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Ti Coating on Magnesium Alloy by Arc-Added Glow Discharge Plasma Penetrating Technique

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材料热处理学报 2004年第5B期25卷 684-687页

作者： CUICai-e MIAOQiang PANJun-de ZHANGPing-ze ZHANGGao-hui researchinstituteofSurfaceEngineering TaiyuanUniversityofTechnologyTaiyuan030024China researchinstituteofSurfaceEngineering TaiyuanUniversityofTechnologyTaiyuan030024China／／No.2ResearchInstituteofChinaElectronicsTechnologyGroupCorporationTaiyuan030024China

Arc-added glow discharge plasma penetrating technique is a new surface coating method. With the help of vacuum arc discharge, a cold cathode arc source continually emits ion beams of coating elements with high currency density and high ionizing ratio. As the ion bombard and diffusion working on, the surface of the parts form deposited layer, penetrated layer and hybrid layer. Under lab condition, a commercial magnesium alloy Az91 had been coated with Ti film layer with the aim of improving its’ anti-corrosion performance. This paper mainly summarized our studies on the testing and analyzing of the coating layer. The composition and microstructure of the coating layer had been analyzed by means of X-ray diffraction (XRD) and glow discharge spectrum (GDS), and the surface appearance had been surveyed by scanning electronic microscope (SEM). The adhesion strength between film and matrix had been evaluated by experiments of sticking-tearing. The results indicated that the coated layer on magnesium alloy were homogeneous, dense and robustly adhered.

关键词：钛涂层镁合金电弧辉光放电等离子穿透粘附强度

THE CHARACTERISTICS OF REMOTE SENSING TECTONICS IN QIANGTANG-CHANGDU MASSIF, QINGHAI-TIBET PLATEAU

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地学前缘 2000年第S1期7卷 435-437页

作者： Zhao Zhengzhang 1,Ye Hefei 2,Li Yongtie 2(1 china National Petroleum corporation, Beijing 100724,china 2 research institute of Petroleum Exploration and Development, CNPC, Beijing 100083,china)

The northern Tibet plateau is the core of generalized Qinghai—Tibet plateau. The main part of Qiangtang—Changdu massif, which is 45×10 4km 2 and more than 5000m in altitude, conforms to the northern Tibet plateau in area.1 The shape features and boundary conditions of Qiangtang—Changdu massif\;(1) Qiangtang—Changdu massif shows huge flat\|lying “S” area In MSS7 mosaic image, Qiangtang—Changdu massif extends in west and east, and appears a long\|elliptic huge block composed of feathered and dendritic textures.. Noticeably, there are two similar texture “tails" in the west and east ends of the massif. The western tail turns and constringes to the north, and eastern tail to the south. Thereby, the massif shows huge “S" area. According to the regional analysis, the eastern tail locates between Shaluli Mt.\|Taniantaweng Mt. and Mujiang River, and western part through Bangong\|Co connects with Pamirs along Karakoram Mt. In regional tectonics, the massif locates between Lazhulong\|Xijinwulan\|Co\|Jinshajiang River and Bangong\|Co\|Dongqiao\|Nujiang River fault belts.

关键词： Qiangtang—Changdu massif remote sensing boundary condition circular structure deformin g features mechanic characteristic dynamics

Lower Boundary of the Marine Pleistocene in Northern Shelf of the South china Sea

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Acta Geologica Sinica(English Edition) 1991年第4期65卷 427-439,460页

作者： Wang Pinxian Xia Lunyu Wang Lujiang Cheng Xinrong Department of Marine Geology, Tongji University, Shanghai 200092,china research institute, Nanhai West Oil corporation, Zhanjiang, Guangdong 524057, china 1 1) Department of Marine Geology Tongji University Shanghai 200092 China 2 2) research institute Nanhai West Oil Corporation Zhanjiang Guangdong 524057 China

A marine stratigraphic sequence across the Pliocene / Pleistocene boundary has been found in the north-ern continental shelf of the South china Sea. The marine Quaternary deposits in the Yinggehai Basin may ex-ceed 2,000 m in thickness, probably providing the best section for studying the lower boundary of the marinePleistocene in South china. The vertical succession with planktonic foraminifers and nannofossils revealed inboreholes in the basin has been well correlated with that in the international stratotype section of thePliocene / Pleistocene boundary at Vrica, Italy, resulting in the acquirement of a biostratigraphic boundary at1.64 Ma. This boundary, however, does not coincide with any prominent lithological palaeoenvironmentalchanges in the study area and can hardly be used in geological practice. There are, in contrast, significantchanges at the level of LAD of Globorotalia multicamerata sensu lato located below the above-mentionedboundary. The percentage of planktonic foraminifers in the total population and preservation of foraminiferaltests display great changes at this level corresponding to a clear onlap on the seismic profiles and indicating adepositional hiatus at ca. 2.0-2.5 Ma. Since the level can be widely traced in the Pearl River Mouth Basin andthe Beibu Gulf Basin and well corresponds with the marked depositional environmental changes recorded inthe west Pacific and other regions, it is recommended that the Plio / Pleistocene boundary be drawn at the levelof Gr. multicamerata sensu lato LAD, roughly concurrent with the Gauss / Matuyama turn.

