本文關(guān)鍵詞：雙重介質(zhì)油氣藏低速非達(dá)西滲流試井有效井徑數(shù)學(xué)模型及典型曲線，由筆耕文化傳播整理發(fā)布。

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     MATHEMATICAL MODEL AND TYPICAL CURVE FOR CALCULATING EFFECTIVE HOLE DIAMETER IN THE LOW VELOCITY NON DARCY FLOW TESTING OF DUAL MEDIA RESERVOIRS

     雙重介質(zhì)油氣藏低速非達(dá)西滲流試井有效井徑數(shù)學(xué)模型及典型曲線

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     IN LOW VELOCITY NON DARCY PERCOLATION FLOW THE UNITY OF WELL TEST ANALYSIS EQUATIONS USED FOR GAS AND OIL WELLS RESPECTIVELY

     低速非達(dá)西滲流中氣井、油井試井分析方程的統(tǒng)一

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     Low velocity non Darcy flow of dual media oil gas reservoirs with low permeability often makes well testing analysis more complicated.

     雙重介質(zhì)低滲油氣藏，往往存在低速非達(dá)西滲流，故該類油氣藏的油氣井試井分析更具復(fù)雜性。

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     Taking well bore storage and skin effect into consideration,a mathematic model for calculovting effective hole diameter in the low velocity non Darcy flow testing of dual media reservoirs is set up.

     在考慮井筒儲(chǔ)集和表皮效應(yīng)的前提下，建立了雙重介質(zhì)油氣藏低速非達(dá)西滲流有效井徑試井的數(shù)學(xué)模型；

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     On the basis of experimental research,a mathematical model of describing gas lo w velocity non Darcy flow in low permeability reservoir was set up and its pros p erous general solution was acquired by use of the solving method of power series .

     在實(shí)驗(yàn)研究基礎(chǔ)上建立了描述氣體低速非達(dá)西滲流的數(shù)學(xué)模型 ,采用冪級(jí)數(shù)解法求得低滲儲(chǔ)層氣體低速非達(dá)西滲流模型繁榮通解。

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  velocity non

Corrections to the vertical distribution of mean density and current velocity non-oscillating on the wave's time scale have been derived in the approximation, quadratic by the wave's steepness.

There are two very interesting limiting cases, one with a non-abelian G2 and another with an abelian G2 acting non-orthogonally transitively on spacelike surfaces and with the fluid velocity non-orthogonal to the group orbits.

Furthermore, high velocity (non-Darcy) flow well equations are developed for cell-centered finite difference, Galerkin finite element and mixed finite element techniques.

The main goal is to predict the damage caused by a high velocity non penetrating impact of microparticles.

The ball caged constant angular velocity universal joint with dividing rod is used in the front driving axle of tractors and automobiles. The angular velocity non-homogeneity of the universal joint depends upon the parameters of dividing rod. Presently no literature states how to determine the optimized parameters theoretically. The existing method is to give these parametersa, b. m a series of ratios, such as m/a, m/b, experiments, are made according to these ratios and the experimental results are described...

The ball caged constant angular velocity universal joint with dividing rod is used in the front driving axle of tractors and automobiles. The angular velocity non-homogeneity of the universal joint depends upon the parameters of dividing rod. Presently no literature states how to determine the optimized parameters theoretically. The existing method is to give these parametersa, b. m a series of ratios, such as m/a, m/b, experiments, are made according to these ratios and the experimental results are described in curves. The method mentional above lacks theoretical basis.Now we have sdved the problem with the theory of approximation in this paper. It also deduces the satisfying relations between these parameters.

