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Intact Microbial Fossils in the Permian Lucaogou Formation Oil Shale, Junggar Basin, NW China

International Journal of Coal Geology, 2015
Abstract The Permian Lucaogou Formation was deposited in a deep stratified lake with good preservation of the organic matter in the sediments likely due to anoxic bottom waters. The Lucaogou Formation oil shale contains excellent source rocks with high TOC contents (12.4–32.9 wt.%) and high HI values (547–869 mg HC/g TOC). The maceral compositions of
Zhirong Zhang   +2 more
exaly   +2 more sources

Lithofacies and Organic Geochemistry of the Middle Permian Lucaogou Formation in the Jimusar Sag of the Junggar Basin, NW China

Journal of Petroleum Science and Engineering, 2016
Abstract The Middle Permian Lucaogou Formation in the Jimusar Sag, Eastern Junggar Basin, is one of the highlights for unconventional petroleum exploration and development in China. Approximately 580 m-long cores from 18 wells in the Sag were carefully examined, and 500 core samples were collected.
Caineng Zou, Huifei Tao, Hongjie Ji
exaly   +2 more sources

Organic Matter Origin and Accumulation in Tuffaceous Shale of the Lower Permian Lucaogou Formation, Jimsar Sag

Journal of Petroleum Science and Engineering, 2019
Abstract The Jimsar Sag is an important shale oil exploration target area in the Junggar Basin, northwestern China. The lower Permian Lucaogou Formation, with a thickness of 200–300 m, is composed of thin tuffite, tuffaceous dolomite, mudstone and siltstone, and is the primary exploration target.
Yang Su, Xiujian Ding, Ming Zha
exaly   +2 more sources

Depositional Environment of Oil Shale Within the Second Member of Permian Lucaogou Formation in the Santanghu Basin, Northwest China

International Journal of Coal Geology, 2017
Abstract The non-marine Santanghu Basin in northwest China hosts one of the richest and thickest Permian lacustrine source rock intervals in the world. Conventional oil in Jurassic sandstone reservoirs and tight oil in the tuffaceous Permian Tiaohu Formation were sourced from mudrocks in the underlying second member of Lucaogou Formation, which also ...
Doris Gross   +2 more
exaly   +2 more sources

Geological and Engineering ‘Sweet Spots’ in the Permian Lucaogou Formation, Jimusar Sag, Junggar Basin

Acta Geologica Sinica - English Edition, 2023
AbstractUnconventional oil and gas resources require petrophysical logs to answer the question of how best to optimize geological and engineering ‘sweet spots’. Therefore, the establishment of a key well with comprehensive descriptions of lithology, reservoir properties, hydrocarbon‐bearing properties, electronic well log responses, source rock ...
Jin LAI   +7 more
openaire   +1 more source

Petrographic features and diagenetic alteration in the shale strata of the Permian Lucaogou Formation, Jimusar sag, Junggar Basin

Journal of Petroleum Science and Engineering, 2021
Abstract Reservoir quality is the key parameter controlling shale oil enrichment. However, the complicated lithofacies, which control diagenesis, result in reservoir heterogeneity in the shale strata, creating challenges for reservoir prediction. Combining with the detail analysis of inorganic and organic geochemistry, characteristics of the main ...
Miruo Lin   +5 more
openaire   +1 more source

Reevaluating the source and accumulation of tight oil in the middle Permian Lucaogou Formation of the Junggar Basin, China

Marine and Petroleum Geology, 2020
Abstract The middle Permian Lucaogou Formation in the Jimusar Sag, Junggar Basin, NW China, is a world-class example of tight oil accumulations in lacustrine sedimentary sequences. Previous studies have indicated that the main oil accumulation mechanism in this system is near-source accumulation within upper and lower “sweet spots” (i.e., reservoirs).
Yuce Wang   +5 more
openaire   +1 more source

Lacustrine tight oil accumulation characteristics: Permian Lucaogou Formation in Jimusaer Sag, Junggar Basin

International Journal of Coal Geology, 2016
Abstract The Permian Lucaogou Formation of Jimusaer Sag in the southeast region of the Junggar Basin is a typical area recently attracting tight oil reservoir research efforts in China. Commercial oil has been obtained from many wells in this region.
Zhe Cao   +8 more
openaire   +1 more source

A re-assessment and calibration of redox thresholds in the Permian Lucaogou Formation of the Malang Sag, Santanghu Basin, Northwest China

Marine and Petroleum Geology, 2022
Abstract Analysis of redox conditions of lake water is of great significance to the reconstruction of sedimentary environments. However, previously established threshold values of redox-sensitive element proxies may not be directly applicable to various study areas even with some degree of calibration.
Yongshuai Pan   +6 more
openaire   +1 more source

Natural tectonic fractures and their formation stages in tight reservoirs of Permian Lucaogou Formation, Jimsar Sag, southern Junggar Basin, NW China

Marine and Petroleum Geology, 2021
Abstract This study investigates natural tectonic fractures in 22 wells that penetrated the tight oil reservoirs in the middle Permian Lucaogou Formation in the southeastern Junggar Basin, China. Analysis was conducted using conventional image logs of wellbores, acoustic emissions (AEs) data collected from core rock mechanics testing, fluid inclusion
Xiangye Kong   +8 more
openaire   +1 more source

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