二维地质模型正演技术在油气勘探中的应用

论述了利用已有地震资料解释成果，根据地质任务建立二维地质模型，在此基础上进行射线追踪、模拟出单炮地震记录和自激自收剖面，从而对观测系统的最大炮检距、道间距等参数进行论证的一些实用方法，这些方法对地震资料采集具有很好的指导作用。在复杂地质构造地震勘探过程中，利用二维地震模型正演技术论证二维观测系统设计能够有效地进行质量技术监控，并能及时指导野外生产，同时验证了以往解释的正确性。

Application of 2D Geology Model Forward Technology in Oil－Gas Prospecting of Sichuan Province

This paper introduced a feasible method for analyzing parameter of the field layouts to improve data acquisition.First,2D geology model is built based on the geology task with the known seismic interpretation results.Then the shot records and zero-offset records of the model are modeled by ray tracing method.Upon the modeling results,the parameter of the field layouts such as maximum distance from shot to geophone,trace to trace distance etc.,are determined.A real case verifies the correctness of the data processing and interpretation,as well as the reasonableness of the designed field layouts.In the process of seismic exploration for the complex geological structure,the application of 2D seismic model forward technology to proof the 2D observation system design is a successful method.It can effectively monitor the quality technology work,instruct thd field production work timely and also can prove the exactness of the previovs interpretation.