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川西新场地区须二段深层致密砂岩储层类型与差异控储作用

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天然气地球科学 2024年第7期35卷 1136-1149页

作者：李朋威胡宗全刘忠群徐士林刘振峰王爱刘君龙金武军中国石化石油勘探开发研究院北京100083

随着油气勘探向深部拓展,深层致密砂岩气已成为当前重要的勘探领域,但其储层非均质性强,相对优质储层分布规律不清为致密砂岩气的规模有效开发带来较大困难。以川西新场地区须二段深层气藏为例,以岩心观察、薄片鉴定、物性测试等分析测... 详细信息

随着油气勘探向深部拓展,深层致密砂岩气已成为当前重要的勘探领域,但其储层非均质性强,相对优质储层分布规律不清为致密砂岩气的规模有效开发带来较大困难。以川西新场地区须二段深层气藏为例,以岩心观察、薄片鉴定、物性测试等分析测试为手段,系统开展了深层致密砂岩储层的岩石学、储集性能、成岩作用与构造破裂作用研究,进一步明确了相对优质储层类型及差异控储作用。研究表明:新场地区须二段致密砂岩储层可划分为极致密储层、裂缝型、孔隙型和孔隙—裂缝型4种储层类型,其中孔隙型、孔隙—裂缝型为有效储层类型。致密砂岩储层的形成与沉积环境、粒度、成岩及构造破裂作用关系密切,不同类型储层之间差异控储作用明显。总体上,沉积是基础、差异成岩与构造破裂作用是关键。其中,极致密储层可形成于不同的沉积环境,但相对细粒及富岩屑类砂岩为其形成的物质基础,强烈的压实与胶结作用是其孔隙不发育的主要因素,裂缝型储层则是极致密储层的基础上叠加了构造破裂作用;孔隙型储层主要形成于相对高能水下分流河道、河口坝,岩性以富含长石的中粗粒砂岩为主,溶蚀与绿泥石衬垫胶结作用是其孔隙形成的关键,相控作用明显,而孔隙—裂缝型储层则是在孔隙型储层基础叠加了构造破裂作用,具有“相断”双控性。

关键词：深层致密砂岩气致密砂岩储层类型须二段差异控储作用新场地区

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Geological characteristics and models of fault-foldfracture body in deep tight sandstone of the second member of Upper Triassic Xujiahe Formation in Xinchang structural belt of Sichuan Basin,SW China

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Petroleum Exploration and Development 2023年第3期50卷 603-614页

作者： liu Junlong liu zhongqun liu Zhenfeng liu Yali SHEN Baojian XIAO Kaihua BI Youyi WANG Xiaowen WANG Ail FAN Lingxiao LI Jitongl Sinopec Petroleum Exploration&Production Research Institute Beijing 100083China Sinopec Southwest Oil&Gas Company Chengdu 610081China

In the second member of the Upper Triassic Xujiahe Formation(T_(3)x_(2))in the Xinchang area,western Sichuan Basin,only a low percent of reserves has been recovered,and the geological model of gas reservoir sweet spot remains *** on a large number of core,field outcrop,test and logging-seismic data,the T_(3)x_(2) gas reservoir in the Xinchang area is *** concept of fault-fold-fracture body(FFFB)is proposed,and its types are *** main factors controlling fracture development are identified,and the geological models of FFFB are *** refers to faults,folds and associated fractures *** to the characteristics and genesis,FFFBs can be divided into three types:fault-fracture body,fold-fracture body,and fault-fold *** the hanging wall of the fault,the closer to the fault,the more developed the effective fractures;the greater the fold amplitude and the closer to the fold hinge plane,the more developed the effective *** types of geological models of FFFB are established:fault-fold fracture,and matrix storage and *** former can be divided into two subtypes:network fracture,and single structural fracture,and the later can be divided into three subtypes:bedding fracture,low permeability pore,and extremely low permeability *** process for evaluating favorable FFFB zones was formed to define favorable development targets and support the well deployment for purpose of high *** study results provide a reference for the exploration and development of deep tight sandstone oil and gas reservoirs in China.

关键词： fault-fold-fracture body fracture control factor genetic characteristics geological model deep layer tight sandstone Xinchang structural belt Upper Triassic Xujiahe Formation Sichuan Basin

Micro/nanoelectrode-based electrochemical methodology for single cell and organelle analysis

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Nano Research 2024年第1期17卷 196-206页

作者： Chuchu Xu De Yang Yuchan Wang Ruolin liu Fan Wang zhongqun Tian Keke Hu Department of Chemistry College of Chemistry&Chemical EngineeringXiamen UniversityXiamen 361005China

Cells are the basic unit of *** analysis of single cells/organelles is essential for uncovering the molecular mechanisms of physiological and pathological processes that are difficult to elucidate on a larger *** paper provides an overview of the commonly used fabrication methods for micro/nanoelectrodes applied in the investigations of single cells/organelles as well as the corresponding electrochemical measurements over the last four years including extracellular measurement,combination of extra and intracellular measurement,intracellular reactive oxygen species and reactive nitrogen species(ROS/RNS)measurement,and isolated organelles measurement.

