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High Purity Mullite-Corundum Thermal Insulating Firebricks

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International Journal of Minerals,Metallurgy and Materials 1999年第4期13卷 237-241页

作者： Wen Ni Fengmei Liu(resource Engineering school, university’ of Sctence and Technology beijing beijing. 100083, china) resource Engineering school University of Science and Technology Beijing Beijing 100083 China

Laboratory and industrial experiments were carried out to study the possibility of producing high purity purity mullite-corundumthermal insulating firebricks. The results show that by using industrial alumina. natuual powder power, coal gangues and a small amountof additives. high purity mullite-corundum thermal insulating firebrieks can be produced The service. temperature of these brick can beup to 1780 with low. thermal conductivity' and good thermal shock resistance

关键词： mullite corundum thermal insulating firebricks

Layer structure,petroleum accumulation system and characteristic of subtle reservoir of continental basins in eastern china:Taking Jiyang depression for example

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Science china Earth Sciences 2008年第S2期51卷 146-155页

作者： XU HuaiMin1,XU ZhaoHui1,ZHANG ShanWen2,WANG ZhiGao2 & WANG YongShi2 1 Faculty of resource and information Technology,china university of petroleum,beijing 102249,china 2 Shengli Oil Field Ltd. Co.,SINOPEC,Dongying 257015,china 1. Faculty of resource and information Technology China University of Petroleum Beijing 102249 China 2. Shengli Oil Field Ltd. Co. SINOPEC Dongying 257015 China

The concept and division method for petroleum accumulation system,based on layer structure,are presented according to characteristics of layer structure and reservoirs. The petroleum accumulation system of Jiyang depression can be divided into four levels,namely petroleum accumulation system combination,petroleum accumulation system,oil-gas reservoir combination and reservoir. The petro-leum accumulation system combination includes three types of genetic pattern: other-source bur-ied-ridge accumulation system combination in pre-Paleogene,medium-deep layer self-source accu-mulation system combination in Paleogene,and shallow layer other-source accumulation system combination in Neogene. This paper also describes the reservoir types and their distribution charac-teristics of different petroleum accumulation system combinations and their interior units.

关键词： accumulation system Jiyang depression basin structure reservoir genetic pattern

Response of remotely sensed Normalized Difference Water Deviation Index to the 2006 Drought of eastern Sichuan Basin

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Science china Earth Sciences 2008年第5期51卷 748-758页

作者： ZHANG WenJiang1, LU QiFeng2, GAO ZhiQiang3 & PENG Jian4 1 school of Water resource and Hydropower, Sichuan university, Chengdu 610065, china 2 National Satellite Meteorological Center, china Meteorological Administration, beijing 100081, china 3 Institute of Geographic Sciences and Natural resources Research, Chinese Academy of Sciences, beijing 100101, china 4 school of Environmental Sciences, Peking university, beijing 100871, china 1. school of Water resource and Hydropower Sichuan University Chengdu 610065 China 2. National Statellite Meteorological Center China Meteorological Administration Beijing 100081 China 3. Institute of Geographic Sciences and Natural resources Research Chinese Academy of Sciences Beijing 100101 China 4. school of Environmental Sciences Peking University Beijing 100871 China

One of the most serious droughts in last century occurred in eastern Sichuan Basin in the summer of 2006 (hereinafter called the Drought). The response of Moderate Resolution Imaging Spectroradiometer (MODIS, boarding on NASA satellites of Terra and Aqua) to the Drought was analyzed in order to reach one practicable monitoring solution for regional soil moisture. Temporal process and spatial extension of the Drought were firstly estimated with ground meteorological and hydrological observations. Then, for the whole region of Sichuan and Chongqing, the remotely sensed Normalized Difference Water In- dex (NDWI) for the summers of 2001―2006 were calculated based on 8-day composite MODIS products, which were further used to construct a new water index (Normalized Difference Water Deviation Index, NDWDI) to examine the sensitivity of remote sensing in the Drought. The study showed that the NDWDI is more sensitive to regional drought than other absolute-soil-moisture-based indices. With the new index, the study extracted the spatial-temporal characteristics of the 2006 Drought, and explored its developing and withdrawing processes, which agreed with related statistics. Compared with ground method of drought observation, the NDWDI-based remote sensing solution of this paper is more pref- erable and practicable in that the local soil properties of water consumption and supply are implicitly taken into account, and the spatial representativity limit of ground observation is circumvented to a degree as satellite remotely senses the earth surface in a way of two-dimensional pixel matrix. So, the NDWDI-based method can be used to monitor regional soil water stress situation more practically and efficiently.

