本文選題：多道匹配追蹤　切入點：無原子庫　出處：《石油地球物理勘探》2017年03期

【摘要】：相干體屬性技術(shù)是識別斷層的常見方法,但在應(yīng)用中也會引起假象且損失有用信息。地震數(shù)據(jù)可表示成多組局部平面波(連續(xù)反射信息)與不連續(xù)信息及隨機噪聲之和,從地震數(shù)據(jù)中分離出連續(xù)反射信息則有利于刻畫不連續(xù)地質(zhì)信息。自適應(yīng)波形多道匹配追蹤斷層識別技術(shù)以常規(guī)相干體及傾角屬性技術(shù)為基礎(chǔ),首先通過相干掃描方式確定同相軸組數(shù)、各組同相軸兩個方向的視傾角、到達(dá)時及延遲時等初始信息;然后建立目標(biāo)函數(shù),反演出各組連續(xù)同相軸波形,因不需預(yù)先設(shè)定原子庫,故反演出的波形物理意義更明確,可視為多道匹配追蹤技術(shù)。通過實際資料試驗,所得連續(xù)反射數(shù)據(jù)體和壓制了連續(xù)反射體的殘差數(shù)據(jù)體都有助于識別斷層,且殘差數(shù)據(jù)體剔除了多組同相軸干涉引起的假象,更好地描述了同相軸扭曲的不連續(xù)的線狀地質(zhì)特征,比常規(guī)相干體能識別更多細(xì)節(jié)(如高角度斷面波);在連續(xù)數(shù)據(jù)體上提取的相干體比在原始數(shù)據(jù)體上的更清晰、斷層組合關(guān)系更合理且噪聲更弱。
[Abstract]:Coherent volume attribute technology is a common method for fault identification, but it can also cause false appearance and loss of useful information in application. Seismic data can be expressed as the sum of multiple sets of local plane waves (continuous reflection information), discontinuous information and random noise. Separating continuous reflection information from seismic data is helpful to depict discontinuous geological information. Adaptive waveform multi-track matching tracking fault recognition technology is based on conventional coherent volume and obliquity attributes. First, the number of cophase axis groups is determined by means of coherent scanning, and the initial information such as apparent inclination angle, arrival time and delay time in both directions of each group of same phase axes are determined, and then the objective function is established to invert the wave forms of each group of successive phase axes. Because the atomic library does not need to be set in advance, the physical meaning of the waveform is more clear and can be regarded as a multi-channel matching tracing technique. Both the continuous reflection data volume and the residual data body which suppress the continuous reflection volume can help to identify faults, and the residual data bodies can eliminate the false images caused by multiple sets of cophase axial interference. A better description of the discontinuous linear geological characteristics of the concentric axis is obtained, and more detail (such as high angle cross-section wave) is identified than conventional coherence (e.g., the coherent volume extracted from the continuous data body is clearer than that on the original data body). The fault combination relation is more reasonable and the noise is weaker.
【作者單位】： 中國石油東方地球物理公司;中國石油大港油田公司;中國科學(xué)院地質(zhì)與地球物理研究所蘭州油氣資源研究中心;
【基金】：國家深地專項“超深層重磁電震勘探技術(shù)研究”之課題“超深層重磁電震配套技術(shù)集成及技術(shù)經(jīng)濟適用性評價”(2016YFC0601107)資助
【分類號】：P631.4

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