摘要
由于油气构造引起的重力信号较弱和深部区域背景的影响, 油气构造引起的微重力信息往往被噪声屏蔽, 而常规的数据处理方法提取的微重力异常的效果不显著. 对变阶滑动趋势分析法进行改进, 提出变阶滑动迭代趋势分析法, 用最优趋势面的值迭代窗口内数据,作为下次趋势分析的数据, 使窗口内的趋势面具有较好的继承性, 提高了识别微弱重力异常信号的能力, 能在强干扰背景下较理想地提取与油气构造相关的信息. 在某油田高精度重力测量工作中, 变阶滑动迭代趋势分析法成功地提取了微重力异常, 并获得良好的地质效果.
Generally microgravity information of reservoir construction is covered by powerful interference background because of the influence of deep region background and weaker information in reservoir construction and can not be obtained with conventional processing methods.By improving variable-order sliding trend analytical method,a variable-order sliding and iterating trend analytical method is put forward and the capability for distinguishing weak information from interference background is improved. Data in sliding windows can be iterated by the value of optimum trend, making optimum trending surface.The information of reservoir construction is obtained under powerful interference background. In some area precision gravity survey,the information of micro gravity anomalies can be found successfully with good geological results.
出处
《桂林工学院学报》
北大核心
2005年第1期19-22,共4页
Journal of Guilin University of Technology
基金
大庆油田有限责任公司资助项目"综合物化探直接探寻油气藏试验区微重磁勘探工程项目" (3100167)
关键词
微重力异常
变阶滑动迭代趋势分析法
油气田
micro gravity anomal
variable-order sliding and iterating trend analysis method