关键词： Sichuan Basin drought Normalized Difference Water Deviation Index response of remote sensing regional scale

Theoretical analysis and experiment of micromechanics and mechanics-optics coupling of distributed optic-fiber crack sensing

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中国科学：技术科学英文版 2011年第S1期54卷 185-191页

作者： LIU HaoWu 1,2,CHEN Jiang 2,SUN Man 3 & DING Rui 2 1 State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan university,Chengdu 610065,china 2 school of Water resource Hydropower,Sichuan university,Chengdu 610065,china 3.school Electrical Engineering and information,Sichuan university,Chengdu 610065,china Sichuan Univ State Key Lab Hydraul & Mt River Engn Chengdu 610065 Peoples R China Sichuan Univ Sch Water Resource Hydropower Chengdu 610065 Peoples R China Sichuan Univ Sch Elect Engn & Informat Chengdu 610065 Peoples R China

The micromechanical behaviors and mechanics-optics coupling effects of optic-fiber-concrete complex in the distributed optic-fiber sensing concrete-crack technology,which was used in health monitoring of Wu Gorge Bridge on Yangtze River and a large dam successfully,have been investigated.A micromechanical theoretical analysis method and micromechanical frictional contact bi-interface model,as well as a modified optical theoretical analysis method of the mechanics-optics coupling effects are presented.A series of verification experiments,including mechanical experiments and mechanics-optics coupling experiments,have been *** results of micromechanical theoretical analysis and the analysis of the modified theory of mechanics-optics coupling along with mechanical and optical experimental data are shown to be in close *** the micromechanical theory and the modified theory of mechanics-optics coupling with their analysis methods can not only enhance credibility of this novel distributed sensing technology but also provide a way to understand its sensing mechanism and optimize its technical details and system.

关键词： optic-fiber sensing mechanics-optics coupling micromechanics health monitoring concrete structure crack detection

An analysis of the types and distribution characteristics of natural gas reservoirs in china

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petroleum Science 2009年第1期6卷 38-42页

作者： Xu Zhangyou Yue Dali Wu Shenghe Zhang Xiaoyu Chen Ce Ni Yuqiang school of resources and information Technology China University of Petroleum Beijing 102249 China State Key Laboratory of petroleum resource and Prospecting China University of Petroleum Beijing 102249 China

The natural gas reservoir beds of different areas in china can be divided into three kinds, clastic natural gas reservoir bed, carbonate natural gas reservoir bed and special natural gas reservoir bed. They have different combination patterns controlled by deposition, diagenesis and tectonism. Our analysis indicates that the natural gas reservoirs are mainly distributed in the Precambrian, Palaeozoic, Mesozoic, and Tertiary-Quaternary. Craton basin, foreland basin and intracontinental rift basin which contain most of natural gas in china have special geological features and favorable accumulation conditions, and will be important exploration areas in the future.

关键词： Natural gas clastic reservoir carbonate reservoir gas-bearing basin china

Accelerating Oil and Gas Exploration in Western china by Studies of Formations of Hydrocarbon Accumulations in Superimposed Basins—A Preface

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Acta Geologica Sinica(English Edition) 2010年第5期 5-6页

作者： PANG Xiongqi~(1,2) 1 State Key Laboratory of petroleum resource and Prospecting,china university of petroleum,beijing 102249 2 Basin and Reservoir Research Center,china university of petroleum,beijing 102249

The superimposed basins in the western region of china are a hot research topic for earth scientists home and abroad for their vast area and rich oil and gas *** complex geological conditions and resultant great exploration difficulties have received much attention of the *** issue presents the advances of several scholars in their long-term research on the mechanisms of oil and gas accumulation and the patterns of oil and gas *** studies are part of the National 973 Project entitled "Mechanism of Oil and Gas Accumulation and

关键词： A Preface Accelerating Oil and Gas Exploration in Western china by Studies of Formations of Hydrocarbon Accumulations in Superimposed Basins

Research and application of water jet technology in well completion and stimulation in china

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petroleum Science 2010年第2期7卷 239-244页

作者： Li Gensheng Huang Zhongwei Tian Shouceng Shen Zhonghou State Key Laboratory of petroleum resource and Prospecting china university of petroleum Beijing 102249 China

