摘要
本文针对胜利油田 1998～ 1999年度两种复杂地表条件 ,通过研究特殊复杂区段的地表特点 ,提出了变观施工方法。在三维地震勘探观测系统的设计中 ,面元的属性是根据地质任务要求选择的 ,它包含炮检距和方位角两个重要因素。不同的观测系统有不同的炮检距和方位角 ,炮检距和方位角又取决于覆盖次数 (影响炮检距分布的主要是纵向覆盖次数 ,而影响方位角分布的主要是横向覆盖次数 ) ,因此 ,本文对观测系统的纵、横向覆盖次数进行了讨论。从理论上对变观前、后的面元属性以及在这些区段采取变观的合理性进行了对比分析 。
Aimed at two complex surface conditions of Shengli oilfield in 1998~1999 and through researching surface feature of special complex region, the paper proposed a construction method of variable geometry. On design of 3 D seismic prospecting geometry, the attributions of bin are selected by geological objects. It contains two key elements: offset and azimuth. Different geometry has its respective offset and azimuth, both of them are determined by folds (vertical folds affect on offset distribution and lateral folds affect on azimuth distribution); therefore, we discussed on both vertical and lateral folds of geometry. Correlation analysis both on attribution of bin before and after variable geometry in theory and on reasonableness of variable geometry adopted in these regions have been constructed, the difficult problems in field construction have been solved and fulfillment of geological task has been guaranteed.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2000年第6期795-800,共6页
Oil Geophysical Prospecting
