Acquire accurate formation pressure measurements
StethoScope FPWD service enabled the operator to acquire the accurate
measurements needed for field development planning without making additional
runs. Schlumberger reservoir engineers provided support 24/7, performed data
QC, and helped the operator adjust the measurement plan in real time.
TOP time-optimized pretests enabled acquisition of stabilized formation
pressure measurements in the highly heterogeneous reservoir at various
mobilities. Acquiring the measurements with the mud pumps off reduced noise to
enhance accuracy, enabling determination of pressure variations as small as
0.03 psi.
Provide real-time information for field development planning
The StethoScope service successfully identified fluid gradients and
formation depletion in real time, thereby providing valuable information for
field development planning and saving rig time. A total of 78 tests taken in
four wells acquired five gas gradients, three oil gradients, and one water
gradient. Average station time was only 12 min, and the average pressure test
time was just 20 min. The service achieved a 100% seal success rate on 48 of
the tests and 93% on the other 30.
