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The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.
其主要研究内容包括:阐述课题研究的学术背景及其理论与实际意义,概括总结出流动层析成像技术的发展现状和存在的问题,指出电容层析成像技术的优点;讨论电容层析成像系统的组成及工作原理,进行详尽的理论分析,以变分原理为基础,将ECT的有限元边值问题转换为等价的变分问题,从而建立系统的有限元模型;在系统有限元模型的基础上,建立敏感场的数学模型,编制有限元的仿真软件,并从不同角度证明电容层析成像系统有限元模型的正确性;利用有限元模型,定性地分析电容传感器各结构参数对其性能的影响,并对传感器结构参数进行优化设计,使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明,它们之间的相对误差小于0。
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Consequently, the key factors for deep sandstone diagenesis are chemical and physical conditions in the deep, restriction from shallow diagenesis and components and textures of reservoir, and lithic inversion.
因此深部储层研究要点是深部储层成岩反应的物理化学条件和孔隙演化特征,浅层成岩作用对深层孔隙演化的制约,以及深部储层物性约束反演技术。
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The palisade tissue cells of common type were 2 layers, while those of spur-type and columnar type were 3 or 4 layers. The ratio of palisade tissue and spongy tissue of common type was less than 1, and that of spur type and columnar type was more than 1. Moreover, the number of palisade tissue cell layers and the ratio of P/S were increased with the dwarfing degrees.
普通型苹果的叶片栅栏组织细胞一般排列成2层,其栅栏组织与海绵组织的厚度比值小于l;而柱型和短枝型的栅栏组织细胞通常排列成3层或4层,其栅栏组织与海绵组织的比值大于1,而且,随着矮化程度的加强,栅栏组织细胞层数和栅/海比有增加趋势。
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In allusion to the problem of different genesis in different structural locations, complex evolution history of diagenesis and invasion of diabase in low permeability reservoir, a new evaluating criterion was proposed for 6 element evaluation, including structure, deposition, diagenesis, fluid, physical property and diabase. The reservoir is classified and evaluated by using grey correlating method and using subzone as unit.
针对低渗透储层不同构造部位成因不同、成岩演化历史复杂、辉绿岩侵入等问题,提出了以构造、沉积、成岩、流体、物性、辉绿岩为主的"六元论"评价新标准,利用灰色关联的分析方法,以小层为单元进行了储层综合评价及分类。
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The research on sedimentary facies and diagenesis of the reservoir combined with analyses of diagenesis effect of low permeability resevoir on the reservoir property and with division of diagenesis stages indicates that the genetic mechanism of the low permeability reservoir in this area is the filling and cementation of autogenetic mineral during diagenesis.
该项研究是建立在储层沈积相、成岩作用研究的基础上,通过分析低渗透储层成岩作用对储集物性的影响及成岩作用阶段划分,认为造成本区储层砂岩渗透率较低的主要原因是成岩期各种自生矿物的充填和胶结作用。
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Based on lots of achievements of predecessors, directed by reservoir sedimentology, high-resolution sequence stratigraphy and petroleum geology, taking full advantage of loggin, core and thin section data from different wells, this paper has taken detailed study on the Upper Paleozoic strata in Tabamiao area.
本论文在众多前人研究成果的基础上,以储层沉积学,及高分辨率层序地层学、石油地质学等理论为指导,充分利用测井、钻井岩芯、薄片鉴定等资料,针对塔巴庙地区上古生界沉积相及沉积微相类型与展布,高分辨率层序地层特征与层序—岩相古地理演化,成岩作用类型与序列,孔隙类型与特征,以及储层物性特征与分布规律等方面展开了系统深入研究,最后对有利区带进行了预测。
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At least 5 layers of retina were recognized in the posterior retina, including the simple pigment epithelium, neuroblastic cell layer, developing inner plexiform layer, developing ganglion cell layer and the developing nerve fiber layer.
