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孔隙地层
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  porous formation
     In order to cope with mud cake problem in acoustic logging,we produced the synthetic waveform of full acoustic wave train by using Biot's wave theory in porous formation and Johnson's dynamic permeability pattern.
     根据Biot提出的孔隙地层的波动理论,采用Johnson动渗透率模式,针对测井中泥饼问题,计算出声波全波列的合成波形。
短句来源
     Based on the generalized Biot's theory in anisotropic porous formation and Kuijian's theory of multipole acoustic logging, full waveform acoustic logging in transversely isotropic porous formation is discussed.
     基于多孔介质中的广义Biot波动理论和Kuijian等人的多极子声波理论,讨论横向各向同性孔隙地层的声波全波测井问题。
短句来源
     Mode Waves in a Fluid-Filled Borehole Embedded in a Porous Formation
     孔隙地层中流体井孔内的模式波
短句来源
     NUMERICAL CALCULATION OF FULL WAVEFORM ACOUSTIC LOGGING IN TRANSVERSELY ISOTROPIC POROUS FORMATION
     横向各向同性孔隙地层中测井全波波形数值分析
短句来源
     Acoustic head wave on the borehole wall in a porous formation and the causes for its accompanying electromagnetic field
     孔隙地层井壁上的声波首波及其诱导电磁场的原因
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  “孔隙地层”译为未确定词的双语例句
     Studying the problems on mode waves propagating in a cylindrical borehole embedded in fluid-saturated poroelastic formation is necessary.
     本文将地层视为流体饱和孔隙介质,把声测井问题归结为孔隙地层包围井孔的液-固柱面分层介质中声波问题,着重研究由井轴上的点声源激发的轴对称模式波,包括正常模式波和泄漏模式波。
短句来源
     At last, the influence of permeability and of shear modulus to velocity and attenuation of Stoneley waves is studied.
     最后,研究了孔隙地层中渗透率和剪切模量对Stoneley波的波速及衰减的影响。
短句来源
     This paper also points out clearly that the average stress is the main driving force for migration of the petroleum in the pore stratum, the downhill direction of average stress gradient is the preponderant direction of the migration oil and gas.
     指出了三维应力场中平均应力是描述油气流体在孔隙地层中运移的主要指标,平均应力梯度减小的方向就是油气运移的优势方向。
短句来源
     This paper studies the theory and similarity condition of simulation lest,makes a simulation test on the mud filtrate invading oil,gas,and water layers by using the model of a sand plate,and obtains the electric conductivity of high-invasion,low-invasion,low-resistivity zone,and nor-step type of invasion radial profile.
     研究了泥浆滤液侵入孔隙地层的模拟实验理论和相似条件,并用砂盘模型对泥浆滤液侵入油、气、水层进行了模拟实验,得到了侵入地层径向剖面的高侵、低侵、低阻环带和非台阶型的电性特征。
短句来源
     This paper uses the Kuster -Toksoz model, which describes the acoustic transmitting attribute, to illustrate the double pores formation's effect on acoustic log responses. Using this model we get the formation secondary porosity and matrix porosity.
     用描述声波传播属性的Kuster-Toksoz模型来表达双孔隙地层对声波响应的影响,并求解出基质孔隙度和次生孔隙度值。
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  相似匹配句对
     STRATUM
     地层
短句来源
     METHODS TO ESTIMATE FORMATION PORE PRESSURE IN WILDCAT WELL
     探井地层孔隙压力计算
短句来源
     Theoritical Model of Acoustic Logging in Porous Medium
     孔隙地层声波测井的理论模型
短句来源
     formation fines migration;
     地层微粒运移;
短句来源
     Reef Rocks and Pores
     礁岩与孔隙
短句来源
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  porous formation
Depletion of an oil deposit in an elastically compressible fissured-porous formation
      
Steady flow of an incompressible fluid takes place in a porous formation of spatially variable hydraulic conductivityK.
      
Two-dimensional and steady solute transport in a stratified porous formation is analysed under assumption that the effect of pore-scale dispersion is negligible.
      
Besides combining the advantages of both materials, cts/SI membranes exhibit a biphasic structure that will eventually originate in situ porous formation, through a two-step degradation mechanism.
      
Even without hydraulic fracturing, the creation of precipitates can drastically alter the characteristics of the porous formation itself.
      
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The water-flooding problem in a naturally fractured reservoir is one of the most attractive problems in reservoir engineering and dynamics of f.ow through porous media for more than a decade. In this paper the existing mathematical model has been improved, namely, the basic equation of two-phase flow through a medium with double-porosity has been written down; a thorough study has been done by using the method of characteristic, and the essential nature of oil displacement by water from naturally fractured reservoirs...

