eprintid: 2169
rev_number: 14
eprint_status: archive
userid: 6
dir: disk0/00/00/21/69
datestamp: 2019-01-23 11:50:29
lastmod: 2019-01-23 11:50:29
status_changed: 2019-01-23 11:50:29
type: book_section
metadata_visibility: show
creators_name: Urbancic, Ted
creators_name: Shumila, V.
creators_name: Rutledge, James T.
creators_name: Zinno, Richar J.
creators_id: 
creators_id: 
creators_id: jrutledge@lanl.gov
creators_id: 
corp_creators: Engineering  Seismology  Group  Canada  Inc.,  Kingston,Ontario, Canada
corp_creators: Engineering  Seismology  Group  Canada  Inc.,  Kingston,Ontario, Canada
corp_creators: Nambe Geophysical Inc., Los Alamas, New Mexico, U.S.A
corp_creators: Union Pacific Resources Co., Fort Worth, Texas, U.S.A.
title: Determining Hydraulic Fracture Behavior Using Microseismicity
subjects: O
subjects: RU2_3
subjects: SHU
divisions: GTI-1
full_text_status: none
abstract: Temporal-spatial variations in event locations and in frequency-magnitudeparameters  (seismic  activity  level  and  b-value)  are  evaluated  for  a  catalogue  of  994microseismic events  (-1.9 ≤  M  ≥  -0.2)  associated  with  the  Cotton  Valley  (East  Texas,USA) fracture treatment of May 14, 1997. The treatment was carried out between 2756and  2838  m  depth  and  consisted  of  three  separate  injection  phases.  Event  locationswere obtained based on P- and/or S-wave arrivals and direction vectors, to an accuracyof  14  to  24  m..  Spatially,  the  event  locations  were  contained  within  the  perforationinterval,  and  outlined  a  hydraulic  fracture  560  m  in  length  and  60  m  in  width,  that  wassymmetric  about  the  treatment  well  (TW),  and  followed  the  predicted  N70E  trend.Nearly  50%  of  the  events  occurred  over  the  short  interval  90  m  to  120  m  east  of  TW.Over this interval, b-values, as calculated between–1.5 ≤ M ≥ -0.4,  were above 1 duringthe  initial  two  injections,  and  seismic  activity  levels,  evaluated  at  M  =  -0.8,  increasedrelative  to  other  parts  of  the  fracture.    During  the  third  injection,  the  fracture  growtheastwards was accompanied by b-values above 1.  To the west of TW, b-values rangedfrom 0.5 to 1 for all three injections, however, the third injection was accompanied by anincrease   in   seismic   activity.      Based   on   these   observations,   we   suggest   thatmicroseismic  event  locations  can  be  used  to  define  the  overall  dimensions  of  thehydraulic fracture, and that frequency-magnitude parameters can potentially be used toidentify differences in fracture growth and failure mechanisms.
publisher: American Rock Mechanics Association
pagerange: 991-997
event_title: 37th U.S. Rock Mechanics Symposium,
event_location: Vail, Colorado, USA
event_dates: June6-9, 1999
event_type: other
book_title: In Proceeding of the 37th U.S. Rock Mechanics Symposium, Vail, Colorado, USA, June6-9, 1999
official_url: https://www.onepetro.org/conference-paper/ARMA-99-0991
access_IS-EPOS: limited
owner: Publisher
citation:   Urbancic, Ted and Shumila, V. and Rutledge, James T. and Zinno, Richar J.   Determining Hydraulic Fracture Behavior Using Microseismicity.   In:  In Proceeding of the 37th U.S. Rock Mechanics Symposium, Vail, Colorado, USA, June6-9, 1999.   American Rock Mechanics Association, pp. 991-997.