本文關鍵詞： CRP疊加道相關算法 剩余靜校正 縱橫波速度比 “零空間”漂移　出處：《石油地球物理勘探》2016年04期 　論文類型：期刊論文

【摘要】：常規(guī)縱波構造控制的共檢波點疊加道相關算法在處理復雜地區(qū)低信噪比、地下構造起伏較大的轉換波地震資料時,容易出現"縱橫波疊加剖面構造層位不匹配,導致轉換波的構造校正量計算不準確"和"算法收斂于局部極值,疊加剖面出現零空間漂移"的現象。本文針對常規(guī)算法的此缺點,分析了該算法的理論原理,提出增強縱橫波疊加剖面匹配質量和壓制"零空間"現象的改進措施:使用縱波共檢波點疊加剖面的構造層位來匹配控制轉換波共檢波點疊加剖面的構造層位,達到增強縱波CMP疊加剖面和轉換波ACCP疊加剖面的層位匹配一致性的目的,提高計算地下構造校正量精度,進而估算較準確的縱橫波速度比值;計算共檢波點疊加道與拉平后的轉換波構造層位之間的絕對靜校正量,以克服靜校正處理的"零空間"漂移現象。實際轉換波資料的應用表明,改進方法能夠進一步提高常規(guī)縱波構造控制的CRP疊加道相關算法的剩余靜校正處理適應能力。
[Abstract]:The common detection point stack correlation algorithm controlled by conventional P-wave structure is easy to occur when dealing with converted wave seismic data with low signal-to-noise ratio (SNR) and large fluctuation of underground structures in complex areas. As a result of the inaccurate calculation of the structural correction of the converted wave, and the phenomenon that the algorithm converges to the local extremum and the stacking section has zero space drift, this paper analyzes the theoretical principle of the algorithm in view of this shortcoming of the conventional algorithm. The improvement measures of enhancing the matching quality of P-S wave stack profile and suppressing the phenomenon of "zero space" are put forward. The structural layer position of the P-wave common detector point stack section is used to match and control the tectonic layer position of the converted wave common detection point stack section. In order to enhance the consistency of horizon matching between P-wave CMP stack profile and converted wave ACCP stack profile, the accuracy of calculating the correction amount of underground structure is improved, and the accurate velocity ratio of P-S wave is estimated. In order to overcome the phenomenon of "zero space" drift of statics processing, the absolute static correction between the stacking channel of common detection point and the levelling layer of converted wave structure is calculated. The application of the actual converted wave data shows that, The improved method can further improve the residual statics processing adaptability of the CRP stack correlation algorithm controlled by conventional P-wave construction.
【作者單位】： 油氣藏地質及開發(fā)工程國家重點實驗室;中國石化西南油氣分公司;
【分類號】：P631.4

【相似文獻】

相關期刊論文 前3條

1 ;關于靜態(tài)校正問題[J];石油物探;1974年02期

2 龔旭東;周濱;高夢晗;王志亮;張建峰;;檢波點水深誤差對OBC雙檢資料合并處理的影響與對策[J];石油物探;2014年03期

3 ;[J];;年期

相關會議論文 前1條

1 王小六;翁斌;張云鵬;郝振江;糜芳;;基于非高斯性最大化的檢波點鬼波壓制技術的應用[A];中國地球物理2013——第二十專題論文集[C];2013年

，

本文編號：1523321