scholarly journals Quantitative Analysis on Shale Oil Accumulations Conditions for 4th Member of Shahejie Formation in Liaohe Western Depression

2015 ◽  
Vol 89 (s1) ◽  
pp. 158-161
Author(s):  
Tieya JING ◽  
Xiao HUANG ◽  
Rui SUN ◽  
Junli MAO ◽  
Jian ZHANG
Keyword(s):  
Quantitative Analysis ◽  
Shale Oil ◽  
Western Depression ◽  
Shahejie Formation

scholarly journals Shale pore characteristics of Shahejie Formation: Implication for pore evolution of shale oil reservoirs in Dongying sag, north China

2019 ◽  
Vol 4 (2) ◽  
pp. 113-124
Author(s):  
Shun Zhang ◽  
Huimin Liu ◽  
Min Wang ◽  
Xinjin Liu ◽  
Huilai Liu ◽  
...  
Keyword(s):  
North China ◽  
Oil Reservoirs ◽  
Shale Oil ◽  
Pore Characteristics ◽  
Dongying Sag ◽  
Pore Evolution ◽  
Shahejie Formation ◽  
Shale Oil Reservoirs

Shale oil and gas generating characteristics of lacustrine Shahejie formation in eastern sag of Liaohe depression, Northeast China

2018 ◽  
Vol 19 (1) ◽  
pp. 83
Author(s):  
Chengshan Wang ◽  
Shuangbiao Han ◽  
Jinchuan Zhang ◽  
Brian Horsfield
Keyword(s):  
Northeast China ◽  
Oil And Gas ◽  
Shale Oil ◽  
Shahejie Formation ◽  
Liaohe Depression

Geological Controls and Mechanism of Shale Gas and Shale Oil Accumulations in Liaohe Western Depression, China

2014 ◽  
Vol 32 (3) ◽  
pp. 503-525 ◽  
Author(s):  
Tieya Jing ◽  
Jinchuan Zhang ◽  
Junli Mao ◽  
Wanjun Li ◽  
Shengling Jiang
Keyword(s):  
Shale Gas ◽  
Shale Oil ◽  
Western Depression

scholarly journals Characterization of micro-nano pore networks in shale oil reservoirs of Paleogene Shahejie Formation in Dongying Sag of Bohai Bay Basin, East China

2017 ◽  
Vol 44 (5) ◽  
pp. 720-730 ◽  
Author(s):  
Qinhong HU ◽  
Yuxiang ZHANG ◽  
Xianghao MENG ◽  
Zheng LI ◽  
Zhonghuai XIE ◽  
...  
Keyword(s):  
Oil Reservoirs ◽  
East China ◽  
Bohai Bay ◽  
Shale Oil ◽  
Bohai Bay Basin ◽  
Pore Networks ◽  
Dongying Sag ◽  
Shahejie Formation ◽  
Shale Oil Reservoirs

scholarly journals Influence of a Paleosedimentary Environment on Shale Oil Enrichment: A Case Study on the Shahejie Formation of Raoyang Sag, Bohai Bay Basin, China

2021 ◽  
Vol 9 ◽  
Author(s):  
Yongbo Wei ◽  
Xiaoyan Li ◽  
Ruifeng Zhang ◽  
Xiaodong Li ◽  
Shuangfang Lu ◽  
...  
Keyword(s):  
Algal Blooms ◽  
Major And Trace Elements ◽  
Bohai Bay ◽  
Shale Oil ◽  
Low Oxygen ◽  
Oil Storage ◽  
Reducing Conditions ◽  
Geochemical Parameters ◽  
Moderate Salinity ◽  
Shahejie Formation