拖拉機(jī),汽車在前驅(qū)動(dòng)橋中采用的帶分度桿的球籠式等角速的萬向節(jié),其分度桿參數(shù)對(duì)萬向節(jié)的轉(zhuǎn)速不均勻性起著決定性的作用。目前國內(nèi)外資料僅限于給定這些參數(shù)a、b、m間一系列比值m/a、b/a,根據(jù)給定比值進(jìn)行實(shí)驗(yàn),將結(jié)果繪成特性曲線,但最佳參數(shù)a、b、m如何確定缺乏理論根據(jù)。 本文用函數(shù)的逼近解決了這個(gè)問題,并導(dǎo)出這些參數(shù)間應(yīng)滿足的關(guān)系。

In connection with the design of a low speed wind tunnel in Northwestern Polytechnical University, numerical investigation of the flow in rectangular contraction has been conducted. Finite difference method is employed, using body-fitted coordinates and AF1 scheme, and solved by ADI technique. The flows in three commonly used contour curves are analyzed, i. e. Witozinsky curve, fifth power curve and matched cubic curves. Three-dimensional features of the contraction flow are demonstrated in the calculation....

In connection with the design of a low speed wind tunnel in Northwestern Polytechnical University, numerical investigation of the flow in rectangular contraction has been conducted. Finite difference method is employed, using body-fitted coordinates and AF1 scheme, and solved by ADI technique. The flows in three commonly used contour curves are analyzed, i. e. Witozinsky curve, fifth power curve and matched cubic curves. Three-dimensional features of the contraction flow are demonstrated in the calculation. The adverse pressure gradient at the corner and the velocity non-uniformity at the exit cross section are calculated and examined.

本文結(jié)合西工大低速風(fēng)洞設(shè)計(jì)進(jìn)行了矩形三元收縮段流場的計(jì)算和分析,計(jì)算采用差分方法和貼體坐標(biāo),以AF1格式進(jìn)行離散化并利用ADI方法求解。對(duì)三種常用的收縮曲線(即Witozinsky曲線,五次方曲線和雙三次方曲線)的三元流場進(jìn)行了具體計(jì)算和比較。計(jì)算結(jié)果正確反映了三元收縮段流動(dòng)的特點(diǎn),給出了流動(dòng)三元性對(duì)壁面逆壓梯度和出口均勻性影響的數(shù)值結(jié)果,表明本文方法是三元收縮段設(shè)計(jì)的有效分析和設(shè)計(jì)手段。

Low velocity non Darcy flow of dual media oil gas reservoirs with low permeability often makes well testing analysis more complicated.Taking well bore storage and skin effect into consideration,a mathematic model for calculovting effective hole diameter in the low velocity non Darcy flow testing of dual media reservoirs is set up.The typical curve in infinite formation condition is drawn up by numerical inversion method.The...

Low velocity non Darcy flow of dual media oil gas reservoirs with low permeability often makes well testing analysis more complicated.Taking well bore storage and skin effect into consideration,a mathematic model for calculovting effective hole diameter in the low velocity non Darcy flow testing of dual media reservoirs is set up.The typical curve in infinite formation condition is drawn up by numerical inversion method.The characterstics and applocation of the curve are discussed for various parameter conditions.This reaserch results can be further spread to double permeation model and complex model to solve the well testing problem of complex oil gas reservoirs.

雙重介質(zhì)低滲油氣藏，往往存在低速非達(dá)西滲流，故該類油氣藏的油氣井試井分析更具復(fù)雜性。在考慮井筒儲(chǔ)集和表皮效應(yīng)的前提下，建立了雙重介質(zhì)油氣藏低速非達(dá)西滲流有效井徑試井的數(shù)學(xué)模型；采用數(shù)值反演法，，繪制了無限大地層條件下的典型曲線；討論了不同參數(shù)條件下曲線的特征以及應(yīng)用方法。該成果可進(jìn)一步推廣到雙滲透模型和復(fù)合模型中，以解決復(fù)雜油氣藏的試井問題。

  本文關(guān)鍵詞：雙重介質(zhì)油氣藏低速非達(dá)西滲流試井有效井徑數(shù)學(xué)模型及典型曲線，由筆耕文化傳播整理發(fā)布。