关键词： Lower Boundary of the Marine Pleistocene in Northern Shelf of the South china Sea

An Experimental Investigation of Hydraulic Jet Fracturing Technology with Coiled Tubing

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石油机械 2012年第3期40卷 103-108页

作者： He Huiqun Hu Qiangfa Zhu Feng(Drilling research institute of china National Petroleum corporation)

To solve the increasingly serious problem of "many wells,but low productivity"in china,the hydraulic jetting fracturing technology with coiled tubing,as a new measure for effectively improving the production rate of individual well and enhancing oil and gas recovery,merits much attention *** the basis of study of the hydraulic jetting fracturing mechanism with coiled tubing and numerical simulation of pressure distribution inside the pores,the mechanism of pressure rise inside the pores caused by the pressure boost action within the jetting pore and the hydraulic isolation action is examined,and the influence of main parameters on the pressure distribution inside the pores is analyzed.3 kinds of operating methods of hydraulic jetting fracturing with coiled tubing are raised with the tubular diameter of coiled tubing as an important feature *** to the experimental study,the fracturing mechanism and computational results of numerical simulation are both *** is considered that under the same pressure drop of jet nozzle,the pressure inside the pores increases with the confining pressure nearly at a linear *** the vertical depth of the borehole is rather big and the rupture pressure of the formation is higher,it is recommended to use higher pressure drop of jet nozzle for achieving better pressure boost and hydraulic isolation *** the hydraulic jetting fracturing with coiled tubing,the coiled tubing with tubular diameter not less than 50.8 mm(2 in.) is usually used.

关键词：摘要编辑部编辑工作读者

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轮南古潜山岩溶缝洞系统定量描述

新疆石油地质 2003年第6期24卷 546-548页

作者：王鹏刘兴晓中国石油塔里木油田分公司物探研究院新疆库尔勒841001

从地震反射振幅入手,以轮古15井区为例,对岩溶储集层进行量化标定,研究不同类型储集层在地震剖面上的反射振幅特征,进而研究碳酸盐岩缝洞型储集层在空间上的展布规模、连通性并定量计算了碳酸盐岩储集空间的大小。运用该套技术思路与方... 详细信息

从地震反射振幅入手,以轮古15井区为例,对岩溶储集层进行量化标定,研究不同类型储集层在地震剖面上的反射振幅特征,进而研究碳酸盐岩缝洞型储集层在空间上的展布规模、连通性并定量计算了碳酸盐岩储集空间的大小。运用该套技术思路与方法,预测了轮古15井区缝洞系统的分布规律、储集空间大小,提高了钻探成功率,并在碳酸盐岩储集层定量研究方面做出了有益的探索。

关键词：地震反射振幅塔里木盆地碳酸盐岩古潜山储集层

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超压凝析气藏的流体相态和物理性质

石油学报 2004年第4期25卷 71-74页

作者：郜国喜袁士义宋文杰李海平罗凯塔里木油田勘探开发研究院新疆库尔勒841000 中国石油勘探开发研究院北京100083 西南石油学院

在国内发现的高温高压凝析气藏越来越多 ,所以须加强对这类气藏流体相态和物性的实验和理论研究。应用某气田地面油气样品 ,在实验室配制了高含蜡凝析气流体 ,研究了高含蜡凝析气在压力很高时的相态和物理参数。通过流体等质膨胀实验 ,... 详细信息

在国内发现的高温高压凝析气藏越来越多 ,所以须加强对这类气藏流体相态和物性的实验和理论研究。应用某气田地面油气样品 ,在实验室配制了高含蜡凝析气流体 ,研究了高含蜡凝析气在压力很高时的相态和物理参数。通过流体等质膨胀实验 ,确定了流体露点压力和相应的实验特性 ,给出了超高压下的压缩因子等数据。采用Dranchk等人的关系式计算了流体在超高压状态下的偏差因子。结果表明 ,计算值明显小于实验数值 ,误差大于 10 % ,且随压力的增大误差也增大。地层流体含有大量的蜡组分 ,在流体压力大于露点压力时。

关键词：高温高压凝析气藏高含蜡凝析气流体相态压缩因子物理性质

Application of C5-C13 light hydrocarbons in depositional environment diagnosis

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Progress in Natural Science:Materials International 2008年第9期18卷 1129-1137页

作者： Peirong Wanga,b,, Guanjun Xu a,c, Tingrong Xiaoc, Dajiang Zhanga,c, Bin Zhanga,c a Key Laboratory of Petroleum Geochemistry, china National Petroleum corporation, Beijing 100083, china b Department of Organic Geochemistry, Yangtze University, Jingzhou 434023, china c Central Laboratory of Petroleum Geology, research institute of Petroleum Exploration and Development, petrochina, Beijing 100083, china Key Laboratory of Petroleum Geochemistry China National Petroleum Corporation Beijing 100083 China Department of Organic Geochemistry Yangtze University Jingzhou 434023 China Central Laboratory of Petroleum Geology Research Institute of Petroleum Exploration and Development PetroChina Beijing 100083 China

