公开(公告)号：US20140142854A1

公开(公告)日：2014-05-22

申请号：US14081043

申请日：2013-11-15

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Samik SIL ,  Ulrich ZIMMER ,  Michael DAVIDSON

IPC: G01V1/28

CPC classification number: G01V1/288 ,  G01V1/42 ,  G01V2210/123

Abstract: A method of event location to avoid first break picking when signals are small or the ambient noise level is high is described. In this method traveltime associated with the maximum amplitude phases (for any mode of wave) are identified and picked from one or more sensors in an array. Difference between the arrival times are then calculated. A grid search (or optimization) techniques are then employed to search for the event location to match the observed time differences.

Abstract translation: 描述了当信号较小或环境噪声水平较高时避免首次中断挑选的事件定位方法。 在该方法中，与最大振幅相位（用于任何波形的模式）相关联的行进时间被识别并从阵列中的一个或多个传感器拾取。 然后计算到达时间之间的差异。 然后采用网格搜索（或优化）技术来搜索事件位置以匹配观察到的时间差。