?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fepisodesplatform.eu%2Feprints%2F2161%2F&rft.title=A+Re-Analysis+of+The+Cotton+Valley+Hydraulic+Fracture+Imaging+Project%3A+Imaged+Geometry+of+the+Taylor+Sand+Hydraulic+Fractures.&rft.creator=.%2C+.&rft.subject=Other-additional+study&rft.subject=Cotton+Valley&rft.subject=Unconventional+hydrocarbon+extraction&rft.description=The+objective+of+this+re-analysis+was+to+examine+the+microseismic+data+from+the+Taylor+sand+hydraulic+fracture+injections+1%0D%0A+using+a+different+methodology+than+that+provided+by+ARCO.2%0D%0A+The+ARCO+approach+typically+uses+two-well+data+so+that+only+arrival+time+information+are+needed+to+locate+microseismic+origins.+In+the+Taylor+sand+injections+(perforated+interval%3A+9620-9640)%2C+data%0D%0Awere+obtained+in+only+one+well+(CGU-22-09).+To+locate+the+points%2C+ARCO+assumed+a+fracture+azimuth+and+located+microseisms+near+that+azimuth+line.+This+is+a+reasonable+approach%2C+given+the%0D%0Agood+azimuth+information+from+the+two+higher+injections+where+two-well+data+were+available%2C+but+there+is+a+small+possibility+that+some+unusual+behavior+might+have+occurred+which+would+not+be%0D%0Aobserved+if+the+azimuth+were+assumed.%0D%0AThis+re-analysis+uses+a+single-well+approach+where+p-wave+particle+motion+is+used+to+determine+the+azimuthal+direction+to+the+microseismic+origin+and+p-wave+and+s-wave+arrivals+are+used+to%0D%0Adetermine+the+distance+and+the+elevation+of+the+microseism.+The+drawback+of+this+method+is+that+high+quality+p-waves+must+be+obtained+to+get+good+azimuthal+information.+As+a+result%2C+this%0D%0Aapproach+cannot+%E2%80%9Csee%E2%80%9D+as+far+as+the+ARCO+approach%2C+but+should+at+least+confirm+the+behavior+on+the+near+wing.%0D%0AIt+was+originally+intended+that+data+be+extracted+to+produce+an+equivalent+5-level+system+(e.g.%2C+analogous+to+that+used+in+the+GRI+M-Site+project)+that+would+mimic+the+measured+response+if+a+5-%0D%0Alevel+wireline+array+were+employed+in+a+single+well.+As+will+be+seen%2C+the+data+quality+(at+least+in+the+Taylor+sand)+are+not+sufficient+to+allow+a+suitable+5-level+system+to+be+extracted%2C+and+all%0D%0Ausable+levels+were+ultimately+examined+to+provide+an+adequate+analysis.&rft.publisher=Gas+Research+Institute&rft.date=1997-12&rft.type=Reports&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=https%3A%2F%2Fepisodesplatform.eu%2Feprints%2F2161%2F1%2F4.pdf&rft.identifier=++.%2C+.++(1997)+A+Re-Analysis+of+The+Cotton+Valley+Hydraulic+Fracture+Imaging+Project%3A+Imaged+Geometry+of+the+Taylor+Sand+Hydraulic+Fractures.++Technical+Report.+Gas+Research+Institute.+++++