论文详情

地面监测微地震事件等效速度反演定位方法

石油物探

2012年 51卷第No. 6期

阅读：88

Title

The inversion positioning method of the surface microseismic with equivalent velocity

单位

中国石油大学(华东)地球科学与技术学院,山东青岛266580

Organization

Song Weiqi,Earth Science and Technology College,China University of Petroleum (East China),Qingdao 266580,China

摘要

地面微地震监测资料相邻道走时曲线时差很小，用于模型校正后的反演不够敏感，影响反演定位精度。为此

，探索了针对地面监测微地震事件，利用射孔点微地震记录建立等效初始速度模型，通过扰动速度模型找到最佳微

地震事件的等效速度，进而对该微地震事件进行定位的方法。通过理论模型验证了该方法的有效性；对实际射孔资

料进行等效速度反演，定位结果与实际射孔位置一致，进一步验证了方法的可靠性;实际微地震资料反演定位结果

与预期结果一致，证明地面监测微地震事件的等效速度反演定位方法切实可行。

Abstract

For surface microseismic monitoring data,the moveout of traveltime curve between adjacent gathers is very small,which is not

so sensitive to the inversion after model correction and affects the accuracy of inversion positioning.Therefore,aiming at the

surface microseismic monitoring event,the perforating point microseismic record is used to establish equivalent initial velocity

model,then the equivalent velocity of best microseismic event was identified by disturbance velocity model,and eventually the

position of the microseismic event is verified.The effectiveness and reliability of the method was verified by theoretical model

and actual perforating data.Moreover,equivalent velocity inversion positioning of actual surface microseismic monitoring data

proved the feasibility of the method.

关键词：

地面微地震; 等效速度; 模拟退火算法; 反演定位;

Keywords:

surface microseismic monitoring; equivalent velocity; simulated annealing algorithm; inversion positioning;

基金项目

DOI

10.3969/j.issn.1000-1441.2012.06.009