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Evidence of the Near-Source Accumulation of the Tight Sandstone Gas in Northern Ordos Basin,North-Central China

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1820-1835页

作者： YANG Zhi li qiyan WU Songtao liN Senhu liU Xinshen Research Institute of Petroleum Exploration & Development Petro China Research Institute of Exploration and Development Petro China Changqing Oilfield Company

The tight sandstone gas in Upper Paleozoic Formation of the northern Ordos Basin is a typical giant unconventional tight gas province. Evidences from geochemistry, reservoir geology and paleotectonic setting all verify that the present-day tight sandstone gas accumulation in the Ordos Basin is the result of near-source accumulation. The evidences are listed as following： tight sandstone gas is mainly distributed in the area with high gas-generating strength; gas composition was not subjected tofractionation; gas saturation significantly decreases with the distance away from the source rocks; gas isotopes suggest their origin is the same and maturity is consistent with in-place source rocks; reservoirs have experienced three types of densification digenesis, including intense compaction, siliceous cementation and calcareous cementation, which took place before the formation of a large amount of tight sandstone gas, forming tight reservoirs with low porosity and permeability, fine pore throat and great capillary resistance; the paleo-structural gradient ratio is small from the main hydrocarbon generation period to present. It is indicated the present distribution of tight sandstone gas in the northern Ordos Basin is the result of near-source and short-distance migration and accumulation.

关键词： near-source accumulation tight sandstone gas coal measures unconventional gas geochemistry

Air to fuel:Direct capture of CO_(2)from air and in-situ solar-driven conversion into syngas via Ni_(x)/NaA nanomaterials

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Nano Research 2023年第8期16卷 10899-10912页

作者： Cheng Tian Xianglei liu Chenxi liu Shaoyang li qiyan li Nan Sun Ke Gao Zhixing Jiang Kun Chang Yimin Xuan School of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Thermal Management and Energy Utilization of Aviation Vehicles Ministry of Industry and Information TechnologyNanjing 210016China School of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Ever-increasing CO_(2)emissions and atmospheric concentration mainly due to the burning of traditional fossil fuels have caused severe global warming and climate change *** by nature’s carbon cycle,we propose a novel dual functional catalyst-sorbent to tackle energy and environmental problems simultaneously via direct capture of CO_(2)from air and in-situ solar-driven conversion into clean *** and operationally advantageous,the planned coupling reaction can be carried out in a single reactor without the requirement for an extra trapping *** great CO_(2)capture and conversion performance in an integrated step is shown by the CO_(2)capacity of up to 0.38 mmol·g^(−1)for adsorption from 500 ppm CO_(2)at 25℃and the CO_(2)conversion rate of up to 95%.Importantly,the catalyst-sorbent is constituted of a nonprecious metal Ni catalyst and an inexpensive commercially available CO_(2)sorbent,viz,zeolite ***,this designed dual functional material also exhibits outstanding stability *** work offers a novel pathway of capturing CO_(2)in the air at room temperature and converting it by CH4 into fuel,contributing to the new era of carbon neutrality.

关键词： direct CO_(2)capture solar fuel photothermocatalytic dry reforming

Characteristics of strike-slip inversion structures of the Karatau fault and their petroleum geological significances in the South Turgay Basin,Kazakhstan

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Petroleum Science 2012年第4期9卷 444-454页

作者： Yin Wei Fan Zifei Zheng Junzhang Yin Jiquan Zhang Mingjun Sheng Xiaofeng Guo Jianjun li qiyan lin yaping China University of Geosciences Beijing 100083China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China

The Karatau fault is one of the important strike-slip faults in central Asia,and the South Turgay Basin is located towards its northern *** seismic interpretation indicated that the strikeslip tectonism of the Karatau fault weakened gradually from west to east in the South Turgay *** flower structures developed on the section,and strike-slip faults showed an echelon pattern on planar *** Karatau strike-slip fault affected the South Turgay Basin in two periods：（1） The South Turgay strike-slip pull-apart rift basin formed as a result of regional extensive stress in the Early-Middle Jurassic,characterized by the juxtaposition of horsts and *** formation of horsts provided favorable reservoir spaces for later hydrocarbon accumulation,and different filling stages of grabens controlled different reservoir-forming factors in grabens.（2） Two stages of tectonic inversion occurred in the Late Jurassic and Late Cretaceous and played a crucial role in the final shape of the structure in the South Turgay *** oil and gas migrated to form reservoirs and mainly concentrated in the horsts,graben slopes and in both sides of the strike-slip fault *** the case of the degree of accumulation of petroleum,the factor explaining why horsts are better than grabens is the strike-slip pull-apart of the South Turgay Basin,and the structure inversion of the South Turgay Basin explains why the west graben is better than the east ***,the Karatau strike-slip fault played a very important role in the formation of the South Turgay Basin and its hydrocarbon accumulations.

