波場延拓 的英文怎麼說

中文拼音 [bōchǎngyántà]
波場延拓 英文
wave field extrapolation
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 場 : 場Ⅰ名詞1 （平坦的空地 多用來翻曬糧食 碾軋穀物） a level open space; threshing ground 2 [方言] （...
  • 拓 : 拓動詞（把碑刻、銅器等的形狀和上面的文字、圖形印下來; 拓印） make rubbings from inscriptions pict...
  1. In this paper, a " step - by - step " recursive 3 - d frequency - space wed scheme is presented to deal with real data

    本文採用三維頻率空間域有限差分波場延拓運算元以「逐步累加」的方式實現了三維波動方程基準面校正，並對實際數據進行了處理。
  2. A generalized high order screen extrapolator of double square root ( dsr ) equation is derived from the non - stationary phase shift formula of wavefield continuation, thus a new prestack depth migration method in the cmp - offset domain is proposed

    在波場延拓方面，從非穩態相移公式出發，推導出廣義高階屏雙平方根波場延拓公式，從而得出了一種新的共中心點-炮檢距域疊前深度偏移方法。
  3. The second step, on the base of the first step, the paper designs seven practical models which bases on the practical information of the seismic, by the same way the paper gets the record of the forward and the profile of the migration

    第二步，在第一步的基礎之上建立了七個實際碳酸鹽巖縫洞儲層縫洞模型（由實際地震資料確定的） ，同樣利用高效的波場延拓運算元對七個模型進行了正演模擬和偏移處理。
  4. The dissertation focuses on seismic wavefield forward modeling and migration for the fractured reservoir. the paper integrates and researches the wavefield extrapolation operator for lateral variation of velocity, analysis of the wavefield characteristic, forward modeling and depth migration of prestack and poststack seismic wavefield, creation of wavelet, design of the model with fracture and cavity, and computation of reflectivity

    本文圍繞縫洞儲層地震波場正演與偏移問題，對橫向變速波場延拓運算元；疊前與疊后正演模擬；疊前與疊后深度偏移；子波的生成；縫洞模型的設計、反射系數的求取、正演、偏移及其波場特徵分析進行了一體化研究。
  5. In term of analyzing and summarizing the existing achievement, propose an advanced and practical wavefield extrapolation operator and arithmetic of forward modeling and migration, which obtain numerical simulation and analysis completely and systemically and exploited new field of fractured reservoir seismic wavefield numerical simulation and applicationin in frequency - wavenumber domain

    在總結、分析前人研究成果的基礎上，提出了具有前瞻性和實用性的波場延拓運算元與正演、偏移演算法，較系統全面地進行了數值計算與分析，開辟了頻率?波數域縫洞儲層地震波場數值模擬與應用的新領域。
  6. Comprehensively discuss the issues in application, adaptive condition and performance, propose a fast arithmetic of forward modeling and depth migration in common shot gathers with one - way acoustic wave equation based on vrselrf, and verify the arithmetic by numerical simulation. concisely discuss the cause of the creation of evanescence and the problem of lateral amplitude discontinuity result from it. fourthly, use the reflectivity model, computed to describe the fracture model, with the formula of computation reflectivity based on elastic - acoustic approximation, and the wavelet model computed by the method, wavelet creation with fourier transform, we proposed, in conjunction with vrselrf wavefield extrapolation operator

    第三，將頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）應用於疊前與疊后正演模擬、疊前與疊后深度偏移，對演算法應用中應注意的問題、適用范圍、性能等作了較為全面的論述；提出了基於vrselrf的單程聲波方程共炮記錄正演模擬和深度偏移快速演算法，並通過數值模擬試驗對演算法進行了驗證；簡要地討論了倏逝波的產生原因及其帶來的橫向振幅不連續性問題。
  7. This conversion is based on the analytic expression of sonic and elastic wave equation, and use the different wave field extrapolation, which is initially used in seismic migration and forward modeling. this paper introduces the easy and efficient finite - difference method to realize the conversion by comparing three different methods

