Da’anzhai member of Ziliujing Formation in Jurassic is a hot zone for lacustrine shale exploration and development in Sichuan Basin at present. In this paper, through rock observation and logging analysis of special elements, field emission scanning electron microscope observation, rock porosity experiment, X-ray whole rock diffraction (XRD), cryogenic nitrogen adsorption and other experimental analysis, the sedimentary environment and reservoir characteristics of lacustrine shale in the second sub-member of Jurassic Da’anzhai Member in Yuanba area, northeast Si-chuan Basin were systematically analyzed. The research results show that: The Sr/Cu, Sr/Ba, and V/(V+Ni) of the Da’anzhai Member shale range from 2.50 to 8.34, 0.15 to 0.47, and 0.65 to 0.79, indicating the warm and humid environment and anoxic freshwater lacustrine sedimentary facies, shallow lacustrine sedimentary facies and semi-deep lacustrine sedimentary facies. There are four lithologic assemblages: bedded mudstone intercalated shell limestone, sand-lime-mud ternary mixing, laminated-bedded mudstone intercalated shell limestone, thick bedded plaster mixing. Shale minerals are mainly clay minerals, quartz and calcite, with a small amount of feldspar, do-lomite and pyrite. The pore types are mainly inorganic pores, especially intergranular clay pores, while the content of organic matter pores is relatively small. Laminate-bedded mudstone intercalated limestone facies and bedded mudstone intercalated limestone facies have the characteristics of high brittleness, high porosity and high gas content due to their good source-reservoir configuration. At the same time, cleavage fractures and intercalated laminae are developed, which become the main strata in the Development of Da’anzhai Member.
{"title":"Sedimentary and Reservoir Characteristics of Black Shale in the Jurassic Da’anzhai Member in the Yuanba Area of Northeastern Sichuan","authors":"治光 金","doi":"10.12677/ag.2023.139102","DOIUrl":"https://doi.org/10.12677/ag.2023.139102","url":null,"abstract":"Da’anzhai member of Ziliujing Formation in Jurassic is a hot zone for lacustrine shale exploration and development in Sichuan Basin at present. In this paper, through rock observation and logging analysis of special elements, field emission scanning electron microscope observation, rock porosity experiment, X-ray whole rock diffraction (XRD), cryogenic nitrogen adsorption and other experimental analysis, the sedimentary environment and reservoir characteristics of lacustrine shale in the second sub-member of Jurassic Da’anzhai Member in Yuanba area, northeast Si-chuan Basin were systematically analyzed. The research results show that: The Sr/Cu, Sr/Ba, and V/(V+Ni) of the Da’anzhai Member shale range from 2.50 to 8.34, 0.15 to 0.47, and 0.65 to 0.79, indicating the warm and humid environment and anoxic freshwater lacustrine sedimentary facies, shallow lacustrine sedimentary facies and semi-deep lacustrine sedimentary facies. There are four lithologic assemblages: bedded mudstone intercalated shell limestone, sand-lime-mud ternary mixing, laminated-bedded mudstone intercalated shell limestone, thick bedded plaster mixing. Shale minerals are mainly clay minerals, quartz and calcite, with a small amount of feldspar, do-lomite and pyrite. The pore types are mainly inorganic pores, especially intergranular clay pores, while the content of organic matter pores is relatively small. Laminate-bedded mudstone intercalated limestone facies and bedded mudstone intercalated limestone facies have the characteristics of high brittleness, high porosity and high gas content due to their good source-reservoir configuration. At the same time, cleavage fractures and intercalated laminae are developed, which become the main strata in the Development of Da’anzhai Member.","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135551434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With significant breakthroughs in unconventional oil and gas exploration in continental lake basins, the products of mixed sedimentation of terrigenous debris and carbonate rocks in continen-*
{"title":"Research Progress in Mixed Sedimentation of Terrigenous Clastic and Carbonate Rocks in Continental Lake Basins","authors":"旭欢 连","doi":"10.12677/ag.2023.139100","DOIUrl":"https://doi.org/10.12677/ag.2023.139100","url":null,"abstract":"With significant breakthroughs in unconventional oil and gas exploration in continental lake basins, the products of mixed sedimentation of terrigenous debris and carbonate rocks in continen-*","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135551646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/ag.2023.1310116
心悦 朱
Based on the conventional ground meteorological observation and data from national environmental monitoring sites from 2015 to 2020 in Chengdu, the annual and monthly variation of ozone pollution and its relationship with meteorological factors were discussed. The results showed that ozone polluted days account for 9.9% of the total monitoring days, accounting for about a third of the total polluted days from 2015 to 2020. The proportion has been increasing year by year. The trend of monthly mean ozone concentration and monthly ozone polluted days is basically consistent, showing an “M” type bimodal distribution feature, reaching its peak in July. The daily average ozone concentration is positively correlated with the daily max temperature and sunshine hours, and negatively correlated with the min relative humidity. Quantitative analysis of meteorological conditions shows that from 2016 to 2019, meteorological conditions were conducive to a decrease in ozone concentration, while in 2020, meteorological conditions were conducive to an increase in ozone concentration.
