Journal of Geology & Geophysics
Open Access
ISSN: 2381-8719
+44 1478 350008
ISSN: 2381-8719
+44 1478 350008
Yang Xing
Tanzania
Research Article
An Efficient Method for Velocity Calibration and Prediction of Microseismic Event Location Using very Fast Simulated Annealing
Author(s): Jingyi Chen, Gaoming Li, Allyson Gajraj, Yang Xing, Yalin Li, Furong Wu and Chen YinJingyi Chen, Gaoming Li, Allyson Gajraj, Yang Xing, Yalin Li, Furong Wu and Chen Yin
Velocity calibration and estimation of microseismic event location are two important ingredients in microseismic monitoring. It is generally considered that the accurate estimation of microseismic event location depends on the accurate velocity structure. In this paper, very fast simulated annealing (VFSA) is first applied to invert velocity structure between the treatments well and the monitoring well by using perforation shot travel time data, and then is implemented to locate the microseismic events using the velocity structure obtained above. Unlike previous applications of VFSA using the objective function of misfit between the theoretical travel time and the observed travel time, we propose a novel objective function for VFSA which consists of the travel time differences of P-wave first arrivals between seismic traces. The P-wave first arrival travel time is calculated by means .. View More»
DOI:
10.4172/2329-6755.1000159