An evaluation system of hydrocarbon-bearing availability of fault traps was established based on the comprehensive analysis of fault segment growth history,fine reservoir anatomy and geochemistry tracing,with the Qiko...An evaluation system of hydrocarbon-bearing availability of fault traps was established based on the comprehensive analysis of fault segment growth history,fine reservoir anatomy and geochemistry tracing,with the Qikou sag in the Bohai Bay Basin as target area.The displacement/separation transform and displacement gradient method were used to prove the interpretation reliability of fault traps.The method of maximum throw subtraction was used to recover the history of fault growth and determine the availability of the forming period of fault traps.Based on the quantitative relationship between shale gouge ratio and cross-fault pressure difference of known reservoirs in southern Qikou sag,the critical shale gouge ratio of fault lateral sealing was calculated at 20%,and the quantitative evaluation chart based on the relationship of"fault throw–sand-formation ratio and hydrocarbon column height"was constructed.Based on the results of reservoir fine anatomy and quantitative fluorescence tracing test shale smear factor method is suitable for evaluating the vertical sealing of faults in the caprock of the middle submember of first member of Paleogene Shahejie Formation,and the shale smear factor critical value is 3.5.The juxtaposition thickness method is suitable for evaluating vertical sealing of faults in the caprock of the second member of Paleogene Dongying Formation,and the critical juxtaposition thickness of fault is 70–80 m.By combining four factors,the availability of fault trap interpretation,the availability of the forming period of fault trap,the availability of fault lateral sealing and the availability of fault vertical sealing,the comprehensive evaluation chart on hydrocarbon-bearing availability of fault traps in Qikou sag has been established,which provides a reasonable basis for risk assessment of fault traps.展开更多
论文以Web of Science核心数据库为样本数据来源,运用文献计量分析方法和Bibliometrix工具包,对2001-2020年的中国脱贫研究进行可视化分析,旨在揭示国际学术界中国脱贫研究的现状、热点与趋势。结果表明,近年来中国脱贫研究呈显著增长趋...论文以Web of Science核心数据库为样本数据来源,运用文献计量分析方法和Bibliometrix工具包,对2001-2020年的中国脱贫研究进行可视化分析,旨在揭示国际学术界中国脱贫研究的现状、热点与趋势。结果表明,近年来中国脱贫研究呈显著增长趋势,中国学者和机构的科研产出占据核心地位。本领域的知识基础和实证经验包括:基于大数据的中国脱贫现状、贫困测量标准的开发和验证、移民安置现状、影响贫困的因素、土地政策创新、贫困的经济学基础等。研究热点聚焦:脱贫与可持续发展之间的关系、经济增长与脱贫之间的关系、发展不均衡对农村脱贫的影响、多维度贫困指标的开发和应用、扶贫政策的实施及效果等。未来新的研究方向包括:乡村振兴、脱贫动态监测机制、返贫潜在风险群体、城乡统筹脱贫等。展开更多
基金Supported by the National Natural Science Foundation of China(41972157)Natural Science Foundation of Heilongjiang Province,China(TD2019D001)+1 种基金Natural Science Foundation of Heilongjiang Province,China(QC2018041)PetroChina Major Project of Ministry of Science and Technology(2019D-0706)。
文摘An evaluation system of hydrocarbon-bearing availability of fault traps was established based on the comprehensive analysis of fault segment growth history,fine reservoir anatomy and geochemistry tracing,with the Qikou sag in the Bohai Bay Basin as target area.The displacement/separation transform and displacement gradient method were used to prove the interpretation reliability of fault traps.The method of maximum throw subtraction was used to recover the history of fault growth and determine the availability of the forming period of fault traps.Based on the quantitative relationship between shale gouge ratio and cross-fault pressure difference of known reservoirs in southern Qikou sag,the critical shale gouge ratio of fault lateral sealing was calculated at 20%,and the quantitative evaluation chart based on the relationship of"fault throw–sand-formation ratio and hydrocarbon column height"was constructed.Based on the results of reservoir fine anatomy and quantitative fluorescence tracing test shale smear factor method is suitable for evaluating the vertical sealing of faults in the caprock of the middle submember of first member of Paleogene Shahejie Formation,and the shale smear factor critical value is 3.5.The juxtaposition thickness method is suitable for evaluating vertical sealing of faults in the caprock of the second member of Paleogene Dongying Formation,and the critical juxtaposition thickness of fault is 70–80 m.By combining four factors,the availability of fault trap interpretation,the availability of the forming period of fault trap,the availability of fault lateral sealing and the availability of fault vertical sealing,the comprehensive evaluation chart on hydrocarbon-bearing availability of fault traps in Qikou sag has been established,which provides a reasonable basis for risk assessment of fault traps.
文摘论文以Web of Science核心数据库为样本数据来源,运用文献计量分析方法和Bibliometrix工具包,对2001-2020年的中国脱贫研究进行可视化分析,旨在揭示国际学术界中国脱贫研究的现状、热点与趋势。结果表明,近年来中国脱贫研究呈显著增长趋势,中国学者和机构的科研产出占据核心地位。本领域的知识基础和实证经验包括:基于大数据的中国脱贫现状、贫困测量标准的开发和验证、移民安置现状、影响贫困的因素、土地政策创新、贫困的经济学基础等。研究热点聚焦:脱贫与可持续发展之间的关系、经济增长与脱贫之间的关系、发展不均衡对农村脱贫的影响、多维度贫困指标的开发和应用、扶贫政策的实施及效果等。未来新的研究方向包括:乡村振兴、脱贫动态监测机制、返贫潜在风险群体、城乡统筹脱贫等。