关键词： South Turgay Basin Karatau fault tectonic style strike-slip inversion petroleum geological significance

Characteristics,Types,and Prospects of Geological Sweet Sections in Giant Continental Shale Oil Provinces in China

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Journal of Earth Science 2022年第5期33卷 1260-1277页

作者： Zhi Yang Caineng Zou Songtao Wu Songqi Pan Xiaoni Wang Haitao liu Wenqi Jiang Jiarui li qiyan li Xiaobing Niu Guohui li Zhenxing Tang Xuguang Guo Dong Huang Qizhao Wei Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China School of Earth and Space Sciences Peking UniversityBeijing100871 School of Energy China University of GeosciencesBeijing 100083China Research Institute of Exploration and Development PetroChina Changqing Oilfield CompanyXi'an 710021China Research Institute of Exploration and Development PetroChina Daqing Oilfield CompanyDaqing 163712China Research Institute of Exploration and Development PetroChina Jilin Oilfield CompanySongyuan 138000China Research Institute of Exploration and Development PetroChina Xinjiang Oilfield CompanyKelamay 834000China Research Institute of Exploration and Development PetroChina Southwest Oil&Gasfield CompanyChengdu 610051China

“Sweet sections”in giant shale oil provinces are preferential fields that primarily support China to increase the reserves and production of continental shale *** on the study of the geological conditions of shale oil in the continental basins in China,it was found that the shale stratum in major oil generation windows generally has higher degrees of oil and gas accumulation,and mostly contains *** generation and reservoir capacities are the two key parameters for evaluating and optimizing favorable shale oil *** evaluation index(volume of shale stratum multiplied by total organic carbon(TOC)multiplied by total porosity)for the giant continental shale oil provinces is also *** is optimized that the Upper Triassic Chang 7 Member in the southcentral Ordos Basin,Lower Cretaceous Qing 1 Member in the Gulong-Changling Sag in the Songliao Basin,Middle-Lower Permian in the Junggar Basin,Da’anzhai Member of the Ziliujing Formation of Lower Jurassic in the central and northern Sichuan Basin,and Paleogene oil-rich sag in the Bohai Bay Basin are the five giant continental shale oil *** word“geological sweet sections”in continental shale oil provinces of China refers to favorable shale intervals which are relatively rich in oil,with superior physical properties,and more easily modified and developed commercially under applicable economic and technological *** evaluation,there are mainly two types of“geological sweet sections”of giant continental shale oil developed onshore in *** type of“geological sweet sections”is generally mudstone with optimal physical properties or a thin tight reservoir,to which the shale oil migrates a short *** are medium-to-high-mature zones with a thin sandy shale stratum in the Chang 7 Member in the Ordos Basin,mixed shale stratum in the mediummature Lucaogou Formation in the Jimsar Sag,and multi-layered mixed Paleogene shale stratum in the Bohai Bay *** other type of“ge

关键词： continental shale oil shale stratum geological sweet section source rock oil micro-nano pore throats laminae lamination free hydrocarbons shale oil revolution petroleum geology

Intrauterine fetal death in triplet gestation caused by feto-fetal transfusion syndrome–a case report

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Forensic Sciences Research 2017年第4期2卷 213-217页

作者： lingling Long Jie Yan qiyan li Ziqi Zhou Haixiao Deng Chudong Wang Ying Zou Jifeng Cai Department of Forensic Science School of Basic Medical ScienceCentral South UniversityChangshaChina Department of Forensic Pathology Hunan Xiangya Judicial Identification CenterChangshaChina

Feto-fetal transfusion syndrome(FFTS)severely affects monochorionic(MC)multiple pregnancies and affects 1 in 1600 pregnancies *** number of increasing disputed obstetrics cases in China is related to unavailability of prompt diagnosis of *** present here a woman with a MC triplet pregnancy with intrauterine fetal death at 33 weeks of gestation due to *** pathological anatomy showed that the MC placenta contained vascular anastomoses,including arterio-arterial anastomosis and arterio-venous *** anastomoses led to unidirectional blood flow with the absence of adequate compensatory counter-transfusion and bi-directional *** encountering such challenging conditions,medical practitioners should discreetly compare the fetuses’characteristics with features of placental blood vessels and consult morphological and pathological ***,they should perform ultrasound examinations,particularly focussing on fetal size differences and the maximum vertical pocket in the diagnosis of FFTS,especially in MC multiple pregnancies with abdominal symptoms.

