TY - GEN
T1 - Fracture properties estimation in unconventional reservoirs using seismic DAS records
AU - Lellouch, A.
AU - Meadows, M.
AU - Nemeth, T.
AU - Biondi, B.
N1 - Publisher Copyright: © EAGE 2020.
PY - 2020
Y1 - 2020
N2 - We analyze perforation shots recorded by a downhole DAS array. These sources induce guided waves, which propagate in a low-velocity shale reservoir. They are dispersive and contain a broad frequency content, reaching up to 700 Hz. They are especially valuable in a horizontal cross-well configuration, in which case they propagate through previously stimulated areas. Guided S-waves are very sensitive to the presence of fluid-filled fractures. P-waves undergo a slowdown but are overall less affected. Using simple geometrical considerations, we can estimate the horizontal extent of the fracture system. It shows considerable spatial variability, indicating that stimulation effects are not constant. This study is the first large-scale use of guided waves recorded by DAS. They hold tremendous potential for high-resolution imaging and inversion of subsurface properties before and after stimulation. As such, they open new possibilities for the use of seismology in optimizing unconventional hydrocarbon recovery.
AB - We analyze perforation shots recorded by a downhole DAS array. These sources induce guided waves, which propagate in a low-velocity shale reservoir. They are dispersive and contain a broad frequency content, reaching up to 700 Hz. They are especially valuable in a horizontal cross-well configuration, in which case they propagate through previously stimulated areas. Guided S-waves are very sensitive to the presence of fluid-filled fractures. P-waves undergo a slowdown but are overall less affected. Using simple geometrical considerations, we can estimate the horizontal extent of the fracture system. It shows considerable spatial variability, indicating that stimulation effects are not constant. This study is the first large-scale use of guided waves recorded by DAS. They hold tremendous potential for high-resolution imaging and inversion of subsurface properties before and after stimulation. As such, they open new possibilities for the use of seismology in optimizing unconventional hydrocarbon recovery.
UR - http://www.scopus.com/inward/record.url?scp=85099540318&partnerID=8YFLogxK
M3 - منشور من مؤتمر
T3 - 1st EAGE Workshop on Fibre Optic Sensing
BT - 1st EAGE Workshop on Fibre Optic Sensing
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 1st EAGE Workshop on Fibre Optic Sensing 2020
Y2 - 9 March 2020 through 11 March 2020
ER -