本文選題：含油儲(chǔ)層 + 彈性波動(dòng)　； 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：儲(chǔ)層巖石中震電效應(yīng)的研究對(duì)于揭示震電勘探和聲電測(cè)井機(jī)理有著重要的意義,但現(xiàn)有的孔隙介質(zhì)震電理論研究?jī)H停留在水飽和條件下,缺乏針對(duì)含油儲(chǔ)層震電耦合的數(shù)學(xué)模型及定量模擬,制約了震電方法在含油儲(chǔ)層中的推廣與應(yīng)用。本文將油水兩相飽和儲(chǔ)層彈性波動(dòng)理論和含油儲(chǔ)層動(dòng)電耦合理論相結(jié)合,建立油水兩相飽和儲(chǔ)層震電耦合理論,對(duì)儲(chǔ)層孔隙介質(zhì)中震電耦合波傳播規(guī)律進(jìn)行定量模擬,并定量分析儲(chǔ)層參數(shù)對(duì)震電耦合波傳播規(guī)律的影響,從理論上揭示油水兩相飽和儲(chǔ)層震電耦合機(jī)制。首先,依據(jù)學(xué)者建立的非飽和多孔介質(zhì)彈性波動(dòng)理論,考慮儲(chǔ)層孔隙為油、水兩種流體飽和情況,推導(dǎo)含油儲(chǔ)層中彈性波傳播方程。數(shù)值模擬油水兩相飽和儲(chǔ)層中彈性波的傳播特性,并探究?jī)?chǔ)層參數(shù)對(duì)彈性波傳播的影響,為油水兩相飽和儲(chǔ)層中震電效應(yīng)研究奠定彈性波動(dòng)理論基礎(chǔ)。然后,針對(duì)儲(chǔ)層孔隙飽和油和水兩種流體時(shí)的儲(chǔ)層震電效應(yīng)研究,將建立的油水兩相飽和儲(chǔ)層中彈性波動(dòng)理論與含油儲(chǔ)層中動(dòng)電耦合理論及麥克斯韋電磁理論相結(jié)合,建立描述油水兩相飽和儲(chǔ)層震電耦合的數(shù)學(xué)模型。對(duì)含油儲(chǔ)層中平面震電波場(chǎng)響應(yīng)特性進(jìn)行定量模擬,并探討孔隙度、滲透率和飽和度等參數(shù)對(duì)震電波場(chǎng)響應(yīng)特性的影響。最后,將震電效應(yīng)研究繼續(xù)擴(kuò)展到飽和凍土中去,利用含油儲(chǔ)層中震電效應(yīng)理論建立方法,將飽和凍土中彈性波動(dòng)理論與多孔介質(zhì)動(dòng)電耦合理論及麥克斯韋電磁理論相結(jié)合,建立描述飽和凍土中震電耦合的數(shù)學(xué)模型,對(duì)飽和凍土中震電耦合波的傳播特性和電磁特性進(jìn)行定量模擬,并探討飽和凍土孔隙度、含冰量等參數(shù)對(duì)震電波場(chǎng)響應(yīng)特性的影響。
[Abstract]:The study of seismoelectric effect in reservoir rocks is of great significance for revealing the mechanism of seismoelectric exploration and acoustoelectric logging, but the existing research on seismoelectric theory of porous media is only under the condition of water saturation. The lack of mathematical model and quantitative simulation for seismoelectric coupling in oil-bearing reservoirs restricts the popularization and application of seismoelectric methods in oil-bearing reservoirs. In this paper, the elastic wave theory of oil-water two-phase saturated reservoir is combined with the electrokinetic coupling theory of oil-bearing reservoir, and the seismoelectric coupling theory of oil-water two-phase saturated reservoir is established, and the propagation law of seismoelectric coupling wave in reservoir pore media is simulated quantitatively. The influence of reservoir parameters on the propagation law of seismoelectric coupling wave is analyzed quantitatively, and the mechanism of seismoelectric coupling in oil-water two-phase saturated reservoir is revealed theoretically. Firstly, according to the elastic wave theory of unsaturated porous media established by scholars, the elastic wave propagation equation in oil-bearing reservoir is derived by considering that the pore is oil and water is saturated. Numerical simulation of the propagation characteristics of elastic wave in oil-water two-phase saturated reservoir and the influence of reservoir parameters on elastic wave propagation lay the foundation of elastic wave theory for the study of seismoelectric effect in oil-water two-phase saturated reservoir. Then, aiming at the study of seismic and electrical effects of porous saturated oil and water, the elastic wave theory in oil-water two-phase saturated reservoir is combined with the coupling theory in oil-bearing reservoir and Maxwell's electromagnetic theory. A mathematical model describing the seismoelectric coupling of oil-water two-phase saturated reservoir is established. The response characteristics of plane seismic wave field in oil-bearing reservoir were quantitatively simulated, and the effects of porosity, permeability and saturation on the response characteristics of seismic wave field were discussed. Finally, the study of seismoelectric effect is extended to saturated permafrost, and the theory of seismoelectric effect in oil-bearing reservoir is established, and the elastic wave theory in saturated permafrost is combined with the theory of electrokinetic coupling of porous media and Maxwell's electromagnetic theory. A mathematical model describing the seismoelectric coupling in saturated permafrost is established. The propagation and electromagnetic characteristics of the coupled seismic wave in saturated frozen soil are simulated quantitatively. The effects of porosity and ice content on the response characteristics of the seismic wave field are discussed.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P631

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本文編號(hào)：1902820