Tarim Basin

A basaltic dike-sill network is emplaced into the shallow subsurface of the Yingmai-2 dome, northern Tarim Basin, northwest China. The 3D seismic reflection imaging suggests that these dikes and sills are fed from an intrusion at the focal area of the dome. This basaltic intrusion has a width of approximately 3000 m and thickness of approximately 1000 m, and it is connected with a much larger Early Permian igneous body in the northern Tarim Basin. An unconformity between the Permian basalt lava flows and the base Triassic conglomerates truncates the dome, meaning that the dome must have developed prior to the Triassic. The basaltic intrusion that emplaced beneath the dome likely pushed the surrounding middle Cambrian salts away and instigated uplift of the overlying upper Cambrian to the lower Permian strata. In most cases, igneous activity plays a negative role on formation of oil and gas reservoirs. However, in the Yingmai-2 case, intrusive magmatic activity has caused “forced folding” of the overburdened strata and controlled the formation of a large commercial oil trap. We suggest that the magmatic activity thus also acts as a positive role on the local formation of a producing petroleum system.

Determination of oil charge timing in the Ordovician carbonate reservoir of the Tahe Oilfield, Tarim Basin, NW China

2021 ◽  
Author(s):  
Jiaxu Chen ◽  
Xiaowen Guo
Keyword(s):  
Tarim Basin ◽  
Sedimentary Basins ◽  
Carbonate Reservoir ◽  
Rock Interaction ◽  
Tahe Oilfield ◽  
Petroleum Systems ◽  
Calcite Veins ◽  
Homogenization Temperatures ◽  
Two Phases ◽  
Northern Tarim Basin

<p>Determining the timings of oil charge in sedimentary basins are essential to understand the evolutionary histories of petroleum systems, especially in sedimentary basins with complicated tectonic evolution and thermal histories. The Ordovician carbonate reservoir in the Tahe Oilfield, which is located in the northern Tarim Basin, comprises the largest marine reservoirs in China with reserves up to 3.2×10<sup>8</sup> t. This study aims to determine the timings of oil charge in the Ordovician carbonate reservoir in the Tahe Oilfield, Tarim Basin, which basin is subjected to multiple phases of tectonic deformations and oil charge. The phases of calcite veins that contain oil inclusions were systematically investigated by cathodoluminescence observation, in situ rare earth element, C, O, and Sr isotope analyses. The homogenization temperatures of aqueous inclusions that are coeval with oil inclusions were measured to determine the timings of oil charge by combining the burial and geothermal histories. Two phases of calcite veins were judged by the differences in cathodoluminescence color, Ce anomaly, δ<sup>18</sup>O, and <sup>87</sup>Sr/<sup>86</sup>Sr values, which might be caused by variations in the water-rock interaction processes during different calcite phases. Primary oil inclusions with yellow fluorescence were observed in the two phases of calcite veins, suggesting two phases of oil charge. By combining the homogenization temperatures of aqueous inclusions with the burial and geothermal histories, the timing of phase I oil charge was inferred to be 336–312 Ma, and the timing of phase II oil charge was inferred to be 237–217 Ma.</p>

Abundant microspherules from the Upper Ordovician of northern Tarim Basin, Northwest China: Origin and palaeoenvironmental implications

2018 ◽  
Vol 53 (6) ◽  
pp. 2896-2907 ◽  
Author(s):  
Xiao-Lin Chang ◽  
Ming-Cai Hou ◽  
Xin-Chun Liu ◽  
Elizabeth Orr ◽  
Min Deng ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Northwest China ◽  
Upper Ordovician ◽  
Northern Tarim Basin

The Uyghur Empire (744–840)

2017 ◽  
Author(s):  
Michael R. Drompp
Keyword(s):  
Tarim Basin ◽  
Tang Dynasty ◽  
Trade Routes ◽  
The North ◽  
The Tang Dynasty ◽  
Nomadic People ◽  
Eastern Inner Mongolia ◽  
Northern Tarim Basin ◽  
Economic Ties ◽  
River Valleys

