Deepwater Formation Evaluation
3DEXSM Induction Logging Service
Baker Atlas recently introduced a new
service, the 3D ExplorerSM Induction
Logging Service (3DEXSM),
designed to identify and quantify hydrocarbons in laminated, low-resistivity
pay formations common in deepwater reservoirs. The new instrument
provides more data than traditional resistivity logging measurements
for improved petrophysical evaluation.
While
standard induction instruments use “Z-axis” coils (indicated above in
white) and corresponding eddy currents that flow parallel to the
formation bedding, these traditional measurements sense the horizontal
resistivity only. This horizontal resistivity is dominated by the high
conductivity of the shales and the traditional measurement is
insensitive to what you are after - the hydrocarbons of the sands.
The 3DEX instrument introduces
additional measurements that force the currents to flow
across the bedding and measure a vertical resistivity. |
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