    論文經過對三種常規波場延拓方法（ kirchhoff積分法、頻率波數域法和有限差分法）優缺點的比較，採用了簡單易用的有限差分方法來實現這種轉換。
  8. The paper concentrates on seismic wave - field forward modeling and migration for the fractured reservoir. it researches the wavefield extrapolation operator for lateral variation of velocity, design four theoretical models and seven practical models with fracture and cavity. base on the progenitor, in the frequency - wavenumber domain with the pspi wavefield extrapolation operator and arithmetic of forward modeling and migration that applied lateral variation of velocity which is strong, the paper obtains the result of numerical simulation and the wavefield characteristic by the way of the forward modeling and depth migration of poststack seismic wavefield

    本文圍繞縫洞儲層地震波場正演與偏移問題，研究了適用於橫向變速波場延拓運算元，建立了四個理論的縫洞模型和七個實際的縫洞模型，在總結、分析前人的研究成果的基礎上，利用適合橫向速度劇烈變化的相移加插值的波場延拓運算元，在頻率?波數域對上述的地質模型進行正演、偏移處理，最後得到了縫洞儲層地震波場的一些特徵。
  9. Author, starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations, in frequency - wavenumber domain, and the improved wavefield extrapolation scheme, also give the method to improve the computation efficiency. the achievement establishes the theoretic basis of the whole research

    首先，從波場延拓的單程波方程出發，系統地研究了頻率波數域的波場延拓運算元之間的相互關系和轉換條件並在此基礎上提出了能適應劇烈橫向變速的頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）和部分波場延拓改進方案及提高運算效率的措施，為整個研究打下理論基礎。
  10. The seismic modeling algorithm includes in two key steps in which one is for calculating effective elastic parameters in a fractured and caved media by using elastic wave equation, the other is for wave extrapolating by using acoustic one - way wave equation based on an equivalent geology model consisting of those effective parameters

    地震正演方法包含兩個關鍵步驟，一是利用彈性波動方程計算含縫洞介質的有效彈性參數，另一步驟是根據有效彈性參數構成的等效地質模型，用單程聲學波動方程進行波場延拓。
  11. This method has simple creating process and high precision, and can be used in wavefields depth extrapolation

    該方法設計簡單，精度高，能夠滿足波場深度延拓的需要。
  12. Further, analyse the characteristic of the seismic wavefield of fractural reservoir and the influence caused by fracture density, property of the filled material and the strike of fracture. fifthly, in term of research of zhangshulun et al., concisely discuss the arithmetic of the plane wave forward modeling and migration with phase shift method, in prestack common offset gathers and check the arithmetic by numerical simulation

    第四，用基於彈性?聲學近似的反射系數計算公式和本文提出的付氏變換子波生成法得到縫洞模型的反射系數模型和子波模型並用vrselrf波場延拓運算元對其進行地震波場數值模擬；進一步分析了縫洞儲層的地震波場特徵及縫洞密度、充填物性質和裂縫走向對其波場特徵的影響。
  13. In explicit depth extrapolation method of frequency - space fields, wavefield depth extrapolation is completed with convolution of short explicit difference operators and the wavefield

    摘要在頻率空間域顯式疊前深度偏移中，波場深度延拓是通過顯式差分短運算元與波場的空間褶積完成的。
  14. Based on the special properties of the metal contact surface, on certain conditions the electromagnetic field components of the half - round waveguide are given

    根據金屬界面的特殊性質，在一定條件下運用疊加法的延拓求出半圓形波導的電磁場分量。
  15. Firstly, the paper starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and improves on the wavefield extrapolation operator and so heightens the operation efficiency, and chooses the pspi that fits to the lateral variation of velocity to resolve the wave - equation, which lay a foundation of the theoretic study

    首先，從波場延拓的單程波方程出發，研究了頻率?波數域的波場延拓運算元之間的相互關系和轉換條件，並在此基礎上改進了波場延拓方案和提高了運算效率，選擇了適合於縱橫向速度劇烈變化的pspi方法求解波動方程，為整個研究打下了理論基礎。
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