繞射波分離成像技術(shù)在斷裂識別中的應(yīng)用
發(fā)布時間:2018-08-14 09:39
【摘要】:斷裂是重要的油氣儲集空間和滲流通道,控制著油氣藏的形成與分布。對地下斷裂系統(tǒng)分布規(guī)律的正確認(rèn)識是油氣勘探乃至后期油氣田開發(fā)的關(guān)鍵所在。繞射波是地下斷裂等小尺度不連續(xù)體的地震響應(yīng)。根據(jù)繞射波與反射波在平面波記錄上的同相軸形態(tài)差異,利用基于平面波預(yù)測的繞射波分離技術(shù),從地震記錄中將繞射波場分離出來,并單獨成像,從而提高小尺度構(gòu)造的識別精度。數(shù)值模型及實際應(yīng)用效果表明,繞射波分離成像技術(shù)對斷階邊界的刻畫更加清楚,對斷裂解釋具有一定的指導(dǎo)意義。
[Abstract]:Fault is an important reservoir space and percolation channel, which controls the formation and distribution of oil and gas reservoirs. The correct understanding of the distribution law of underground fault system is the key to oil and gas exploration and later oil and gas field development. Diffraction wave is the seismic response of small scale discontinuities such as underground faults. According to the coaxial morphological difference of diffraction wave and reflection wave in plane wave record, the diffraction wave field is separated from seismic records and the diffraction wave field is separately imaged by using the diffraction wave separation technique based on plane wave prediction. In order to improve the recognition accuracy of small scale structures. The numerical model and the practical application results show that the diffraction wave separation imaging technique can describe the fracture boundary more clearly and has a certain guiding significance for fracture interpretation.
【作者單位】: 中國石油新疆油田分公司勘探開發(fā)研究院地球物理研究所;中國石油大學(xué)勝利學(xué)院油氣工程學(xué)院;
【分類號】:P618.13;P631.4
本文編號:2182458
[Abstract]:Fault is an important reservoir space and percolation channel, which controls the formation and distribution of oil and gas reservoirs. The correct understanding of the distribution law of underground fault system is the key to oil and gas exploration and later oil and gas field development. Diffraction wave is the seismic response of small scale discontinuities such as underground faults. According to the coaxial morphological difference of diffraction wave and reflection wave in plane wave record, the diffraction wave field is separated from seismic records and the diffraction wave field is separately imaged by using the diffraction wave separation technique based on plane wave prediction. In order to improve the recognition accuracy of small scale structures. The numerical model and the practical application results show that the diffraction wave separation imaging technique can describe the fracture boundary more clearly and has a certain guiding significance for fracture interpretation.
【作者單位】: 中國石油新疆油田分公司勘探開發(fā)研究院地球物理研究所;中國石油大學(xué)勝利學(xué)院油氣工程學(xué)院;
【分類號】:P618.13;P631.4
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