关键词： Feto-fetal transfusion syndrome monochorionic triplet pregnancy vascular anastomoses intrauterine fetal death obstetrics

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加工流程自动化推理的知识框架语义网络算法

计算机辅助设计与图形学学报 2005年第11期17卷 2537-2544页

作者：郝泳涛李启炎同济大学CAD研究中心上海200092

采用设计模型特征框架建立了一个从几何特征集合到加工操作集合的映射,并采用语义网络模型表示加工操作之间的优先关系,再利用向量和矩阵建立了加工流程排序数学模型.首先,将1个零件的几何特征单位的组成记为U1,U2,…,Un.对于每一个几... 详细信息

采用设计模型特征框架建立了一个从几何特征集合到加工操作集合的映射,并采用语义网络模型表示加工操作之间的优先关系,再利用向量和矩阵建立了加工流程排序数学模型.首先,将1个零件的几何特征单位的组成记为U1,U2,…,Un.对于每一个几何特征单位Ui,用2个向量Fi和Pi分别表示这一几何单位的特征和加工操作.用矩阵PP存储加工流程,用矩阵PO存储每一步加工操作的操作对象;通过这一模型得到1个加工流程.这一流程不但是可行的,而且可通过更换刀头次数的最小化达到经济的目的.

关键词：加工特征加工操作加工流程设计模型加工操作优先关系语义网络加工流程排序数学模型

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网络化制造ASP平台体系结构

计算机工程 2005年第13期31卷 189-191,214页

作者：李红柳先辉李启炎同济大学CAD中心上海200092

针对我国制造业信息化程度较低的现状,通过对ASP模式的研究分析,该文提出了构架网络化制造ASP平台的系统框架的一个方案,并详细研究了平台的体系结构和关键技术:基于WebService的动态插件,信息总线技术和数据交换标准。最后阐述了平台... 详细信息

针对我国制造业信息化程度较低的现状,通过对ASP模式的研究分析,该文提出了构架网络化制造ASP平台的系统框架的一个方案,并详细研究了平台的体系结构和关键技术:基于WebService的动态插件,信息总线技术和数据交换标准。最后阐述了平台的特点。

关键词：应用服务提供商 ASP模式 Web service 信息总线技术数据交换标准化

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基于元数据的对象管理的Web框架

计算机工程 2005年第5期31卷 105-108页

作者：高正光李旸李启炎同济大学CAD研究中心上海200092

提出了一种基于元数据的对象管理的Web框架(OMF),OMF针对目前流行的Web框架(如Struts等)缺少存储、一致性差等问题,充分运用JDO、Servlet、JSP等标准,使用XML定义对象元数据,辅以面向域的代码生成技术,实现了对象的持久、事务、表现视... 详细信息

提出了一种基于元数据的对象管理的Web框架(OMF),OMF针对目前流行的Web框架(如Struts等)缺少存储、一致性差等问题,充分运用JDO、Servlet、JSP等标准,使用XML定义对象元数据,辅以面向域的代码生成技术,实现了对象的持久、事务、表现视图等的一致性管理,并同时集成了灵活的基于角色和ACL的访问控制机制。通过该框架,能实现快速创建Web应用系统,极大地提高开发效率。

关键词： Web框架元数据 XML/JDO 代码生成技术访问控制

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轮廓平移无跳刀连接刀路环树优化算法

计算机辅助设计与图形学学报 2005年第11期17卷 2530-2536页

作者：郝泳涛蒋莉莉李启炎同济大学CAD研究中心上海200092

提出一个无跳刀的轮廓平移刀路轨迹优化算法.根据刀路环之间父环和子环关系,提出“刀路环树”的概念,将加工刀路的一次环切定义为一个“刀路环向量”,并将刀路环的各个属性定义为刀路环向量的分量.根据无跳刀轨迹的要求,针对刀路环树的... 详细信息

提出一个无跳刀的轮廓平移刀路轨迹优化算法.根据刀路环之间父环和子环关系,提出“刀路环树”的概念,将加工刀路的一次环切定义为一个“刀路环向量”,并将刀路环的各个属性定义为刀路环向量的分量.根据无跳刀轨迹的要求,针对刀路环树的各个刀路环向量进行遍历,以获得了一个无跳刀的轮廓平移刀路轨迹算法,并通过与其他算法比较,证明该算法无跳刀、无重复切削,并且可以自动执行.

关键词：轮廓平移切削刀路环树刀路环向量优化算法