relation: https://episodesplatform.eu/eprints/2167/ title: Microseismic Mapping of a Cotton Valley Hydraulic Fracture Using Decimated Downhole Arrays. creator: Rutledge, James T. creator: Philips, W. S. creator: House, Leight creator: Zinno, Richar J. subject: Other-additional study subject: Cotton Valley subject: Unconventional hydrocarbon extraction description: An extensive microseismic data set was collected during threehydraulic fracture operations in the Cotton Valley gas field ofEast Texas. Two 48-level, 3-component geophone arrays weredeployed. We have mapped the microseismicity of the Stage 2completion interval using data from 9 or fewer geophonestations. Gross fracture dimensions obtained from the 9-stationdata were the same as determined from the full-array data.Seismic velocities and station corrections were estimated via ajoint hypocenter-velocity inversion. Master-event relativemapping applied to the most populous cluster of locatedseismicity improved location precision 10-fold and resolved a150-ft-length, horizontal linear feature with width and depthdimensions of less than 10 ft. The linear cluster lies near theupper boundary of the treatment interval and implies that themajority of mapped seismicity is constrained to about 4% of thetotal injection depth interval. Fine-scale temporal growthpatterns were revealed as well. publisher: Society of Exploration Geophysicists date: 1998 type: Book Section type: NonPeerReviewed identifier: Rutledge, James T. and Philips, W. S. and House, Leight and Zinno, Richar J. (1998) Microseismic Mapping of a Cotton Valley Hydraulic Fracture Using Decimated Downhole Arrays. In: SEG Technical Program Expanded Abstracts 1998. SEG Technical Program Expanded Abstracts . Society of Exploration Geophysicists, pp. 338-341. ISBN 1052-3812 relation: https://library.seg.org/doi/abs/10.1190/1.1820422 relation: doi: 10.1190/1.1820422