The characteristics of paleosedimentary environments are of great significance for the enrichment of organic matter (OM) and hydrocarbons in lacustrine shale. This study analyzed mineralogy, well logging data, organic geochemical parameters (total organic carbon and pyrolyzed hydrocarbon), inorganic geochemical parameters (major and trace elements), and multiple geochemical proxies based on inorganic geochemical parameters. These were used to reconstruct the paleosedimentary environment of the lower 1st Member of the Shahejie Formation (Es1L) to reveal OM and shale oil enrichment mechanisms and establish a shale oil enrichment model. The (Fe2O3+Al2O3)/(CaO + MgO), Sr/Ba, Rb/Sr, Cu/Al, and Th/U parameters indicate that the Es1L in Raoyang Sag was deposited in a paleoenvironment dominated by arid paleoclimate, reducing conditions, and saltwater. Paleoclimate, clastic influx intensity, preservation conditions, paleoproductivity, and paleosalinity all affect OM abundance. The OM accumulation in the shale of Es1L was mainly controlled by the high primary productivity of surface water due to algal blooms and moderate salinities, which was achieved using stratified water columns with low oxygen conditions in bottom water. As the main valuable sites for shale oil storage, carbonate mineral depositions are of great significance for oil enrichment. As the dominant lithofacies for oil enrichment, carbonate-rich shale and calcareous shale lithofacies were deposited under a drier paleoclimate, low clastic influx intensity, strong reducing conditions, high paleoproductivity, and moderate salinity paleoenvironment. Additionally, the profile of the shale oil sweet spot was determined through the combination of lithofacies, logging, and paleosedimentary environment data.

scholarly journals Pore Properties of the Lacustrine Shale in the Upper Part of the Sha-4 Member of the Paleogene Shahejie Formation in the Dongying Depression in East China

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-20
Author(s):  
Ziyi Wang ◽  
Liuping Zhang ◽  
Yuan Gao ◽  
Wenxiu Yang ◽  
Yongshi Wang ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Organic Carbon ◽  
Clay Minerals ◽  
Vitrinite Reflectance ◽  
Shale Oil ◽  
Dongying Depression ◽  
Shahejie Formation ◽  
Geological Factors ◽  
Lacustrine Shale ◽  
Pore Properties

Lacustrine shales hold a huge potential oil resource in China. Pore properties (pore volume, diameter, specific surface area, and fractal dimensions) and their relationships with geological factors (mineralogy, insoluble organic carbon, burial depth, and vitrinite reflectance) are critical for evaluating shale oil resource. However, the factors controlling pores for lacustrine shale oil remain unclear, as the relationships between pore properties of Soxhlet-extracted samples and geological factors have not been studied using multivariate analytical methods. In this paper, the samples from the lacustrine shale in the upper part of the Sha-4 Member of the Paleogene Shahejie Formation in the Dongying Depression were tested with a set of experiments including Soxhlet (solvent) extraction, X-ray diffraction mineral analysis, insoluble organic carbon, vitrinite reflectance, and low-pressure CO2 and N2 adsorption experiments. The micromesopore volume varies from 0.003 cm3/g to 0.045 cm3/g. The relationships of pore properties with geological factors were studied with partial least square regression analysis (PLSR analysis, a powerful multivariate regression analysis). The results of the PLSR analyses indicate that clay minerals and carbonates are two key factors affecting the pore properties of the lacustrine shale. Compared with marine shales, more clay minerals in the lacustrine shale make them become more important for controlling pores than organic matter. The PLSR results also illustrate that the shale with higher pore volume contains more clay minerals and fewer carbonates and thus is unfavorable for hydraulic fracturing. Therefore, the shale with high micromesopore volume may be unfavorable for shale oil production. The shale with the modest micromesopore volume (~0.036 cm3/g), relatively high content of brittle minerals (~71 wt%), and low clay mineral content (~29 wt%) is conducive to both oil storage and hydraulic fracturing for the development of the Es4U shale oil in the Dongying Depression in East China.

Geochemistry of source rocks in the Es3 and Es4 members in the Shahejie Formation of the Western Depression, Liaohe Oilfield, China

2011 ◽  
Vol 30 (4) ◽  
pp. 405-414 ◽  
Author(s):  
Weili Wang ◽  
Luofu Liu ◽  
Zhenxue Jiang ◽  
Ningning Zhong ◽  
Ying Wang ◽  
...  
Keyword(s):  
Source Rocks ◽  
Liaohe Oilfield ◽  
Western Depression ◽  
Shahejie Formation
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