本文關鍵詞：煤基質收縮對裂隙滲透率影響的新數(shù)學模型，由筆耕文化傳播整理發(fā)布。

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地質學

煤基質收縮

     Testing study on the internality controlling factors of coal matrix shrinkage ability

     煤基質收縮能力內在控制因素的試驗研究

短句來源

     NEW MATHEMATICAL MODEL FOR EFFECT OF COAL MATRIX SHRINKAGE ON FRACTURE PERMEABILITY

     煤基質收縮對裂隙滲透率影響的新數(shù)學模型

短句來源

     Experimental Research of Influence of Coal Matrix Shrinkage on Permeability

     煤基質收縮對滲透率影響的實驗研究

短句來源

     The acquired achievements are as follows: On the basis of the theories of solid deformation and solid surface energy, developing a coal matrix shrinkage model that indicates the effects of the deformation of coal matrix shrinkage on the porosity and permeability of fractures.

     1 基于固體變形理論與固體表面能理論，建立煤基質收縮或膨脹變形與煤裂隙滲透率和孔隙度關系的數(shù)學模型。

短句來源

     The permeability influenced by slippage of gas molecule along the pore or fracture wall was corrected by using the Klinkenberg formula, and the coal matrix shrinkage induced change of permeability was quantitatively educed.

     同時 ,利用克林伯格公式 ,校正了因氣體分子沿壁面滑移而受影響的滲透率 ,并定量地推導了煤基質收縮引起的滲透率變化情況 .

短句來源

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     Based on the solid deformation theory and the solid surface theory, a new mathematical model is developed for the effect of shrinkage and deformation of coal matrix on permeability and porosity of coal fractures to eliminate the error caused by calculating permeability and porosity of coal fractures directly with the coal shrinkage factor.

     文章基于固體變形理論與固體表面能理論,建立了一個新的煤基質收縮變形對煤裂隙滲透率和孔隙度影響的數(shù)學模型,消除了直接用煤體收縮系數(shù)來計算煤裂隙孔隙度和滲透率所引起的誤差。

短句來源

     The study results show the change of the fracture permeability caused by the matrix shrinkage experiences the process of descending first and then ascending.

     研究結果表明,煤基質收縮引起裂隙滲透率變化經(jīng)歷了一個先降低后升高的趨勢;

短句來源

     With real cases calculating, analyzing and comparing, it is found that the model can reflect the effect of shrinkage and deformation of coal matrix on permeability and porosity of coal fractures properly and accurately.

     最后,通過實例計算分析對比,模型能準確合理地反映煤基質收縮變形對煤裂隙滲透率和孔隙度變化的影響。

短句來源

     Experimental Research of Influence of Coal Matrix Shrinkage on Permeability

     煤基質收縮對滲透率影響的實驗研究

短句來源

     Testing study on the internality controlling factors of coal matrix shrinkage ability

     煤基質收縮能力內在控制因素的試驗研究

短句來源

     NEW MATHEMATICAL MODEL FOR EFFECT OF COAL MATRIX SHRINKAGE ON FRACTURE PERMEABILITY

     煤基質收縮對裂隙滲透率影響的新數(shù)學模型

短句來源

     With development of the coalbed methane,the shrinking function of the coal base material would enlarge the permeability of the seam.

     隨著煤層氣的開采煤基質的收縮作用增大了煤層滲透性。

短句來源

     Study on dynamic diffusion characteristics of methane in coal matrix

     煤基質中甲烷擴散動力學特性研究

短句來源

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Parallel experiments for permeability of helium and methane under confining pressure were carried out. By controlling the effective stress, the problem of permeability decreasing caused by fluid pressure decreasing and gas desorption was eliminated. The permeability influenced by slippage of gas molecule along the pore or fracture wall was corrected by using the Klinkenberg formula, and the coal matrix shrinkage induced change of permeability was quantitatively educed. The result shows that the permeability...

Parallel experiments for permeability of helium and methane under confining pressure were carried out. By controlling the effective stress, the problem of permeability decreasing caused by fluid pressure decreasing and gas desorption was eliminated. The permeability influenced by slippage of gas molecule along the pore or fracture wall was corrected by using the Klinkenberg formula, and the coal matrix shrinkage induced change of permeability was quantitatively educed. The result shows that the permeability increment induced by coal matrix shrinkage increases with the increase of absolute permeability and decreases in logarithm with the decrease of fluid pressure; The absolute permeability of helium is greater than that of methane.

