Results 71 to 80 of about 708,392 (326)

Evolution of prototype basin and change of tectonic-sedimentary pattern in Paleozoic, Ordos Basin

open access: yesShiyou shiyan dizhi, 2022
The Ordos Basin is a craton basin developed based on the Precambrian rift system during Permian. It has experienced two stages of evolution including the Early Paleozoic craton marginal depression and Late Paleozoic intra-craton depression.
Faqi HE, Fubin WANG, Liguo GUO, Chuan AN
doaj   +1 more source

Distribution of Upper Paleozoic Coal Seams in the Southeastern Ordos Basin

open access: yesEnergies, 2022
The Ordos Basin contains abundant coal resources in the Upper Paleozoic strata. They are shallowly buried or exposed in the periphery of the basin, forming recoverable coal mines and coalbed methane resources. For the deeply buried coal seams of the basin, however, due to complex changes and difficult mining, less attention was paid before.
Yunwen Guan   +5 more
openaire   +2 more sources

Comprehensive Evaluation of In‐Situ Stress Field in Ultra‐Deep Bedrock Gas Reservoirs

open access: yesEnergy Science &Engineering, EarlyView.
Log interpretation results diagram of rock mechanical parameters for ultra‐deep bedrock in Well k1‐1. ABSTRACT Ultra‐deep bedrock gas exploration remains at a preliminary stage, where comprehensive in‐situ stress evaluation can provide crucial guidance for sweet spot prediction.
Houjiang Fan, Shuai Yin
wiley   +1 more source

Multiscale NMR Characterization in Shale: From Relaxation Mechanisms to Porous Media Research Frontiers

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Nuclear magnetic resonance (NMR), as an advanced non‐destructive and rapid measurement technology, has shown unique advantages in the evaluation of unconventional shale reservoirs. This paper systematically introduces the fundamental principles of NMR spectroscopy and relaxation theory in porous media and comprehensively analyzes the ...
Long Zhou   +8 more
wiley   +1 more source

Optimization of Production System of Shale Oil Development in Ordos basin, China

open access: yesScientific Reports, 2022
Abstract In this paper, production system(PS) of shale oil is optimized according to production data and indoor experiments, including core and fluid tests. Results showed that: ① Pressure drop rate at wellhead is a reasonable reference for the determination of post-fracture shut-in duration (PFSID).
Xiaolong Wan   +4 more
openaire   +3 more sources

Linguistic Evidence Suggests that Xiōng‐nú and Huns Spoke the Same Paleo‐Siberian Language

open access: yesTransactions of the Philological Society, EarlyView.
Abstract The Xiōng‐nú were a tribal confederation who dominated Inner Asia from the third century BC to the second century AD. Xiōng‐nú descendants later constituted the ethnic core of the European Huns. It has been argued that the Xiōng‐nú spoke an Iranian, Turkic, Mongolic or Yeniseian language, but the linguistic affiliation of the Xiōng‐nú and the ...
Svenja Bonmann, Simon Fries
wiley   +1 more source

鄂尔多斯盆地姬塬地区长6 储层矿物含量与孔隙度的线性关系 [PDF]

open access: yes, 2019
矿物含量是影响储层物性的重要因素之一。为了较全面地分析不同类型矿物含量对储层孔隙度的影响,以鄂尔多斯盆地姬塬地区长6 砂岩储层为例,探索性地运用多元逐步线性回归法分析了石英含量(x1)、长石含量(x2)、岩屑含量(x3)、绿泥石含量(x4)、伊利石含量(x5)、高岭石含量(x6)、硅质含量(x7)以及铁方解石含量(x8)与孔隙度(y)的关系,建立了矿物含量(xi)与孔隙度(y)之间的回归模型:y = 21.131-0.086 x2-0.113 x3-0.554 x4-0.370 x5-0.199 x6 ...
李小燕
core  

Unconventional Natural Gas Accumulations in Stacked Deposits: A Discussion of Upper Paleozoic Coal‐Bearing Strata in the East Margin of the Ordos Basin, China

open access: yesActa Geologica Sinica - English Edition, 2019
The Upper Paleozoic (Carboniferous to Permian) succession in the east margin of the Ordos Basin in the North China Craton has a potential to contain significant hydrocarbon resources, though attention have been mainly attracted for its successful ...
Yong Li   +5 more
semanticscholar   +1 more source

LA-ICP-MS U-Pb geochronology of detrital zircons from the Jining Complex, North China Craton and its tectonic significance [PDF]

open access: yes, 2006
LA-ICP-MS U-Pb zircon dating and cathodoluminescene (CL) image analysis were carried out to determine the protolith and metamorphic ages of high-grade Al-rich gneisses, named as "khondalites", from the Jining Complex of the North China Craton (NCC).
Luo, Y, Sun, M, Xia, X, Zhao, G
core   +1 more source

Crustal structure and deformation beneath the NE margin of the Tibetan plateau constrained by teleseismic receiver function data [PDF]

open access: yes, 2015
We analysed a large amount of teleseismic receiver function data recorded by 172 broadband stations in the NE Tibetan plateau and its surrounding areas to investigate the crustal velocity and anisotropy structure beneath the margin.
Chen, Yuntai   +3 more
core   +1 more source

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