{"title":"Analysis on the Ozone Pollution Characteristics and Its Influencing Factors in Chengdu","authors":"心悦 朱","doi":"10.12677/ag.2023.1310116","DOIUrl":"https://doi.org/10.12677/ag.2023.1310116","url":null,"abstract":"Based on the conventional ground meteorological observation and data from national environmental monitoring sites from 2015 to 2020 in Chengdu, the annual and monthly variation of ozone pollution and its relationship with meteorological factors were discussed. The results showed that ozone polluted days account for 9.9% of the total monitoring days, accounting for about a third of the total polluted days from 2015 to 2020. The proportion has been increasing year by year. The trend of monthly mean ozone concentration and monthly ozone polluted days is basically consistent, showing an “M” type bimodal distribution feature, reaching its peak in July. The daily average ozone concentration is positively correlated with the daily max temperature and sunshine hours, and negatively correlated with the min relative humidity. Quantitative analysis of meteorological conditions shows that from 2016 to 2019, meteorological conditions were conducive to a decrease in ozone concentration, while in 2020, meteorological conditions were conducive to an increase in ozone concentration.","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135211286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/ag.2023.1310111
义义 陈
Using conventional observation data from Guizhou Province, regional encrypted automatic ob-陈义义
{"title":"Preliminary Study on the Mechanism of Strong Convection Triggered by Surface Convergence Lines in Guizhou Region","authors":"义义 陈","doi":"10.12677/ag.2023.1310111","DOIUrl":"https://doi.org/10.12677/ag.2023.1310111","url":null,"abstract":"Using conventional observation data from Guizhou Province, regional encrypted automatic ob-陈义义","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135008767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/ag.2023.1310114
方 张
Highway flood damage is a common highway operation disaster. To analyze the current development trend and hot research direction in the field of highway flood damage research, takes “Highway flood damage” as the subject word, 392 document data collected by CNKI China Knowledge Network from 2000 to 2023 were visually analyzed by CiteSpace document analysis software. The results show that: 1) The research field of highway water damage has experienced a development stage of steady-growth-stability, and the field of highway water damage has at-tracted the attention of scholars earlier, but the research has been in a stable development state in the past 20 years. 2) Ma Baocheng, Ling Jianming, Tian Weiping, Zhao Hongduo, Chen Hongkai and other scholars are core researchers in the field, and their publication frequency is 5 or more. The Key Laboratory of Highway Engineering in Special Areas of Chang’an University of the Ministry of Education, the Institute of Geo technical Engineering of Chongqing Jiaotong University and the Key Laboratory of Road and Traffic Engineering of the Ministry of Education of Tongji University are the core research institutions in the field, but there are few cooperative researches among institutions in the field, and no mature cooperative research network has been formed. 3) “Highway water damage”, “highway engineering”, “rural road” and “mountain road” existed in the early stage, but in recent years, these three subject words have become research hot spots, and some scholars have achieved a number of results built on the existing research. The results of this study can help people to further sort out the main research status, development problems and achievements in the field of highway flood damage research in recent years. At the same time, by reviewing the main research and development process in the past two decades, it can also be used as a reference for relevant researchers to carry out the key research and future development prediction of this discipline in recent years.