在具有圍限壓力的情況下進行了煤巖體氦氣和甲烷滲透率的平行實驗 ;采用控制有效應力的方法 ,消除了因流體壓力降低和氣體解吸引起的滲透率變低問題 ;同時 ,利用克林伯格公式 ,校正了因氣體分子沿壁面滑移而受影響的滲透率 ,并定量地推導了煤基質收縮引起的滲透率變化情況 .結果表明 :滲透率增量隨絕對滲透率的增加而增大 ,隨流體壓力的減少而呈對數(shù)形式減少 ;煤巖體氦氣的絕對滲透率大于甲烷的克氏滲透率 ,在有效應力不變的情況下 ,流體壓力愈小 ,滑脫效應愈明顯 ;滑脫效應引起的滲透率增量越大 ;氦氣滑脫效應大于甲烷

Based on macrofracture observation, measurements of mechanic parameter and stress permeability experiment of the upper main coal reservoirs in the central and southern part of the Qinshui Basin in Shanxi Province, the mathematical models for predicting the relationship between permeability and face densities, occurrence and width of fractures were established, respectively. The recently crustal stress situation was simulated with FLAC 3D software, the mathematical model for predicting the relationship between...

Based on macrofracture observation, measurements of mechanic parameter and stress permeability experiment of the upper main coal reservoirs in the central and southern part of the Qinshui Basin in Shanxi Province, the mathematical models for predicting the relationship between permeability and face densities, occurrence and width of fractures were established, respectively. The recently crustal stress situation was simulated with FLAC 3D software, the mathematical model for predicting the relationship between the recently crustal stress and permeability was also established integrating the data of coal bed methane testing permeability, and permeability of the upper main coal reservoirs in the studied region was systematically predicted. The characteristics of coal matrix shrinkage in various coal ranks were revealed by means of adsorption/swelling experiment, the coupling mathematical model among effective stress effect, coal matrix shrinkage effect and permeability was established, and the dynamic change of permeability was simulated during the coalbed methane development.

通過對山西沁水盆地中 南部上主煤層宏觀裂隙觀測 ,力學參數(shù)測量和應力滲透率實驗 ,分別建立了裂隙面密度、裂隙產(chǎn)狀、裂隙寬度與煤儲層滲透率之間的預測數(shù)學模型 ;利用FLAC— 3D軟件 ,模擬了該區(qū)上主煤層內現(xiàn)代地應力狀態(tài) ,結合煤層氣試井滲透率資料 ,構建了應力與滲透率之間關系預測的數(shù)學模型 ,并對該區(qū)上主煤層滲透率進行了全面預測。通過吸附膨脹實驗 ,揭示了各煤類煤基質的收縮特征 ,構建了有效應力、煤基質收縮與滲透率之間的耦合數(shù)學模型 ,并對煤層氣開發(fā)過程中滲透率動態(tài)變化進行了數(shù)值模擬。

Based on the adsorbing-swelling experiments of coal samples, the self-adjusting effects of lean coal to antracite were revealed. Then, the influence of the effects on coal reservoir permeability was analysed and the coupling mathematical model between the effective-stress effect, coal-matrix shrinkage effect and permeability was established. The degressive rule of high-rank coal reservoir permeability during the coalbed methane recovery and the geological significance of the discovery were discussed.

基于吸附膨脹物理模擬實驗,揭示了瘦煤至無煙煤階段煤基質的自調節(jié)特征,分別探討了煤層氣排采過程煤基質收縮和有效應力變化對煤儲層滲透率的影響,構建了有效應力、煤基質收縮與煤儲層滲透率之間耦合的數(shù)學模型,揭示出高煤級煤儲層滲透率在煤層氣排采過程中的遞減變化規(guī)律,并討論了這一發(fā)現(xiàn)的地質意義。

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  本文關鍵詞：煤基質收縮對裂隙滲透率影響的新數(shù)學模型，由筆耕文化傳播整理發(fā)布。