共聚焦点成像技术

COMMON FOCUS POINT IMAGING TECHNIQUES

提出一种全新的地震偏移处理方法—共聚焦点 (CFP)成像技术。CFP成像技术借助于两个连续且相互独立的聚焦步骤 ,将叠前偏移与速度分析独立开来 ,并且用算子更新代替传统上对速度场的直接更新 ,最后从经过正确更新的聚焦算子反演出地下速度场。通过模型试算了CFP成像技术 ,结果表明了方法的有效性。

A brand new kind of approach is presented for seismic migration processing-Common Focus Point (CFP) imaging techniques in this paper. CFP imaging techniques will separate pre-stack migration from velocity analysis recurring to two consecutive and independent focusing steps, and substitute operator updating for the direct updating of velocity filed in a traditional way, in the end calculate subsurface velocity filed using correctly updated focusing operator. The effectiveness of CFP imaging techniques was verified on a model.