The water-flooding problem in a naturally fractured reservoir is one of the most attractive problems in reservoir engineering and dynamics of f.ow through porous media for more than a decade. In this paper the existing mathematical model has been improved, namely, the basic equation of two-phase flow through a medium with double-porosity has been written down; a thorough study has been done by using the method of characteristic, and the essential nature of oil displacement by water from naturally fractured reservoirs has been revealed and clarified. This work can be considered as an extension of the well known Buckley-Leverett theory to a medium with double-porosity.

裂缝-孔隙地层中的注水驱油问题是近十多年来油田开发和渗流力学中最受关注的问题之一.本文改进了已有的数学模型,即正确地写出了双重孔隙介质中二相渗流的基本方程,并用特征线方法进行了全面的研究,揭示了裂缝-孔隙地层中水驱油过程的基本特征.可把本工作看作是著名的Buckley-Leverett理论在双重孔隙介质中的推广.

Based on the acoustic formation factor formula proposed recently and the conventional resistivity formation factor formula, and by using the data published by the Society of Core Analysts of America and other papers, the relationship between matrix lithology exponent x and the porosity exponent m is studied in this paper. The main contents include effects of litho]ogy, frequency, pressure, temperature and anisotropy of rock on exponents x and m, It is found that the two exponents are correlated positively which...

Based on the acoustic formation factor formula proposed recently and the conventional resistivity formation factor formula, and by using the data published by the Society of Core Analysts of America and other papers, the relationship between matrix lithology exponent x and the porosity exponent m is studied in this paper. The main contents include effects of litho]ogy, frequency, pressure, temperature and anisotropy of rock on exponents x and m, It is found that the two exponents are correlated positively which shows that in porous formation the transmission of sonic wave and the flow of electrical current are analogous.

根据最近(1986)提出的声波地层因素公式和传统的电阻率地层因素公式,利用美国岩心分析家协会新近(1988)公布的实验数据和其它文献上发表的数据,分析对比了粒间孔隙地层的骨架岩性指数和孔隙结构指数的关系,其中包括岩性、频率、压力、温度、及岩石的各向异性等因素对两指数m的影响,发现这两种指数总是正相关的。这表明,在粒间孔隙地层中声波的传播和电流的传导确实是可类比的。

An expression of pressure wave is derived from stress-strain relation in porous formations. For fluid-saturated grain-to-grainporous formations, acoustic full waveform synthetic microseismograms are calculated with Johnson's dynamic permeability equation of general sense. A relationship between formation physical parameters and acoustic synthetic full waveform is established. The results show that in low frequency source Stoneley wave data is fit for computing the permeability, while in high frequency source...

An expression of pressure wave is derived from stress-strain relation in porous formations. For fluid-saturated grain-to-grainporous formations, acoustic full waveform synthetic microseismograms are calculated with Johnson's dynamic permeability equation of general sense. A relationship between formation physical parameters and acoustic synthetic full waveform is established. The results show that in low frequency source Stoneley wave data is fit for computing the permeability, while in high frequency source Airy phase of pseudo-Rayleigh wave may do better, but other effects must be considered. The velocity ratio between p-wave and s-wave may be used to determine shaliness, and to investigate gas layer. Porosity from s-wave slowness is better than p-wave slowness. The p-wave leaky mode is considerably related to Poisson's ratio of formation. The effect of high frequency water wave, Airy phase of pseudo-Rayleigh wave and environment factors on Stoneley wave should be considered. The effect of p-wave leaky mode on the first arrival of s-wave is prominent, whereas pseudo-Rayleigh wave only affects the continuing arrivals of s-wave. This is considerably related to acoustic source frequency, source-receive separation, and so on.

孔隙地层的应力与应变关系(Biot,1962年)出发,导出了井中压力波的具体表达式,针对流体饱和的粒间孔隙地层,采用具有一般意义的Johnson动渗透率公式,计算出声波全波列测井合成波形,并分析了地层物性诸参数与全波波形的关系。结果表明,在源中心频率低(≤5kHz)时,用斯通利波求渗透率较适合;在源中心频率较高时,用伪瑞利波艾雷相求渗透率较适合,但要考虑其他因素的影响;用纵波和横波时差比可确定泥质含量,也可用来识别含气层;用横波时差求孔隙度比纵波时差准确,在源中心频率不太高时,用纵波后续波有可能确定地层泊松比;在提取斯通利波信息时要注意高频水波和艾雷相的影响。文中还提及了横波的波至问题,认为横波初至主要受纵波后续波的影响,横波的后续波主要受伪瑞利波的影响,而这些影响与源中心频率、源距等有很大关系。

 
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