Well and Field Monitoring - Cased-Hole Log Analysis and Reservoir Performance Monitoring - page 249

Figure 14.9 gives an example of a series of temperature measurements taken at
spaced time intervals that show depth on the x -axis and temperature on the y -axis
with the color coded traces keyed to increasing time after the treatment was
completed.
Fig. 14.9 DTS “Warm-back” and cross-flow monitoring. Courtesy SPE 153131
The analysis shows intervals that were under stimulated and intervals with cross-
flow fluid re-entry. Note that the well has been completed open-hole and so the
cross-flow occurs across the upper swell packer in interval 3.
Combining DTS with Microseismic (MSM)
Combining DTS with Microseismic (MSM) in hydraulic fracturing gives a good
indication of both near wellbore fluid distribution and far field fracture network.
Figure 14.10 demonstrates that all the perforations in that designated perforation
cluster are taking fluid and MSM shows a good contained fracture network in that
interval.
Fig. 14.10 Combining DTS with MSM. Courtesy SPE 136565