Oil-source rock analysis and metallogenic significance of the palaeo-oil reservoir in the Qinglong antimony deposit, South China

2021 ◽  
pp. 104281
Author(s):  
Yong Cheng ◽  
Yuzhao Hu ◽  
Di Wang ◽  
Pengpeng Wang ◽  
Piyou Li ◽  
...  
Keyword(s):  
Source Rock ◽  
South China ◽  
Oil Reservoir ◽  
Oil Source ◽  
Rock Analysis

scholarly journals Sampling for oil source rock analysis, Scoresby Sund region, central East Greenland

1973 ◽  
Vol 55 ◽  
pp. 47-48
Author(s):  
N.B.H Stevens ◽  
K Perch-Nielsen
Keyword(s):  
Source Rock ◽  
Sedimentary Basin ◽  
Field Work ◽  
Upper Permian ◽  
Field Guide ◽  
East Greenland ◽  
Rock Types ◽  
Oil Source ◽  
Rock Analysis ◽  
Posidonia Shale

From the 12th to 25th of July outcrops of bituminous shales and limestones at four localities were visited by the authors. Three of the outcrops, at Fleming Fjord opposite Wegener Halvø, at Nathorst Fjord and at Edderfugledal were of Myalina Limestone of the Triassic Solfaldsdal Member. The fourth locality in the Schuchert Flod area near the western edge of the sedimentary basin involved the Upper Permian Posidonia Shale Member. The main purpose of the field work was for Stevens, as the Survey's consultant, to get acquainted with the geology of the main rock types in the field, mainly with respect to environments of deposition and also to discover indications or proofs of the migration of hydrocarbons. Perch-Nielsen being conversant with the geology from previous seasons mapping acted as field guide. Samples were collected for analysis to increase the information already obtained from samples collected by the Survey during previous mapping.

scholarly journals Effective source rock selection and oil–source correlation in the Western Slope of the northern Songliao Basin, China

2021 ◽  
Vol 18 (2) ◽  
pp. 398-415
Author(s):  
He Bi ◽  
Peng Li ◽  
Yun Jiang ◽  
Jing-Jing Fan ◽  
Xiao-Yue Chen
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Thermal Evolution ◽  
Songliao Basin ◽  
Source Rocks ◽  
Crude Oils ◽  
Western Slope ◽  
Geochemical Parameters ◽  
Group I ◽  
Oil Source

AbstractThis study considers the Upper Cretaceous Qingshankou Formation, Yaojia Formation, and the first member of the Nenjiang Formation in the Western Slope of the northern Songliao Basin. Dark mudstone with high abundances of organic matter of Gulong and Qijia sags are considered to be significant source rocks in the study area. To evaluate their development characteristics, differences and effectiveness, geochemical parameters are analyzed. One-dimensional basin modeling and hydrocarbon evolution are also applied to discuss the effectiveness of source rocks. Through the biomarker characteristics, the source–source, oil–oil, and oil–source correlations are assessed and the sources of crude oils in different rock units are determined. Based on the results, Gulong and Qijia source rocks have different organic matter primarily detrived from mixed sources and plankton, respectively. Gulong source rock has higher thermal evolution degree than Qijia source rock. The biomarker parameters of the source rocks are compared with 31 crude oil samples. The studied crude oils can be divided into two groups. The oil–source correlations show that group I oils from Qing II–III, Yao I, and Yao II–III members were probably derived from Gulong source rock and that only group II oils from Nen I member were derived from Qijia source rock.

Organic geochemistry, oil-source rock, and oil-oil correlation study in a major oilfield in the Middle East

2021 ◽  
pp. 109074
Author(s):  
Majid Safaei-Farouji ◽  
Mohammad Reza Kamali ◽  
Hossain Rahimpour-Bonab ◽  
Thomas Gentzis ◽  
Bo Liu ◽  
...  
Keyword(s):  
Middle East ◽  
Source Rock ◽  
Organic Geochemistry ◽  
Correlation Study ◽  
Oil Source

scholarly journals Petroleum system analysis of the Mishrif reservoir in the Ratawi, Zubair, North and South Rumaila oil fields, southern Iraq

GeoArabia ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 91-108 ◽  
Author(s):  
Thamer K. Al-Ameri ◽  
Amer Jassim Al-Khafaji ◽  
John Zumberge
Keyword(s):  
Source Rock ◽  
Lower Cretaceous ◽  
System Analysis ◽  
Isotopic Analysis ◽  
Upper Jurassic ◽  
Source Rocks ◽  
Core Samples ◽  
Biomarker Analysis ◽  
Sulaiy Formation ◽  
Rock Analysis

ABSTRACT Five oil samples reservoired in the Cretaceous Mishrif Formation from the Ratawi, Zubair, Rumaila North and Rumaila South fields have been analysed using Gas Chromatography – Mass Spectroscopy (GC-MS). In addition, fifteen core samples from the Mishrif Formation and 81 core samples from the Lower Cretaceous and Upper Jurassic have been subjected to source rock analysis and palynological and petrographic description. These observations have been integrated with electric wireline log response. The reservoirs of the Mishrif Formation show measured porosities up to 28% and the oils are interpreted as being sourced from: (1) Type II carbonate rocks interbedded with shales and deposited in a reducing marine environment with low salinity based on biomarkers and isotopic analysis; (2) Upper Jurassic to Lower Cretaceous age based on sterane ratios, analysis of isoprenoids and isotopes, and biomarkers, and (3) Thermally mature source rocks, based on the biomarker analysis. The geochemical analysis suggests that the Mishrif oils may have been sourced from the Upper Jurassic Najma or Sargelu formations or the Lower Cretaceous Sulaiy Formation. Visual kerogen assessment and source rock analysis show the Sulaiy Formation to be a good quality source rock with high total organic carbon (up to 8 wt% TOC) and rich in amorphogen. The Lower Cretaceous source rocks were deposited in a suboxic-anoxic basin and show good hydrogen indices. They are buried at depths in excess of 5,000 m and are likely to have charged Mishrif reservoirs during the Miocene. The migration from the source rock is likely to be largely vertical and possibly along faults before reaching the vuggy, highly permeable reservoirs of the Mishrif Formation. Structural traps in the Mishrif Formation reservoir are likely to have formed in the Late Cretaceous.

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