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1. (WO2017156337) HYDRAULIC FRACTURE MONITORING BY LOW-FREQUENCY DAS

Pub. No.:    WO/2017/156337    International Application No.:    PCT/US2017/021678
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: G01N 29/24
G01H 9/00
Applicants: CONOCOPHILLIPS COMPANY
JIN, Ge
MOSHER, Charles C.
FILICE, Frank P.
KRUEGER, Kyle R.
TURA, Ali
ROY, Baishali
JURICK, Dana M.
Inventors: JIN, Ge
MOSHER, Charles C.
FILICE, Frank P.
KRUEGER, Kyle R.
TURA, Ali
ROY, Baishali
JURICK, Dana M.
Title: HYDRAULIC FRACTURE MONITORING BY LOW-FREQUENCY DAS
Abstract:
A method of monitoring hydraulic fracturing using DAS sensors in a treatment well and/or observation well is described. The raw data is transformed using a low pass filter (≤0.05 Hz) and down-sampled to show the signal as the stimulation progresses. The resulting data can be used to optimize the hydraulic fracturing or improve reservoir models for other reservoirs.