{"title":"Research Hotspots and Development Trends of Highway Flood Damage Based on Knowledge Graph","authors":"方 张","doi":"10.12677/ag.2023.1310114","DOIUrl":"https://doi.org/10.12677/ag.2023.1310114","url":null,"abstract":"Highway flood damage is a common highway operation disaster. To analyze the current development trend and hot research direction in the field of highway flood damage research, takes “Highway flood damage” as the subject word, 392 document data collected by CNKI China Knowledge Network from 2000 to 2023 were visually analyzed by CiteSpace document analysis software. The results show that: 1) The research field of highway water damage has experienced a development stage of steady-growth-stability, and the field of highway water damage has at-tracted the attention of scholars earlier, but the research has been in a stable development state in the past 20 years. 2) Ma Baocheng, Ling Jianming, Tian Weiping, Zhao Hongduo, Chen Hongkai and other scholars are core researchers in the field, and their publication frequency is 5 or more. The Key Laboratory of Highway Engineering in Special Areas of Chang’an University of the Ministry of Education, the Institute of Geo technical Engineering of Chongqing Jiaotong University and the Key Laboratory of Road and Traffic Engineering of the Ministry of Education of Tongji University are the core research institutions in the field, but there are few cooperative researches among institutions in the field, and no mature cooperative research network has been formed. 3) “Highway water damage”, “highway engineering”, “rural road” and “mountain road” existed in the early stage, but in recent years, these three subject words have become research hot spots, and some scholars have achieved a number of results built on the existing research. The results of this study can help people to further sort out the main research status, development problems and achievements in the field of highway flood damage research in recent years. At the same time, by reviewing the main research and development process in the past two decades, it can also be used as a reference for relevant researchers to carry out the key research and future development prediction of this discipline in recent years.","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135158898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/ag.2023.1310109
璐凡 常
{"title":"Impact of Mine Water on Environmental Pollution in Xinzhai River Basin and Its Treatment","authors":"璐凡 常","doi":"10.12677/ag.2023.1310109","DOIUrl":"https://doi.org/10.12677/ag.2023.1310109","url":null,"abstract":"","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136366292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/ag.2023.1310108
然 毕
Microbial biomining technology has the advantages of lower cost, more environmental friendly and more sustainable. This paper is a review on the extraction of rare earth elements from ion-adsorbed rare-earth deposits minerals using microbial biomining methods. A new idea and
{"title":"Research Progress of Rare Earth Elements Extraction in Ion-Adsorbed Rare-Earth Deposits by Microbial Technology","authors":"然 毕","doi":"10.12677/ag.2023.1310108","DOIUrl":"https://doi.org/10.12677/ag.2023.1310108","url":null,"abstract":"Microbial biomining technology has the advantages of lower cost, more environmental friendly and more sustainable. This paper is a review on the extraction of rare earth elements from ion-adsorbed rare-earth deposits minerals using microbial biomining methods. A new idea and","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136366593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to clarify the pore structure characteristics and controlling factors of Permian Dalong Formation marine shale in Nanjiang area of northeastern Sichuan, the core of Dalong Formation in Well LB1 was selected as the research object, and the pore types and structures of shale were quantitatively characterized by scanning electron microscopy, low temperature nitrogen adsorption, high pressure mercury injection and FIB three-dimensional scanning comparative experimental analysis. The result shows that the shale of the Dalong Formation in Well LB1 is dominated by organic pores, the shape is mainly ink-bottle, and the pore connectivity is relatively poor. The pore size is mainly distributed in <2 nm and 10~50 nm, and the average specific surface area is 27.2 m 2 /g. The organic matter abundance and clay mineral content have a good positive correlation with shale porosity, micropore and mesopore volume. The development degree of type I ke-rogen organic matter pore is greater than that of type II 1 , and the development of bentonite is well corresponding to the content of Ba, indicating that TOC, organic matter type, clay mineral content and tuffaceous mineral content are the main controlling factors for the development of shale pores in the Dalong Formation in Nanjiang area. This paper provides theoretical support for the breakthrough of shale gas exploration in the Permian Dalong Formation of the new strata in Nan-jiang area.