关键词： single cell/organelle micro/nanoelectrode electrochemical measurement chemical transmitters

Characterization of favorable lithofacies in tight sandstone reservoirs and its significance for gas exploration and exploitation: A case study of the 2nd Member of Triassic Xujiahe Formation in the Xinchang area, Sichuan Basin

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Petroleum Exploration and Development 2020年第6期47卷 1194-1205页

作者： liu Junlong liu zhongqun XIAO Kaihua HUANG Yanqing JIN Wujun Sinopec Exploration&Production Research Institute Beijing 100083China

By using core,logging curves,and experiment data,favorable lithofacies types in the 2 nd Member of Triassic Xujiahe Formation in the Xinchang area,Sichuan Basin were classified,standard of the favorable lithofacies was established,planar distribution regularities of the favorable lithofacies were identified,and forming mechanisms of the favorable lithofacies and their control effect on production were examined.(1)The 2 nd Member of Xujiahe Formation has twelve types of lithofacies,among which multiple layer medium-coarse grain sandstone lithofacies,parallel bedding medium-coarse grain sandstone lithofacies,massive bedding medium-coarse grain sandstone lithofacies,inclined bedding medium-coarse grain sandstone lithofacies,and charcoal-bearing medium-coarse grain sandstone lithofacies with better physical properties and higher gas content are favorable lithofacies;they feature low gamma,low neutron porosity,low resistivity,and high acoustic travel time on logging curves.(2)The sedimentary process controls spatial distribution of sand bodies which are the material basis of the favorable lithofacies;post diagenetic fluids would differentially reconstruct the favorable lithofacies;tectonic activities and abnormal formation pressure made strata slide along the weakness plane,giving rise to fractures in different types of rocks,which can enhance the reservoir permeability significantly.(3)The development degree of favorable lithofacies is a major factor affecting stable production of gas well.

关键词： tight sandstone reservoir favorable lithofacies reservoir characterization Triassic Xujiahe Formation Xinchang area Sichuan Basin

Analysis of lithofacies and evaluation of effective reservoirs of member 2 of Xujiahe Formation in the Xinchang area in Western Sichuan

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Petroleum Research 2020年第3期5卷 244-253页

作者： Yanqing Huang zhongqun liu Pengwei Li Junlong liu Changzhen Liao Shilin Xu Sinopec Petroleum Exploration and Development Research Institute Beijing100083China

In the Xinchang area in western Sichuan Basin,a total of 121.12 billion cubic meters of proved reserves of natural gas are discovered in Member 2 of Xujiahe Formation,but only 7.739 billion cubic meters of proved reserves of natural gas are *** main reason is that sandstones in Member 2 of Xujiahe Formation in the Xinchang area are generally tight,with strong heterogeneity,only intervals with relatively good physical properties have a certain production capacity;therefore,it is very necessary and important to evaluate effective reservoirs in Member 2 of Xujiahe *** analysis of cores,with consideration of color,sedimentary texture and grain size,lithofacies of Member 2 of Xujiahe Formation in the Xinchang area can be divided into 12 *** to data of physical properties and thin section analysis,it can be concluded that the favorable lithofacies in the upper submember of Member 2 of Xujiahe Formation are the massive medium-coarse sandstone,the medium-coarse sandstone with cross bedding,and the medium-coarse sandstone with carbonaceous *** the basis of electrical characteristics,well-logging interpretation standards for favorable lithofacies are established,in addition,favorable lithofacies and effective reservoir in the Xinchang area are determined,and distribution of favorable lithofacies(effective reservoir)is identified,which lay a solid foundation for next deployment of appraisal well and development of effective reserves.

关键词： Medium-coarse sandstone Lithofacies Effective reservoir Member 2 of xujiahe formation Xinchang area Sichuan

Synthesis and High Electrocatalytic Performance of Hexagram Shaped Gold Particles Having an Open Surface Structure with Kinks

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Nano Research 2011年第6期4卷 612-622页

作者： Qingning Jiang Zhiyuan Jiang Lei Zhang Haixin Lin Ning Yang Huan Li Deyu liu Zhaoxiong Xie zhongqun Tian State Key Laboratory for Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China

Hexagram shaped gold particles and their analogues enclosed by high index facets with kinks have been successfully synthesized by reducing HAuCl4 with ascorbic acid （AA） in the presence of poly（diallyldimethylammonium chloride） at room temperature. By using electron microscopy, the surfaces of the hexagram shaped Au particle were found to be {541} planes, which contain high-density steps and kinks. In addition, it was found that hexagonal shield-like and other kind of particles present in the product were analogues of the hexagram shaped Au particles structure, in that they had the same surface structure. In order to confirm the surface structure of all the prepared particles, surface structure sensitive underpotential deposition of Pb was carried out, and the cyclic voltammetric profile was in accordance with the proposed {541} surface. Finally, structure-property relationships of the Au hexagrams were experimentally analyzed by employing the electrocatalytic oxidation of AA as a probe reaction. The electrocatalytic reactions of gold cubes with low-index {100} facets and gold trioctahedra with {221} facets were studied as references. The experimental results showed that the hexagram shaped Au particles and their analogues with exposed {541} facets have the highest catalytic activity among the three kinds of gold particles, owing to the high density of kink atoms. This study should motivate us to further explore methods for the preparation of other well-defined polyhedral metal nanocrystals enclosed by high index surfaces.

