速度反演技术在四川盆地储层预测中的应用

Application of velocity inversion techniques in prediction of reservoirs in Sichuan basin

1. 四川石油管理局地调处成都物探研究中心,四川成都610212;2. 成都理工大学,四川成都610059

1. Chengdu Geophysical Prospecting Research Center of Sichuan Geophysical Company, Sichuan Petroleum Administration, Chengdu 610212, China;2. Chengdu University of Science and Technology, Chengdu 610059, China

速度反演是储层预测的核心技术。各种反演软件的反演方法不同,因而具有不同的应用条件和结果。掌握各类软件的适应条件和优缺点,优选适于研究区储层的反演方法,是储层预测的关键。针对现有的Seislog,Strata,BCI,WCI,Jason等速度反演软件,从原理出发,结合实际资料的处理解释,对比分析了各种软件的优劣及适应性;针对不同储层或不同的地质任务,选用不同的反演方法,提高了反演资料的质量和储层预测的成功率。

Velocity inversion is a key technique of reservoir prediction. Different inversion software bases on different inversionmethod, so the application conditions and results are varying. The key to reservoir prediction with the candidate software is to select the one that is best suitable for the region of interest. On a comparison of themerits, drawbacks, and flexibility of different velocity inversion software such as Seislog, Strata, BCI, WCI, and Jason, this paper proposes some guidelines for selection of velocity inversion software to cope with different reservoirs or geological tasks.