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- P-wave velocity analysis in anisotropy medium. 各向異性介質縱波速度分析。
- Next, a study of P-wave nonhyperbolic moveout velocity analysis in azimuthally anisotropic media is performed. 在此基礎上,針對方位各向異性介質模型開展了縱波非雙曲時差速度分析的研究工作。
- The assumption that there is no lateral velocity variation in a stratum is usually made in velocity analysis. 通常進行速度分析時僅設地層沒有速度橫向變化,但是實際情況並非如此。
- The authors propose a migration velocity analysis method based on a global optimization. 提出用全局最優化偏移速度分析方法求取介電常數分佈。
- Based on the theory, wave propagates through the tilted strata, the method of 3-D irregular line velocity analysis (on condition that the dip is steep) is put forward. 本文根據波在傾斜地層中的傳播理論,提出在大傾角情況下的三維非規則測線速度分析方法。
- Because of the ray asymmetry of the downgoing and upgoing waves, the velocity analysis based on the CMP gather cannot be adapted to that of the converted wave (CCP). 轉換波上、下行波的不對稱性,使得常規基於共中心點(CMP)道集的速度分析不能適用於轉換波。
- The dip direction and dip angle of a subsurface interface must be first determined in three-parameter velocity analysis that needs predetermined dip angle. 採用預求傾角法進行三參量速度分析時,首先要確定地下界面的傾向和傾角。
- Equivalent offset migration(EOM)method,which has particular advantages in velocity analysis and imaging,provides ideas for scattered wave imaging. 研究表明,基於等效偏移距的偏移方法(EOM)在速度分析和偏移成像方面具有獨特的優勢,為散射波成像方法研究提供了思路。
- Equivalent offset migration (EOM) method, which has particular advantages in velocity analysis and imaging, provides ideas for scattered wave imaging. 研究表明,基於等效偏移距的偏移方法(EOM)在速度分析和偏移成像方面具有獨特的優勢,為散射波成像方法研究提供了思路。
- Conclusively, it is shown that the selective correlation velocity analysis is a highly accurate method of the high resolution. 結果表明,多波選擇性相關度分析方法是一種高精度、高解析度的速度分析方法。
- The 3-D prestack depth migration principally includes three parts: travetime cal-culation, Kirchhoff summation, and velocity analysis. 利用深度偏移后的道集是否拉平進行速度分析,可以進一步修改速度模型。
- The resulted traces are regularized and can be used for high signal-to-noise ratio structural imaging and high quality velocity analysis. 最終得到的疊加道可以起到數據規則化的作用,同時,也可以進行高信噪比的構造成像,提高速度分析的質量。
- Velocity analysis based on hyperbolic travel time curve is therefore not sufficient for converted waves in anisotropic media. 因此,基於雙曲時距關係的速度分析方法不適用於各向異性介質轉換波的速度分析。
- The quality of velocity analysis directly affects normal moveout correction, and then affects stack imaging and migration. 速度分析的質量直接影響動校正繼而影響疊加成像以及偏移歸位。
- As an inverse problem,migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image-point gathers(CIGs). 作為一種反問題方法,偏移速度分析利用共成像點道集上的剩餘曲率成像點來反演速度模型。
- In the three-parameter velocity analysis,we first derive dip direction and dip angle of reflection interface from 3-D seismic data,then obtain mean square-root ve-locity. 在三參量速度分析中,需要根據三維地震勘探資料充求取地下界面的傾向和傾角,然後確定均方根速度。
- Since offset ray parameter is proportional to angle of incidence at the reflector, CAI gathers provide a complete set of tools for migration velocity analysis and AVO analysis. 由於照射角和炮檢距的對應關係 ;共照射角像集又為偏移速度分析和AVO(振幅隨炮檢距變化 )分析等提供了有力工具 .
- Velocity analysis is an important step in seismic data processing, which determines the precision of NMO, CDP stack, post-stack migration and time-depth conversion. 速度分析是地震勘探資料處理中的關鍵環節,它的準確與否對動校正、共深度點疊加、疊後偏移及時深轉換等都將產生影響。
- As an inverse problem, migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image point gathers (CIGs). 作為一種反問題方法,偏移速度分析利用共成像點道集上的剩餘曲率成像點來反演速度模型。
- Statistical techniques are regularly employed. 統計方法得到經常的運用。