The Uyghurs (Chinese Huihe迴 紇, Huihu回鶻) were a pastoral nomadic people living in the region of the Selenga and Orkhon river valleys in modern Mongolia; they spoke a Turkic language. The empire that they created on the steppe lasted for nearly a century (744–840) and played an important role, both politically and culturally, in East Asia. Centered on the Mongolian Plateau, the Uyghur Empire at its height controlled numerous other peoples within a territory that included lands to the north in the modern regions of Tuva and Buryatia, as well as some parts of the northern Tarim Basin and eastern Inner Mongolia.1 During its eventful history, the Uyghur Empire sent cavalry to help the Tang Dynasty put down the An Lushan rebellion, maintained strong political and economic ties with China, fought with the Tibetan Empire for control of important international trade routes, built cities on the steppe, celebrated its rulers’ achievements in stone stelae, and—uniquely in the world—adopted Manichaeism as its state religion. After their empire collapsed, the Uyghurs developed new polities in Gansu and the Tarim Basin that continued to exercise influence in Inner Asia.

POTENTIAL STRUCTURAL TRAPS ASSOCIATED WITH LOWER CARBONIFEROUS SALT IN THE NORTHERN TARIM BASIN, NW CHINA

2004 ◽  
Vol 27 (1) ◽  
pp. 67-84
Author(s):  
Jiangyu Zhou ◽  
Zhongmin Lin ◽  
Chuangrong Luo ◽  
Xiepei Wang
Keyword(s):  
Tarim Basin ◽  
Lower Carboniferous ◽  
Nw China ◽  
Northern Tarim Basin

scholarly journals Hydrothermal Dissolution of Deeply Buried Cambrian Dolomite Rocks and Porosity Generation: Integrated with Geological Studies and Reactive Transport Modeling in the Tarim Basin, China

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-19 ◽  
Author(s):  
Wenwen Wei ◽  
Daizhao Chen ◽  
Hairuo Qing ◽  
Yixiong Qian
Keyword(s):  
Tarim Basin ◽  
Carbonate Rocks ◽  
Reactive Transport ◽  
Wall Rock ◽  
Transport Modeling ◽  
Reactive Transport Modeling ◽  
Fluid Temperature ◽  
Upward Migration ◽  
Vertical Permeability ◽  
Northern Tarim Basin

The burial dissolution of carbonate rocks has long been an interesting topic of reservoir geologists. Integrated with geological studies and reactive transport modeling, this study investigated the Cambrian dolomites that were buried at depths up to 8408 m and still preserved a large amount of unfilled dissolution vugs from the borehole TS1 in the northern Tarim Basin. Studies indicate that these vugs were formed in association with fault-channeled hydrothermal fluids from greater depth through “retrograde dissolution” as the fluid temperature dropped during upward migration. The reactive transport modeling results suggest an important control of the vertical permeability of wall-rock on fluid and temperature patterns which, in turn, would control the spatial distribution of dissolving-originated porosity. The hydrothermal dissolution mainly occurred in dolomite wall-rocks with higher vertical permeability (extensive development of tensional fractures and connected pore spaces), producing additional dissolved porosity there during deep burial. This study implicates the importance of multidisciplinary approaches for understanding the burial/hydrothermal dissolution of dolomite rocks and predicting favourable deep/ultradeep carbonate reservoirs.

The Early Hercynian paleo-karstification in the Block 12 of Tahe oilfield, northern Tarim Basin, China

2013 ◽  
Vol 29 (3) ◽  
pp. 251-261 ◽  
Author(s):  
Xuefei Yang ◽  
Xingzhi Wang ◽  
Hao Tang ◽  
Yong Ding ◽  
Haitao Lv ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Tahe Oilfield ◽  
Northern Tarim Basin
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