双奇偶小面元三维观测系统的设计及应用

Design of 3-D double even-odd small bin geometry and its application

双奇偶三维观测系统在国内是一种新的三维勘探方法。双奇偶三维观测系统是在单奇偶观测系统的基础上，通过炮线间炮点的相互错动而形成的。该方法与常规线束状三维观测系统相比，有炮检距和方位角更加均匀及施工投入少的优点，并可通过变面元处理为资料解释提供多种剖面。该方法适于在勘探程度较低的地区应用。本文通过实例说明了该方法可明显改善叠加剖面质量。

Double even-odd geometry is a new 3-D exploration method at home. On the basis of single even-odd geometry, the double even-odd geometry can be formed by alternating the shot position between the shot line. Comparing with conventional 3-D swath geometry, the method has advantages of more even distribution of offset and azimuth, fewer cost of operation and providing multiple sections for data interpretation after through variable-bin processing. The method is suitable for regions in a less degree of exploration. The exploration effects of the method on significantly improving quality of stack section have been showed by real case.