3D Far-Field Sonic Service | Schlumberger

3D Far-Field Sonic Service

Automated subsurface feature extraction

See deep into your reservoir with new depths of insight.

The 3D far-field sonic service extends sonic imaging far beyond the reach of standard sonic logging while also providing true dip and azimuth. The service automates what were previously manual tasks to efficiently and accurately determine connectivity for open fractures and identify subseismic structural features and formation layers, tracing them from the borehole wall through the near-field and far-field reservoir. You’ll significantly advance modeling of fractured reservoirs or conducting structural analysis with these rich far-field datasets and interpretations.

3D Far-Field Sonic Service
Conventional logging speed
10×
Faster processing and analysis
3D
Deliverables plus 2D along-wellbore image
8
Azimuthal measurements from each of 13 receiver stations
The 3D STC reflector discs imaging the dip and azimuth are shown with the migrated monopole image along the wellbore.
The 3D slowness-time-coherence (STC) reflector discs imaging the dip and azimuth are shown with the migrated monopole image along the wellbore.

Expedited acquisition, processing, and interpretation

Enhanced telemetry acquires 3D far-field and standard sonic data at up to 3× the speed of conventional sonic logging. This provides an efficient opportunity to look at far-field reservoir imaging. Using this rich dataset, the new automated workflow rapidly delivers consistent, precise quantitative results up to 10× faster than conventional processing and analysis to bring new insight to understanding the reservoir.

Imaging integration from the wellbore to the far field

The 3D far-field sonic service integrates results from borehole imaging logs to trace features from the near- to far-field reservoir. This seamless combination validates the near-wellbore structural environment while providing continuity for features that intersect the wellbore—as well as identifying and accurately placing those that don’t and would be otherwise undetected.

The 3D STC reflector discs imaging the dip and azimuth are shown with the migrated monopole image along the wellbore.
In this unconventional well in the Wolfcamp, Quanta Geo photorealistic reservoir geology service and 3D far-field sonic service data were acquired in a single logging pass. The fractures identified at the borehole from Quanta Geo service imaging (blue discs) are displayed with 3D STC events on the migrated image produced using the Petrel E&P software platform. Monopole data was used for high-resolution event analysis extending up to 15 m into the reservoir from this well. The completion was designed based on the intensity of the far-field fractures near the toe of the well (right).
The 3D STC reflector discs imaging the dip and azimuth are shown with the migrated monopole image along the wellbore.
3D Far-Field Sonic Service
Extend sonic imaging and achieve true dip and azimuth
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