关键词： Hexagram shaped gold particles surface structure high index facets with kinks structure-property relationship electrocatalysis crystal growth

General synthesis of high-performing magneto-conjugated polymer core-shell nanoparticles for multifunctional theranostics

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Nano Research 2017年第2期10卷 704-717页

作者： Hao Yan Lingyun Zhao Wenting Shang zhongqun liu Wensheng Xie Cai Qiang Zhiyuan Xiong Ranran Zhang Baohua Li Xiaodan Sun Feiyu Kang State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Key Laboratory of Advanced Materials of Ministry of Education of China Tsinghua University Beijing 100084 China Engineering Laboratory for Functionalized Carbon Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China Key Laboratory of Molecular Imaging Institute of Automation Chinese Academy of Sciences Beijing 100190 China

Recently, increasing attention has been paid to magneto-conjugated polymer core-shell nanoparticles （NPs） as theranostic platforms. However, the utilization of surfactants and extra oxidizing agents with potential toxicity in synthesis, the lack of general methods for the controlled synthesis of various kinds of magnetic NP （MNP）@conjugated polymer NPs, and the difficulty of obtaining balanced magneto-optical properties have greatly limited the applications of magneto-conjugated polymers in theranostics. We developed an in situ surface polymerization method free of extra surfactants and oxidizing agents to synthesize MNP@polypyrrole （PPy） NPs with balanced, prominent magneto-optical properties. MNP@PPy NPs with an adjustable size, different shapes, and a controlled shell thickness were obtained using this method. The method was extended to synthesize other MNP-conjugated polymer core-shell NPs, such as MNP@polyaniline and MNP@poly（3,4-ethylenedioxythiophene）：poly（4- styrenesulfonate）（PEDOT：PSS）. We discuss the formation mechanism of the proposed method according to our experimental results. Finally, using the optical and magnetic properties of the obtained MNP@PEDOT：PSS NPs, in vivo multimodal imaging-guided hyperthermia was induced in mice, achieving an excellent tumor-ablation therapeutic effect. Our work is beneficial for extending the application of MNP-conjugated polymer core-shell NPs in the biomedical field.

关键词： iron oxide polypyrrole photothermal magnetic hyperthermal poly(3 4-ethylenedioxythiophene):poly(4-styrenesulfonate)(PEDOT:PSS)

鄂尔多斯盆地大牛地致密砂岩气田水平井开发气藏工程优化技术

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石油与天然气地质 2016年第2期37卷 261-266页

作者：刘忠群中国石化华北油气分公司勘探开发研究院河南郑州450006

大牛地气田属致密砂岩气田,剩余未动用储量品位差、有效厚度薄、纵向叠合程度低,采用水平井开发效果较好,但国内没有成熟的开发技术和经验。因此,优化研究水平井开发技术政策,完善气藏工程配套技术显得尤为重要。为此,基于经验公式、动... 详细信息

大牛地气田属致密砂岩气田,剩余未动用储量品位差、有效厚度薄、纵向叠合程度低,采用水平井开发效果较好,但国内没有成熟的开发技术和经验。因此,优化研究水平井开发技术政策,完善气藏工程配套技术显得尤为重要。为此,基于经验公式、动态分析、数值模拟、经济评价等方法,对水平井整体开发动用条件下的产能评价、单井设计、井网井距等开发技术政策进行了优化研究,明确了层系划分原则,确定了多种产能评价方法,明确了气井配产比例为无阻流量的1/5-1/3,水平段长1 000-1 200 m,轨迹应垂直于最大主应力方向并尽量位于储层中部,压裂缝设计应参照定量计算模型,井网采用排状交错井网,井距800-1 200 m,废弃地层压力8 MPa,采收率40%。形成的气藏工程优化技术,已应用于大牛地气田水平井整体开发方案中,为方案成功实施提供了技术保障。

关键词：开发技术政策低渗透气藏工程水平井大牛地气田鄂尔多斯盆地

Impact of Modal Parameters on Milling Process Chatter Stability Lobes

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武汉理工大学学报 2006年第S1期28卷 190-195页

作者： LI zhongqun,liu Qiang (School of Mechanical Engineering and Automation,BeiHang University,Beijing 100083,China) School of Mechanical Engineering and Automation BeiHang UniversityBeijing 100083China

Modals of the machine/tool and machine/part system are the principal factors affecting the stability of a milling process. Based on the modeling of chatter stability of milling process,the influence of modal parameters on chatter stability lobes independently or jointly has been analyzed by simulation. Peak-to-valley specific value,lobe coefficient and the corresponding calculation formula have been put forward. General laws and steps of modal simplification for multimodality system have been summarized.

关键词： milling process chatter stability lobes dynamic stiffness modal parameter