Lithofacies composition and geological significance of black rock series: a case study from the lower Cambrian Qiongzhusi Formation in Huize area, eastern Yunnan province
Lithofacies is an important basis for the characterization of source rocks, shale oil and tight oil reservoirs and the evaluation of oil and gas reservoirs. In this study, a well-developed Qiongzhusi Formation section in Huize area was selected to study the lithofacies features and their evolution a...
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| Veröffentlicht in: | IOP conference series. Earth and environmental science 2020-07, Vol.546 (3), p.32055 |
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| container_title | IOP conference series. Earth and environmental science |
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| creator | Cheng, Yong Lu, Ping Nie, Qi Liu, Zhennan Liu, Cong Wen, Yiming Guo, Yufeng Wu, Shili |
| description | Lithofacies is an important basis for the characterization of source rocks, shale oil and tight oil reservoirs and the evaluation of oil and gas reservoirs. In this study, a well-developed Qiongzhusi Formation section in Huize area was selected to study the lithofacies features and their evolution and the following conclusions are obtained. In the geological section, the lower part of the Qiongzhusi Formation black rock series is mainly composed of felsic fine-grained sedimentary rock (I) and dolomite or limestone (II). The middle part of the section is clayey felsic fine-grained sedimentary rock (I2), and the upper part is felsic clay rock (III2). Lithologic changes in Qiongzhusi Formation were controlled by terrigenous debris supply, hydrodynamic conditions and water depth. The felsic fine-grained sedimentary rocks formed when the water body was relatively deep in the early stage and the felsic clay rocks deposited when the terrigenous clastic supply was weakened in the middle to late stage have a high content of original organic matter, which is a favorable site for the evaluation of shale gas reservoirs. |
| doi_str_mv | 10.1088/1755-1315/546/3/032055 |
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In this study, a well-developed Qiongzhusi Formation section in Huize area was selected to study the lithofacies features and their evolution and the following conclusions are obtained. In the geological section, the lower part of the Qiongzhusi Formation black rock series is mainly composed of felsic fine-grained sedimentary rock (I) and dolomite or limestone (II). The middle part of the section is clayey felsic fine-grained sedimentary rock (I2), and the upper part is felsic clay rock (III2). Lithologic changes in Qiongzhusi Formation were controlled by terrigenous debris supply, hydrodynamic conditions and water depth. The felsic fine-grained sedimentary rocks formed when the water body was relatively deep in the early stage and the felsic clay rocks deposited when the terrigenous clastic supply was weakened in the middle to late stage have a high content of original organic matter, which is a favorable site for the evaluation of shale gas reservoirs.</description><identifier>ISSN: 1755-1307</identifier><identifier>EISSN: 1755-1315</identifier><identifier>DOI: 10.1088/1755-1315/546/3/032055</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Cambrian ; Clay ; Dolomite ; Geology ; Limestone ; Oil ; Oil reservoirs ; Organic matter ; Reservoirs ; Sedimentary rocks ; Shale ; Shale gas ; Shale oil ; Shales ; Water bodies ; Water depth</subject><ispartof>IOP conference series. Earth and environmental science, 2020-07, Vol.546 (3), p.32055</ispartof><rights>Published under licence by IOP Publishing Ltd</rights><rights>2020. 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Earth and environmental science</title><addtitle>IOP Conf. Ser.: Earth Environ. Sci</addtitle><description>Lithofacies is an important basis for the characterization of source rocks, shale oil and tight oil reservoirs and the evaluation of oil and gas reservoirs. In this study, a well-developed Qiongzhusi Formation section in Huize area was selected to study the lithofacies features and their evolution and the following conclusions are obtained. In the geological section, the lower part of the Qiongzhusi Formation black rock series is mainly composed of felsic fine-grained sedimentary rock (I) and dolomite or limestone (II). The middle part of the section is clayey felsic fine-grained sedimentary rock (I2), and the upper part is felsic clay rock (III2). Lithologic changes in Qiongzhusi Formation were controlled by terrigenous debris supply, hydrodynamic conditions and water depth. 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Earth and environmental science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, Yong</au><au>Lu, Ping</au><au>Nie, Qi</au><au>Liu, Zhennan</au><au>Liu, Cong</au><au>Wen, Yiming</au><au>Guo, Yufeng</au><au>Wu, Shili</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lithofacies composition and geological significance of black rock series: a case study from the lower Cambrian Qiongzhusi Formation in Huize area, eastern Yunnan province</atitle><jtitle>IOP conference series. Earth and environmental science</jtitle><addtitle>IOP Conf. Ser.: Earth Environ. 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| subjects | Cambrian Clay Dolomite Geology Limestone Oil Oil reservoirs Organic matter Reservoirs Sedimentary rocks Shale Shale gas Shale oil Shales Water bodies Water depth |
| title | Lithofacies composition and geological significance of black rock series: a case study from the lower Cambrian Qiongzhusi Formation in Huize area, eastern Yunnan province |
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