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- P-wave velocity analysis in anisotropy medium. 各向異性介質(zhì)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(zhì)模型開(kāi)展了縱波非雙曲時(shí)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(jìn)行速度分析時(shí)僅設地層沒(méi)有速度橫向變化，但是實(shí)際情況并非如此。
- The authors propose a migration velocity analysis method based on a global optimization. 提出用全局最優(yōu)化偏移速度分析方法求取介電常數分布。
- 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(xiàn)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(chēng)性,使得常規基于共中心點(diǎn)(CMP)道集的速度分析不能適用于轉換波。
- The dip direction and dip angle of a subsurface interface must be first determined in three-parameter velocity analysis that needs predetermined dip angle. 采用預求傾角法進(jìn)行三參量速度分析時(shí),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,基于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(yōu)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，基于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(yōu)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(guān)度分析方法是一種高精度、高分辨率的速度分析方法。
- 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(jìn)行速度分析，可以進(jìn)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(shí)，也可以進(jìn)行高信噪比的構造成像，提高速度分析的質(zhì)量。
- Velocity analysis based on hyperbolic travel time curve is therefore not sufficient for converted waves in anisotropic media. 因此，基于雙曲時(shí)距關(guān)系的速度分析方法不適用于各向異性介質(zhì)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(zhì)量直接影響動(dòng)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(wèn)題方法,偏移速度分析利用共成像點(diǎn)道集上的剩余曲率成像點(diǎn)來(lái)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，然后確定均方根速度。
- 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. 由于照射角和炮檢距的對應關(guān)系 ;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(guān)鍵環(huán)節，它的準確與否對動(dòng)校正、共深度點(diǎn)疊加、疊后偏移及時(shí)深轉換等都將產(chǎn)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(wèn)題方法，偏移速度分析利用共成像點(diǎn)道集上的剩余曲率成像點(diǎn)來(lái)反演速度模型。
- Statistical techniques are regularly employed. 統計方法得到經(jīng)常的運用。
