Monitoring Hydraulic Fracturing Operations Using Fiber-Optic Distributed Acoustic Sensing

Hydraulic fracture diagnostics from Krauklis-wave resonance and tube-wave reflections

“…The model presented in this study would need to be extended to predict the signals in the monitoring wells, and it is uncertain if these signals would have as much useful information regarding the fracture geometry. Another technology that reduces the influence of the tool on tube-wave propagation is fiberoptic distributed acoustic sensing (DAS) (MacPhail et al, 2012;Molenaar et al, 2012;Boone et al, 2015). DAS cables can run through grooves across swellable packers along the casing in the sealing elements in uncemented packer and sleeve completion, and they can be buried in the cement in cemented plug-and-perf completions (Boone et al, 2015).…”

“…Another technology that reduces the influence of the tool on tube-wave propagation is fiberoptic distributed acoustic sensing (DAS) (MacPhail et al, 2012;Molenaar et al, 2012;Boone et al, 2015). DAS cables can run through grooves across swellable packers along the casing in the sealing elements in uncemented packer and sleeve completion, and they can be buried in the cement in cemented plug-and-perf completions (Boone et al, 2015). This technology not only avoids any interaction with tube waves, but it can also provide continuous measurements along the full length of the wellbore.…”

Effects of parent well spacing on the poroelastic behaviors in the infill zone in shale oil reservoirs: A case study in Jimsar Shale Oil, China

“…Negative impacts on the fracturing quality and production in infill zones have been reported in the major shale plays in North America 12,13 . In addition to the impact on well production, the impact of parent well depletion on infill zones can be proved by fracture hits, pressure oscillation, DAS and DTS data, and microseismic data 14,15 . The drilling and completion of horizontal wells in infill zones can also cause well control problems in parent wells as the infill well fractures connect to pre‐existing fracture networks and the fracturing fluids and proppants enter the parent wells.…”

“…12,13 In addition to the impact on well production, the impact of parent well depletion on infill zones can be proved by fracture hits, pressure oscillation, DAS and DTS data, and microseismic data. 14,15 The drilling and completion of horizontal wells in infill zones can also cause well control problems in parent wells as the infill well fractures connect to pre-existing fracture networks and the fracturing fluids and proppants enter the parent wells. In severe cases, such unwanted impacts lead to the loss of horizontal wells, which makes it important to understand the underlying mechanism.…”