本文選題：時頻分析　切入點：砂體預測　出處：《石油地球物理勘探》2017年03期 　論文類型：期刊論文

【摘要】：依拉克構造白堊系舒善河組屬多物源的扇三角洲沉積體系,其砂體變化快、儲層非均質性強,有利砂體難以預測。本文采用時頻分析法,即首先通過S變換將時間域地震信號轉換到頻率域,并基于精細時深標定,優(yōu)選能識別出目標層段分流河道砂體的優(yōu)勢頻率體;再依托優(yōu)勢頻率(40Hz)數(shù)據(jù)體,綜合應用相干、瞬時振幅等多屬性分析技術,預測有利相帶的分布;在該有利相帶約束下,利用三維砂體雕刻技術識別出(6個)有利砂體,清晰刻畫了砂體的規(guī)模和展布特征。根據(jù)預測結果,選擇在2號砂體上布設探井,實鉆后獲得高產(chǎn)油氣流,表明預測結果與實鉆結果很好吻合。
[Abstract]:The Shushanhe formation of the Cretaceous system of Yilake structure is a fan delta sedimentary system with many provenances. The sand body changes rapidly, the reservoir heterogeneity is strong, and the favorable sand body is difficult to predict. That is to say, the seismic signal in time domain is converted to frequency domain by S transform, and based on fine time depth calibration, the dominant frequency body of distributary channel sand body in target layer can be identified by optimal selection, and then, relying on the dominant frequency data body, 40 Hz data body can be synthetically applied coherently. In order to predict the distribution of favorable facies belt, six (6) favorable sand bodies are identified by 3D sand body engraving technique, and the size and distribution characteristics of sand body are clearly described, according to the predicted results, the distribution of favorable facies belt is predicted by instantaneous amplitude and other multi-attribute analysis techniques, and the three dimensional sand body engraving technique is used to identify (6) favorable sand bodies. The high oil flow was obtained by setting the exploration well on the No. 2 sand body, which shows that the prediction results are in good agreement with the real drilling results.
【作者單位】： 中國石油勘探開發(fā)研究院;中國石油勘探開發(fā)研究院廊坊分院;
【基金】：國家科技重大專項“大氣田富集規(guī)律與勘探關鍵技術”(2016ZX05007)資助
【分類號】：P618.13

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