relation: https://episodesplatform.eu/eprints/2166/
title: Overview: Cotton Valley Hydraulic Fracture Imaging Project
creator: Zinno, Richar J.
creator: Gibson, John B.
creator: Walker, Ray N.
creator: Withers, Robert J.
subject: Other-additional study
subject: Cotton Valley
subject: Unconventional hydrocarbon extraction
description: This  paper  describes  an  experiment  to  image  hydraulicfractures   in   the   Cotton   Valley   sands   at   approximately9,500’ depth. The purpose is to determine key geometricalattributes  of  those  hydraulic  fractures.  A  pilot  study  usingone  monitor  well  with  a  single  geophone  at  normal  wellspacing and preliminary results from a more detailed studyinvolving  two  monitor  wells  with  arrays  of  geophones  arepresented.In  the  pilot  study,  it  is  shown  that  microseismic  eventsinduced  by  hydraulic  fracturing  at  a  depth  of  9,500’  weredetected  at  distances  exceeding  1,300’  from  the  origin.Analysis of results indicated that a more complex geophonearray  was  necessary.  An  industry  consortium  of  majoroperators,  service  companies,  government  agencies  andnational   laboratories   was   formed   to   perform   a   moredetailed  study  using  96  3-component  geophone  sondesdistributed among two monitor wells. These  monitor wellsoffset  the  treatment  well  using  nominal  80  acre  spacingrules and will be used as producers. A unique microseismicrecording  system  specifically  designed  and  manufacturedfor  these  operating  depths  (~9,500’)  is  presented.  Imagingis  accomplished  by  using  various  data  analysis  techniquesincluding real-time event location.Applications  of  the  technology  include  optimization  ofhydraulic fracture designs and accurate mapping of fracturegeometry.  Fracture  models  will  be  developed  to  accuratelydepict fracture growth as determined by this project.
publisher: Society of Exploration Geophysicists
date: 1998-09-13
type: Book Section
type: NonPeerReviewed
identifier:   Zinno, Richar J. and Gibson, John B. and Walker, Ray N. and Withers, Robert J.  (1998) Overview: Cotton Valley Hydraulic Fracture Imaging Project.   In:  SEG Technical Program Expanded Abstracts 1998.   SEG Technical Program Expanded Abstracts .  Society of Exploration Geophysicists, pp. 926-929.  ISBN 1052-3812     
relation: https://library.seg.org/doi/abs/10.1190/1.1820642
relation: doi: 10.1190/1.1820642