Based on the geological background and Gammacerane/C31H(S + R) ratios, source rock depositional environments of the studied oil samples (194) from 13 oilfields were classified into three groups according to salinity:saline-lacustrine facies, fresh to brackish lacustrine facies (including limnetic facies), and semi-saline to saline facies (including marine facies of the tarim Basin).C5-C13 compound groups in the crude oils were separated by GC, and about 286 compounds were qualitatively *** geochemical application of the C6-C13 compound groups and their ratios between each group with individual carbon number was *** studies show that (1) C6-C13 compound groups and their ratios in the crude oils could serve as new reliable parameters for oil-oil correlation because the C6-C13 light fractions are the major oil component, especially in light oil or condensate, in which they account for almost 90% of the whole oil;(2) the compound groups of C7 light hydrocarbons in oils derived from difierent depositional environments with difierent salinity have difierent characteristics;(3) C6-C13 compound groups and ratios may be afiected by other factors such as maturity, but they are mainly controlled by salinity of depositional waters.

关键词： Light hydrocarbons Crude oil Depositional environment Salinity

Distribution and characteristics of gravelly soil liquefaction in the Wenchuan M_s 8.0 earthquake

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Earthquake Engineering and Engineering Vibration 2010年第2期9卷 167-175页

作者： Cao Zhenzhong1,Hou Longqing2,Xu Hongmei2 and Yuan Xiaoming1 1. institute of Engineering Mechanics,china Earthquake Administration,Harbin 150080,china 2. East china institute of Technology,Fuzhou 344000,china institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China

In this paper,a distribution map of gravelly soil liquefaction that was caused by the Wenchuan M8.0 earthquake in china is proposed based on a detailed field investigation and an analysis of geological soil profiles. The geological background of the earthquake disaster region is summarized by compiling geological cross sections and borehole logs. Meanwhile,four typical liquefied sites were selected to conduct sample drillings,dynamic penetration tests (DPT),and shear wave velocity tests,to understand the features of liquefied gravelly soil. One hundred and eighteen (118) liquefied sites were investigated shortly after the earthquake. The field investigation showed:(1) sandboils and waterspouts occurred extensively,involving thousands of miles of farmland,120 villages,eight schools and five factories,which caused damage to some rural houses,schools,manufacturing facilities and wells,etc.; (2) the Chengdu plain is covered by a gravelly soil layer with a thickness of 0 m to 541 m according to the geological cross sections; (3) there were 80 gravelly soil liquefied sites in the Chengdu plain,shaped as five belt areas that varied from 20 km to 40 km in length,and about ten gravelly soil liquefied sites distributed within Mianyang area; and (4) the grain sizes of the sampled soil were relative larger than the ejected soil on the ground,thus the type of liquefied soil cannot be determined by the ejected soil. The gravelly soil liquefied sites are helpful in enriching the global database of gravelly soil liquefaction and developing a corresponding evaluation method in further research efforts.

关键词： gravelly soil liquefaction borehole soil profile geological cross section grain size distribution Wenchuan earthquake

Solving the input data in error correc-tion of optical fabrication by finite Fourier coefficient algorithm

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Science china(Technological Sciences) 2006年第1期49卷 50-60页

作者： CHENG Haobo1,2, SUN Guozheng3 & FENG Zhijing2 1. Department of Optical Engineering, Beijing institute of Technology, Beijing 100081, china 2. Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, china 3. china North Industries Group corporation, Beijing 100089, china 1. Department of Optical Engineering Beijing Institute of Technology Beijing 100081 China 2. Department of Precision Instruments and Mechanology Tsinghua University Beijing 100084 China 3. china North Industries Group corporation Beijing 100089 China

A free-form lens (FFL) is a special surface that is difficult to be fabricated. FFL are usually fabricated by computer-controlled optical surfacing (CCOS) technique. During CCOS, the material removal amount is determined by the unit removal function (URF) convoluting with the input data――the dwell time. When the removal amount and the URF are known, how to solve the input data involves the special algorithm――deconvolution. Usually, the input data are solved by virtue of low pass filter or iterative methods. However, an approximation solution would destroy the machining stability nec-essary to perform precisely CCOS. In this paper, to solve the input data, a new method that is based on the finite Fourier coefficient is put forward. It can give a continuous and accurate solution for fabricating choice. Several parameters are simulated, which influ-ence the process of CCOS, and evaluating on the effect of the method is also carried out. Experimental results verify that this method is suitable for guiding the manufacturing of high precision FFL.

关键词： optical fabrication, computer controlled optical surfacing, free-form lens, finite Fourier coefficient, error correction.