In recent years, rapid progress in the use of high pressure water jets （HPWJ） has been made in oil and gas well drilling, completion, and stimulation; and good results have been achieved in field applications. Advances in technologies and developments of well completion and stimulation with hydrajet are reviewed in this paper. Experiments were conducted to study the characteristics of abrasive water jetting and to optimize jet parameters, which can provide methods for the well completion and hydrajet fracturing. Deep-penetrating hydrajet perforating can create a 2-3 m clean hole with a diameter of 20-35 mm. Multilayer hydrajet fracturing is a process whereby multiple layers are stimulated in a single run without using mechanical packers, thereby reducing operation procedure and risk. Multilateral radial wells can be drilled using hydraulic jetting up to 100 m in length. The technique to remove sand particles and plugs with rotating self-resonating cavitating water jets in horizontal wellbores has been developed and oilfield-tested, which shows promising, cost effective prospects.

关键词： Water jet abrasive jet well completion perforation stimulation horizontal drilling with hydrajet

resource scheduling scheme with QoS support in two-hop relay-enhanced OFDMA systems

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The Journal of china Universities of Posts and Telecommunications 2010年第4期17卷 26-30页

作者： LIU Wei ,JI Hong,LI Ting school of information and Telecommunication Engineering,beijing university of Posts and Telecommunications,beijing 100876,china [a] school of information Telecommunication Engineering Beijing University of Posts Telecommunications Beijing 100876 China

As the system performance is obviously improved by introducing the concept of relay into the traditional orthogonal frequency division multiple access （OFDMA） systems, resource scheduling in relay-enhanced OFDMA systems is worthy of being studied carefully. To solve the optimization problem of achieving the maximum throughput while satisfying the quality of service （QoS） and guaranteeing the fairness of users, a novel resource scheduling scheme with QoS support for the downlink of two-hop relay-enhanced OFDMA systems is proposed. The proposed scheme, which is considered both in the first time sub-slot between direct link users and relay stations, and the second time sub-slot among relay link users, takes QoS support into consideration, as well as the system throughput and the fairness for users. Simulation results show that the proposed scheme has good performance in maximizing system throughput and guaranteeing the performance in the service delay and the data loss rate.

关键词： relay OFDMA QoS resource scheduling

The distribution rule and seepage effect of the fractures in the ultra-low permeability sandstone reservoir in east Gansu Province,Ordos Basin

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Science china Earth Sciences 2008年第S2期51卷 44-52页

作者： ZENG LianBo1,GAO ChunYu2,QI JiaFu1,WANG YongKang2,LI Liang2 & QU XueFeng2 1 State Key Laboratory of petroleum resource and Prospecting,china university of petroleum,beijing 102249,china 2 Changqing Oilfield Branch,Petrochina,Xi’an 163517,china china Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China Petrochina Changqing Oilfield Branch Xian 163517 Peoples R China

To study the impact of the fractures on development in the ultra-low permeability sandstone reservoir of the Yangchang Formation of the Upper Triassic in the Ordos Basin,data on outcrops,cores,slices,well logging and experiments are utilized to analyze the cause of the formation of the fractures,their distribution rules and the control factors and discuss the seepage flow effect of the fractures. In the studied area developed chiefly high-angle tectonic fractures and horizontal bedding fractures,inter-granular fractures and grain boundary fractures as well. Grain boundary fractures and intragranular fractures serve as vital channels linking intragranular pores and intergranular solution pores in the reservoir matrix,thus providing a good connectivity between the pores in the ultra-low perme-ability sandstone reservoir. The formation of fractures and their distribution are influenced by such external and internal factors as the palaeo-tectonic stress field,the reservoir lithological character,the thickness of the rock layer and the anisotropy of a layer. The present-day stress field influences the preservative state of fractures and their seepage flow effect. Under the tec-tonic effect of both the Yanshan and Himalayan periods,in this region four sets of fractures are distributed,respectively assuming the NE-SW,NW-SE,nearly E-W and nearly S-N orientations,but,due to the effect of the rock anisotropy of the rock formation,in some part of it two groups of nearly orthogonal fractures are chiefly distributed. Under the effect of the present-day stress field,the fractures that assume the NE-SW direction have a good connectivity,big apertures,a high permeability and a minimum starting pressure,all of which are main advantages of the seepage fractures in this region. With the development of oilfields,the permeability of the fractures of dif-ferent directions will have a dynamic change.

关键词： fracture genetic type distribution characteristic seepage flow effect ultra-low permeability sandstone reservoir Ordos Basin