后极视网膜至少可分为5层,即色素层、成神经层、发育中的内网层、节细胞层和神经纤维层。
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The result showed that, the body wall most outer layer cuticle assumesthe translucent porodine, the surrounding entire body wall; Close isconnected with the cuticle 表皮层 for 合胞体 the structure, inthe back, the abdomen and its two sides separately adds thick to inprominent Cheng Jizhuang, separately contains the back side,腹侧the nerve and compares to the developed back, the abdomen nerve; Themyo- position to the body wall most inner layer, has the muscle cellto arrange becomes; Between the body wall and the digestive tractcavity is a body cavity; Digestive tract for 肌质 structure, afterinference for roundworm's esophagus.
结果显示,体壁最外层的角质层呈半透明的胶状,包围整个体壁;与角质层紧密相连的表皮层为为合胞体构造,在背、腹及其两个侧面分别加厚向内突出成脊状,分别包含背侧、腹侧神经和相比对发达的背、腹神经;肌层位于体壁最内层,有肌细胞排列而成;体壁与消化道之间的空腔为体腔;消化道为肌质结构,经推断为蛔虫的食道。
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Tomographic results of real data show that the method is reliable, stable and convergent, and the results have high precision.
层析成像结果表明,层析成像算法可靠稳定,收敛性好,层析成像结果的精度较高。
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The reservoir rock types in the region of interest are grain limestone, algal limestone, cryptite, siltstone, muddy limestone and mudstone. The thesis identified as a result of changes in the deposition causing the heterogeneity in plane, and then the geological oil reserves have been calculated in accordance with the areal heterogeneity.3、Based on the data of core analysis, bore logging, array induction imaging log and FMI, porosity and permeability model were built using regression analysis. Through testing 45 rock samples, a, b, m, n value were obtained and used to calculate single-layer oil saturation value using the Archie formula. According to the theory of laterolog and inductolog, resistivity ratio and cross plot were used to identification effective thickness. Effective thickness was identified delicately in 103 wells. Based on the over work, active porosity and oil saturation was calculated accurately.4、According to observation of 100 pieces of the thin slices, cast thin slices and 383m core in three wells, the chief diagenesis in this area were compaction, cementation, denudation and cataclasis. Cementation and denudation were universally influenced active porosity this area. The intergranular pores, residual pores and secondary pores were formed in thin carbonated reservoir of lacustrine facies.5、The influence of reservoir heterogeneity to reservoir calculation was analyzed systematically using actual data. And the conclusions were as follows:①The principal reason leading to oil distribution unequal is interior structural feature of reservoir in structural hydrocarbon reservoir.
确定了由于沉积微相的变化而导致的平面非均质性,进而在平面上按照平面非均质单元计算了石油地质储量。3、利用岩心分析、常规测井曲线与阵列感应、成像测井资料相结合,分岩性利用回归分析方法建立了储层孔隙度、渗透率模型;通过对45块岩样进行岩电试验,获取了a、b、m、n值,利用阿尔奇公式计算了各单层含油饱和度值;根据侧向电阻率和感应电阻率串并联特性,利用电阻率比值法与常规交会图法相结合重建了有效厚度图版,对全区103口井目的层段进行了有效厚度精细划分,通过以上工作,准确求取了储量计算单元内有效厚度参数、有效孔隙度参数以及含油饱和度参数。4、通过对研究区3口井383m岩心观察,100余块薄片、铸体薄片镜下鉴定得出:油泉子油田上、下油砂山组储层主要成岩作用是压实作用、胶结作用、溶蚀作用和破裂作用,其中溶蚀作用、胶结作用最普遍,这两种作用对有效孔隙度影响最大,以上成岩作用形成了原生粒间孔、粒间残余孔和次生孔隙(如粒间溶孔、粒内溶孔、铸模孔、晶间孔等)为主的薄层湖相碳酸盐岩储层。5、利用实际资料,系统分析了油藏非均质对储量计算的影响,认为:①对于构造油气藏而言,油气藏构造及断裂特征是造成油气分布不均的首要原因,储集条件相同的条件下,构造高部位有利于储存油气,油气在垂向的重力分异体现了油气藏内部构造的不均一特征。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。