Search International and National Patent Collections

1. (WO2018044309) REAL-TIME PROCESSING AND CONTROL OF DAS VSP SURVEYS

Pub. No.:    WO/2018/044309    International Application No.:    PCT/US2016/049793
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Sep 01 01:59:59 CEST 2016
IPC: E21B 47/00
G01V 1/40
G01V 1/48
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: WILSON, Glenn, Andrew
WU, Xiang
ELLMAUTHALER, Andreas
WILLIS, Mark, Elliott
Title: REAL-TIME PROCESSING AND CONTROL OF DAS VSP SURVEYS
Abstract:
A system for processing DAS VSP surveys in real-time is provided. The system includes a DAS data collection system coupled to at least one optical fiber at least partially positioned within a wellbore and configured to repeatedly activate a seismic source of energy. The system further includes an information processing system connected to the DAS data collection system. A seismic dataset is received from the DAS data collection system. The seismic dataset includes a plurality of seismic data records. Two or more of the plurality of seismic data records are combined into a stack. A quality metric indicative of a desired signal-to-noise ratio or incoherence of the stack is determined for each processed seismic dataset collected from a repeated source. Instructions are sent to the DAS data collection system to stop activating the seismic source, in response to determining that the quality metric has reached a predefined threshold.