{"title":"Pore Structure Characteristics and Controlling Factors of Dalong Formation Shale in Nanjiang Area, Northeastern Sichuan Basin","authors":"泽昕 苏","doi":"10.12677/ag.2023.139107","DOIUrl":"https://doi.org/10.12677/ag.2023.139107","url":null,"abstract":"In order to clarify the pore structure characteristics and controlling factors of Permian Dalong Formation marine shale in Nanjiang area of northeastern Sichuan, the core of Dalong Formation in Well LB1 was selected as the research object, and the pore types and structures of shale were quantitatively characterized by scanning electron microscopy, low temperature nitrogen adsorption, high pressure mercury injection and FIB three-dimensional scanning comparative experimental analysis. The result shows that the shale of the Dalong Formation in Well LB1 is dominated by organic pores, the shape is mainly ink-bottle, and the pore connectivity is relatively poor. The pore size is mainly distributed in <2 nm and 10~50 nm, and the average specific surface area is 27.2 m 2 /g. The organic matter abundance and clay mineral content have a good positive correlation with shale porosity, micropore and mesopore volume. The development degree of type I ke-rogen organic matter pore is greater than that of type II 1 , and the development of bentonite is well corresponding to the content of Ba, indicating that TOC, organic matter type, clay mineral content and tuffaceous mineral content are the main controlling factors for the development of shale pores in the Dalong Formation in Nanjiang area. This paper provides theoretical support for the breakthrough of shale gas exploration in the Permian Dalong Formation of the new strata in Nan-jiang area.","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135749372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In-situ stress is the fundamental basis for efficient exploration and development of tight reservoirs. Affected by regional fault structure and heterogeneous rock mechanical properties, the current stress field of tight oil reservoir in Y176 block of Bonan Oilfield varies complicatedly. In this research, 3D geological model is constructed based on high precision seismic interpretation data of 3D layers and faults. The heterogeneous rock mechanics parameters model of tight oil re-servoir is established by well logging data and seismic volume data sampling. The three-dimensional stress field simulation is carried out by using the structure strain coefficient method, and the re-sults are in good agreement with the measured in-situ stress magnitude and direction at the well site. The simulation results show that the in-situ stress is lower in southwest region and higher in northeast region for the Es 4 layer of Y176 block. The effect of fault structure and heterogeneous lithology on local stress field is significant. The in-situ stress fields change obviously within and between fault blocks. The numerical simulation of three-dimensional geostress in heterogeneous tight oil reservoirs provides accurate basic data for efficient exploration and development of tight reservoirs in Bonan Oilfield.
{"title":"Numerical Evolution of the Three-Dimensional Stress Field of the Heterogeneous Tight Reservoir—A Case Study of Y176 Area’ Bonan Sag","authors":"欣伟 魏","doi":"10.12677/ag.2023.139098","DOIUrl":"https://doi.org/10.12677/ag.2023.139098","url":null,"abstract":"In-situ stress is the fundamental basis for efficient exploration and development of tight reservoirs. Affected by regional fault structure and heterogeneous rock mechanical properties, the current stress field of tight oil reservoir in Y176 block of Bonan Oilfield varies complicatedly. In this research, 3D geological model is constructed based on high precision seismic interpretation data of 3D layers and faults. The heterogeneous rock mechanics parameters model of tight oil re-servoir is established by well logging data and seismic volume data sampling. The three-dimensional stress field simulation is carried out by using the structure strain coefficient method, and the re-sults are in good agreement with the measured in-situ stress magnitude and direction at the well site. The simulation results show that the in-situ stress is lower in southwest region and higher in northeast region for the Es 4 layer of Y176 block. The effect of fault structure and heterogeneous lithology on local stress field is significant. The in-situ stress fields change obviously within and between fault blocks. The numerical simulation of three-dimensional geostress in heterogeneous tight oil reservoirs provides accurate basic data for efficient exploration and development of tight reservoirs in Bonan Oilfield.","PeriodicalId":68092,"journal":{"name":"地球科学前沿(汉斯)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135551647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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