珠江口盆地惠州某区平缆与斜缆地震资料叠前反演综合研究

Research of pre-stack inversion equal depth and variable-depth streamers seismic data in one block in Pearl River Mouth Basin

针对珠江口盆地惠州某区斜缆采集及平缆采集地震资料进行攻关,对2种地震资料采集方式下的频谱、保真保幅性、岩石物理、叠前反演效果等进行了分析,对地震井资料、地震剖面进行了对比和研究。结果表明:斜缆地震资料具有进行叠前反演的可行性,并且斜缆地震反演具有更高的精度,在刻画储层厚度、物性定量预测等方面均具有更大优势。斜缆地震资料低频信息丰富,有利于开展叠前反演工作,有助于获得更丰富的地质认识。

Based on the research of equal depth streamer and variable depth streamer,we analyzed the seismic spectrum,seismic fidelity preserving,rock physics,pre-stack inversion and so on.And we study the seismic well material and the seismic profile.The result suggests that the variable depth streamer has the feasibility of inversion work,and the seismic inversion of the variable depth streamer has higher precision.The variable depth streamer seismic has a greater advantage in identifying reservoir thickness,predicting physical properties and so on,also,it is rich in low-frequency information.It is conducive to carry out prestack inversion work,help to get a richer geological understanding.