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- In this paper we discuss the difference and relationship between CRP and CRS stacking, NMO/DMO stacking, as well as pre stack depth migration(PreSDM) and CRS stacking in a geometrical viewpoint and on the hypothesis of constant velocity media. 以幾何描述的方式 ,在常速介質(zhì)假設下通過(guò)圖示定性描述CRP與CRS疊加之間 ,NMO/DMO疊加、疊前深度偏移 (PreSDM )與CRS疊加之間的區別與聯(lián)系。
- Keywords Common shot gather;Pre stack depth migration;Paraxial wave equation;Finite difference;Frequency space domain.; 共炮道集;疊前深度偏移;傍軸近似方程;有限差分;頻率-空間域;
- 3D wave equation pre--stack depth migration 三維波動(dòng)方程疊前深度偏移
- High dip finite difference depth migration. 大傾角有限差分深度偏移
- By default, the maximum stack depth for the bookmark stack is set to15 entries. 默認情況下，書(shū)簽堆棧最大深度被設置為15個(gè)入口。
- Velocity model building for prestack depth migration is a model based iteration process. 摘要疊前深度偏移速度建模是一種基于模型的迭代修正過(guò)程。
- The characteristics of Archaeozoic melamorphic reservoirs in Niuxintuo area have been studied through data of coring, 3700 logging and 3D seismic prestack depth migration. 綜合運用鉆井取心、3700測井、三維地震疊前深度偏移等資料,對牛心坨地區太古界變質(zhì)巖儲層特征進(jìn)行了研究。
- In this paper, forward modeling technique is applied to pre-stack depth migration to accurately image the front overthrust nappe struct. 文章將地震資料模型正演技術(shù)應用到疊前深度偏移,探討了一種有助于川西龍門(mén)山前緣逆掩推覆構造地震資料精確成像技術(shù)。
- For the high order generalized screen propagator prestack depth migration, the more the order is the better the result we get. 基于波場(chǎng)逐步累加的"直接下延"法是解決復雜地表和地質(zhì)條件下疊前深度偏移成像的有效手段。
- 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。
- Finally, the finite difference pre-stack depth migration method in f-k domain was adopted to solve the imaging problem of subsalt and salt dome flank. 利用頻率-空間域有限差分疊前深度偏移解決了鹽下及鹽丘側翼的成像問(wèn)題。
- The interpretation precision of target horizon by using prestack depth migration data is high com pared to real drilling. 利用疊前深度偏移資料解釋的目的層層位，與實(shí)鉆結果差異較小。
- Although the wave field based pre-stack depth migration is the most reliable method for complex structure imaging,it has a high computation cost and a poor adaptation to geometry. 基于波場(chǎng)延拓的疊前深度偏移是實(shí)現復雜構造地質(zhì)體成像的可靠方法,但存在著(zhù)計算量大、對觀(guān)測系統適應性差等缺點(diǎn)。
- Wave equation-based prestack depth migration technique can accurately describe the wave field in complex media conditions and perform high resolution imaging. 基于波動(dòng)方程的疊前深度偏移方法能在復雜介質(zhì)條件下精確描述波場(chǎng),且能高精度成像。
- Seismic data of depth domain has been applied widely along with the development of new geophysical technologies such as VSP, depth migration, crosswell seismic. 隨著(zhù)VSP、深度偏移、井間地震等物探新技術(shù)的出現,深度域地震記錄的應用日益增多。
- The migration imaging range is determined according to the structural attitude of 3 D velocity model , and the variable range 3 D prestack depth migration is done on the CSP ... 用三維相移加校正方法在炮集上實(shí)現三維疊前深度偏移，并根據三維速度模型構造形態(tài)，自動(dòng)確定偏移后成像孔徑進(jìn)行變范圍偏移疊加，提高三維構造形態(tài)清晰度。
- It solves out the required multi-valued traveltime and amplitude at the uniform dispersed grids efficiently when applied to 3-D prestack depth migration. 本文算法應用于三維疊前深度偏移處理流程時(shí)，可高效地獲得均勻網(wǎng)格點(diǎn)上地震波多值走時(shí)及振幅的數值計算結果。
- Based on high order generalized screen propagator, we used the method of "wave field downward continuation" to realize prestack depth migration from irregular topography. 基于高階廣義屏算子，應用直接下延法，實(shí)現了起伏地表條件下的高階廣義屏算子深度偏移。
- He walked with a stride full of purpose. 他邁著(zhù)堅定的步伐向前走。
- She has a book full of cuttings about her film. 她有一本書(shū)貼滿(mǎn)了關(guān)于她的一些影片的剪報。
